- Date
- March 5, 1985, 21:30 local (Mar 6, 1985, 03:30 UTC)
- Place
- Nampa, ID
- Injuries
- 1 uninjured
- Damage
- Substantial damage
- Phase of flight
- Maneuvering
- Aircraft
- N6812FCessna 150F
- Weather
- Visual (VMC) · Night/dark
- Status
- Completed
- Report
- Approved by Office Director
- FAA report
- 19850305005999A
- Case key
- 40122
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.
Analysis
While flying at ngt in the LCL practice area south of Nampa, the plt thought he had flown into IMC, but the wx was good. He was unable to see the ground, so he made a 180 deg turn, then noted problems seeing his instrument panel. Suspecting psbl carbon monoxide, he turned off the heat & opened the air vents, but he then experience tunnel vision & became lost & disoriented. He placed his head set near the mag compass which caused an erroneous reading. While seeking help from ATC, the plt set his hdg indcr (dgi) to agree with his mag compass. ATC tried to assist by giving a df steer & providingvectors during a climb to obtain radar contact. However, the acft impacted mountainous terrain at an alt of aprx 4800'. ATC had provided a correct steer twd the arpt, but the acft crashed while traveling away from the arpt. Rescue was delayed due to wx & the plt turning off the ELT for a time. ATC tapes verified normal conversation until the plt had sounds of physical impairment with hvy breathing, slow speech, & difficulty following ATC instructions; reason unknown.
Aircraft
- Registration
- N6812F
- Reported as
- Cessna 150F
- Category
- Airplane
- Serial number
- 15063412
- Airframe hours
- 4,100
- Engine
- Continental O-200-A, 100 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Personal · Part 91
- Registered owner
- Boyd W. Thompson
- Airworthiness certificate
- Standard, Normal; Standard, Utility
- Last inspection
- Annual · September 11, 1984 · 79 hours before
- Departed
- BOI · Boise, ID
- Destination
- BOI
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.
Flight crew
As NTSB recorded them. NTSB leaves out names.
- Role
- Pilot
- Age
- 59
- Certificate
- Private
- Airplane ratings
- Single-engine land
- Instrument ratings
- Airplane
- Medical
- Class 2, Valid Medical--no waivers/lim.
- Seat
- Left
- Flight hours
- 2,250 total · 52 in this make and model · 2,000 as pilot in command · 19 in the last 90 days · 2 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Night/dark
- Wind
- 150° at 10 knots
- Visibility
- 30 statute miles
- Lowest ceiling
- 20,000 ft overcast
- Temperature
- 39 °F, dew point 23 °F
- Altimeter
- 29.00 inHg
- Observed at
- BOI, 26 nm away
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.
Other investigations on N6812F · 1
Matched to the same aircraft by N-number and date.