The Bureau of Air Safety Investigation recommends that the Civil
Aviation Safety Authority reassess the appropriateness of the
current maintenance procedures for the testing of automatically
deployable passenger oxygen systems and cabin altitude alert
systems, to ensure complete system operation.
As a result of the investigation into this safety deficiency, the
Bureau simultaneously issues the following interim
recommendations:
IR19990150
The Bureau of Air Safety Investigation recommends that Raytheon
Aircraft develop and publish methods for the in-situ testing of the
automatically deployable passenger oxygen activation system and the
cabin altitude alert system on Beechcraft aircraft, to ensure
complete system operation.
IR19990152
The Bureau of Air Safety Investigation recommends that the Federal
Aviation Administration reassess the appropriateness of the current
maintenance procedures for the testing of automatically deployable
passenger oxygen systems and cabin altitude alert systems, to
ensure complete system operation.
IR19990153
The Bureau of Air Safety Investigation recommends that Raytheon
Aircraft consider the incorporation of an audible warning to
operate in conjunction with the cabin altitude alert system on all
Beech aircraft so equipped.
IR19990154
The Bureau of Air Safety Investigation recommends that the Civil
Aviation Safety Authority consider the incorporation of an audible
warning to operate in conjunction with the cabin altitude alert
system on Beech aircraft, and other aircraft so equipped.
IR19990155
The Bureau of Air Safety Investigation recommends that the Federal
Aviation Administration consider the incorporation of an audible
warning to operate in conjunction with the cabin altitude alert
system on Beech aircraft, and other aircraft so equipped.