- Date
- December 8, 1970
- Place
- Fullerton, CA · FULLERTON, CA
- Injuries
- 1 uninjured
- Damage
- Substantial damage
- Phase of flight
- Enroute
- Aircraft
- N86690Hiller Acft UH12L4
- Status
- Completed · report October 5, 1971
- Report
- Brief approved by the director
- Case key
- 159576
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 ---------------------------------------------------------------------------------------------------------------------------- 3-4488 70/12/8 FULLERTON,CALIF HILLER ACFT UH12L4 CR- 0 0 1 NONCOMMERCIAL COMMERCIAL, AGE 26, 2489 TIME - 0856 N86690 PX- 0 0 0 CORP/EXEC TOTAL HOURS, 277 IN TYPE, DAMAGE-SUBSTANTIAL OT- 0 0 0 INSTRUMENT RATED. NAME OF AIRPORT - FULLERTON DEPARTURE POINT INTENDED DESTINATION FULLERTON,CALIF VICTORVILLE,CALIF 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 - LUBRICATING SYSTEM: VALVES MISCELLANEOUS ACTS,CONDITIONS - IMPROPERLY SECURED MISCELLANEOUS ACTS,CONDITIONS - OIL EXHAUSTION-ENGINE LUBRICATION SYSTEM MISCELLANEOUS ACTS,CONDITIONS - OIL STARVATION PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: IMPROPERLY SERVICED AIRCRAFT (GROUND CREW) COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND REMARKS- DRAIN VALVE LEFT OPEN DURING OIL CHNG. NOT VISIBLE ON PRE-FLT.OIL NOT PUMPED OVBD TIL ENG RUNNING.
Aircraft
- Registration
- N86690
- Reported as
- Hiller Acft UH12L4
- Category
- Helicopter
- Engine
- reciprocating
- Damage
- Substantial damage
- Airport
- Fullerton
N86690Registration cancelled Feb 8, 2025 · Hiller UH-12L4Airframe modelHiller UH-12L4Engine modelAmateur-built UNKNOWN ENG
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.