- Date
- June 4, 2019, 15:00 local (22:00 UTC)
- Place
- Renton, WA
- Injuries
- 2 uninjured
- Damage
- Substantial damage
- Phase of flight
- Landing
- Aircraft
- N8685SCessna 150
- Defining event
- Landing: Loss of control on ground
- Weather
- Visual (VMC) · Day
- Status
- Completed · report November 6, 2019
- Report
- Approved by Office Director
- NTSB office
- General Aviation Accidents
- Parties
- FAA
- FAA report
- 20190604005659A
- Case key
- 99549
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 failure to maintain directional control and his overapplication of right rudder and the flight instructor's delayed remedial action during the landing, which resulted in a ground-loop.
Findings · 3
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 in the tailwheel-equipped airplane reported that, after landing, the airplane veered left. In an attempt to correct back to centerline, the pilot receiving instruction applied full right rudder. The instructor immediately applied full left rudder and brake to prevent a ground-loop, but the airplane ground looped to the right, the left main landing gear collapsed, and the left wing impacted the ground. The airplane sustained substantial damage to the left wing. The instructor reported that a Federal Aviation Administration inspector examined the airplane's systems and found no anomalies. The airport's automated weather observation station reported that, about the time of the accident, the wind was variable at 3 knots. The pilot landed the airplane on runway 34.
Factual narrative
The flight instructor giving instruction in a tailwheel-equipped airplane reported that, after landing, the airplane started veering to the left. In an attempt to correct back to centerline, the pilot receiving instruction applied full right rudder. The flight instructor immediately applied full left rudder and brake to stop the impending ground loop. The airplane ground looped to the right, the left main landing gear collapsed, and the left wing impacted the ground. The airplane sustained substantial damaged to the left wing. The flight instructor reported that the Federal Aviation Administration inspector examined the airplane's systems, which revealed no anomalies. The automated weather observation station located on the airport reported that, about the time of the accident, the wind was variable at 3 knots. The airplane landed on runway 34.
Aircraft
- Registration
- N8685S
- Reported as
- Cessna 150 (F)
- Category
- Airplane
- Serial number
- 15061985
- Built
- 1965
- Airframe hours
- 2,960
- Engine
- Lycoming O-320-E2D, 150 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Instructional · Part 91
- Airworthiness certificate
- Standard, Normal
- Last inspection
- Annual · February 7, 2019
- Departed
- BFI · Seattle, WA
- Destination
- BFI · Seattle, WA
- Airport
- RNT · Renton Muni, runway 34, 5,382 × 200 ft, concrete
- Equipment
- Electronic flight bag or handheld device, 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 · 2
As NTSB recorded them. NTSB leaves out names.
- Role
- Pilot
- Age
- 39
- Injuries
- None
- Certificate
- Private
- Airplane ratings
- Single-engine land
- Instrument ratings
- Airplane
- Medical
- Class 3, Without waivers/limitations
- Last flight review
- October 29, 2018
- Seat
- Left
- Flight hours
- 594 total · 2 in this make and model · 541 as pilot in command · 72 in the last 90 days · 30 in the last 30 days · 2 in the last 24 hours
- Role
- Flight instructor
- Age
- 32
- Injuries
- None
- Certificates
- Flight instructor, Military, Commercial
- Airplane ratings
- Single-engine land, Multi-engine land
- Instrument ratings
- Airplane
- Medical
- Class 1, Without waivers/limitations
- Last flight review
- August 12, 2017
- Seat
- Right
- Restraint
- 3-point
- Flight hours
- 2,049 total · 4 in this make and model · 1,757 as pilot in command · 113 in the last 90 days · 42 in the last 30 days · 1 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- Variable at 3 knots
- Visibility
- 6 statute miles
- Lowest ceiling
- None
- Temperature
- 70 °F, dew point 34 °F
- Altimeter
- 30.12 inHg
- Observed at
- KRNT
Docket · 2
The files NTSB released with the investigation on July 2, 2019, on NTSB’s docket system: statements, records, photos and specialists’ reports. 1.2 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.