# N6344U: Aero Commander 680FL, registration cancelled 1999-07-21

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: July 21, 1999
- Exported to: Chile
- Status when cancelled: Triennial form not returned
- Airframe: [Aero Commander 680FL](https://openairdocs.org/model/aero-commander-680fl) (registry code 0141608)
- Data sheets: [TCDS 2A4](https://openairdocs.org/tcds/2A4) (OpenAirDocs)
- Serial number: 1430-72
- Type of aircraft: Fixed wing multi engine
- Certificate issued: January 19, 1990
- Last registry action: June 30, 1999
- Mode S code: A84F8F
- Owner when cancelled: [Corporate Air](https://openairdocs.org/faa-owner/CORPORATE%20AIR)
- Location: [Billings, MT](https://openairdocs.org/faa-place/MT/Billings)
- Owner type: Corporation
- Owner's area on the map: 45.7833° N, 108.5007° W: Placed by OpenAirDocs: center of Billings, MT, within about 4 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N6344U
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=6344U
- Page: https://openairdocs.org/deregistered/N6344U-1999-07-21

From the FAA registry file of November 5, 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 Aero Commander 680FL: https://openairdocs.org/model/aero-commander-680fl.md

## Service difficulty reports (2)

Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model.

- [SDR 96ZZZX5202](https://openairdocs.org/sdr/96ZZZX5202), May 18, 1996: HOSE. SEPARATED. BIL - FLT 5011 - HYDRAULIC SYSTEM FAILURE DURING CRUISE FLIGHT FROM WOLF POINT TO BILLINGS. HYDRAULIC PUMP PRESSURE HOSE SEPARATED AT HOSE AND FITTING ON LEFT E
- [SDR 96ZZZX4612](https://openairdocs.org/sdr/96ZZZX4612), Apr 12, 1996: SCREW. SHORTED. BIL - FLT 5011 - PILOT REPORTED A 'FLASH' IN THE INSTRUMENT PANEL AND SMELLED WIRE INSULATION BURNED. BRASS SCREW BACKED OUT OF THE ENGINE TACHOMETER MOUNT AND 

## FAA accident and incident reports (2)

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.

- [Incident 19871006067709I](https://openairdocs.org/incident/19871006067709I), Oct 6, 1987: Gulstm 680FL (N6344U), Billings, MT. Electrical fluctuations on right alternator during takeoff. Returned and cleaned alternator terminals.
- [Incident 19790610014859I](https://openairdocs.org/incident/19790610014859I), Jun 10, 1979: Rkwell 680FL (N6344U), Denver, CO. Oil pressure dropped when right engine turbocharger was engaged, flight returned. Condition never duplicated.

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