# Accident 19900412009129A: Piper PA11, Knik Glacier, AK, April 12, 1990

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: April 12, 1990, 20:30 local time
- Place: Knik Glacier, AK
- Damage: Substantial damage
- Phase of flight: Low Level Operations
- Operating rules: General operating rules (Part 91)
- Aircraft: N4904M, a cancelled registration (https://openairdocs.org/deregistered/N4904M-2013-07-02) (OpenAirDocs)
- Registry model: Piper PA-11 (registry code 7101102, https://openairdocs.org/model/piper-pa-11) (OpenAirDocs)
- Registry engine: Continental A&C65 series (registry code 17003, https://openairdocs.org/engine/continental-a-c65-series) (OpenAirDocs)
- Reported make and model: PIPER PA11
- Reported engine: LYC O290D
- Fatal injuries: 0
- Pilot flight hours: 482 total, 322 in this make and model, 9 in the last 90 days
- NTSB investigation: [NTSB ANC90LA055](https://openairdocs.org/ntsb/ANC90LA055) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/19900412009129A

## Narrative

As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^.

CONTROL STICK JAMMED IN RIGHT TURN AT LOW ALTITUDE. STRUCK GROUND. FOUND CHANNEL LOCK PLIERS JAMMED REAR STICK.

## The NTSB's investigation of this event (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB ANC90LA055](https://openairdocs.org/ntsb/ANC90LA055), Apr 13, 1990: Piper PA-11 (N4904M), Knik Clacier, AK, substantial damage. Probable cause: A FOREIGN OBJECT (TOOL) HAD JAMMED THE AILERON CONTROLS TO THE RIGHT AS THE PILOT WAS MANEUVERING THE AIRCRAFT FOR A LOW APPROACH TO A STRIP.

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. For accidents, the NTSB's own investigation is the fuller record.

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