- Date
- September 12, 1969
- Place
- Circle, MT · CIRCLE, MT
- Injuries
- 2 uninjured
- Damage
- Substantial damage
- Phase of flight
- Enroute
- Aircraft
- N6787DBell 47G-3
- Status
- Completed · report May 18, 1970
- Report
- Brief approved by the director
- Case key
- 152560
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 ---------------------------------------------------------------------------------------------------------------------------- 3-4196 69/9/12 CIRCLE,MONT BELL 47G-3 CR- 0 0 1 COMMERCIAL COMMERCIAL, FL.INSTR., TIME - 1400 N6787D PX- 0 0 1 POWER/PIPELINE AGE 44, 3290 TOTAL HOURS, DAMAGE-SUBSTANTIAL OT- 0 0 0 90 IN TYPE, NOT INSTRUMENT RATED. DEPARTURE POINT INTENDED DESTINATION CIRCLE,MONT CIRCLE,MONT TYPE OF ACCIDENT PHASE OF OPERATION PROPELLER/ROTOR FAILURE: TAIL ROTOR IN FLIGHT: NORMAL CRUISE HARD LANDING LANDING: ROLL-ON/RUN-ON PROBABLE CAUSE(S) ROTORCRAFT - TRANSMISSION ROTOR DRIVE SYSTEM: TAIL ROTOR DRIVE SHAFT ASSEMBLY MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE PILOT IN COMMAND - IMPROPER OPERATION OF FLIGHT CONTROLS EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND REMARKS- AFT SHAFT SECTION FAILED.
Aircraft
- Registration
- N6787D
- Reported as
- Bell 47G-3
- Category
- Helicopter
- Engine
- reciprocating
- Damage
- Substantial damage
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.
Other investigations on N6787D · 2
Matched to the same aircraft by N-number and date.