# N331SD: 1969 Schweizer TH55A/269A, registration cancelled 2022-02-05

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: February 5, 2022
- Status when cancelled: Registration expired, pending cancellation
- Airframe: [Schweizer TH55A/269A](https://openairdocs.org/model/schweizer-th55a-269a) (registry code 8059503)
- Engine: [Lycoming HIO-360 series](https://openairdocs.org/engine/lycoming-hio-360-series) (registry code 41524)
- Data sheets: [TCDS 4H12](https://openairdocs.org/tcds/4H12), [TCDS 1E10](https://openairdocs.org/tcds/1E10) (OpenAirDocs)
- Serial number: 291105
- Year built: 1969
- Type of aircraft: Rotorcraft
- Engine type: Reciprocating
- Airworthiness: Experimental, showing compliance
- Airworthiness date: February 25, 1994
- Certificate issued: October 29, 2015
- Last registry action: August 1, 2018
- Mode S code: A39B1A
- Owners when cancelled: [La Paz County Sheriffs Dept](https://openairdocs.org/faa-owner/LA%20PAZ%20COUNTY%20SHERIFFS%20DEPT), [Attn: Lt Donald Schlecht](https://openairdocs.org/faa-owner/ATTN%3A%20LT%20DONALD%20SCHLECHT)
- Location: [Parker, AZ](https://openairdocs.org/faa-place/AZ/Parker)
- Owner type: Government
- Owner's area on the map: 33.9114° N, 114.2572° W: Placed by OpenAirDocs at the center of ZIP code 85344, within about 17 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N331SD
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=331SD
- Page: https://openairdocs.org/deregistered/N331SD-2022-02-05

From the FAA registry file of October 29, 2026, cancelled registrations. Owners' street addresses are left out. The Mode S code belongs to the N-number, not the airframe.

ADs and bulletins for the Schweizer TH55A/269A: https://openairdocs.org/model/schweizer-th55a-269a.md

## Service difficulty reports (1)

Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model.

- [SDR 96ZZZX3911](https://openairdocs.org/sdr/96ZZZX3911), Jul 17, 1996: OIL SEAL. FAILED. DURING TRAINING FLIGHT, ENGINE ROUGHNESS 'FELT' IN-FLIGHT; FOUND MAGNETO POINTS SATURATED WITH OIL. REPLACED MAGNETO WITH REBUILT UNIT.

## NTSB investigations (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 LAX00TA355](https://openairdocs.org/ntsb/LAX00TA355), Sep 29, 2000: Hughes TH-55A (N331SD), Phoenix, AZ, substantial damage. Probable cause: the flight instructor's misjudged flare during a simulated autorotation, which led to a hard landing.

## FAA accident and incident reports (1)

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.

- [Accident 20000929014739A](https://openairdocs.org/incident/20000929014739A), Sep 29, 2000: Hughes TH55A (N331SD), Phoenix, AZ, No damage. (-23) The second pilot said PIC landed the a/c hard and he thought that is what caused the main rotor blade to strike the tail boom. Attached info.

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