# N9721B: Cessna 172RG, registration cancelled 1994-07-28

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: July 28, 1994
- Status when cancelled: Triennial form not returned
- Airframe: [Cessna 172RG](https://openairdocs.org/model/cessna-172rg) (registry code 2072438)
- Data sheets: [TCDS 3A17](https://openairdocs.org/tcds/3A17) (OpenAirDocs)
- Serial number: 172RG0991
- Type of aircraft: Fixed wing single engine
- Certificate issued: January 7, 1986
- Last registry action: May 18, 1994
- Mode S code: AD8D90
- Owners when cancelled: [Mccartney Gregory D](https://openairdocs.org/faa-owner/MCCARTNEY%20GREGORY%20D), [Kueck Dieter](https://openairdocs.org/faa-owner/KUECK%20DIETER)
- Location: [La Honda, CA](https://openairdocs.org/faa-place/CA/La%20Honda)
- Owner type: Partnership
- Owner's area on the map: 37.2690° N, 122.2215° W: Placed by OpenAirDocs at the center of ZIP code 94020, within about 4 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N9721B
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=9721B
- Page: https://openairdocs.org/deregistered/N9721B-1994-07-28

From the FAA registry file of November 3, 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 172RG: https://openairdocs.org/model/cessna-172rg.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 LAX91FA074](https://openairdocs.org/ntsb/LAX91FA074), Jan 15, 1991: Cessna 172RG (N9721B), Hayward, CA, destroyed, 1 fatal. Probable cause: THE PILOT'S FAILURE TO MAINTAIN ALTITUDE. CONTRIBUTING FACTORS RELATED TO THE PILOT'S IMPROPER VFR PROCEDURES AND HIS MISJUDGED EVALUATION OF THE WEATHER IN DAYLIGHT CONDITIONS. ADDITIONAL FACTORS…

## FAA accident and incident reports (1)

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [Accident 19910115000549A](https://openairdocs.org/incident/19910115000549A), Jan 15, 1991: Cessna 172RG (N9721B), Hayward, CA, Destroyed, 1 fatal. Crashed into bay during low altitude special VFR. Wreckage indicates high speed impact. Glassy water vertigo factor

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