U.S. Depmiment ofTranspotiation 

Docket Management Facility 

West Building ground floor 

Room W12-140 

1200 New Jersey Avenue, SE. 

Washington, DC 20590 

Attention: Docket Operations 

Subject: Cessna Aircraft Company, Modei680A, Request for Partial Exemption, 14 CFR 

25.809(a) 

Reference: FAA Project Cessna-0721 00 

To Whom It May Concern: 

Cessna Aircraft Company herby respectfully submits a request for an exemption to allow partial relief to 

14 CFR 25.809(a), Amendment 116, for the Cessna Model680A Citation Latitude. Regulation 14 CFR 

25.809(a), Amendment 116 reads as follows: 

(a) Each emergency exit, including each flightcrew emergency exit, must be a movable 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 pennit viewing of the conditions outside the 

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 

pennit viewing of the likely areas of evacuee ground contact. The likely 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 

Background 

The Cessna Model 680A is an executive jet with a maximum of 9 passengers and two crew. The 

overwing exit is a Type III exit. It is located on the right hand side of the aircraft in the lavatory. The 

overwing exit has a window that provides a means to penn it viewing of the conditions outside the exit 

when the exit is closed. This allows for viewing of the conditions outside the exit when the exit is 

closed. However, from the location of the overwing exit it is not possible to view the ground contact. 

Cessna Aircraft Company One Cessna Boulevard, P.O. Box 7704, Wichita, Kansas 67277-7704, 316/517-6000 
the Lemjet Model LJ200 and Exemption 10757 for the Embraer Model EMB-550. 

Public Interest 

Cessna Aircraft Company competes in the global market. This aircraft is a needed expansion to the 

Cessna line of executive jets to compete in this market. The production of this aircraft will provide much 

needed jobs in today's environment. The added interface required to place the right hand exit in an area 

where ground contact could be viewed would require extra weight to interface with the main cabin 

environment. This would adversely affect the customers with added cost of operation. 

Affect on Safety 

In order to provide an exit that would view the ground contact, the exit would need to be moved forward 

in the cabin. This would mean that the exit would either be located on the vety leading edge of the wing 

or off of the wing. For the best safety of the passengers, the current location of the exit in the lavat01y is 

the best location. The current design allows the passengers visibility of the area outside the overwing 

exit, to assess the immediate danger. Once out of the aircraft, on the wing, the passenger can view in all 

directions, assessing the best route to leave the wing. Thus the granting of this exemption would not 

adversely affect safety of egress. 

Summmy for Publication In Federal Register 

Cessna Aircraft Company requests a partial exemption from 14 CFR 25.809(a), Amendment 116 for 

overwing exit on the Cessna Model 680A. 

Waiver ofNotice and Public Procedure 

Cessna respectfully requests, and believes that good cause exists to justify, that action on this petition not 

be delayed by publication and comment procedures. Cessna feels this request does not set a precedent, 

because the relief requested herein is very similar to exemptions granted previously. 

Cessna Aircraft Company One Cessna Boulevard, P.O. Box 7704, Wichita, Kansas 67277-7704, 316/517-6000 
~ 

/d.v Brian Richardet 

Manager, Airw01ihiness 

Cessna Aircraft Company 

Cc: Tina Miller, Program Manager, Wichita ACO 

Cessna Aircraft Company One Cessna Boulevard, P.O. Box 7704, Wichita, Kansas 67277-7704, 316/517-6000