- Date
- August 6, 1970
- Place
- Manson, WA · MANSON, WA
- Injuries
- 1 uninjured
- Damage
- Substantial damage
- Phase of flight
- Uncontrolled descent
- Aircraft
- N1657Bell 47G-2
- Status
- Completed · report June 16, 1971
- Report
- Brief approved by the director
- Case key
- 191253
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 ---------------------------------------------------------------------------------------------------------------------------- 3-3425 70/8/6 MANSON,WASH BELL 47G-2 CR- 0 0 1 COMMERCIAL COMMERCIAL, FL.INSTR., TIME - 0845 N1657 PX- 0 0 0 AERIAL APPLICATION AGE 33, 2365 TOTAL HOURS, DAMAGE-SUBSTANTIAL OT- 0 0 0 828 IN TYPE, NOT INSTRUMENT RATED. DEPARTURE POINT INTENDED DESTINATION MANSON,WASH LOCAL TYPE OF ACCIDENT PHASE OF OPERATION COLLIDED WITH: TREES IN FLIGHT: UNCONTROLLED DESCENT PROBABLE CAUSE(S) PILOT IN COMMAND - IMPROPER OPERATION OF POWERPLANT & POWERPLANT CONTROLS PILOT IN COMMAND - IMPROPER OPERATION OF FLIGHT CONTROLS PILOT IN COMMAND - FAILED TO MAINTAIN ADEQUATE ROTOR R.P.M. FACTOR(S) WEATHER - HIGH DENSITY ALTITUDE TERRAIN - HIGH OBSTRUCTIONS WEATHER BRIEFING - NO RECORD OF BRIEFING RECEIVED WEATHER FORECAST - UNKNOWN/NOT REPORTED 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 65 TYPE OF WEATHER CONDITIONS TYPE OF FLIGHT PLAN VFR NONE SPECIAL DATA TOTAL HOURS IN CROP CONTROL - 1800 KIND OF OPERATION - SEEDING FORESTS KIND OF CROP - FOREST-TREES TYPE OF CHEMICAL USED - DRY CHEMICAL-NONTOXIC PILOT' S SEAT BELT -UNKNOWN/NOT REPORTED GLOVES - NOT 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 - 6000 DENSE WITH TREES REMARKS- AFT FLT DOWNSLOPE,LOST CTL AT LO ALT OVR TREES DURG R TURN TO FOLLOW FIRE BREAK.DNS ALT ABT 7500FT
Aircraft
- Registration
- N1657
- Reported as
- Bell 47G-2
- Category
- Helicopter
- Engine
- reciprocating
- Damage
- Substantial damage