- Date
- July 7, 1966
- Place
- Greybull, WY · GREYBULL, WY
- Injuries
- 1 minor, 1 uninjured
- Damage
- Substantial damage
- Phase of flight
- Initial climb
- Aircraft
- N9754CHiller UH12E
- Status
- Completed · report March 15, 1967
- Report
- Brief approved by the director
- Case key
- 171116
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 ---------------------------------------------------------------------------------------------------------------------------- 2-0587 66/7/7 NR.GREYBULL WYO HILLER UH12E CR- 0 0 1 COMMERCIAL COMMERCIAL, FL.INSTR., TIME - 1800 N9754C PX- 0 0 1 CTR PASSG-D AGE 27, 3060 TOTAL HOURS, DAMAGE-SUBSTANTIAL OT- 0 0 0 1000 IN TYPE, NOT INSTRUMENT RATED. TYPE OF ACCIDENT PHASE OF OPERATION STALL TAKEOFF: INITIAL CLIMB COLLISION WITH GROUND/WATER: CONTROLLED IN FLIGHT: POWER-ON DESCENT PROBABLE CAUSE(S) PILOT IN COMMAND - FAILED TO OBTAIN/MAINTAIN FLYING SPEED PILOT IN COMMAND - EXERCISED POOR JUDGMENT WEATHER - HIGH DENSITY ALTITUDE FACTOR(S) MISCELLANEOUS ACTS,CONDITIONS - DOWNWIND SKY CONDITION CEILING AT ACCIDENT SITE CLEAR UNLIMITED VISIBILITY AT ACCIDENT SITE PRECIPITATION AT ACCIDENT SITE 5 OR OVER(UNLIMITED) NONE OBSTRUCTIONS TO VISION AT ACCIDENT SITE TEMPERATURE-F NONE 60 WIND DIRECTION-DEGREES WIND VELOCITY-KNOTS 90 10 TYPE OF WEATHER CONDITIONS TYPE OF FLIGHT PLAN VFR NONE FIRE AFTER IMPACT REMARKS- DENSITY ALTITUDE 14000 FT.DID NOT OBTAIN TRANSLATIONAL LIFT.WIND 10 KTS GUSTY.NO FIRE DAMAGE.
Aircraft
- Registration
- N9754C
- Reported as
- Hiller UH12E
- Category
- Helicopter
- Engine
- reciprocating
- Damage
- Substantial damage
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 N9754C · 2
Matched to the same aircraft by N-number and date.