# N923AU: Aero Union P3A

- Status: Valid registration
- Airframe: [Aero Union P3A](https://openairdocs.org/model/aero-union-p3a) (registry code 5780800, 2 seats)
- Engine: [Allison T-56-A-10W](https://openairdocs.org/engine/allison-t-56-a-10w) (registry code 03032)
- Data sheets: [TCDS T00006LA](https://openairdocs.org/tcds/T00006LA) (United Aeronautical Corporation) (OpenAirDocs)
- Serial number: 151372
- Type: Fixed wing multi engine
- Engine type: Turbo-prop
- Airworthiness: Restricted, forest
- Airworthiness date: April 25, 2011
- Certificate issued: May 14, 2025
- Expires: May 31, 2032
- Mode S code: ACC962
- Registered owner: [United Aeronautical Corp](https://openairdocs.org/faa-owner/UNITED%20AERONAUTICAL%20CORP)
- Location: [North Hollywood, CA](https://openairdocs.org/faa-place/CA/North%20Hollywood)
- Owner type: Corporation
- Owner's area on the map: 34.2073° N, 118.4010° W: Placed by OpenAirDocs at the center of ZIP code 91605, 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=923AU
- Page: https://openairdocs.org/aircraft/N923AU

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): 2 in force

### Matched by airframe (Aero Union P3A)

- [AD 2018-11-02](https://openairdocs.org/ad/2018-11-02): Flight Controls · Lockheed Martin 188A, 188C, P3A and 2 more. Effective May 23, 2018
- [AD 2014-11-06](https://openairdocs.org/ad/2014-11-06): Stabilizers, Wings · Aero Union P3A and P-3A. Effective Jul 8, 2014

### Matched by engine (Allison T-56-A-10W)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N923AU.

## FAA accident and incident reports

None matched to N923AU.

## Service difficulty reports (1)

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

- [SDR 2021FA0000011](https://openairdocs.org/sdr/2021FA0000011), Sep 25, 2020: CONTROL PANEL. INFLT SEPARATION. DURING OPERATION AN AIR CONTROL PANEL FAILED AND SEPARATED FROM THE AIRCRAFT. THE AIR CONTROL PANEL FAILED BEHIND THE NUMBER 4 NACELLE. DUE TO THE FAILURE OF TH

## STCs that may be installed (OpenAirDocs) (4)

Approved for this aircraft's airframe or engine model, in force first, then newest. The registry doesn't record which STCs an aircraft has; its records do.

### Approved for the airframe (Aero Union P3A)

- [STC ST04186AT](https://openairdocs.org/stc/ST04186AT): Incorporation of P3A Airworthiness Limitation Section for aircraft operated in Restricted Category for the special mission of aerial dispensing of liquids. Avenger Aerospace Solutions Inc
- [STC ST00788LA](https://openairdocs.org/stc/ST00788LA): Installation of a Champion or Unison engine ignition system. United Aeronautical Corporation
- [STC ST00792LA](https://openairdocs.org/stc/ST00792LA): Installation of Retardant Tanks for the special purpose of Forest and Wildlife Conservation. United Aeronautical Corporation
- [STC ST03718AT](https://openairdocs.org/stc/ST03718AT): Incorporation of P3A Airworthiness Limitation Section for aircraft operated in Restricted Category for the special mission of aerial dispensing of liquids in accordance with Avenger Aircraft and Services Report No. AAS-MDL-09-002, Revision NC dated April 30, 2009, or later FAA approved revision. Avenger Aircraft and Services

## Related

- Other Aero Union P3A aircraft: https://openairdocs.org/model/aero-union-p3a/aircraft.md
- The Allison T-56-A-10W engine: https://openairdocs.org/engine/allison-t-56-a-10w.md

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