# N172M: Beech G18S, registration cancelled 1983-07-20

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: July 20, 1983
- Status when cancelled: Administratively canceled
- Airframe: [Beech G18S](https://openairdocs.org/model/beech-g18s) (registry code 1151010)
- Data sheets: [TCDS A-765](https://openairdocs.org/tcds/A-765) (OpenAirDocs)
- Serial number: BA608
- Type of aircraft: Fixed wing multi engine
- Certificate issued: June 12, 1980
- Last registry action: July 22, 1983
- Mode S code: A121AE
- Owner when cancelled: [Aero Marine Surveys Inc](https://openairdocs.org/faa-owner/AERO%20MARINE%20SURVEYS%20INC)
- Location: [Groton, CT](https://openairdocs.org/faa-place/CT/Groton)
- Owner type: Corporation
- Owner's area on the map: 41.3522° N, 72.0406° W: Placed by OpenAirDocs at the center of ZIP code 06340, within about 3 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N172M
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=172M
- Page: https://openairdocs.org/deregistered/N172M-1983-07-20

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 Beech G18S: https://openairdocs.org/model/beech-g18s.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 DEN75AD030](https://openairdocs.org/ntsb/DEN75AD030), Dec 12, 1974: Beech 18 (N172M), Denver, CO, substantial damage

## 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 19741212040609A](https://openairdocs.org/incident/19741212040609A), Dec 12, 1974: Beech G18S (N172M), Denver, CO, Substantial damage. Scheduled mail contract,winds gusting to 25KTS.radio intermittent. Rwy 26L avail. Tkof on rwy 35.

## Other aircraft with N172M

- [Cancelled 2012-06-18](https://openairdocs.org/deregistered/N172M-2012-06-18): Cessna 172M, S/N 17262322, built 1973. Registration expired, pending cancellation. Owner: [Lone Star Aircraft Rental Inc](https://openairdocs.org/faa-owner/LONE%20STAR%20AIRCRAFT%20RENTAL%20INC), [Dallas, TX](https://openairdocs.org/faa-place/TX/Dallas)
- [Cancelled 1934-02-13](https://openairdocs.org/deregistered/N172M-1934-02-13): New Standard D-29 SPECIAL, S/N 1026, built 1930. Owner: [Groff Carl R](https://openairdocs.org/faa-owner/GROFF%20CARL%20R), [Los Angeles, CA](https://openairdocs.org/faa-place/CA/Los%20Angeles)

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