# N24SG: 1974 Guilford BD-4, registration cancelled 2009-07-14

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: July 14, 2009
- Status when cancelled: Registration revoked
- Airframe: [Guilford BD-4](https://openairdocs.org/model/guilford-bd-4) (registry code 1130401)
- Engine: [Lycoming IO-320 series](https://openairdocs.org/engine/lycoming-io-320-series) (registry code 41509)
- Data sheets: [TCDS 1E12](https://openairdocs.org/tcds/1E12) (OpenAirDocs)
- Serial number: 24
- Year built: 1974
- Type of aircraft: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Experimental, amateur built
- Certificate issued: April 9, 1974
- Last registry action: April 16, 1977
- Mode S code: A22F3D
- Owners when cancelled: [Guilford Steven F](https://openairdocs.org/faa-owner/GUILFORD%20STEVEN%20F), [Guilford Gloria D](https://openairdocs.org/faa-owner/GUILFORD%20GLORIA%20D)
- Location: [Anaheim, CA](https://openairdocs.org/faa-place/CA/Anaheim)
- Owner type: Co-owned
- Owner's area on the map: 33.8180° N, 117.9752° W: Placed by OpenAirDocs at the center of ZIP code 92804, within about a mile (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N24SG
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=24SG
- Page: https://openairdocs.org/deregistered/N24SG-2009-07-14

From the FAA registry file of November 5, 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 Guilford BD-4: https://openairdocs.org/model/guilford-bd-4.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 LAX75FUA07](https://openairdocs.org/ntsb/LAX75FUA07), Aug 10, 1974: Lemburg BD-4 (N24SG), Fullerton, CA, substantial damage

## Other aircraft with N24SG

- [Registered now](https://openairdocs.org/aircraft/N24SG): Cessna 172, S/N 29764

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