# Incident 20211112001839I: Beech F33A, Mansfield, OH, November 12, 2021

- Type: FAA incident report (Accident/Incident Data System), as reported
- Date: November 12, 2021, 10:00 local time
- Place: Mansfield, OH
- Airport: Mansfield
- Damage: No damage
- Phase of flight: Cruise/Level Flight
- Operating rules: General operating rules (Part 91)
- Location: 40.3688° N, 83.8181° W: From the FAA
- Nearby events: https://openairdocs.org/map.md?lat=40.3688&lon=-83.8181&mi=10
- Aircraft: N9035Q, registered now (https://openairdocs.org/aircraft/N9035Q) (OpenAirDocs)
- Registry model: Beech F33A (registry code 1151425, https://openairdocs.org/model/beech-f33a) (OpenAirDocs)
- Registry engine: Continental IO-520 series (registry code 17032, https://openairdocs.org/engine/continental-io-520-series) (OpenAirDocs)
- Reported make and model: BEECH F33A
- Reported engine: CONT MOTOR IO 520 SERIES
- People aboard: 1
- Fatal injuries: 0
- Other injuries: 0
- Pilot certificates: Private pilot
- Pilot flight hours: 1,500 total
- NTSB investigation: [NTSB ENG22LA004](https://openairdocs.org/ntsb/ENG22LA004) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20211112001839I

## Narrative

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

WHILE ENROUTE FROM KMFD TO KEDJ AT 4,000MSL CRUISING ALTITUDE PILOT ENGAGED AUTOPILOT AND INMEDIATELEY EXPERIENCED AN ABRUPT PITCH DOWN CONTROL MOVEMENT. PILOT DISCONNETED AUTOPILOT,REDUCED POWER AND PULLED AUTOPILOT CIRCUIT BREAKERS. PILOT MANUALLY SPUN TRIM WHEEL UP TO RECOVER FROM DIVE LOOSING 1,500FT.  ONCE AT LEVEL FLIGH, PILOT CONTINUED TO KEDJ FOR AN UNVENTFUL LANDING.

## 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 ENG22LA004](https://openairdocs.org/ntsb/ENG22LA004), Nov 12, 2021: Beech F33 (N9035Q), Bellefontaine, OH, occurrence, minor damage. Probable cause: The internal failure of the autopilot pitch servo actuator that caused the autopilot to command a nose down movement of the pitch trim.

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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