Thursday, September 21, 2017

Piper PA-11, N4741M: Accident occurred September 13, 2017 in Petersville, Alaska

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: Petersville, AK
Accident Number: GAA17CA544
Date & Time: 09/13/2017, 1730 AKD
Registration: N4741M
Aircraft: PIPER PA 11
Aircraft Damage: Substantial
Defining Event: Nose over/nose down
Injuries: 1 None
Flight Conducted Under: Part 91: General Aviation - Personal

Analysis

The pilot of the tailwheel-equipped airplane reported that, while performing a wheel landing on an unimproved gravel airstrip, a wind gust lifted the "weight off of [the] tires and initiated a skid." He added that, as the airplane settled back on the airstrip, the tail rose rapidly due to the brakes being applied, and the airplane nosed over.

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

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 overapplication of brakes, which resulted in a nose-over.

Findings

Aircraft
Surface speed/braking - Capability exceeded (Cause)
Brake - Incorrect use/operation (Cause)

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

Environmental issues
Gusts - Effect on operation

Factual Information

History of Flight

Landing
Nose over/nose down (Defining event)
  
Pilot Information

Certificate: Private
Age: 25, Male
Airplane Rating(s): Single-engine Land
Seat Occupied: Front
Other Aircraft Rating(s): None
Restraint Used:  3-point
Instrument Rating(s): None
Second Pilot Present: No
Instructor Rating(s): None
Toxicology Performed: No
Medical Certification: Class 1 Without Waivers/Limitations
Last FAA Medical Exam: 01/06/2017
Occupational Pilot: No
Last Flight Review or Equivalent: 02/15/2017
Flight Time: (Estimated) 149.3 hours (Total, all aircraft), 74 hours (Total, this make and model), 95.7 hours (Pilot In Command, all aircraft), 27.5 hours (Last 90 days, all aircraft), 20.6 hours (Last 30 days, all aircraft), 1.1 hours (Last 24 hours, all aircraft)

Aircraft and Owner/Operator Information

Aircraft Manufacturer: PIPER
Registration: N4741M
Model/Series: PA 11 NO SERIES
Aircraft Category: Airplane
Year of Manufacture: 1947
Amateur Built: No
Airworthiness Certificate: Normal
Serial Number: 11-254
Landing Gear Type: Tailwheel
Seats: 2
Date/Type of Last Inspection: 07/13/2017, Annual
Certified Max Gross Wt.: 1220 lbs
Time Since Last Inspection: 
Engines: 1 Reciprocating
Airframe Total Time: 1377.4 Hours at time of accident
Engine Manufacturer: CONT MOTOR
ELT: C126 installed, not activated
Engine Model/Series: O-200-A
Registered Owner: NICHOLAS M. LARSON
Rated Power: 100 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: PATK, 356 ft msl
Observation Time: 0153 UTC
Distance from Accident Site: 51 Nautical Miles
Direction from Accident Site: 93°
Lowest Cloud Condition: 
Temperature/Dew Point: 10°C / 9°C
Lowest Ceiling: Broken / 4500 ft agl
Visibility:  10 Miles
Wind Speed/Gusts, Direction: 3 knots, 300°
Visibility (RVR): 
Altimeter Setting: 30.06 inches Hg
Visibility (RVV): 
Precipitation and Obscuration: No Obscuration; No Precipitation
Departure Point: Petersville, AK
Type of Flight Plan Filed: None
Destination: Petersville, AK
Type of Clearance: None
Departure Time: 1700 AKD
Type of Airspace: Class G
  
Wreckage and Impact Information

Crew Injuries: 1 None
Aircraft Damage: Substantial
Passenger Injuries: N/A
Aircraft Fire: None
Ground Injuries: N/A
Aircraft Explosion: None
Total Injuries: 1 None
Latitude, Longitude: 62.380556, -151.908611 (est)

Additional Participating Entity:
Federal Aviation Administration / Flight Standards District Office; Anchorage, Alaska

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

http://registry.faa.gov/N4741M

NTSB Identification: GAA17CA544
14 CFR Part 91: General Aviation
Accident occurred Wednesday, September 13, 2017 in Petersville, AK
Aircraft: PIPER PA 11, registration: N4741M
Injuries: 1 Uninjured.

NTSB investigators used data provided by various entities, including, but not limited to, the Federal Aviation Administration and/or the operator and did not travel in support of this investigation to prepare this aircraft accident report.

The pilot of the tailwheel-equipped airplane reported that, while performing a wheel landing on an unimproved gravel airstrip, a gust of wind lifted the "weight off of [the] tires and initiated a skid." He added that, as the airplane settled back on the airstrip the tail rose rapidly due to the brakes being applied, and the airplane nosed over.

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

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

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