- Date
- November 3, 1977
- Place
- Depoe Bay, OR · DEPOE BAY, OR
- Injuries
- 1 serious
- Damage
- Substantial damage
- Phase of flight
- Maneuvering
- Aircraft
- N9786CHiller Acft UH-12E
- Status
- Completed · report January 31, 1978
- Report
- Brief approved by the director
- Case key
- 144187
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 ---------------------------------------------------------------------------------------------------------------------------- 3-3885 77/11/3 DEPOE BAY,OR HILLER ACFT UH-12E CR- 0 1 0 COMMERCIAL COMMERCIAL, FL.INSTR., TIME - 1000 N9786C PX- 0 0 0 ASSOC CROP CTL ACTIVITY AGE 48, 11353 TOTAL DAMAGE-SUBSTANTIAL OT- 0 0 0 HOURS, 4235 IN TYPE, INSTRUMENT RATED. DEPARTURE POINT INTENDED DESTINATION DEPOE BAY,OR LOCAL TYPE OF ACCIDENT PHASE OF OPERATION PROPELLER/ROTOR FAILURE: TAIL ROTOR IN FLIGHT: RETURN TO STRIP COLLIDED WITH: TREES IN FLIGHT: AUTOROTATIVE DESCENT PROBABLE CAUSE(S) PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: IMPROPER MAINTENANCE (MAINTENANCE PERSONNEL) ROTORCRAFT - TRANSMISSION ROTOR DRIVE SYSTEM: TAIL ROTOR GEAR BOX MISCELLANEOUS ACTS,CONDITIONS - IMPROPERLY INSTALLED TERRAIN - HIGH OBSTRUCTIONS EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND SPECIAL DATA TOTAL HOURS IN CROP CONTROL - 4235 KIND OF OPERATION - FERTILIZING (DUST) KIND OF CROP - FOREST-TREES TYPE OF CHEMICAL USED - DRY CHEMICAL-NONTOXIC PILOT' S SEAT BELT -FASTENED-PROPERLY GLOVES - USED GOGGLES - NOT USED CRASH HELMET - AVAILABLE USED COCKPIT CRASHPAD - NOT INSTALLED CRASH BAR - NOT INSTALLED TANK/HOPPER-LOCATION - SIDES TERRAIN-TYPE -MOUNTAINOUS ELEVATION-AREA BEING TREATED-FEET - 850 REMARKS- T/R GEAR BOX THRUST BRGS MISALIGNED,IMPROPERLY INSTALLED.INPUT CPLNG DISENGAGED FM T/R DRIVETRAIN.
Aircraft
- Registration
- N9786C
- Reported as
- Hiller Acft UH-12E
- Category
- Helicopter
- Engine
- reciprocating
- Damage
- Substantial damage
N9786CRegistration cancelled Apr 30, 2015 · Hiller UH-12EAirframe modelHiller UH-12EEngine modelLycoming VO-540 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 N9786C · 1
Matched to the same aircraft by N-number and date.