# N9004M: 1995 Weatherly 620B, registration cancelled 2019-12-17

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: December 17, 2019
- Status when cancelled: First renewal notice
- Airframe: [Weatherly 620B](https://openairdocs.org/model/weatherly-620b) (registry code 9630605)
- Engine: [Pratt & Whitney R-985 series](https://openairdocs.org/engine/pratt-whitney-r-985-series) (registry code 52008)
- Data sheets: [TCDS A26WE](https://openairdocs.org/tcds/A26WE) (OpenAirDocs)
- Serial number: 1604
- Year built: 1995
- Type of aircraft: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Restricted, agriculture and pest control
- Airworthiness date: September 8, 1995
- Certificate issued: April 7, 2014
- Last registry action: December 19, 2016
- Mode S code: AC721C
- Owner when cancelled: [Skyline Aviation LLC](https://openairdocs.org/faa-owner/SKYLINE%20AVIATION%20LLC)
- Location: [Lewistown, MT](https://openairdocs.org/faa-place/MT/Lewistown)
- Owner type: LLC
- Owner's area on the map: 47.1397° N, 109.3109° W: Placed by OpenAirDocs at the center of ZIP code 59457, within about 18 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N9004M
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=9004M
- Page: https://openairdocs.org/deregistered/N9004M-2019-12-17

From the FAA registry file of November 4, 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 Weatherly 620B: https://openairdocs.org/model/weatherly-620b.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 GAA17CA225](https://openairdocs.org/ntsb/GAA17CA225), Apr 10, 2017: Weatherly 620B (N9004M), Lewistown, MT, substantial damage. Probable cause: The pilot’s failure to maintain altitude during low-altitude maneuvers in flat light conditions.

## 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 20170410002289A](https://openairdocs.org/incident/20170410002289A), Apr 10, 2017: Weatherly Aviation Co Inc 620B (N9004M), Lewistown, MT, Substantial damage. On April 10, 2017, at 1700 MDT, a Weatherly 620B, N9004M, registered to Skyline aviation LLC, collided with the ground at Lewistown Airport, Lewistown,…

## Other aircraft with N9004M

- [Cancelled 1971-02-11](https://openairdocs.org/deregistered/N9004M-1971-02-11): Cessna 180H, S/N 18052104. Exported to Canada. Owner: [Cessna Aircraft Co](https://openairdocs.org/faa-owner/CESSNA%20AIRCRAFT%20CO)

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