# Incident 19870421040659I: Mooney M20K, Great Falls, MT, April 21, 1987

- Type: FAA incident report (Accident/Incident Data System), as reported
- Date: April 21, 1987, 11:28 local time
- Place: Great Falls, MT
- Airport: Great Falls International
- Phase of flight: Fcd/Prec Ldg From Cruise
- Operating rules: General operating rules (Part 91)
- Location: 47.4823° N, 111.3703° W: Placed by OpenAirDocs at GREAT FALLS INTL (GTF), within about a mile (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=47.4823&lon=-111.3703&mi=10
- Aircraft: N1164A, a cancelled registration (https://openairdocs.org/deregistered/N1164A-1991-08-13) (OpenAirDocs)
- Registry model: Mooney M20K (registry code 5870220, https://openairdocs.org/model/mooney-m20k) (OpenAirDocs)
- Reported make and model: MOONEY M20K
- Reported engine: CONT TSIO360GB
- People aboard: 3
- Fatal injuries: 0
- Pilot flight hours: 550 total, 400 in this make and model, 160 in the last 90 days
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/19870421040659I

## Narrative

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

RPM WENT BEYOND RED LINE AT CRUISE. ENGINE VIBRATED AND SURGED. SAFE LANDING. RIGHT MAGNETO BEARINGS CAME APART.

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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