# Accident 20010625017179A: Cessna 172M, Napa, CA, June 25, 2001

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: June 25, 2001, 09:20 local time
- Place: Napa, CA
- Airport: Napa County Airport
- Damage: Substantial damage
- Phase of flight: Forced/Precautionary Landing
- Operating rules: General operating rules (Part 91)
- Location: 38.2000° N, 122.2667° W: From the FAA
- Nearby events: https://openairdocs.org/map.md?lat=38.2000&lon=-122.2667&mi=10
- Aircraft: N1409V, a cancelled registration (https://openairdocs.org/deregistered/N1409V-2017-05-31) (OpenAirDocs)
- Registry model: Cessna 172M (registry code 2072418, https://openairdocs.org/model/cessna-172m) (OpenAirDocs)
- Registry engine: Lycoming 0-320 series (registry code 41508, https://openairdocs.org/engine/lycoming-0-320-series) (OpenAirDocs)
- Reported make and model: CESSNA 172M
- Reported engine: LYC O320E2D
- People aboard: 2
- Fatal injuries: 0
- Pilot flight hours: 898 total, 343 in this make and model, 237 in the last 90 days
- NTSB investigation: [NTSB LAX01LA221](https://openairdocs.org/ntsb/LAX01LA221) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20010625017179A

## Narrative

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

(-23) POST ACCIDENT INVESTIGATION REVEALED A BENT PUSHROD ON #1 CYLINDER EXHAUST VALVE. (.4) DURING THE MISSED APPROACH THE ENGINE LOST POWER, WAS MANEUVERED TO LAND, AND CAME TO REST INVERTED AFTER THE NOSE WHEEL TOUCHED DOWN IN SOFT DIRT. THE PURPOSE OF THE FLIGHT WAS TO CONDUCT INSTRUMENT TRAINING AT LOCAL AREA AIRPORTS. THE FLIGHT HAD DEPARTED HOME BASE APPROXIMATELY AN HOUR AWAY FROM THE ACCIDENT AIRPORT. NO DISCREPANCIES WERE NOTED WITH THE ENGINE DURING THE FLIGHT OR THE APPROACH TO LAND. AS THE STUDENT REACHED MDA THE CFI INSTRUCTED THE STUDENT TO CONDUCT THE MISSED APPROACH. THEY CLIMBED STRAIGHT AHEAD TO 500 FEET MSL AND INITIATED A LEFT-HAND TURN FOR COMPLIANCE WITH THE MISSED APPROACH PROCEDURE. THE ENGINE BEGAN TO LOSE POWER. THE CFI DECLARED AN EMERGENCY AND CONDUCTED THE EMERGENCY CHECKLIST. SHE TURNED TOWARDS THE RUNWAY AND SLIPPED THE AIRPLANE DOWN LAND ON THE RUNWAY. DUE TO THE ALTITUDE, SHE KNEW THEY WOULD NOT MAKE THE RUNWAY, SO SHE ATTEMPTED TO LAND IN A GRASSY AREA PAST THE DEPARTURE END OF THE RUNWAY. AGAIN, THE AIRPLANE WAS TOO HIGH FOR LANDING AND SHE HAD TO MANEUVER TO AVOID THE AIRPORT PERIMETE                                                              R FENCE. THE CFI TURNED AWAY FROM THE FENCE. WHEN SHE RETURNED THE AIRPLANE TO WINGS LEVEL FLIGHT THE WHEELS TOUCHED DOWN. THE NOSE WHEEL DUG INTO THE SOFT DIRT AND THE AIRPLANE FLIPPED OVER. EXAMINATION OF THE ENGINE REVEALED THAT THE EXHAUST PUSH ROD HOUSING AND EXHAUST PUSH ROD WERE BENT. THE CRANKSHAFT WAS MANUALLY ROTATED ESTABLISHING VALVE TRAINING CONTINUITY. NO FURTHER DISCREPANCIES WERE NOTED WITH THE ENGINE.

## 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 LAX01LA221](https://openairdocs.org/ntsb/LAX01LA221), Jun 25, 2001: Cessna 172M (N1409V), Napa, CA, substantial damage. Probable cause: Loss of engine power due to the restricted movement of the number 1 exhaust valve that subsequently bent the exhaust push rod and push rod housing.

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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