Flightcrew Compartment Access and Door Designs

This action supersedes Special Federal Aviation Regulation (SFAR) 92-4, which was published on March 19, 2002, to allow operators to quickly modify the flightcrew compartment door to delay or deter unauthorized entry to the flightcrew compartment. This action temporarily authorizes variances from existing design standards for the doors and certain operational rules associated with the modifications. It allows for approval for return to service of modified airplanes without prior approved data if the modification constitutes a major alteration. This action prohibits the possession of flightdeck compartment door keys by other than the flightcrew during flight, unless the flightdeck door has an internal flightdeck locking device installed, operative, and in use. This action extends regulatory relief for all-cargo transport category airplanes and a limited number of passenger airplanes beyond April 9, 2003.