# Accident 20040709026469A: Beech N35, Austin, MN, July 9, 2004

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: July 9, 2004, 13:00 local time
- Place: Austin, MN
- Damage: Substantial damage
- Phase of flight: Normal Cruise
- Operating rules: General operating rules (Part 91)
- Location: 43.6694° N, 92.9694° W: From the FAA, an estimate near the named town, within about 3 miles
- Nearby events: https://openairdocs.org/map.md?lat=43.6694&lon=-92.9694&mi=10
- Aircraft: N80HL, registered now (https://openairdocs.org/aircraft/N80HL) (OpenAirDocs)
- Registry model: Beech N35 (registry code 1151528, https://openairdocs.org/model/beech-n35) (OpenAirDocs)
- Registry engine: Continental I0-470 series (registry code 17027, https://openairdocs.org/engine/continental-i0-470-series) (OpenAirDocs)
- Reported make and model: BEECH N35
- Reported engine: CONT IO470*
- People aboard: 4
- Fatal injuries: 0
- Pilot flight hours: 875 total, 450 in this make and model, 41 in the last 90 days
- NTSB investigation: [NTSB CHI04LA181](https://openairdocs.org/ntsb/CHI04LA181) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20040709026469A

## Narrative

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

(-23) AIRCRAFT IN CRUISE FLIGHT WHEN ENGINE SUDDENLY OVERSPED. PILOT WAS UNABLE TO CONTROL RPM WITH THE PROPELLER CONTROL. PROP RPM STABILIZED AT 2500 RPM WITH THROTTLE REDUCTION TO 15 INCHES MAP. PILOT NOTED AN OIL PRESSURE INDICATION OF ZERO. APPROXIMATELY 30 SECONDS LATER, AIRCRAFT BEGAN TO SHAKE; WHITE SMOKE ENTERED THE CABIN, AND OIL APPEARED ON THE WINDSHIELD. AFTER ONSET OF AIRFRAME SHAKING, THE PILOT SENSED THAT ALL POWER WAS LOST. HE SUBSEQUENTLY SECURED THE ENGINED BY PULLING THE MIXTURE CONTROL TO IDLE CUTOFF. UNABLE TO MAKE IT TO AN AIRPORT, THE PILOT CHOSE A FIELD AND MANEUVERED FOR AN EMERGENCY LANDING. THE FIELD WAS MUDDY. PILOT LANDED GEAR-UP.

## 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 CHI04LA181](https://openairdocs.org/ntsb/CHI04LA181), Jul 9, 2004: Beech BE-N35 (N80HL), Austin, MN, substantial damage. Probable cause: The loss of engine power due to the fatigue fracture of the piston pin plug that lead to engine oil starvation/exhaustion and the subsequent overload fracture of the piston rod and crankcase.

## Other reports on N80HL (2)

Matched to the same aircraft by N-number and date.

- [Incident 20020110008059I](https://openairdocs.org/incident/20020110008059I), Jan 10, 2002: Beech N35 (N80HL), Des Moines, IA, Minor damage. (-23) The aircraft was on a maintenance test flight with a rated pilot in the left seat and an a & p mechanic in the right seat. After completing some rigging…
- [Incident 19880128007019I](https://openairdocs.org/incident/19880128007019I), Jan 28, 1988: Beech N35 (N80HL), Terre Haute, IN, Minor damage. Nose wheel collapsed after running off runway while taxiing for takeoff. Nose gear hit runway marker and snowbank.

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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