- Date
- April 28, 1982, 10:00 local (17:00 UTC)
- Place
- Vermal, UT
- Injuries
- 3 serious
- Damage
- Substantial damage
- Phase of flight
- Approach
- Aircraft
- N48217Bell 47G-3B-1
- Weather
- Visual (VMC) · Day
- Status
- Completed · report April 28, 1983
- Report
- Approved by Office Director
- FAA report
- 19820428012369A
- Case key
- 72922
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
The pilot stated that he experienced a partial loss of engine power during landing at an elevation of about 5280 ft MSL. The temperature was about 50 degrees fahrenheit. He applied full throttle, but the RPM decayed and the plane crash landed. A partial engine teardown revealed that the grounding wire on the right magneto was disconnected. On this magneto, a bendix S-200, the disconnected wire would cause the magneto to ground out and cease functioning. With one magneto grounded, there would be a loss of about 200 RPM.
Aircraft
- Registration
- N48217
- Reported as
- Bell 47G-3B-1
- Category
- Helicopter
- Serial number
- 2760
- Airframe hours
- 6,044
- Engine
- Lycoming TVO-435, 200 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Part 137
- Operator
- Intermountain Survey
- Registered owner
- Intermountain Survey
- Departed
- SLC · Vermal, UT
- Destination
- SLC · Vermal, UT
- Airport
- SLC · Vermal
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
- 41
- Certificates
- Airline transport, Commercial
- Airplane ratings
- Single-engine land
- Instrument ratings
- Airplane
- Medical
- Class 2, Valid Medical--no waivers/lim.
- Flight hours
- 4,983 total · 4 in this make and model · 22 in the last 90 days · 4 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Visibility
- 50 statute miles
- Temperature
- 122 °F
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.