- Date
- November 9, 2024, 11:04 local (16:04 UTC)
- Place
- Alcoa, TN · Off runway
- Injuries
- 1 uninjured
- Damage
- Substantial damage
- Phase of flight
- Taxi
- Aircraft
- N143MGCessna 310K
- Defining event
- Taxi-from runway: Loss of control on ground
- Weather
- Visual (VMC) · Day
- Status
- Completed
- Report
- Approved by Office Director
- Investigation class
- Class 4 - Basic report with no Prelim publish
- NTSB office
- Eastern Region Aviation
- Parties
- FAA/FSDO
- FAA report
- 20241109017389A
- Case key
- 195478
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 failure of the left engine throttle control shaft bushing during taxi, resulting in a full asymmetric power condition and a taxiway excursion.
Findings · 1
NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.
Sequence of events
The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.
Analysis
The pilot reported that his approach and landing were normal. After exiting the runway, while on a taxiway, the airplane “swerved to the right and seemed to accelerate.” Unable to control braking and steering, the airplane departed the taxiway to the right and proceeded through a steep depression before colliding with a wind sensor pole. The pilot secured the airplane and was met by first responders. The airplane’s right wing and fuselage were substantially damaged during the accident sequence. Postaccident examination of the airplane revealed that the brass splined bushing on the left engine throttle control shaft was stripped, which resulted in an uncontrollable, full power application to that engine. The wheel brakes were examined and no anomalies were found; the brakes held the airplane in place with the left engine at full power during a test run.
Aircraft
- Registration
- N143MG
- Reported as
- Cessna 310K
- Category
- Airplane
- Serial number
- 310K0134
- Built
- 1965
- Airframe hours
- 4,588
- Engines
- Cont Motor IO-470-VO(9), 260 horsepower, reciprocatingCont Motor IO-470-VO(8), 260 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Business · Part 91
- Airworthiness certificate
- Standard, Normal
- Last inspection
- Annual · May 2, 2024
- Departed
- H10 · St Louis, MO
- Destination
- Same as departure
- Flight plan
- IFR
- Airport
- TYS · McGhee Tyson Airport, runway 5L, 10,000 × 150 ft, concrete
- Equipment
- Auto-pilot, Stall warning system, ADS-B
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
- 79
- Injuries
- None
- Certificates
- Flight instructor, Airline transport, Commercial, Private
- Airplane ratings
- Single-engine land, Multi-engine land
- Instrument ratings
- Airplane
- Medical
- Class 2, With waivers/limitations
- Last flight review
- February 15, 2024
- Seat
- Left
- Restraint
- Lap only
- Flight hours
- 18,400 total · 4,000 in this make and model · 16,000 as pilot in command
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 50° at 6 knots
- Visibility
- 10 statute miles
- Lowest ceiling
- None
- Temperature
- 64 °F, dew point 50 °F
- Altimeter
- 30.18 inHg
- Observed at
- TYS, 1 nm away
- METAR
- KTYS 091553Z 05006KT 10SM CLR 18/10 A3018 RMK AO2 SLP216 T01830094 $
Docket · 5
The files NTSB released with the investigation on April 22, 2025, on NTSB’s docket system: statements, records, photos and specialists’ reports. 19.9 MB in all.
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.