FLIGHT FINDINGSAVIATION OCCURRENCE MAP
Back to map

LAX89LA183 · Piper PA-24

6 May 1989 · Montague, CA, United States

Piper PA-24 · Accident: gear not extended during landing

From Watsonville Municipal Airport (WVI) to 105

Report a problem

Event

NTSB case
LAX89LA183
Event typeAccident: someone killed or seriously injured, or the aircraft substantially damaged (NTSB definition). Incident: an occurrence that affected or could have affected safety, short of that. Glossary
Accident
InvestigationHow far the investigation had got when the record was published: preliminary, ongoing, final or completed. Unknown where the source does not say. Glossary
Completed
API-reported fatalities
0 · all aircraft and ground
Ground fatalities
0
OperationWhat kind of flying it was, grouped by the rules it flew under: airline (US Part 121), air taxi and commuter (Part 135), general aviation (Part 91 and similar), military or government. Glossary
General aviation
WeatherVisual meteorological conditions (VMC): good enough to fly by looking outside. Instrument conditions (IMC): cloud or low visibility, flying by instruments. Glossary
Visual Meteorological Cond

Piper PA-24

Aircraft type
Piper PA-24
Category
Airplane
RegistrationThe aircraft's tail number, such as N12345 or G-ABCD. Registrations are reissued, so the same one years apart can be a different aircraft. Glossary
N550V
Onboard fatalities
Unknown
Route
From Watsonville Municipal Airport (WVI), Watsonville, CATo 105
Aircraft age
Not recorded
Flight rulesThe regulations the flight operated under: in the US, Part 91 (general aviation), Part 121 (airlines), Part 135 (air taxi and commuter) and others; for flights abroad, the NTSB's coarser commercial or non-commercial code. Glossary
Part 91: General Aviation
Phase of flightThe stage of the flight when things started to go wrong: standing, taxi, takeoff, initial climb, en route, maneuvering, approach or landing. Glossary
Landing
First occurrenceThe single coded event the NTSB judges best describes what happened (records from 2008 on). Older records name the first occurrence in the sequence instead. Glossary
Gear not extended
DamageDestroyed: beyond practical repair. Substantial: damage that affects the structure, performance or handling and normally needs major repair. Minor: less than that. Glossary
Substantial

Cause areas

  • Landing gear, emergency extension assembly › Not engaged
  • Pilot in command › Wheels up landing, inadvertent

Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.

NTSB narrative

THE AIRPLANE LANDED WITH THE LANDING GEAR RETRACTED. THE AIRPLANE HAD RECENTLY UNDERGONE REPLACEMENT ON THE LANDING GEAR TRANSMISSION AND MAINTENANCE ON THE GEAR SYSTEM. AFTER THE AIRPLANE WAS RAISED FROM THE RUNWAY, THE LANDING GEAR WAS EXTENDED MANUALLY. POST ACCIDENT INVESTIGATION REVEALED THE GEAR MOTOR CIRCUIT BREAKER WAS POPPED. FURTHER INVESTIGATION INDICATED THE GEAR MOTOR WAS BINDING BECAUSE OF INSUFFICIENT ADJUSTMENT BETWEEN THE TRANSMISSION AND GEAR MOTOR. THIS AIRPLANE IS EQUIPPED WITH A MANUAL EXTENSION SYSTEM THAT ALSO SERVES AS A SECONDARY GEAR POSITION INDICATOR. IF THE LANDING GEAR IS MOVING BY ELECTRICAL ACTUATION, THE MANUAL EXTENSION SYSTEM IS ALSO MOVING AT THE SAME TIME.

Probable cause

THE PILOT'S FAILURE TO EXTEND THE LANDING GEAR BECAUSE OF INATTENTION. CONTRIBUTING TO THE ACCIDENT WAS INADEQUATE MAINTENANCE OF THE AIRPLANE WHICH FAILED TO REPAIR THE LANDING GEAR WARNING THROTTLE POSITION SWITCH.

Verbatim NTSB analysis and probable cause from the NTSB dataset

Sources

NTSB record LAX89LA183
Event ID
20001213X28343
Case number
LAX89LA183
Dataset
historical-pre2008
Source SHA-256
89e2df6d848e7ab3b42e7d7c7a03ff403303057a26ca04c95b3ea67201c3ce74
Source notes (4)
  • Unreviewed is an editorial label, not an investigation status. API-sourced is not report-checked or human-reviewed. Explicit event totals are used without summing aircraft injury tables; onboard allocation is withheld. Unknown values remain unknown. The operation category is mapped from the NTSB-reported FAR part and has not been reviewed.
  • Filled from the NTSB case API where the bulk record had no value: investigation status. Values present in the bulk record are kept.
  • The date is the local date, which is the same as the UTC date the NTSB stores.
  • API snapshot SHA-256: 3b3886583389126f92c9ccf8a138a1fbd173e91d703302ea4b43b7c4c32c052c; retrieved 2026-09-23T07:38:25.184Z.