- Date
- July 27, 1984, 17:20 local (23:20 UTC)
- Place
- Havre, MT
- Injuries
- 7 uninjured
- Damage
- Substantial damage
- Phase of flight
- Enroute
- Aircraft
- CGONGCessna 310Q
- Weather
- Visual (VMC) · Day
- Status
- Completed
- Report
- Approved by Office Director
- Case key
- 16447
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.
On this page
Sequence of events
NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.
Loss of engine power(partial) - mech failure/malf
Lubricating system,oil seal - failure,partialCause
Fluid,oil - leakCause
Propeller feathering - performed
Forced landing
On ground/water encounter with terrain/water
Terrain condition - rough/uneven
Analysis
During cruise flight with five adults and two infants on board, the pilot noted left engine oil pressure decreasing and a visible oil leak. Engine shutdown and propeller feather were accomplished but altitude could not be maintained. A forced landing was performed in an open field. An 'o' ring failure was found on the left engine.
Aircraft
- Registration
- CGONG
- Reported as
- Cessna 310Q
- Category
- Airplane
- Serial number
- 1048
- Airframe hours
- 1,158
- Engine
- Continental IO-470-VO, 260 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Personal · Part 91
- Registered owner
- Harold J. Lewis
- Airworthiness certificate
- Standard, Normal
- Last inspection
- Unknown · May 30, 1984 · 17 hours before
- Departed
- Pincher Creek
- Destination
- MDT · Minot, SD
- Flight plan
- VFR
Flight crew
As NTSB recorded them. NTSB leaves out names.
- Role
- Pilot
- Age
- 46
- Certificate
- Private
- Airplane ratings
- Single-engine land, Multi-engine land
- Medical
- Class 3, Valid Medical--w/ waivers/lim
- Seat
- Left
- Flight hours
- 748 total · 400 in this make and model · 27 in the last 90 days
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 100° at 15 knots
- Visibility
- 25 statute miles
- Lowest ceiling
- None
- Temperature
- 81 °F