- Date
- August 8, 1972
- Place
- Greybull, WY · GREYBULL, WY
- Injuries
- 1 serious
- Damage
- Substantial damage
- Phase of flight
- Enroute
- Aircraft
- N6874Alouette III
- Status
- Completed · report January 23, 1973
- Report
- Brief approved by the director
- Case key
- 167633
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 ---------------------------------------------------------------------------------------------------------------------------- 3-1246 72/8/8 GREYBULL,WYO ALOUETTE III CR- 0 1 0 MISCELLANEOUS COMMERCIAL, FL.INSTR., TIME - 1130 N6874 PX- 0 0 0 FERRY AGE 45, 9932 TOTAL HOURS, DAMAGE-SUBSTANTIAL OT- 0 0 0 65 IN TYPE, NOT INSTRUMENT RATED. DEPARTURE POINT INTENDED DESTINATION CODY,WYO GREYBULL,WYO TYPE OF ACCIDENT PHASE OF OPERATION MISCELLANEOUS IN FLIGHT: NORMAL CRUISE COLLISION WITH GROUND/WATER: UNCONTROLLED IN FLIGHT: UNCONTROLLED DESCENT PROBABLE CAUSE(S) ROTORCRAFT - TRANSMISSION ROTOR DRIVE SYSTEM: ENGINE DRIVE SHAFT MISCELLANEOUS ACTS,CONDITIONS - FATIGUE FRACTURE PERSONNEL - PRODUCTION-DESIGN-PERSONNEL: SUBSTANDARD QUALITY CONTROL FACTOR(S) MISCELLANEOUS ACTS,CONDITIONS - SEPARATION IN FLIGHT EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND SUSPECTED MECHANICAL DISCREPANCY PITCH CONTROL PROBLEM REMARKS- MAIN DRIVE SHAFT FAILED DUE TO FAULTY MACHINING.SHAFT SEPARATED,WENT THRU ROTOR HEAD ASSY.
Aircraft
- Registration
- N6874
- Reported as
- Alouette III
- Category
- Helicopter
- Engine
- turbo shaft
- Damage
- Substantial damage
N6874Registration cancelled Feb 7, 1989 · Aerospatiale SE3160 ALOUETTE IIIAirframe modelAerospatiale SE3160 ALOUETTE III
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.