- Date
- June 17, 1989, 17:13 local (21:13 UTC)
- Place
- Knoxville, TN
- Injuries
- 1 minor
- Damage
- Substantial damage
- Phase of flight
- Takeoff
- Aircraft
- N714SRCessna 150M
- Weather
- Visual (VMC) · Day
- Status
- Completed · report July 11, 1990
- Report
- Approved by Office Director
- FAA report
- 19890617021909A
- Case key
- 8038
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's failure to recognize that the engine was not developing full power and the delay in performing remedial action until it was too late to stop the airplane on the runway.
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 student was making a practice solo flight to prepare for her private pilot certification test the following week. After an engine runup which resulted in an excessive mag drop on the first attempt, she attempted a takeoff on runway 26. She had used up about half of the 3,500 ft rwy before the airspeed indicator furnished a reading. The reading did not get above 40 mph during the takeoff run. The engine started running rough and she decided to abort the takeoff. The airplane veered left off the runway, 183 feet from the end. It continued over the grass surface and into the river/lake surrounding the airport. The skid marks from the application of the main wheel brakes began 215 feet from the end of the runway. The throttle was found in the closed position. The exhaust valve for the number four cylinder was found stuck in the open position. Inspection revealed the airplane was 10 hours past due of it's 100 hour inspection.
Aircraft
- Registration
- N714SR
- Reported as
- Cessna 150M
- Category
- Airplane
- Serial number
- 15079402
- Engine
- Continental O-200, 100 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Instructional · Part 91
- Operator
- L. J. Morse
- Registered owner
- Marty Bass
- Airworthiness certificate
- Standard, Utility
- Departed
- DKX
- Destination
- DKX
- Airport
- DKX · Downtown Island, runway 26, 3,500 × 75 ft, asphalt
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
- Certificate
- Student
- Medical
- Class 3, Valid Medical--no waivers/lim.
- Seat
- Left
- Flight hours
- 55 total · 20 in this make and model · 25 as pilot in command · 20 in the last 90 days · 13 in the last 30 days
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 220° at 8 knots
- Visibility
- 10 statute miles
- Lowest ceiling
- None
- Temperature
- 79 °F, dew point 57 °F
- Altimeter
- 30.00 inHg
- Observed at
- TYS, 10 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.