- Date
- August 25, 2018, 12:20 local (19:20 UTC)
- Place
- Prineville, OR
- Injuries
- 2 uninjured
- Damage
- Substantial damage
- Phase of flight
- Landing
- Aircraft
- N4569CCessna 170
- Defining event
- Landing-landing roll: Loss of control on ground
- Weather
- Visual (VMC) · Day
- Status
- Completed · report September 26, 2019
- Report
- Approved by Office Director
- NTSB office
- General Aviation Accidents
- Parties
- FAA
- FAA report
- 20180825015389A
- Case key
- 98161
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 roll.
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 of the tailwheel-equipped airplane reported that, during the landing roll about 40 knots ground speed, the airplane drifted left, and he corrected back to the runway center. However, the airplane then drifted right, and he was unable to correct back to the runway center. The airplane ground looped to the right, and the left wing struck the ground before the airplane came to a stop. The airplane sustained substantial damage to the forward lower fuselage bulkhead and the left wing. The pilot reported that there were no mechanical malfunctions or failures with the airplane that would have precluded normal operation.
Factual narrative
The pilot of the tailwheel-equipped airplane reported that during the landing roll about 40 knots ground speed, the airplane drifted to the left and he corrected back to the center. However, the airplane drifted to the right and he was unable to correct back to center. The airplane ground looped to the right, and the left wing struck the ground before the airplane came to a stop. The airplane sustained substantial damage to forward lower fuselage bulkhead and the left wing. The pilot reported that there were no mechanical malfunctions or failures with the airplane that would have precluded normal operation.
Aircraft
- Registration
- N4569C
- Reported as
- Cessna 170 (B)
- Category
- Airplane
- Serial number
- 25423
- Built
- 1963
- Airframe hours
- 4,137
- Engine
- Lycoming O-360-A1A, 180 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Personal · Part 91
- Airworthiness certificate
- Standard, Normal
- Last inspection
- Annual · July 7, 2018
- Departed
- S33 · Madras, OR
- Destination
- S39 · Prineville, OR
- Airport
- S39 · Prineville, runway 33, 4,054 × 40 ft, gravel
- Equipment
- None
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
- 45
- Injuries
- None
- Certificate
- Private
- Airplane ratings
- Single-engine land
- Medical
- Class 3, With waivers/limitations
- Last flight review
- July 11, 2017
- Seat
- Left
- Restraint
- Lap only
- Flight hours
- 145 total · 50 in this make and model · 145 as pilot in command · 16 in the last 90 days · 7 in the last 30 days
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 300° at 4 knots
- Visibility
- 10 statute miles
- Lowest ceiling
- None
- Temperature
- 72 °F, dew point 34 °F
- Altimeter
- 30.03 inHg
- Observed at
- KRDM, 10 nm away
Docket · 2
The files NTSB released with the investigation on May 13, 2019, on NTSB’s docket system: statements, records, photos and specialists’ reports. 3.4 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.