NTSB Identification: CHI83IA105.
The docket is stored on NTSB microfiche number 23793.
Incident occurred Wednesday, February 09, 1983 in WILKES BARRE, PA
Aircraft: GATES LEARJET LR-25, registration: N4PN
Injuries: 3 Uninjured.

NTSB investigators used data provided by various sources and may not have traveled in support of this investigation to prepare this aircraft incident report.

ACFT AUTOPILOT/AUTOTRIM SYSTEM FAILED TO DISENGAGE DUE TO A MALFUNCTION OF THE ENGAGE SWITCH WHICH OCCURRED ONLY IN COLD ENVIRONMENT.

The National Transportation Safety Board determines the probable cause(s) of this incident to be:

AUTOPILOT/FLIGHT DIRECTOR,DISENGAGE UNIT..TOO COLD


Contributing Factors

WEATHER CONDITION

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