# Accident 20030112000799A: Mooney M20F, Tacoma, WA, January 12, 2003

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: January 12, 2003, 15:47 local time
- Place: Tacoma, WA
- Airport: Tacoma Naarrows Airport
- Damage: Substantial damage
- Operating rules: General operating rules (Part 91)
- Location: 47.2764° N, 122.5769° W: From the FAA
- Nearby events: https://openairdocs.org/map.md?lat=47.2764&lon=-122.5769&mi=10
- Aircraft: N6442Q, registered now (https://openairdocs.org/aircraft/N6442Q) (OpenAirDocs)
- Registry model: Mooney M20F (registry code 5870214, https://openairdocs.org/model/mooney-m20f) (OpenAirDocs)
- Registry engine: Lycoming I0360 series (registry code 41515, https://openairdocs.org/engine/lycoming-i0360-series) (OpenAirDocs)
- Reported make and model: MOONEY M20F
- NTSB investigation: [NTSB SEA03FA025](https://openairdocs.org/ntsb/SEA03FA025) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20030112000799A

## Narrative

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

(-23) WHILE CRUISING AT APPROX. 1500 FT. ALTITUDE THE ENGINE STARTED RUNNING ROUGH AND QUIT. INSPECTION OF THE AIRCRAFT AND ENGINE ON 1-13-03 REVEALED THE ENGINE COULD NOT BE ROTATED AND THE LEFT MAGNETO ATTACH NUTS WERE MISSING. THE MAGNETO WAS LOOSE ON THE ACCESSORY CASE. ENGINE TEARDOWN ON 1-23-03 REVEALED A BROKEN CRANKSHAFT AT #4 ROD JOURNAL. THE CRANKSHAFT HAS BEEN SENT TO THE NTSB LABORATORY TO DETERMINE THE CAUSE OF FAILURE.

## 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 SEA03FA025](https://openairdocs.org/ntsb/SEA03FA025), Jan 12, 2003: Mooney M20F (N6442Q), Tacoma, WA, substantial damage. Probable cause: A loss of engine power during cruise flight due to fatigue failure of the crankshaft as a result of an inadequate quality of material during the manufacturing process. Trees were a factor.

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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