# N28BJ: 1981 OTT William F HUMMER-A, registration cancelled 2013-06-04

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: June 4, 2013
- Status when cancelled: Registration expired, pending cancellation
- Airframe: [OTT William F HUMMER-A](https://openairdocs.org/model/ott-william-f-hummer-a) (registry code 05644AP)
- Engine: [Zenoah ALL MDLS A/B](https://openairdocs.org/engine/zenoah-all-mdls-a-b) (registry code 72000)
- Serial number: 0028A
- Year built: 1981
- Type of aircraft: Fixed wing single engine
- Engine type: 2 cycle
- Airworthiness: Experimental, amateur built
- Airworthiness date: July 11, 1981
- Certificate issued: October 28, 1980
- Last registry action: January 10, 1987
- Mode S code: A2CBC4
- Owner when cancelled: [Ott William F](https://openairdocs.org/faa-owner/OTT%20WILLIAM%20F)
- Location: [Bisbee, AZ](https://openairdocs.org/faa-place/AZ/Bisbee)
- Owner type: Individual
- Owner's area on the map: 31.4272° N, 109.9105° W: Placed by OpenAirDocs at the center of ZIP code 85603, within about 9 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N28BJ
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=28BJ
- Page: https://openairdocs.org/deregistered/N28BJ-2013-06-04

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 OTT William F HUMMER-A: https://openairdocs.org/model/ott-william-f-hummer-a.md

## Other aircraft with N28BJ

- [Registered now](https://openairdocs.org/aircraft/N28BJ): Piper PA-34-220T, S/N 34-47017, built 1996

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