- Date
- December 22, 2020, 15:30 local (20:30 UTC)
- Place
- Madisonville, TN
- Injuries
- 3 uninjured
- Damage
- Substantial damage
- Phase of flight
- Landing
- Aircraft
- N4580CCessna 170
- Defining event
- Landing-landing roll: 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
- 20201222020389A
- Case key
- 102478
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 maintain directional control during the landing rollout, which resulted in a ground loop.
Findings · 2
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 was landing his tailwheel-equipped airplane. He reported that after touchdown the airplane veered to the left. He applied right rudder and added power to correct; however, the airplane exited the runway and entered a ground loop. The airplane sustained substantial damage to the right wing. The pilot reported no preaccident mechanical failures or malfunctions of the airplane that would have precluded normal operation.
Aircraft
- Registration
- N4580C
- Reported as
- Cessna 170 (B)
- Category
- Airplane
- Serial number
- 25524
- Built
- 1953
- Airframe hours
- 5,667.45
- Engine
- Cont Motor C145-2, 145 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Personal · Part 91
- Registered owner
- East Tennessee Pilots Club Inc
- Airworthiness certificate
- Standard, Normal
- Last inspection
- Annual · March 14, 2020 · 93.95 hours before
- Departed
- TN98 · Knoxville, TN
- Destination
- Same as departure
- Airport
- MNV · Monroe County, runway 5, 3,643 × 75 ft, asphalt
- Equipment
- ADS-B, Stall warning system
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
- 61
- Injuries
- None
- Certificate
- Private
- Airplane ratings
- Single-engine land
- Medical
- Class 3, With waivers/limitations
- Seat
- Left
- Restraint
- 4-point
- Flight hours
- 170 total · 37 in this make and model · 37 as pilot in command · 13 in the last 90 days · 4 in the last 30 days · 0 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- Calm
- Visibility
- 10 statute miles
- Lowest ceiling
- None
- Temperature
- 54 °F, dew point 25 °F
- Altimeter
- 30.25 inHg
- Observed at
- MNV
- METAR
- KTYS 221953Z 00000KT 10SM CLR 12/M04 A3023 RMK AO2 SLP239 T01171039 $
Docket · 4
The files NTSB released with the investigation on July 8, 2021, on NTSB’s docket system: statements, records, photos and specialists’ reports. 5.1 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.