# N9421B: 2003 Block Joseph D GLASTAR

- Status: Valid registration
- Airframe: [Block Joseph D GLASTAR](https://openairdocs.org/model/block-joseph-d-glastar) (registry code 05611YB, 2 seats)
- Engine: [Amateur-built UNKNOWN ENG](https://openairdocs.org/engine/amateur-built-unknown-eng) (registry code 99999)
- Serial number: 5363
- Year built: 2003
- Type: Fixed wing single engine
- Engine type: Reciprocating
- Kit: Stoddard Hamilton GLASTAR
- Airworthiness: Experimental, amateur built
- Airworthiness date: May 22, 2003
- Certificate issued: December 2, 2022
- Expires: December 31, 2029
- Mode S code: AD1713
- Registered owner: [Saddleback Trucking LLC](https://openairdocs.org/faa-owner/SADDLEBACK%20TRUCKING%20LLC)
- Location: [Douglas, WY](https://openairdocs.org/faa-place/WY/Douglas)
- Owner type: LLC
- Owner's area on the map: 43.0221° N, 105.3919° W: Placed by OpenAirDocs at the center of ZIP code 82633, within about 29 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=9421B
- Page: https://openairdocs.org/aircraft/N9421B

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 (Block Joseph D GLASTAR)

None in force.

### Matched by engine (Amateur-built UNKNOWN ENG)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N9421B.

## FAA accident and incident reports

None matched to N9421B.

## 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 N9421B

The FAA can reassign an N-number once a registration is cancelled. These aircraft carried N9421B before.

- [Cancelled 1958-07-17](https://openairdocs.org/deregistered/N9421B-1958-07-17): Cessna 175, S/N 55221. Owner: [Cessna Aircraft Co](https://openairdocs.org/faa-owner/CESSNA%20AIRCRAFT%20CO), [Wichita, KS](https://openairdocs.org/faa-place/KS/Wichita)
- [Cancelled (date not recorded)](https://openairdocs.org/deregistered/N9421B-undated): Cessna 172RG, S/N 172RG0819. N-number assigned, not yet registered

## Related

- Other Block Joseph D GLASTAR aircraft: https://openairdocs.org/model/block-joseph-d-glastar/aircraft.md
- The Amateur-built UNKNOWN ENG engine: https://openairdocs.org/engine/amateur-built-unknown-eng.md

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