# Accident 19900106000199A: Mooney M20B, Santa Ana, CA, January 6, 1990

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: January 6, 1990, 17:02 local time
- Place: Santa Ana, CA
- Airport: John Wayne Airport-Orange Cou
- Damage: Substantial damage
- Phase of flight: Forced Landing
- Operating rules: General operating rules (Part 91)
- Location: 33.6757° N, 117.8682° W: Placed by OpenAirDocs at , within about a mile (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=33.6757&lon=-117.8682&mi=10
- Aircraft: N74520, a cancelled registration (https://openairdocs.org/deregistered/N74520-1995-04-04) (OpenAirDocs)
- Registry model: Mooney M20B (registry code 5870206, https://openairdocs.org/model/mooney-m20b) (OpenAirDocs)
- Reported make and model: MOONEY M20B
- Reported engine: LYC O360A1D
- Fatal injuries: 0
- Pilot flight hours: 557 total, 86 in this make and model
- NTSB investigation: [NTSB LAX90LA066](https://openairdocs.org/ntsb/LAX90LA066) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/19900106000199A

## Narrative

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

LOST POWER ON FINAL. HIT LIGHT POLE IN PARKING LOT. IDLER GEAR SHAFT BOLTS SHEARED. IGNITION HARNESS SPRINGS ARCING

## 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 LAX90LA066](https://openairdocs.org/ntsb/LAX90LA066), Jan 7, 1990: Mooney M20B (N74520), Santa Ana, CA, substantial damage. Probable cause: THE FAILURE OF BOLTS RETAINING THE IDLER SHAFT ALLOWING THE CAM SHIFT TIMING TO CHANGE AND BY ITS FAILURE TO DRIVE THE LEFT MAGNETO.

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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