Tuesday, June 11, 2019

Runway Excursion: Aviat A-1B, N35AH; accident occurred June 09, 2019 in Pingree, Bingham County, Idaho

Additional Participating Entity:
Federal Aviation Administration / Flight Standards District Office; Salt Lake City, Utah

Aviation Accident Final Report - National Transportation Safety Board: https://app.ntsb.gov/pdf

Investigation Docket - National Transportation Safety Board: https://dms.ntsb.gov/pubdms


Location: Pingree, ID
Accident Number: GAA19CA325
Date & Time: 06/09/2019, 1500 MDT
Registration: N35AH
Aircraft: Aviat A1
Aircraft Damage: Substantial
Defining Event: Runway excursion
Injuries: 2 None
Flight Conducted Under: Part 91: General Aviation - Personal 


The pilot of the tailwheel-equipped airplane reported that, while landing on a private, dirt airstrip, he lost sight of the airstrip, and the airplane veered left. Concerned the airplane would ground loop, he applied minimal right rudder. He then chose to abort the landing and applied full power. As the airplane was about to become airborne, it exited the runway to the left, and the main landing gear encountered water. The pilot reduced the engine power to idle, and the airplane nosed over.

The airplane sustained substantial damage to the left wing lift strut.

The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation.

Probable Cause and Findings

The National Transportation Safety Board determines the probable cause(s) of this accident to be:
The pilot's improper rudder application during landing on a dirt airstrip, which resulted in a loss of directional control, runway excursion, and subsequent nose-over


Directional control - Not attained/maintained (Cause)
Rudder control system - Incorrect use/operation (Cause)

Personnel issues
Aircraft control - Pilot (Cause)
Use of equip/system - Pilot (Cause)

Environmental issues
Water/moisture - Effect on operation

Factual Information

History of Flight

Loss of control on ground

Landing-aborted after touchdown
Attempted remediation/recovery
Runway excursion (Defining event)
Nose over/nose down

Pilot Information

Certificate: Private
Age: 57, Male
Airplane Rating(s): Single-engine Land
Seat Occupied: Front
Other Aircraft Rating(s): Glider
Restraint Used:
Instrument Rating(s): None
Second Pilot Present: No
Instructor Rating(s): None
Toxicology Performed: No
Medical Certification: Class 3 Without Waivers/Limitations
Last FAA Medical Exam: 03/25/2018
Occupational Pilot: No
Last Flight Review or Equivalent: 09/14/2018
Flight Time:   (Estimated) 1230.6 hours (Total, all aircraft), 78.4 hours (Total, this make and model), 1185.2 hours (Pilot In Command, all aircraft), 41.2 hours (Last 90 days, all aircraft), 21.4 hours (Last 30 days, all aircraft), 3 hours (Last 24 hours, all aircraft)

Aircraft and Owner/Operator Information

Aircraft Make: Aviat
Registration: N35AH
Model/Series: A1 B
Aircraft Category: Airplane
Year of Manufacture: 2007
Amateur Built: No
Airworthiness Certificate: Normal
Serial Number: 2417
Landing Gear Type: Tailwheel
Seats: 2
Date/Type of Last Inspection: 03/29/2019, Annual
Certified Max Gross Wt.: 2200 lbs
Time Since Last Inspection:
Engines: 1 Reciprocating
Airframe Total Time: 608.7 Hours at time of accident
Engine Manufacturer: Lycoming
ELT: C91A installed, activated, did not aid in locating accident
Engine Model/Series: IO-360-A1D6
Registered Owner: K9 Air Llc
Rated Power: 200 hp
Operator: On file
Operating Certificate(s) Held: None

Meteorological Information and Flight Plan

Conditions at Accident Site: Visual Conditions
Condition of Light: Day
Observation Facility, Elevation: KPIH, 4478 ft msl
Distance from Accident Site: 12 Nautical Miles
Observation Time: 2053 UTC
Direction from Accident Site: 172°
Lowest Cloud Condition: Few / 6000 ft agl
Visibility:  10 Miles
Lowest Ceiling:
Visibility (RVR):
Wind Speed/Gusts: 7 knots /
Turbulence Type Forecast/Actual: None / None
Wind Direction: 320°
Turbulence Severity Forecast/Actual: N/A / N/A
Altimeter Setting: 30.49 inches Hg
Temperature/Dew Point: 17°C / -3°C
Precipitation and Obscuration: No Obscuration; No Precipitation
Departure Point: Paris, ID (1U7)
Type of Flight Plan Filed: None
Destination: Pingree, ID (PVT)
Type of Clearance: None
Departure Time: 1330 MDT
Type of Airspace: Class G

Airport Information

Airport: Private Field (PVT)
Runway Surface Type: Dirt
Airport Elevation: 4455 ft
Runway Surface Condition: Dry
Runway Used: 21
IFR Approach: None
Runway Length/Width: 4000 ft / 60 ft
VFR Approach/Landing: Stop and Go; Traffic Pattern

Wreckage and Impact Information

Crew Injuries: 1 None
Aircraft Damage: Substantial
Passenger Injuries: 1 None
Aircraft Fire: None
Ground Injuries: N/A
Aircraft Explosion: None
Total Injuries: 2 None
Latitude, Longitude: 43.117222, -112.607778 (est)

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