Flightcrew Compartment Access and Door Designs

This action allows airline 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 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 cabin flight attendants during flight. This action is being taken in the wake of the September 11, 2001, terrorist attacks against four U.S. commercial airplanes.