- Date
- June 21, 1968
- Place
- Crona D Mar, CA · CRONA D MAR, CA
- Injuries
- 2 uninjured
- Damage
- Substantial damage
- Phase of flight
- Emergency descent
- Aircraft
- N12512Bell 47D1
- Status
- Completed · report August 8, 1968
- Report
- Brief approved by the director
- Case key
- 109726
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.
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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 ---------------------------------------------------------------------------------------------------------------------------- 3-1851 68/6/21 CRONA D MAR,CALIF BELL 47D1 CR- 0 0 2 INSTRUCTIONAL COMMERCIAL, FL.INSTR., TIME - 1000 N12512 PX- 0 0 0 DUAL AGE 35, 1160 TOTAL HOURS, DAMAGE-SUBSTANTIAL OT- 0 0 0 ALL IN TYPE, NOT INSTRUMENT RATED. NAME OF AIRPORT - ORANGE COUNTY TYPE OF ACCIDENT PHASE OF OPERATION PROPELLER/ROTOR FAILURE: TAIL ROTOR IN FLIGHT: AUTOROTATIVE DESCENT PROBABLE CAUSE(S) MISCELLANEOUS ACTS,CONDITIONS - SIMULATED CONDITIONS ROTORCFT-TAIL ROTOR GRIP RETAINING BOLT. MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE ROTORCRAFT - ROTOR ASSEMBLIES: TAIL ROTOR BLADES FACTOR(S) MISCELLANEOUS ACTS,CONDITIONS - SEPARATION IN FLIGHT MISCELLANEOUS ACTS,CONDITIONS - OUT OF BALANCE MISCELLANEOUS ACTS,CONDITIONS - OVERLOAD FAILURE EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND DIRECTIONAL CONTROL PROBLEM PROP/ENGINE VIBRATION REMARKS- TAIL ROTOR TRANSMISSION ALSO SEPARATED.
Aircraft
- Registration
- N12512
- Reported as
- Bell 47D1
- Category
- Helicopter
- Engine
- reciprocating
- Damage
- Substantial damage
- Airport
- Orange County
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 N12512 · 3
Matched to the same aircraft by N-number and date.