DGT

- DTC/F5X 371111 Exemption attachment

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This document is the intellectual property of DASSAULT AVIATION. It may not be used, reproduced, modified or disclosed withou t its authorization. DASSAULT AVIATION Proprie tary Data. 

### FALCON 5X

- Petition for exemption from 25.809(a) on RH type III overwing emergency exit

In accordance with Title 14 CFR Part 11, Dassault Aviati on respectfully submits the present petition for exemption from Title 14 CFR Part 25, Section 25.809(a) at Amendment 25

- 116. This exemption, if granted, would permit relief from the “viewing of the likely areas of evacuee ground contact prior to opening th e door” requirement for the type III overwing emergency exit

on Falcon 5X aircraft.

Petitioner Contact [as per 14 CFR Part 11, §11.81(a)] Matthieu Amberg

DASSAULT AVIATION
Falcon 5X Program Certification Engineer 78, quai Marcel Dassault

- Cedex 300

92552 Saint

- Cloud Cedex

- France
Phone: +33 1 47 11 32 52

E

- Mail: matthieu.amberg@dassault

- aviation.com

Specific section of 14 CFR from which an exemption is required [as per 14 CFR Part 11, §11.81(b)]

Sect ion 25.809(a), Amendment 25

- 116: Each emergency exit, in cluding each flightcrew emergency exit, must be a moveable door or hatch in the external walls of the fuselage, allowing an unobstructed opening to the outside. In addition, each emergency exit must have means to permit viewing of the conditions outside th e exit when the exit is closed. The viewing means may be on or adjacent to the exit provided no obstructions exist between the exit and the viewing means. Means must also be provided to permit viewing of the likely areas of evacuee ground contact. The like ly areas of evacuee ground contact must be viewable during all lighting conditions with the landing gear extended as well as in all conditions of landing gear collapse.

Extent of Relief and Reason for Seeking Relief [as per 14 CFR Part 11, §11.81(c)]

For t he Falcon 5X aircraft type III overwing emergency exit (RH side) , Dassault Aviation seeks a relief from part of the here above section requiring the viewing of the likely areas of evacuee ground contact prior to opening the door.

For this exit, the outside evacuation path follows a marked route on the wing box, from the overwing type III emergency exit to the leading edge and down to the ground

, without requiring an assist means (thanks to the low height of the wing leading edge).

Considering the outside vi ewing from the overwing exit window as well as from the adjacent window, the likely point of contact with the ground is masked by the wing box. A relief from the 14 CFR §25.809(a) is necessary since the literal compliance to this requirement is not practic al for overwing emergency exit configurations.DGT

- DTC/F5X 371111 Exemption attachment

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This document is the intellectual property of DASSAULT AVIATI ON. It may not be used, reproduced, modified or disclosed without its authorization. DASSAULT AVIATION Proprietary Data. In addition Dassault Aviation understands that the intent in this rule was that it is not necessary for a person to be able to view the ground contact point while in position to open an overwing
exit. And tha t the FAA is considering rulemaking to harmonize this requirement with EASA requirement CS25.809(a)(3) at amendment 12 , which limits the ground contact point visibility requirement to non

- overwing passenger emergency exits only :

CS25 Amdt12

- §25.809(a)(3) : For non

- overwing passenger emergency exits, a means must also be provided to permit viewing of the likely areas of evacuee ground contact when the exit is closed with the landing gears extended or in any condition of collapse. Furthermore, the likely are as of evacuee ground contact must be viewable with the exit closed during all ambient lighting conditions when all landing gears are extended.

Reasons why granting your request would be in the public interest [as per 14 CFR Part 11, §11.81(d)]
Whereas Dass ault Aviation is not an American aircraft manufacturer, its completion center Dassault Falcon Jet (DFJ) is a large American facility settled for a long time within the United

States aircraft industry. In addition, as for all Dassault Aviation Falcon aircra ft programs, the Falcon 5X program involves numerous US Companies as aircraft systems and airframe and services suppliers. Falcon 5X business will increase the already established Falcon business which represents thousands of jobs over the United States.

D enial of this petition would negatively impact the ability of the Falcon 5X to compete with other airplanes in the executive market, that have been already been granted with exactly the same exemption. This will adversely impact the economy and employment of French and US companies, which would be against the public interest. Not granting this petition would force a major and unforeseen design and manufacturing effort necessary for the modification of the exit configuration. Such effort would not lead to a level of safety enhancement and would lead to delays in the business activity of the US citizens Falcon customers as well as in the business between Dassault Aviation and its numerous US’s partners
involved in the Falcon 5X project.

Granting this exemption would be in the interest of the public as the level of safety provided by
the 5X design would be consistent with the intent of the rule.

Reasons why granting the exemption would not adversely affect safety [as per 14 CFR Part 11, §11.81(e)]
Since Amendme nt 25

- 116, the intention of the §25.809(a), requesting the outside viewing means, is to enable an evacuee to ascertain whether to open an exit, and whether it would be safe to evacuate through the exit, based on an assessment of the outside conditions.

On Falcon 5X , the wide field of vision through the emergency exit window provides excellent situation awareness for occupants preparing to open the overwing emergency exit. Any hazard that would pose immediate threat to the occupant if the door is opened wou ld surely be detected by observing through this window. This viewing means enable then a safe opening of the door consistently with the intention of the rule.DGT

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This document is the intellectual property of DASSAULT AVIATION. It may not be used, reproduced, modified or disclosed withou t its authorization. DASSAULT AVIATION Proprietary Data. Any hazard at the point of contact with the ground, would be detected by the evacuee from his

sa fe station on the wing box.

Granting an exemption would enable to propose the Falcon 5X with an overwing emergency exit configuration which meets the level of safety intended by the amendment 25

- 116 to regulation FAR §25.809(a).

Petition summary for Federa l Register publication [as per 14 CFR Part 11, §11.81(f)] In accordance with Title 14 CFR Part 11, Dassault Aviation submits a petition for exemption from Title 14 CFR Part 25 section 25.809(a) at amendment 25

- 116 for the type III overwing emergency exit o n Falcon 5X aircraft.

Additional information, views or arguments available to support your request [as per 14 CFR Part 11, §11.81(g)]

Before the opening of the overwing type III emergency door, evacuee will be able to observe the complete overwing surface , thanks to the window field of view and thanks to the outside emergency light required by §25.812(g)(1)(ii).

During evacuation from the overwing exit, evacuee located on the wing marked evacuation route, will be in a position to detect hazards that would threaten safety during the stepping down from the wing at the dedicated point. If the dedicated point of contact with the ground is not favorable, the evacuee will still be able to either

 stop the cabin evacuation from the RH type III overwing exit and eva cuate from the LH type I exit,

 or divert the evacuation path to slide from the wing to the ground further outboard This being made possible by the outside emergency light which exceeds the level required by §25.812(g)(1)(ii) and by the low height of the wi ng leading edge which remains below 6 feet from the ground farther from the marked sliding point, even in adverse collapsed landing gear configurations.

Operation Outside of the United States [as per 14 CFR Part 11, §11.81(h)]
Falcon 5X aircraft will be op erated all other the world by its US registered operators, therefore Dassault Aviation requests to exercise the privileges of the exemption outside the United

States.

Conclusion Considering on one hand the harmonization projected by FAA for CS25.809(a) reg ulation with EASA regulation improved text, and on the other hand the exemptions already granted by FAA for similar overwing exit configuration, Dassault Aviation believes that granting this exemption petition will be in the public interest and will not ad versely affect safety of Falcon 5X

passengers.