- Date
- June 17, 1966
- Place
- Lincoln, MT · LINCOLN, MT
- Injuries
- 3 uninjured
- Damage
- Substantial damage
- Phase of flight
- Initial climb
- Aircraft
- N8505FBell 47G3B1
- Status
- Completed · report March 1, 1967
- Report
- Brief approved by the director
- Case key
- 171106
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 ---------------------------------------------------------------------------------------------------------------------------- 2-0577 66/6/17 NR.LINCOLN MONT BELL 47G3B1 CR- 0 0 1 COMMERCIAL COMMERCIAL, AGE 35, 5250 TIME - 1630 N8505F PX- 0 0 2 CTR PASSG-D TOTAL HOURS, 850 IN TYPE, DAMAGE-SUBSTANTIAL OT- 0 0 0 NOT INSTRUMENT RATED. NAME OF AIRPORT - MEADOW CREEK MINE TYPE OF ACCIDENT PHASE OF OPERATION ENGINE FAILURE OR MALFUNCTION TAKEOFF: INITIAL CLIMB COLLIDED WITH: TREES LANDING: POWER-ON LANDING PROBABLE CAUSE(S) POWERPLANT - EXHAUST SYSTEM: CLAMPS POWERPLANT - EXHAUST SYSTEM: EXTERNAL SUPERCHARGER PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: INADEQUATE MAINTENANCE AND INSPECTION FACTOR(S) WEATHER - HIGH DENSITY ALTITUDE PARTIAL POWER LOSS - PARTIAL LOSS OF POWER - 1 ENGINE EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND 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 70 WIND VELOCITY-KNOTS TYPE OF WEATHER CONDITIONS CALM VFR TYPE OF FLIGHT PLAN NONE REMARKS- DENSITY ALTITUDE-8586 FT. EXCESSIVE LEAKING OF EXHAUST GASES REDUCED TURBOCHARGER EFFICIENCY.
Aircraft
- Registration
- N8505F
- Reported as
- Bell 47G3B1
- Category
- Helicopter
- Engine
- reciprocating
- Damage
- Substantial damage
- Airport
- Meadow Creek Mine