(a) As a carrier, you must ensure that aircraft with 30 or more passenger seats on which passenger aisle seats have armrests are equipped with movable aisle armrests on at least one-half of the aisle seats in rows in which passengers with mobility impairments are permitted to sit under FAA or applicable foreign government safety rules.

(b) You are not required to provide movable armrests on aisle seats of rows which a passenger with a mobility impairment is precluded from using by an FAA safety rule.

(c) You must ensure that these movable aisle armrests are provided proportionately in all classes of service in the cabin. For example, if 80 percent of the aisle seats in which passengers with mobility impairments may sit are in coach, and 20 percent are in first class, then 80 percent of the movable aisle armrests must be in coach, with 20 percent in first class.

(d) For aircraft equipped with movable aisle armrests, you must configure cabins, or establish administrative systems, to ensure that passengers with mobility impairments or other passengers with a disability can readily identify and obtain seating in rows with movable aisle armrests. You must provide this information by specific seat and row number.

(e) You are not required to retrofit cabin interiors of existing aircraft to comply with the requirements of this section. However, if you replace any of an aircraft's aisle seats with newly manufactured seats, the new seats must include movable aisle armrests as required by this section. However, an aircraft is never required to have movable aisle armrests on more than one half of the aisle seats.

(f) As a foreign carrier, you must comply with the requirements of paragraphs (a) through (d) of this section with respect to new aircraft you operate that were initially ordered after May 13, 2009 or which are delivered after May 13, 2010. As a U.S. carrier, the requirements of paragraphs (a), (b), (d), and (e) of this section applies to you with respect to new aircraft you operate that were initially ordered after April 5, 1990, or which are delivered after April 5, 1992. As a U.S. carrier, paragraph (c) of this section applies to you with respect to new aircraft you operate that were initially ordered after May 13, 2009 or which were delivered after May 13, 2010.

(g) As a foreign carrier, you must comply with the requirements of paragraph (e) of this section with respect to seats ordered after May 13, 2009.

(a) As a carrier, you must ensure that aircraft with more than one aisle in which lavatories are provided shall include at least one accessible lavatory.

(1) The accessible lavatory must permit a qualified individual with a disability to enter, maneuver within as necessary to use all lavatory facilities, and leave, by means of the aircraft's on-board wheelchair.

(2) The accessible lavatory must afford privacy to persons using the on-board wheelchair equivalent to that afforded ambulatory users.

(3) The lavatory shall provide door locks, accessible call buttons, grab bars, faucets and other controls, and dispensers usable by qualified individuals with a disability, including wheelchair users and persons with manual impairments.

(b) With respect to aircraft not covered in paragraph (f) of this section with only one aisle in which lavatories are provided, you may, but are not required to, provide an accessible lavatory.

(c) You are not required to retrofit cabin interiors of existing aircraft to comply with the requirements of this section. However, if you replace a lavatory on an aircraft with more than one aisle, you must replace it with an accessible lavatory.

(d) As a foreign carrier, you must comply with the requirements of paragraph (a) of this section with respect to new aircraft you operate that were initially ordered after May 13, 2009 or which are delivered after May 13, 2010. As a U.S. carrier, this requirement applies to you with respect to new aircraft you operate that were initially ordered after April 5, 1990, or which were delivered after April 5, 1992.

(e) As a foreign carrier, you must comply with the requirements of paragraph (c) of this section beginning May 13, 2009. As a U.S. carrier, these requirements apply to you with respect to new aircraft you operate that were initially ordered after April 5, 1990, or which were delivered after April 5, 1992.

(f) As a carrier, you must ensure that all new single-aisle aircraft that you operate with an FAA-certificated maximum seating capacity of 125 or more that are delivered on or after October 2, 2026, and on which lavatories are provided shall include at least one lavatory that meets the following specifications:

(1) Grab bars must be provided and positioned as required to meet the needs of individuals with disabilities.

(2) Lavatory faucets must have controls with tactile information concerning temperature. Alternatively, carriers may comply with this requirement by ensuring that lavatory water temperature is adjusted to eliminate the risk of scalding for all passengers. Automatic or hand-operated faucets shall dispense water for a minimum of five seconds for each application or while the hand is below the faucet.

(3) Attendant call buttons and door locks must be accessible to an individual seated within the lavatory.

(4) Lavatory controls and dispensers must be discernible through the sense of touch. Operable parts within the lavatory must be operable with one hand and must not require tight grasping, pinching, or twisting of the wrist. You must comply with these requirements to the extent that such accessible components are reasonably available and certificated for the applicable aircraft type. You are not responsible for acquiring lavatory controls and dispensers with an accessible feature described above so long as you inform the Department of their unavailability despite your reasonable efforts.

(5) The lavatory door sill must provide minimum obstruction to the passage of the on-board wheelchair across the sill while preventing the leakage of fluids from the lavatory floor and trip hazards during an emergency evacuation.

(6) Toe clearance must not be reduced from current measurements.

(7) The aircraft must include a visual barrier that must be provided upon request of a passenger with a disability. The barrier must provide passengers with disabilities using the lavatory (with the lavatory door open) a level of privacy substantially equivalent to that provided to ambulatory users. Visual barriers are not an acceptable method of providing privacy with respect to lavatories covered in § 382.64.

(g) You are not required to retrofit cabin interiors of existing single-aisle aircraft to comply with the requirements of paragraph (f) of this section. However, if you replace a lavatory on a single-aisle aircraft after October 2, 2026, you must replace it with a lavatory complying with the requirements of paragraph (f) of this section. Under this paragraph (g), a lavatory is not considered replaced if it is removed for specified maintenance, safety checks, or any other action that results in returning the same lavatory into service. For retrofit lavatories, there shall be no requirement to install a visual barrier if doing so will obstruct the visibility of exit signs.

(h) As a carrier operating at least one aircraft with an FAA-certificated maximum seating capacity of 60 or more, you must comply with the following requirements:

(1) You must train flight attendants to proficiency on an annual basis to provide assistance in transporting qualified individuals with disabilities to and from the lavatory from the aircraft seat. Such training shall include hands-on training on the retrieval, assembly, stowage, transfer features, and use of the aircraft's on-board wheelchair, and regarding the accessibility features of the lavatory, including any assembly or modifications to accessibility features.

(2) You must provide information, on request, to qualified individuals with a disability or persons making inquiries on their behalf concerning, at a minimum, the accessibility features of aircraft lavatories set forth in paragraph (f) of this section. This information must also be available on the carrier's website (if the carrier markets tickets to the public), and in printed or electronic form on the aircraft, including picture diagrams of accessibility features in the lavatory and the location and usage of all controls and dispensers.

(3) You must remove or conceal the International Symbol of Accessibility from new and in-service aircraft equipped with lavatories that are not capable of facilitating a seated independent transfer (i.e., a transfer from an on-board wheelchair to the toilet seat without requiring the use of an assistant). You must include the International Symbol of Accessibility if the lavatory is capable of providing a seated independent transfer.

(4) You must develop and, upon request, inform passengers of trash disposal procedures and processes for sharps and bio-waste.

(5) You must comply with the provisions of this paragraph (h) by October 2, 2026.

[Doc. No. DOT-OST-2004-19482, 73 FR 27665, May 13, 2008, as amended by Docket No. DOT-OST-2021-0137, 88 FR 50034, Aug. 1, 2023]

(a) As a carrier, you must ensure that all new single-aisle aircraft that you operate with an FAA-certificated maximum seating capacity of 125 seats or more in which lavatories are provided, shall include at least one lavatory of sufficient size to:

(1) Permit a qualified individual with a disability equivalent in size to a 95th percentile male to approach, enter, maneuver within as necessary to use all lavatory facilities, and leave, by means of the aircraft's on-board wheelchair, in a closed space that affords privacy equivalent to that afforded to ambulatory users; and

(2) Permit an assistant equivalent in size to a 95th percentile male to assist a qualified individual with a disability, including assisting in transfers between the toilet and the aircraft's on-board wheelchair, within a closed space that affords privacy equivalent to that afforded to ambulatory users.

(b) You are not required to retrofit cabin interiors of existing single-aisle aircraft to comply with the requirements of paragraph (a) of this section.

(c) As a carrier, you must comply with the requirements of this section with respect to new aircraft that you operate that were originally ordered after October 3, 2033, or delivered after October 2, 2035, or are part of a new type-certificated design filed with the FAA or a foreign carrier's safety authority after October 2, 2024.

[Docket No. DOT-OST-2021-0137, 88 FR 50035, Aug. 1, 2023]

(a) As a carrier, you must equip aircraft that have more than 60 passenger seats, and that have an accessible lavatory (whether or not having such a lavatory is required by § 382.63 of this Part) with an on-board wheelchair. The Aerospatiale/Aeritalia ATR-72 and the British Aerospace Advanced Turboprop (ATP), in configurations having between 60 and 70 passenger seats, are exempt from this requirement.

(b) If a passenger asks you to provide an on-board wheelchair on a particular flight, you must provide it if the aircraft being used for the flight has more than 60 passenger seats, even if the aircraft does not have an accessible lavatory.

(1) The basis of the passenger's request must be that he or she can use an inaccessible lavatory but cannot reach it from a seat without using an on-board wheelchair.

(2) You may require the passenger to provide the advance notice specified in § 382.27 to receive this service.

(c) You must ensure that on-board wheelchairs meet the following standards:

(1) On-board wheelchairs must include footrests, armrests which are movable or removable, adequate occupant restraint systems, a backrest height that permits assistance to passengers in transferring, structurally sound handles for maneuvering the occupied chair, and wheel locks or another adequate means to prevent chair movement during transfer or turbulence.

(2) The chair must be designed to be compatible with the maneuvering space, aisle width, and seat height of the aircraft on which it is to be used, and to be easily pushed, pulled, and turned in the cabin environment by carrier personnel.

(d) As a foreign carrier, you must meet this requirement as of May 13, 2010. As a U.S. carrier, you must meet this requirement by May 13, 2009.

(e) As a carrier, you must ensure that all new single-aisle aircraft that you operate with an FAA-certificated maximum seating capacity of 125 or more that are delivered on or after October 2, 2026, and on which lavatories are provided include an on-board wheelchair meeting the requirements of this section. The Access Board's published nonbinding technical assistance on aircraft on-board wheelchairs may be relied upon for compliance with these requirements.

(1) The on-board wheelchair must be maneuverable both forward and backward through the aircraft aisle by an attendant.

(2) The height of the on-board wheelchair seat must align with the height of the aircraft seat so as to facilitate a safe transfer between the on-board wheelchair seat and the aircraft seat.

(3) The on-board wheelchair must have wheels that lock in the direction of travel, and that lock in place so as to permit safe transfers. Any other moving parts of the on-board wheelchair must be capable of being secured such that they do not move while the occupied on-board wheelchair is being maneuvered.

(4) The on-board wheelchair shall be designed not to tip or fall in any direction under normal operating conditions when occupied for use.

(5) The on-board wheelchair must have a padded seat and backrest and must be free of sharp or abrasive components.

(6) The on-board wheelchair must have arm supports that are sufficiently structurally sound to permit transfers and repositionable so as to allow for unobstructed transfers; adequate back support; torso and leg restraints that are adequate to prevent injury during transport; and a unitary foot support that provides sufficient clearance to traverse the threshold of the lavatory and is repositionable so as to allow for unobstructed transfer. All restraints must be operable by the passenger.

(7) The on-board wheelchair must be maneuverable in a forward orientation partially into at least one aircraft lavatory to permit transfer from the on-board wheelchair to the toilet.

(8) The on-board wheelchair must be maneuverable into the aircraft lavatory without protruding into the clear space needed to completely close the lavatory door.

(9) The on-board wheelchair must prominently display instructions for proper use.

(f) You are not required to expand the existing FAA-certificated on-board wheelchair stowage space of the aircraft, or modify the interior arrangement of the lavatory or the aircraft, in order to comply with this section. However, if the on-board wheelchair that you obtain does not fit within the original stowage space, and another space exists (e.g., an overhead compartment) where the on-board wheelchair could fit consistent with FAA safety standards, then you must stow the on-board wheelchair in that space and must request any necessary FAA approval to do so. You are not required to make the on-board wheelchair available if the pilot-in-command determines that safety or security considerations preclude its use.

(g) You must acquire an OBW that complies with as many requirements set forth in paragraph (e) of this section as are available. You are not responsible for the failure of third parties to develop and deliver an on-board wheelchair that complies with a requirement set forth in paragraph (e) of this section so long as you make reasonable efforts to purchase such an OBW and inform the Department at the address cited in § 382.159 that an on-board wheelchair meeting that requirement is unavailable despite your reasonable efforts. If you cannot provide a wheelchair meeting requirement (e)(8) of this section despite your reasonable efforts, then you must provide, on request, the use of the visual barrier (e.g., a curtain) described in § 382.63(f)(7) to enable the passenger to perform lavatory functions in privacy.

(h) If you replace an on-board wheelchair on aircraft with an FAA-certificated maximum seating capacity of 125 or more after October 2, 2026, then you must replace it with an on-board wheelchair that meets the standards set forth in paragraph (e) of this section.

[Doc. No. DOT-OST-2004-19482, 73 FR 27665, May 13, 2008, as amended by Docket No. DOT-OST-2021-0137, 88 FR 50034, Aug. 1, 2023]

(a) As a carrier, you must ensure that there is priority space (i.e., a closet, or a row of seats where a wheelchair may be strapped using a strap kit that complies with applicable Federal Aviation Administration or applicable foreign government regulations on the stowage of cargo in the cabin compartment) in the cabin of sufficient size to stow at least one typical adult-sized folding, collapsible, or break-down manual passenger wheelchair, the dimensions of which are 13 inches by 36 inches by 42 inches or less without having to remove the wheels or otherwise disassemble it. This section applies to any aircraft with 100 or more passenger seats and this space must be other than the overhead compartments and under-seat spaces routinely used for passengers' carry-on items.

(b) If you are a carrier that uses the seat-strapping method to stow a manual passenger wheelchair, you must ensure that there is priority space for at least two such wheelchairs, if stowing the second passenger wheelchair would not displace passengers.

(c) If you are a carrier that uses a closet as the priority space to stow a manual passenger wheelchair, you must install a sign or placard prominently on the closet indicating that such wheelchairs and other assistive devices are to be stowed in this area with priority over other items brought onto the aircraft by other passengers or crew, including crew luggage, as set forth in § 382.123.

(d) If passengers holding confirmed reservations are not able to travel on a flight because their seats are being used to stow a passenger's wheelchair as required by paragraph (a) of this section, carriers must compensate those passengers in an amount to be calculated as provided for in instances of involuntary denied boarding under 14 CFR part 250, where part 250 applies.

(e) As a carrier, you must never request or suggest that a passenger not stow his or her wheelchair in the cabin to accommodate other passengers (e.g., informing a passenger that stowing his or her wheelchair in the cabin will require other passengers to be removed from the flight), or for any other non-safety related reason (e.g., that it is easier for the carrier if the wheelchair is stowed in the cargo compartment).

(f) As a carrier, you must offer pre-boarding to a passenger stowing his or her wheelchair in the cabin.

(g) As a foreign carrier, you must meet the requirement of this section for new aircraft ordered after May 13, 2009, or delivered after May 13, 2010. As a U.S. carrier, this section applies to you with respect to new aircraft you operate that were ordered after April 5, 1990, or which were delivered after April 5, 1992.

[78 FR 67923, Nov. 12, 2013]

(a) As a carrier, you must ensure that all new videos, DVDs, and other audio-visual displays played on aircraft for safety purposes, and all such new audio-visual displays played on aircraft for informational purposes that were created under your control, are high-contrast captioned. The captioning must be in the predominant language or languages in which you communicate with passengers on the flight.

(b) The requirements of paragraph (a) of this section go into effect with respect to audio-visual displays used for safety purposes on November 10, 2009.

(c) Between May 13, 2009 and November 9, 2009, U.S. carriers must ensure that all videos, DVDs, and other audio-visual displays played on aircraft for safety purposes have open captioning or an inset for a sign language interpreter, unless such captioning or inset either would interfere with the video presentation so as to render it ineffective or would not be large enough to be readable, in which case these carriers must use an equivalent non-video alternative for transmitting the briefing to passengers with hearing impairments.

(d) The requirements of paragraph (a) of this section go into effect with respect to informational displays on January 8, 2010.

(a) As a carrier, you must maintain all aircraft accessibility features in proper working order.

(b) You must ensure that any replacement or refurbishing of the aircraft cabin or its elements does not reduce the accessibility of that element to a level below that specified for new aircraft in this part.

[Doc. No. DOT-OST-2004-19482, 73 FR 27665, May 13, 2008, as amended at 74 FR 11471, Mar. 18, 2009]

You must allow a service animal to accompany a passenger with a disability. You must not deny transportation to a service animal based on the animal's breed or type or on the basis that its carriage may offend or annoy carrier personnel or persons traveling on the aircraft.

[Doc. No. DOT-OST-2018-0068, 85 FR 79774, Dec. 10, 2020]

(a) You may rely on one or more of the factors set forth in paragraphs (a)(1) through)(3) of this section to determine if an animal is a service animal that must be accepted for transport.

(1) You may make two inquiries to determine whether an animal qualifies as a service animal. You may ask if the animal is required to accompany the passenger because of a disability and what work or task the animal has been trained to perform. You must not ask about the nature or extent of a person's disability or ask that the service animal demonstrate its work or task.

(2) You may observe the behavior of an animal. A trained service animal will remain under the control of its handler. It does not run freely around an aircraft or an airport gate area, bark or growl repeatedly at other persons or other animals on the aircraft or in the airport gate area, bite, jump on, or cause injury to people, or urinate or defecate in the cabin or gate area. An animal that engages in such disruptive behavior demonstrates that it has not been successfully trained to behave properly in a public setting and carriers are not required to treat it as a service animal without a carrier in the cabin, even if the animal performs an assistive function for a passenger with a disability.

(3) You may look for physical indicators, such as a harness or vest on the animal, to determine if the animal is a service animal.

(b) You may require that a service animal be harnessed, leashed, or otherwise tethered at all times by the service animal user or service animal handler while in areas of the airport that you own, lease or control, or on an aircraft.

[Doc. No. DOT-OST-2018-0068, 85 FR 79774, Dec. 10, 2020]

You are not required to accept more than two service animals for a single passenger with a disability.

[Doc. No. DOT-OST-2018-0068, 85 FR 79774, Dec. 10, 2020]

(a) If a passenger with a disability seeks to travel with a service animal, you may require the passenger to provide you, as a condition of permitting the service animal to travel in the cabin, a current completed U.S. Department of Transportation Service Animal Air Transportation Form. Current means the form was completed on or after the date the passenger purchased his or her airline ticket.

(b) On a flight segment scheduled to take 8 hours or more, you may, as a condition of permitting a service animal to travel in the cabin, require the passenger with a disability traveling with the service animal to confirm that the animal will not need to relieve itself on the flight, or that the animal can relieve itself in a way that does not create a health or sanitation issue on the flight by providing a current DOT Service Animal Relief Attestation Form. Current means the form was completed on or after the date the passenger purchased his or her airline ticket.

(c) You are not permitted to require documentation from passengers with disabilities traveling with service animals beyond the completion of the forms identified in paragraphs (a) and (b) of this section except to comply with requirements on transport of animals by a Federal agency, a U.S. territory or a foreign jurisdiction.

(d) As a U.S. air carrier, if you require service animal users to submit the forms identified in paragraphs (a) and (b) of this section, you must have copies of these forms available for passengers at each airport you serve. As a foreign air carrier, if you require service animal users to submit the forms identified in paragraphs (a) and (b) of this section, you must have copies of the forms available for passengers at each airport serving a flight you operate that begins or ends at a U.S. airport.

(e) If you have a website, you must have the forms identified in paragraphs (a) and (b) available to passengers in an accessible format. You must mail copies of the forms identified in paragraphs (a) and (b) to passengers upon request.

(f) If you require a passenger with a disability traveling with a service animal to submit the forms identified in paragraphs (a) and (b) of this section in advance of the passenger's date of travel, you must provide the passenger the option of submitting the completed form(s) to you electronically or by hardcopy.

(g)(1) If a passenger's reservation was made more than 48 hours in advance of the first originally scheduled departure time on the passenger's itinerary, you may require that passenger provide up to 48 hours advance notice by submitting the form identified in paragraph (a) of this section.

(2) If a passenger's reservation was made more than 48 hours in advance of the first originally scheduled departure time on the passenger's itinerary and a flight segment on the passenger's itinerary is scheduled to take 8 hours or more, you may require that the passenger provide up to 48 hours advance notice by submitting the form identified in paragraph (b) of this section.

(3) If a passenger's reservation was made less than 48 hours in advance of the first originally scheduled departure time on the passenger's itinerary, you may not require that passenger provide advance notice of his or her intent to travel with a service animal. You may require that the passenger complete the forms identified in paragraphs (a) and (b) of this section and submit a copy of the form to you at the passenger's departure gate on the date of travel.

(h) If the passenger does not meet the advance notice requirements you establish consistent with this section, you must still provide the accommodation if you can do so by making reasonable efforts, without delaying the flight.

[Doc. No. DOT-OST-2018-0068, 85 FR 79774, Dec. 10, 2020]

You may not require a passenger with a disability to check-in physically at the airport, rather than using the online check-in available to the general public, on the basis that the passenger is traveling with a service animal.

[Doc. No. DOT-OST-2018-0068, 85 FR 79774, Dec. 10, 2020]

(a) You must permit a service animal to accompany a passenger with a disability on the passenger's lap or in the passenger's foot space, unless this location and placement would:

(1) Be inconsistent with safety requirements set by the FAA or the foreign carrier's government; or

(2) Encroach into another passenger's space.

(b) Before refusing to transport a large service animal that cannot be accommodated on the passenger's lap or in the passenger's foot space without encroaching into another passenger's space, you must offer the passenger the opportunity to move with the animal to another seat location within the same class of service, if available on the aircraft, where the animal can be accommodated. You are not required to reseat other passengers to accommodate a service animal except as required for designated priority seats in Subpart F.

(c) If there are no alternatives available to enable the passenger to travel with the service animal in the cabin of the scheduled flight, you must offer the passenger the opportunity to transport the service animal in the cargo hold free of charge or travel on a later flight to the extent there is space available on a later flight and the transport is consistent with the safety requirements set by the FAA or a foreign carrier's government.

[Doc. No. DOT-OST-2018-0068, 85 FR 79774, Dec. 10, 2020]

While you generally cannot charge an individual with a disability for transporting service animals, or for providing other services that this part requires, you may charge a passenger with a disability for damage caused by his or her service animal so long as you normally charge individuals without disabilities for similar kinds of damage.

[Doc. No. DOT-OST-2018-0068, 85 FR 79774, Dec. 10, 2020]

(a) You may deny transport to a service animal under the following circumstances:

(1) The animal poses a direct threat to the health or safety of others (see definition in § 382.3);

(2) The animal causes a significant disruption in the cabin or at an airport gate area, or its behavior on the aircraft or at an airport gate area indicates that it has not been trained to behave properly in public (e.g., running freely, barking or growling repeatedly at other persons on the aircraft, biting or jumping on people, or urinating or defecating in the cabin or gate area);

(3) The animal's carriage would violate applicable safety or health requirements of any U.S. federal agency, U.S. territory or foreign government; or

(4) The passenger with a disability seeking to travel with a service animal in the cabin of the aircraft does not provide completed current forms as set forth in § 382.75 (a) and (b) to the carrier when requested to do so.

(b) In determining whether to deny transport to a service animal on the basis that the animal poses a direct threat under paragraph (a)(1) of this section, you must make an individualized assessment, independent of the dog's breed or type, based on reasonable judgment that relies on the best available objective evidence to ascertain the nature, duration, and severity of the risk; the probability that the potential injury will actually occur; and whether reasonable modifications of policies, practices, or procedure will mitigate the risk. A current completed U.S. Department of Transportation Service Animal Air Transportation Form may be used in making this determination.

(c) In determining whether to deny transport to a service animal on the basis that the animal has misbehaved and/or has caused a significant disruption in the cabin under paragraph (a)(2) of this section, you must make an individualized assessment, independent of the dog's breed or type, based on reasonable judgment that relies on the best available objective evidence to ascertain the probability that the misbehavior and/or disruption will continue to occur; and whether reasonable modifications of policies, practices, or procedure will mitigate the misbehavior and/or the disruption. A current completed U.S. Department of Transportation Service Animal Air Transportation Form and a current completed U.S. Department of Transportation Service Animal Relief Attestation Form may be used in making this determination.

(d) In conducting the analysis required under paragraphs (a)(1) and (2) of this section, you must not deny transportation to the service animal if there are means available short of refusal that would mitigate the problem (e.g., muzzling a barking service dog or taking other steps to comply with animal health regulations needed to permit entry of the service animal into a domestic territory or a foreign country).

(e) If you refuse to provide transportation to a service animal based on any provision in this part, you must provide the individual with a disability accompanied by the service animal a written statement of the reason for the refusal. This statement must include the specific basis for the carrier's opinion that the refusal meets the standards of paragraphs (a) through (c) of this section or is otherwise specifically permitted by this part. You must provide this written statement to the individual with a disability accompanied by the service animal either at the airport, or within 10 calendar days of the refusal of transportation.

[Doc. No. DOT-OST-2018-0068, 85 FR 79774, Dec. 10, 2020]

Carriers are not permitted to establish additional restrictions on the transport of service animals outside of those specifically permitted by the provisions in this part, unless required by applicable FAA, TSA, or other Federal requirements or a foreign carrier's government.

[Doc. No. DOT-OST-2018-0068, 85 FR 79774, Dec. 10, 2020]