Airworthiness Advisory Circulars - Part 6-63 - General advice
Part 6 - General advice
Emergency Exits - AD/GENERAL/37
Emergency exits have one purpose in life. After a crash landing if there is a fire or the danger of one, occupants need to evacuate - fast.
An emergency exit that does not operate as intended can have fatal consequences.
The intent of Airworthiness Directive AD/GENERAL/37, is to provide a regular check that any emergency exit will work as designed when needed.
Several recent cases have been found where an emergency exit has been installed in such a way that opening would have been hindered and in some cases impossible. Aluminium shear pins have been replaced with steel and in at least one case the exit was found riveted in!
Unfortunately, in some aircraft interiors, the operation of the emergency exit results in some disruption to the trim. However, after a crash landing, it would be a tragedy if those who survived the impact were unable to escape the subsequent fire because the emergency exit could not be opened.
That is the reason for AD/GENERAL/37. And please note that the exit needs to be COMPLETELY REMOVED to ensure that the restriction is not in that last action.