# N44623: 1945 Beech D18S, registration cancelled 2017-10-06

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: October 6, 2017
- Status when cancelled: Registration expired, pending cancellation
- Airframe: [Beech D18S](https://openairdocs.org/model/beech-d18s) (registry code 1151004)
- Engine: [Pratt & Whitney R-985 series](https://openairdocs.org/engine/pratt-whitney-r-985-series) (registry code 52008)
- Data sheets: [TCDS A-765](https://openairdocs.org/tcds/A-765) (OpenAirDocs)
- Serial number: A-31
- Year built: 1945
- Type of aircraft: Fixed wing multi engine
- Engine type: Reciprocating
- Airworthiness: Standard
- Airworthiness date: June 29, 1956
- Certificate issued: March 9, 1995
- Last registry action: March 30, 2011
- Mode S code: A563A1
- Owners when cancelled: [J W Duff Aircraft Co](https://openairdocs.org/faa-owner/J%20W%20DUFF%20AIRCRAFT%20CO), [Duff J W](https://openairdocs.org/faa-owner/DUFF%20J%20W)
- Location: [Denver, CO](https://openairdocs.org/faa-place/CO/Denver)
- Owner type: Individual
- Owner's area on the map: 39.7614° N, 104.9167° W: Placed by OpenAirDocs at the center of ZIP code 80207, within about a mile (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N44623
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=44623
- Page: https://openairdocs.org/deregistered/N44623-2017-10-06

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 D18S: https://openairdocs.org/model/beech-d18s.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 DEN91LA073](https://openairdocs.org/ntsb/DEN91LA073), May 18, 1991: Beech D18-S (N44623), Englewood, CO, substantial damage. Probable cause: THE LOSS OF DIRECTIONAL CONTROL BY THE PILOT. FACTORS WERE: THE CROSS, FAILURE OF THE PILOT TO LOCK THE TAIL WHEEL, AND THE PILOT'S DISREGARD OF CROSSWIND LIMITATIONS.

## 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 19910518016319A](https://openairdocs.org/incident/19910518016319A), May 18, 1991: Beech D18S (N44623), Denver, CO, Substantial damage. Ground looped on takeoff roll in a strong gust quartering crosswind. Had neglected to insure tailwheel was locked.

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