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Elodie Roux. Septembre 2003
Subpart D : Design and Construction
FAR 25.783 : Doors.
(a)
Each cabin must have at least one easily accessible external door.
(b)
There must be a means to lock and safeguard each external door against opening in .ight(eitherinadvertentlybypersonsoras aresultof mechanicalfailureorfailure of a single structural element either during or after closure). Each external door must be openable from both the inside and the outside, even though persons may be crowded against the door on the inside of the airplane. Inward opening doors may be used if there are means to prevent occupants from crowding against the door to an extent that would interfere with the opening of the door. The means of opening must be simple and obvious and must be arranged and marked so that it can be readily located and operated, even in darkness. Auxiliary locking devices may be used.
(c)
Each external door must be reasonably free from jamming as a result of fuselage deformation in a minor crash.
(d)
Eachexternaldoor mustbelocated wherepersons usingthem will notbe endangered by the propellers when appropriate operating procedures are used.
(e)
There must be a provision for direct visual inspection of the locking mechanism to determine if external doors, for which the initial opening movement is not inward (including passenger, crew, service, andcargo doors), are fully closed and locked. The provision must be discernible under operational lighting conditions by appro-priate crewmembers using a .ashlight or equivalent lighting source. In addition, there must be a visual warning means to signal the appropriate .ight crewmem-bersif any externaldooris notfully closed andlocked.The means mustbedesigned such that any failure or combination of failures that would result in an erroneous closed and locked indication is improbable for doors for which the initial opening movement is not inward.
(f)
Externaldoors musthaveprovisions toprevent the initiation ofpressurization of the airplane to an unsafe level if the door is not fully closed and locked. In addition, it mustbe shownby safety analysisthatinadvertent openingis extremelyimprobable.
(g)
Cargo andservicedoors not suitablefor use as emergency exits only meetparagraphs (e)and(f) ofthissectionandbesafeguarded againstopeningin .ightasaresult of mechanical failure or failure of a single structural element.
(h)
[Eachpassenger entrydoorin the side ofthefuselage mustmeet the applicable requi-rements ofSecs. 25.807 through25.813for aTypeII orlargerpassenger emergency exit.]
(i)
Ifanintegral stairisinstalledin apassenger entrydoorthatisquali.ed as apassenger emergency exit, the stair must be designed so that under the following conditions the e.ectiveness of passenger emergency egress will not be impaired :
(1)
The door, integral stair, and operating mechanism have been subjected to the inertia forces speci.ed in Sec. 25.561(b)(3), acting separately relative to the surrounding structure.
(2)
The airplane is in the normal ground attitude and in each of the attitudes corresponding to collapse of one or more legs of the landing gear.
(j)
Alllavatorydoors mustbedesignedtopreclude anyonefrombecomingtrappedinside thelavatory, andif alocking mechanismisinstalled,itbe capable ofbeing unlocked from the outside without the aid of special tools.
Amdt. 25-88, E.. 12/9/96
FAR 25.785 : Seats, berths, safety belts, and harnesses.
(a)
A seat(orberthfor a nonambulantperson) mustbeprovidedfor each occupant who has reached his or her second birthday.
(b)
Each seat, berth, safety belt, harness, and adjacent part of the airplane at each station designated as occupiable during takeo. and landing must be designed so that a person making proper use of these facilities will not su.er serious injury in an emergency landing as a result of the inertia forces speci.ed in Secs. 25.561 and
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本文链接地址：FAA规章 美国联邦航空规章 Federal Aviation Regulations 3(86)
