- Date
- September 21, 1966
- Place
- W.Yellowston, MT · W.YELLOWSTON, MT
- Injuries
- 2 fatal, 1 serious
- Damage
- Destroyed
- Phase of flight
- Enroute
- Aircraft
- N1169WBell 47G3B1
- Status
- Completed · report June 14, 1967
- Report
- Brief approved by the director
- Case key
- 120987
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 ---------------------------------------------------------------------------------------------------------------------------- 2-1105 66/9/21 NR.W.YELLOWSTON MONT BELL 47G3B1 CR- 1 0 0 COMMERCIAL COMMERCIAL, AGE 43, 4983 TIME - 1245 N1169W PX- 1 1 0 CTR PASSG-D TOTAL HOURS, 3452 IN DAMAGE-DESTROYED OT- 0 0 0 TYPE, NOT INSTRUMENT RATED. TYPE OF ACCIDENT PHASE OF OPERATION COLLISION WITH GROUND/WATER: CONTROLLED IN FLIGHT: POWER-ON DESCENT PROBABLE CAUSE(S) PILOT IN COMMAND - MISJUDGED SPEED AND ALTITUDE PILOT IN COMMAND - FAILED TO OBTAIN/MAINTAIN FLYING SPEED PILOT IN COMMAND - FAILED TO MAINTAIN ADEQUATE ROTOR R.P.M. PILOT IN COMMAND - IMPROPER OPERATION OF POWERPLANT & POWERPLANT CONTROLS PILOT IN COMMAND - IMPROPER OPERATION OF FLIGHT CONTROLS WEATHER - HIGH DENSITY ALTITUDE MISSING AIRCRAFT - LATER RECOVERED 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 68 WIND VELOCITY-KNOTS TYPE OF WEATHER CONDITIONS 15 VFR TYPE OF FLIGHT PLAN NONE FIRE AFTER IMPACT REMARKS- RECOVERY DATE 9/22/66.AFTER LOSING LIFT AT LOW ALT PLT TURNED TO LEFT DOWNSLOPE.NEAR MAX GROSS WT.
Aircraft
- Registration
- N1169W
- Reported as
- Bell 47G3B1
- Category
- Helicopter
- Engine
- reciprocating
- Damage
- Destroyed
N1169WRegistered now · Bell 47G-3B-1Airframe modelBell 47G-3B-1Engine 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.
Other investigations on N1169W · 2
Matched to the same aircraft by N-number and date.