- Date
- August 27, 1989, 16:15 local (22:15 UTC)
- Place
- Tremonton, UT
- Injuries
- 1 serious
- Damage
- Destroyed
- Phase of flight
- Maneuvering
- Aircraft
- N4129FCessna 172
- Weather
- Visual (VMC) · Day
- Status
- Completed · report July 9, 1990
- Report
- Approved by Office Director
- FAA report
- 19890827031769A
- Case key
- 17604
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.
On this page
Probable cause
The pilot failed to maintain obstruction clearance while making a low pass over a newly constructed highway. The powerline was considered a contributing factor.
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 was making a low pass over a newly constructed interstate highway, when the airplane struck an unmarked power line. After hitting the power line, a large portion of the vertical stabilizer and rudder separated from the airplane. The airplane then crashed in an open field approximately 1500 feet beyond the power line.
Aircraft
- Registration
- N4129F
- Reported as
- Cessna 172
- Category
- Airplane
- Serial number
- 46029
- Airframe hours
- 4,488
- Engine
- Lycoming O-300-A, 145 horsepower, reciprocating
- Damage
- Destroyed
- Flight
- Personal · Part 91
- Registered owner
- Pleasure Air, Inc.
- Airworthiness certificate
- Standard, Normal
- Last inspection
- Annual · June 9, 1989 · 125 hours before
- Departed
- U27 · Tremonton, UT
- Destination
- U27
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
- 36
- Certificate
- Private
- Airplane ratings
- Single-engine land
- Medical
- Class 3, Valid Medical--no waivers/lim.
- Seat
- Left
- Flight hours
- 170 total · 40 in this make and model · 121 as pilot in command · 23 in the last 90 days · 1 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 170° at 5 knots
- Visibility
- 50 statute miles
- Lowest ceiling
- None
- Temperature
- 81 °F
- Altimeter
- 30.00 inHg
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.