- Date
- June 3, 2012, 06:00 local (12:00 UTC)
- Place
- Riverton, WY
- Injuries
- 1 uninjured
- Damage
- Substantial damage
- Phase of flight
- Landing
- Aircraft
- N5291Grumman G-164A
- Defining event
- Landing-landing roll: Loss of control on ground
- Weather
- Visual (VMC) · Dawn
- Status
- Completed · report September 13, 2012
- Report
- Approved by Office Director
- NTSB office
- Western Pacific Region
- Parties
- Casper FSFO
- FAA report
- 20120603010199A
- Case key
- 83830
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 loss of directional control during the landing roll and his deliberate application of excessive braking pressure, which resulted in a noseover.
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 pilot, who was flying a tailwheel-equipped agricultural aerial application airplane, was landing on a dirt airstrip in order to take on a load of application chemical. After he landed on the main gear and lowered the tailwheel to the surface, the airplane started to veer toward the side of the runway. The pilot was unable to keep the airplane from departing the side of the runway, and, because it was heading toward a big gully, he applied as much braking force as possible. As he applied the braking force, the airplane nosed over onto its back, which resulted in substantial damage to the upper wing and the vertical stabilizer. According to the pilot, there was no malfunction or anomaly associated with the airplane's directional control system or its braking system.
Factual narrative
The pilot, who was flying a tail wheel equipped agricultural aerial application airplane, was landing on a dirt strip in order to take on a load of application chemical. After landing on the main gear and lowering the tail wheel to the surface, the airplane started to veer toward the side of the runway. The pilot was unable to keep the airplane from departing the side of the runway, and because it was heading toward a big gully, he applied as much braking force as he was able. As he applied the braking force, the airplane nosed over onto its back, resulting in substantial damage to the upper wing and the vertical stabilizer. According to the pilot, there was no malfunction or anomaly associated with the airplane's directional control systems or its braking system.
Aircraft
- Registration
- N5291
- Reported as
- Grumman G-164A
- Category
- Airplane
- Serial number
- 572
- Engine
- P&W R-985 SERIES, 450 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Aerial application · Part 137
- Operator
- Sky Aviation Corp, doing business as Aerial Application
- Registered owner
- Sky Aviation Corp
- Airworthiness certificate
- Special, Restricted (Special)
- Departed
- KRIW · Riveerton, WY
- Destination
- N/A · Riverton, WY
- Airport
- N/A · Hidden Valley Airport, runway 34, 4,000 × 55 ft, dirt
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
- 28
- Injuries
- None
- Certificate
- Commercial
- Airplane ratings
- Single-engine land
- Medical
- Class 2, Without waivers/limitations
- Flight hours
- 330 total · 23 in this make and model
Weather
- Conditions
- Visual (VMC) · Dawn
- Visibility
- 10 statute miles
- Lowest ceiling
- None
- Temperature
- 61 °F
Docket · 2
The files NTSB released with the investigation on July 3, 2012, on NTSB’s docket system: statements, records, photos and specialists’ reports. 216 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.