- Date
- July 9, 1975
- Place
- Elliston, MT · ELLISTON, MT
- Injuries
- 1 uninjured
- Damage
- Substantial damage
- Phase of flight
- Enroute
- Aircraft
- N1170WBell 47G3B1
- Status
- Completed · report October 9, 1975
- Report
- Brief approved by the director
- FAA report
- 19750709018089A
- Case key
- 150031
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.
On this page
NTSB brief
NTSB’s brief of the accident, as it was printed: the coded facts, with the probable cause and factors.
---------------------------------------------------------------------------------------------------------------------------- FILE DATE LOCATION AIRCRAFT DATA INJURIES FLIGHT PILOT DATA F S M/N PURPOSE ---------------------------------------------------------------------------------------------------------------------------- 3-2605 75/7/9 NR.ELLISTON,MT BELL 47G3B1 CR- 0 0 1 COMMERCIAL COMMERCIAL, AGE 30, 2313 TIME - 0845 N1170W PX- 0 0 0 MAPPING/PHOTO TOTAL HOURS, 460 IN TYPE, DAMAGE-SUBSTANTIAL OT- 0 0 0 NOT INSTRUMENT RATED. DEPARTURE POINT INTENDED DESTINATION HELENA,MT FLINT CRK MTN RANGE TYPE OF ACCIDENT PHASE OF OPERATION ENGINE FAILURE OR MALFUNCTION IN FLIGHT: NORMAL CRUISE HARD LANDING LANDING: POWER-OFF AUTOROTATIVE LANDING PROBABLE CAUSE(S) POWERPLANT - IGNITION SYSTEM: MAGNETOS POWERPLANT - IGNITION SYSTEM: HIGH TENSION WIRING MISCELLANEOUS - EVASIVE MANEUVER TO AVOID COLLISION PILOT IN COMMAND - FAILED TO MAINTAIN ADEQUATE ROTOR R.P.M. FACTOR(S) TERRAIN - HIGH OBSTRUCTIONS MISCELLANEOUS ACTS,CONDITIONS - PILOT FATIGUE PARTIAL POWER LOSS - PARTIAL LOSS OF POWER - 1 ENGINE EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND REMARKS- ROUGH RUNNING ENG.EXTENDED FLARE TO CLR FENCE.CRACKED DIST BLK L MAG,DMGD HI TENSION LD RECEPTACLE
Aircraft
- Registration
- N1170W
- Reported as
- Bell 47G3B1
- Category
- Helicopter
- Engine
- reciprocating
- Damage
- Substantial damage
N1170WRegistration cancelled Aug 12, 2021 · Bell 47G-3B-1Airframe modelBell 47G-3B-1Engine modelAllison 250 series
Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.
Other investigations on N1170W · 3
Matched to the same aircraft by N-number and date.