- Date
- April 7, 2017, 13:00 local (18:00 UTC)
- Place
- Woodruff, WI
- Injuries
- 2 uninjured
- Damage
- Substantial damage
- Phase of flight
- Landing
- Aircraft
- N9363KStinson 108
- Defining event
- Landing-landing roll: Loss of control on ground
- Weather
- Visual (VMC) · Day
- Status
- Completed · report July 5, 2017
- Report
- Approved by Office Director
- NTSB office
- General Aviation Accidents
- Parties
- FAA/ FSDO
- FAA report
- 20170407006219A
- Case key
- 94986
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 receiving instruction's incorrect brake usage and failure to maintain directional control during the landing roll.
Findings · 4
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 flight instructor of the tailwheel-equipped airplane reported that, during a three-point landing touchdown, the airplane pulled to the left, and he heard a "pop." He added that the pilot who was flying and receiving instruction "locked up" the right brake. Subsequently, the airplane departed the runway surface to the right and ground looped. During an interview with a Federal Aviation Administration Aviation Safety Inspector, the pilot receiving instruction reported that, during the landing roll, the airplane drifted to the left, and he applied right brake to correct. He added that, upon braking, he heard the left tire blow, and the airplane departed the runway to the right. Subsequently, the airplane ground looped, the left main landing gear collapsed, and the left wing impacted the ground. The airplane sustained substantial damage to the left wing. The flight instructor reported that the tire "inner tube" on the left main landing gear failed during the landing roll.
Factual narrative
The flight instructor of the tailwheel-equipped airplane reported that during a 3-point landing touchdown, the airplane pulled to the left and he heard a "pop." He added that the pilot who was flying and receiving instruction "locked up" the right brake. Subsequently, the airplane departed the runway surface to the right, and ground looped. During an interview with a Federal Aviation Administration Aviation Safety Inspector, the pilot receiving flight instruction reported that during the landing roll, the airplane drifted to the left and he applied right brake to correct. He added that upon braking, he heard the left tire blow and the airplane departed the runway to the right. Subsequently, the airplane ground looped, the left main landing gear collapsed, and the left wing impacted the ground. The airplane sustained substantial damage to the left wing. The flight instructor reported that the tire "inner tube" on the left main landing gear failed during the landing roll.
Aircraft
- Registration
- N9363K
- Reported as
- Stinson 108 (2)
- Category
- Airplane
- Serial number
- 108-2363
- Built
- 1947
- Airframe hours
- 2,824.5
- Engine
- Franklin 6A4165-B3, 165 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Instructional · Part 91
- Operator
- Lakeland Aviation
- Registered owner
- Petersen, Mark C.
- Airworthiness certificate
- Standard, Normal
- Last inspection
- Annual · May 1, 2016
- Departed
- ARV · Minocqua-Woodruff, WI
- Destination
- ARV · Minocqua-Woodruff, WI
- Airport
- ARV · Lakeland/Noble F Lee Memorial, runway 36, 5,150 × 100 ft, asphalt
- Equipment
- Handheld GPS, Electronic flight bag or handheld device
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 · 2
As NTSB recorded them. NTSB leaves out names.
- Role
- Flight instructor
- Age
- 59
- Injuries
- None
- Certificates
- Private, Flight instructor, Commercial
- Airplane ratings
- Multi-engine land, Single-engine sea, Single-engine land
- Instrument ratings
- Airplane
- Medical
- Class 2, Without waivers/limitations
- Last flight review
- June 16, 2016
- Seat
- Right
- Restraint
- Lap only
- Flight hours
- 2,994.1 total · 41.5 in this make and model · 2,110.1 as pilot in command · 18.5 in the last 90 days · 4.9 in the last 30 days
- Role
- Student pilot
- Age
- 48
- Injuries
- None
- Certificate
- Private
- Airplane ratings
- Single-engine land
- Medical
- Class 3, With waivers/limitations
- Last flight review
- February 26, 2016
- Seat
- Left
- Restraint
- Lap only
- Flight hours
- 238.8 total · 1 in this make and model · 187 as pilot in command · 5 in the last 90 days · 4.3 in the last 30 days
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 300° at 6 knots
- Visibility
- 10 statute miles
- Lowest ceiling
- None
- Temperature
- 52 °F, dew point 14 °F
- Altimeter
- 30.06 inHg
- Observed at
- KARV
Docket · 4
The files NTSB released with the investigation on June 9, 2017, on NTSB’s docket system: statements, records, photos and specialists’ reports. 908 KB 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.