- Date
- April 4, 1966
- Place
- Billings, OK · BILLINGS, OK
- Injuries
- 1 uninjured
- Damage
- Substantial damage
- Phase of flight
- Initial climb
- Aircraft
- N939BBell 47G-2
- Status
- Completed · report June 2, 1966
- Report
- Brief approved by the director
- Case key
- 172930
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 ---------------------------------------------------------------------------------------------------------------------------- 2-0057 66/4/4 BILLINGS OKLA BELL 47G-2 CR- 0 0 1 COMMERCIAL COMMERCIAL, AGE 31, 2600 TIME - 1845 N939B PX- 0 0 0 ASSOC CROP CTL ACTIVITY TOTAL HOURS, 400 IN TYPE, DAMAGE-SUBSTANTIAL OT- 0 0 0 NOT INSTRUMENT RATED. NAME OF AIRPORT - CARTER AIRSTRIP TYPE OF ACCIDENT PHASE OF OPERATION ENGINE FAILURE OR MALFUNCTION TAKEOFF: INITIAL CLIMB HARD LANDING LANDING: POWER-OFF AUTOROTATIVE LANDING PROBABLE CAUSE(S) PILOT IN COMMAND - IMPROPER OPERATION OF POWERPLANT & POWERPLANT CONTROLS FACTOR(S) ROTORCRAFT - TRANSMISSION ROTOR DRIVE SYSTEM: CLUTCH ASSEMBLY MISCELLANEOUS ACTS,CONDITIONS - OVERLOAD FAILURE EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND SPECIAL DATA TOTAL HOURS IN CROP CONTROL - 20 KIND OF OPERATION - SPRAYING CROPS KIND OF CROP - GRAIN FIELDS TYPE OF CHEMICAL USED - LIQUID CHEMICAL-TOXIC PILOT' S SEAT BELT -FASTENED-PROPERLY GLOVES - NOT USED GOGGLES - NOT USED CRASH HELMET - AVAILABLE USED COCKPIT CRASHPAD - NOT INSTALLED CRASH BAR - NOT INSTALLED TANK/HOPPER-LOCATION - SIDES TERRAIN-TYPE -LEVEL,FLAT REMARKS- CENTRIFUGAL CLUTCH SLIPPAGE
Aircraft
- Registration
- N939B
- Reported as
- Bell 47G-2
- Category
- Helicopter
- Engine
- reciprocating
- Damage
- Substantial damage
- Airport
- Carter Airstrip
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 N939B · 3
Matched to the same aircraft by N-number and date.