- Date
- October 12, 1966
- Place
- Tonasket, WA · TONASKET, WA
- Injuries
- 2 uninjured
- Damage
- Substantial damage
- Phase of flight
- Takeoff
- Aircraft
- N979BBell 47G
- Status
- Completed · report May 23, 1967
- Report
- Brief approved by the director
- Case key
- 120976
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 ---------------------------------------------------------------------------------------------------------------------------- 2-1029 66/10/12 TONASKET WASH BELL 47G CR- 0 0 1 MISCELLANEOUS COMMERCIAL, AGE 51, 14000 TIME - 0730 N979B PX- 0 0 1 FERRY TOTAL HOURS, 565 IN TYPE, DAMAGE-SUBSTANTIAL OT- 0 0 0 NOT INSTRUMENT RATED. NAME OF AIRPORT - TONASKET TYPE OF ACCIDENT PHASE OF OPERATION PROPELLER/ROTOR FAILURE: TAIL ROTOR TAKEOFF: VERTICAL PROBABLE CAUSE(S) ROTORCRAFT - ROTOR ASSEMBLIES: OTHER MISCELLANEOUS ACTS,CONDITIONS - FATIGUE FRACTURE FACTOR(S) MISCELLANEOUS ACTS,CONDITIONS - SEPARATION IN FLIGHT EMERGENCY CIRCUMSTANCES - FORCED LANDING ON AIRPORT/SEAPLANE BASE/HELIPT. DIRECTIONAL CONTROL PROBLEM REMARKS- T/R HUB ASSY BOLT P/N 47-641-052-3 FAILED-T/R BLADE SEPARATED FROM ASSY.LANDED W/O FURTHER DAMAGE.
Aircraft
- Registration
- N979B
- Reported as
- Bell 47G
- Category
- Helicopter
- Engine
- reciprocating
- Damage
- Substantial damage
- Airport
- Tonasket
N979BRegistration cancelled Jan 9, 2006 · Bell 47GAirframe modelBell 47GEngine modelFranklin 6VS-335 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.
Other investigations on N979B · 3
Matched to the same aircraft by N-number and date.