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Aviation safety reports, made easier to study

NTSB Reports is an independent research and search tool for public aviation accident and incident records. It brings NTSB aviation reports, structured fields, docket files, extracted figures, photos, videos, and update history into one searchable interface.

The goal is practical safety education: make it faster to find relevant investigations, compare similar events, review factual records, and understand the evidence behind probable-cause and preliminary reports.

The investigative work and source records belong to the National Transportation Safety Board and the published investigation record. This site is not affiliated with or endorsed by the NTSB.

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NTSB Report

February 9, 1983 · Gates Learjet LR-25 · N4PN

Wilkes Barre, PA

Overview

Report Status

Preliminary report

Event Type

Incident

Date

February 9, 1983

Injury Outcomes

No injuries (3 uninjured)

Location

Wilkes Barre, PA

Aircraft

Gates Learjet LR-25

Tail Number

N4PN

Injuries

None

NTSB Number

CHI83IA105

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

Full Narrative

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

Flight

Event TypeIncident

Event Time08:55 EST

Nearest Airport0nm N

Runway0

Flight Plan FiledIFR

Aircraft FireNo

Aircraft ExplosionNo

Aircraft

AircraftGates Learjet LR-25

Tail NumberN4PN

Aircraft CategoryAir

Operating RulePart 91

Engines2

Engine TypeTurbojet

Engine DetailsGe · CJ 610-6 · Turbojet

Seats8

People & Injuries

Injury SummaryNo injuries (3 uninjured)

Fatal0

Serious0

Minor0

Uninjured3

Total3

Crew 1Age 61 · First Class

Conditions

ConditionsVMC

LightDaylight

Wind320° @ 9 kt

CeilingOvercast 25000 ft

Temperature / Dew Point19 C / 7 C

Altimeter0

Observation Time14:00

Weather SourceWFAC

500 – Data service is offline

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February 9, 1983 · Gates Learjet LR-25 · N4PN

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Appendix: Source Data

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