# N7998B: 1957 Cessna 172, registration cancelled 2017-11-21

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: November 21, 2017
- Status when cancelled: Revoked, canceled
- Airframe: [Cessna 172](https://openairdocs.org/model/cessna-172) (registry code 2072402)
- Engine: [Continental 0-300 series](https://openairdocs.org/engine/continental-0-300-series) (registry code 17022)
- Data sheets: [TCDS 3A12](https://openairdocs.org/tcds/3A12), [TCDS E-253](https://openairdocs.org/tcds/E-253) (OpenAirDocs)
- Serial number: 29798
- Year built: 1957
- Type of aircraft: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Standard
- Certificate issued: May 23, 1966
- Last registry action: January 14, 1977
- Mode S code: AADCE6
- Owners when cancelled: [Rolfe Hal C O](https://openairdocs.org/faa-owner/ROLFE%20HAL%20C%20O), [Westergard Gerald](https://openairdocs.org/faa-owner/WESTERGARD%20GERALD), [Nunley Wm T](https://openairdocs.org/faa-owner/NUNLEY%20WM%20T)
- Location: [Murray, UT](https://openairdocs.org/faa-place/UT/Murray)
- Owner type: Co-owned
- Owner's area on the map: 40.6580° N, 111.8845° W: Placed by OpenAirDocs at the center of ZIP code 84107, within about 2 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N7998B
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=7998B
- Page: https://openairdocs.org/deregistered/N7998B-2017-11-21

From the FAA registry file of October 31, 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 Cessna 172: https://openairdocs.org/model/cessna-172.md

## NTSB investigations (2)

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 DEN68D0017](https://openairdocs.org/ntsb/DEN68D0017), Jun 18, 1967: Cessna 172 (N7998B), Vernon, UT, substantial damage
- [NTSB LAX65F0065](https://openairdocs.org/ntsb/LAX65F0065), Mar 2, 1965: Cessna 172 (N7998B), Huntington Bc, CA, substantial damage

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.