# N51MR: 1944 North American/Aero Classics P-51D

- Status: Valid registration
- Airframe: [North American/Aero Classics P-51D](https://openairdocs.org/model/north-american-aero-classics-p-51d) (registry code 6402304, 1 seats)
- Engine: [Pkrd-Roll V1650 series](https://openairdocs.org/engine/pkrd-roll-v1650-series) (registry code 49001)
- Serial number: 44-73163
- Year built: 1944
- Type: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Limited
- Airworthiness date: September 8, 1961
- Certificate issued: April 19, 2013
- Expires: April 30, 2029
- Mode S code: A66039
- Registered owners: [Kempf Brothers Aviation Partnership](https://openairdocs.org/faa-owner/KEMPF%20BROTHERS%20AVIATION%20PARTNERSHIP), [Kempf Thomas M](https://openairdocs.org/faa-owner/KEMPF%20THOMAS%20M), [Kempf Randall P](https://openairdocs.org/faa-owner/KEMPF%20RANDALL%20P), [Kempf Douglas A](https://openairdocs.org/faa-owner/KEMPF%20DOUGLAS%20A)
- Location: [La Center, WA](https://openairdocs.org/faa-place/WA/La%20Center)
- Owner type: Partnership
- Owner's area on the map: 45.8749° N, 122.6208° W: Placed by OpenAirDocs at the center of ZIP code 98629, within about 3 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=51MR
- Page: https://openairdocs.org/aircraft/N51MR

From the FAA registry file of October 24, 2026. ADs below are matched by the registry's airframe and engine model codes. They may apply; each AD's applicability can narrow it by serial number, part number or installed equipment. This is not a compliance determination. The registry lists only the engine series, so ADs for every Pkrd-Roll V1650 model are included.

## ADs that may apply (OpenAirDocs): 0 in force

### Matched by airframe (North American/Aero Classics P-51D)

None in force.

### Matched by engine (Pkrd-Roll V1650 series)

None in force.

## Information bulletins (advisory)

None matched.

## 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 LAX89FA295](https://openairdocs.org/ntsb/LAX89FA295), Sep 3, 1989: North American P51D (N51MR), Mar Vista, CA, substantial damage. Probable cause: THE PILOT'S POOR IN-FLIGHT PLANNING IN ATTEMPTING TO IMMEDIATELY RETURN TO THE AIRPORT AND NOT FOLLOWING ESTABLISHED PROCEDURES AFTER THE LOSS OF POWER AFTER TAKEOFF. THE FAILURE OF AN INTAKE VALVE…

## 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 19890902033449A](https://openairdocs.org/incident/19890902033449A), Sep 2, 1989: Namer P51D (N51MR), Santa Monica, CA, Substantial damage. Rough engine,power loss on takeoff,tried to return. Stalled, hit a residence. Valve seat loosened jammed open valve

## Service difficulty reports

None filed for this aircraft. Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model.

## STCs that may be installed (OpenAirDocs)

None matched to this aircraft's models.

## Related

- Other North American/Aero Classics P-51D aircraft: https://openairdocs.org/model/north-american-aero-classics-p-51d/aircraft.md
- The Pkrd-Roll V1650 series engine: https://openairdocs.org/engine/pkrd-roll-v1650-series.md

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