NORTHWEST HELICOPTERS, LLC
Also recorded as: NORTHWEST HELICOPTERS LLC, NORTHWEST HELICOPTERS, LLC
Accident & enforcement record
Events that happened, regardless of the operator's own reporting. Each links to its public source.
NTSB accidents & incidents
Operated by NORTHWEST HELICOPTERS LLC (per NTSB report)
The pilot's failure to maintain main rotor clearance from a fiber line while picking up a lineman.
Operated by NORTHWEST HELICOPTERS LLC (per NTSB report)
The fatigue failure of the engine-to-transmission driveshaft adapter attachment bolt due to the application of inadequate torque on the bolt during assembly.
Operated by Northwest Helicopters (per NTSB report)
The pilot's failure to maintain clearance between his external load and trees while maneuvering. Contributing to the accident were hilly terrain and trees.
Operated by NORTHWEST HELICOPTERS, INC. (per NTSB report)
A failure of the external load cable, which became entangled in the tail rotor.
Operated by NORTHWEST HELICOPTERS (per NTSB report)
Fuel exhaustion due to the pilot's failure to refuel.
Operated by NORTHWEST HELICOPTERS INC. (per NTSB report)
A LEAK IN THE FUEL FILLER CAP AND WATER IN THE FUEL SYSTEM. A FACTOR TO THE ACCIDENT WAS: INADEQUATE PREFLIGHT.
Operated by NORTHWEST HELICOPTERS, INC. (per NTSB report)
TOTAL FAILURE OF THE INTERMEDIATE GEARBOX. THE LACK OF SUITABLE TERRAIN FOR AN AUTOROTATION WAS A FACTOR.
Operated by NORTHWEST HELICOPTERS, INC (per NTSB report)
FAILURE OF A SECOND STAGE TURBINE WHEEL TOO LOW FOR A SUCCESSFUL AUTOROTATION. FACTORS INCLUDE A TREE IN THE APPROACH PATH.
Operated by NORTHWEST HELICOPTERS, INC. (per NTSB report)
THE FAILURE OF THE MAIN ROTOR DRIVE SHAFT DUE TO THE IMPROPER INSTALLATION BY COMPANY MAINTENANCE PERSONNEL OF AN 'O' RING SEAL, WHICH ALLOWED THE PACKING GREASE TO ESCAPE AND CAUSED THE OVER TEMPERATURE FAILURE OF THE DRIVE SHAFT. A FACTOR IN THE ACCIDENT WAS THE LACK OF SUITABLE TERRAIN IN WHICH TO PERFORM AN AUTOROTATION.
FAA enforcement actions
No FAA enforcement actions linked to this operator.
Maintenance disclosure history
Service Difficulty Reports are self-reported maintenance findings. The NUMBER of reports is not a measure of reliability — diligent operators file more, not fewer. These are shown for transparency, not as a negative signal. To verify a report, search its control number at the FAA SDRS site.
Reports span 1999–1999. Most-reported systems: Main rotor drive (63) — 1. Most-common natures of condition, as filed: FLUID LOSS — 1.
1 report on file.
Linked aircraft
| N-number | Make / model | Year | Status | Link basis |
|---|---|---|---|---|
| N166DR | BELL UH-1H | 1995 | Valid Registration | Operator named in NTSB report |
| N206CH | BELL 206B | 1975 | Valid Registration | Operator named in NTSB report |
| N576KA | BELL 206B | 1976 | Valid Registration | Matched by certificate designator |
| N70NW | — | — | Operator named in NTSB report | |
| N722LM | BELL 206-L4 | 1994 | Valid Registration | Matched by certificate designator |
| N80NW | — | — | Operator named in NTSB report | |
| N83NW | CESSNA 500 | 1976 | Valid Registration | Operator named in NTSB report |
| N88TA | BELL 206B | 1980 | Valid Registration | Matched by certificate designator |
| N89NW | HERMANN BJORN LANCAIR IV | 2005 | Valid Registration | Operator named in NTSB report |
| N900FF | MCDONNELL DOUGLAS HELI CO 369FF | 1994 | Valid Registration | Matched by certificate designatorOperator named in NTSB report |
| N91NW | — | — | Operator named in NTSB report | |
| N95NW | BOEING 747-8B5 | 2015 | Valid Registration | Operator named in NTSB report |
Aircraft with earlier records under this certificate
Maintenance and accident records on this page also cover aircraft that are not in this operator's current FAA fleet list. Charter and management fleets change — owners switch management companies, sell, or export aircraft. Where the registry shows what became of a tail, it is noted below.
- N166DR (BELL UH-1H) — records 2015 · registered to OAS2 LLC (owner ≠ operator)
- N206CH (BELL 206B) — records 2008 · registered to NORTHWEST HELICOPTERS I INC (owner ≠ operator)
- N83NW (CESSNA 500) — records 1998 · registered to BAS PART SALES LLC (owner ≠ operator)
- N95NW (BOEING 747-8B5) — records 1997 · registered to SIERRA NEVADA COMPANY LLC (owner ≠ operator)
- N80NW — records 1994 · no longer on the FAA registry
- N91NW — records 1993 · no longer on the FAA registry
- N70NW — records 1993 · no longer on the FAA registry
- N89NW (HERMANN BJORN LANCAIR IV) — records 1992 · registered to COMMON CENTS HOLDING COMPANY LLC (owner ≠ operator)