# N77UK: 2013 Alexander Schleicher ASH 31 MI

- Status: Valid registration
- Airframe: [Alexander Schleicher ASH 31 MI](https://openairdocs.org/model/alexander-schleicher-ash-31-mi) (registry code 3801549, 1 seats)
- Engine: [Diamond AE50R](https://openairdocs.org/engine/diamond-ae50r) (registry code 21100)
- Serial number: 31088
- Year built: 2013
- Type: Glider
- Engine type: Rotary
- Airworthiness: Experimental, racing
- Airworthiness date: July 2, 2013
- Certificate issued: June 25, 2013
- Expires: June 30, 2029
- Mode S code: AA687A
- Registered owner: [Cumming Duncan](https://openairdocs.org/faa-owner/CUMMING%20DUNCAN)
- Location: [San Pedro, CA](https://openairdocs.org/faa-place/CA/San%20Pedro)
- Owner type: Individual
- Owner's area on the map: 33.7373° N, 118.3134° W: Placed by OpenAirDocs at the center of ZIP code 90732, within about a mile (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=77UK
- Page: https://openairdocs.org/aircraft/N77UK

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.

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

### Matched by airframe (Alexander Schleicher ASH 31 MI)

None in force.

### Matched by engine (Diamond AE50R)

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 WPR26LA158](https://openairdocs.org/ntsb/WPR26LA158), Apr 13, 2026: Alexander Schleicher ASH 31 MI (N77UK), Williams, CA, substantial damage, investigation ongoing

## 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 20260413003419A](https://openairdocs.org/incident/20260413003419A), Apr 13, 2026: Alexander Schleicher Gmbh & Co ASH 31 MI (N77UK), Williams, CA, Substantial damage. On April 13th 2026, a mototglider self-launched from CN12 after having maintenance completed and experienced power loss at 200 AGL. Pilot elected to return to…

## 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.

## Earlier aircraft with N77UK

The FAA can reassign an N-number once a registration is cancelled. These aircraft carried N77UK before.

- [Cancelled 2003-02-10](https://openairdocs.org/deregistered/N77UK-2003-02-10): Cooper John C AIR COMMAND ELITE, S/N 9281, built 1992. Non-citizen corporation, flight hours not reported. Owner: [N5663u Inc](https://openairdocs.org/faa-owner/N5663U%20INC), [Daytona Beach, FL](https://openairdocs.org/faa-place/FL/Daytona%20Beach)

## Related

- Other Alexander Schleicher ASH 31 MI aircraft: https://openairdocs.org/model/alexander-schleicher-ash-31-mi/aircraft.md
- The Diamond AE50R engine: https://openairdocs.org/engine/diamond-ae50r.md

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