Engine parameter activated airplane exit locking system
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United States of America Patent
Stats
-
Nov 16, 1999
Grant Date -
N/A
app pub date -
Oct 15, 1997
filing date -
Oct 15, 1997
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An aircraft locking system (11) is provided that avoids inadvertent or deliberate operation of an aircraft exit opening means (50) during take-off roll, in-flight, or during landing. The aircraft locking system includes means for determining whether engines of the aircraft are running (12), means for determining thrust lever position (14), means for determining whether the aircraft is in an air mode or a ground mode (16), and means for determining whether a predetermined number of service/entry doors are closed (18). Means for generating a lock/unlock signal (32, 40) are responsive to the engine running determining means, the thrust lever position determining means, and the service/entry door-closed determining means.
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