# N503U: Aero Commander 1121, registration cancelled 2013-11-08

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: November 8, 2013
- Status when cancelled: Registration expired, pending cancellation
- Airframe: [Aero Commander 1121](https://openairdocs.org/model/aero-commander-1121) (registry code 0142002)
- Data sheets: [TCDS A2SW](https://openairdocs.org/tcds/A2SW) (OpenAirDocs)
- Serial number: 83
- Type of aircraft: Fixed wing multi engine
- Airworthiness: Standard, transport
- Airworthiness date: September 7, 1983
- Certificate issued: July 17, 1995
- Last registry action: August 21, 2007
- Mode S code: A646D7
- Owner when cancelled: [Double H Inc](https://openairdocs.org/faa-owner/DOUBLE%20H%20INC)
- Location: [Wilmington, DE](https://openairdocs.org/faa-place/DE/Wilmington)
- Physical address: [Ruskin, FL](https://openairdocs.org/faa-place/FL/Ruskin)
- Owner type: Corporation
- Owner's area on the map: 39.7357° N, 75.5321° W: Placed by OpenAirDocs: center of Wilmington, DE, within about 2 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N503U
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=503U
- Page: https://openairdocs.org/deregistered/N503U-2013-11-08

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 Aero Commander 1121: https://openairdocs.org/model/aero-commander-1121.md

## 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 MIA96WA046](https://openairdocs.org/ntsb/MIA96WA046), Dec 14, 1995: Aero Commander 1121 (N503U), Guatemala City, Guatemala, destroyed, 2 fatal

## Other aircraft with N503U

- [Registered now](https://openairdocs.org/aircraft/N503U): Costruzioni Aeronautiche Tecna P2010, S/N 103/US, built 2019

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