Tuesday, March 13, 2018

Piper J-3C, N48694: Accident occurred October 03, 2017 at Yakima Air Terminal / McAllister Field (KYKM), Yakima County, Washington

Additional Participating Entity:
Federal Aviation Administration / Flight Standards District Office; Spokane, Washington

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

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

http://registry.faa.gov/N48694

Location:  Yakima, WA
Accident Number: GAA18CA001
Date & Time: 10/03/2017, 1030 PDT
Registration: N48694
Aircraft: PIPER J3C
Aircraft Damage: Substantial
Defining Event: Loss of control on ground
Injuries: 2 None
Flight Conducted Under: Part 91: General Aviation - Instructional 

Analysis

The flight instructor of the tailwheel-equipped airplane reported that the purpose of the flight was to demonstrate a short-field takeoff to an observing student.

During the takeoff roll, about rotation speed, the left wing unexpectedly dropped and impacted the ground. Subsequently, the airplane ground looped and sustained substantial damage to both wings and the empennage.

The flight instructor 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 flight instructor's failure to maintain directional control during the takeoff roll. 

Findings

Aircraft
Directional control - Not attained/maintained (Cause)

Personnel issues
Aircraft control - Instructor/check pilot (Cause)

Factual Information

History of Flight

Takeoff
Loss of control on ground (Defining event)


The flight instructor of the tailwheel equipped airplane reported that the purpose of the flight was to demonstrate a short field takeoff to an observing student.

During the takeoff roll, about rotation speed, the left wing unexpectedly dropped and impacted the ground. Subsequently the airplane ground looped and sustained substantial damage to both wings and the empennage.

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

Flight Instructor Information

Certificate: Flight Instructor; Commercial
Age: 84, Male
Airplane Rating(s): Multi-engine Land; Single-engine Land
Seat Occupied: Rear
Other Aircraft Rating(s):  Balloon; Glider; Helicopter
Restraint Used: Unknown
Instrument Rating(s): Airplane
Second Pilot Present: Yes
Instructor Rating(s): Airplane Multi-engine; Airplane Single-engine
Toxicology Performed: No
Medical Certification: BasicMed With Waivers/Limitations
Last FAA Medical Exam: 05/10/2017
Occupational Pilot: No
Last Flight Review or Equivalent:  10/29/2015
Flight Time:  (Estimated) 3800 hours (Total, all aircraft), 300 hours (Total, this make and model), 3500 hours (Pilot In Command, all aircraft), 29 hours (Last 90 days, all aircraft), 9 hours (Last 30 days, all aircraft), 0.6 hours (Last 24 hours, all aircraft)

Student Pilot Information

Certificate: Private
Age: 75, Male
Airplane Rating(s): Single-engine Land
Seat Occupied: Front
Other Aircraft Rating(s): None
Restraint Used: Unknown
Instrument Rating(s): None
Second Pilot Present: Yes
Instructor Rating(s): None
Toxicology Performed: No
Medical Certification:  BasicMed Without Waivers/Limitations
Last FAA Medical Exam: 05/25/2017
Occupational Pilot: No
Last Flight Review or Equivalent: 06/02/2017
Flight Time: (Estimated) 

Aircraft and Owner/Operator Information

Aircraft Manufacturer: PIPER
Registration: N48694
Model/Series: J3C
Aircraft Category: Airplane
Year of Manufacture: 1943
Amateur Built: No
Airworthiness Certificate: Normal
Serial Number: 10377
Landing Gear Type: Tailwheel
Seats: 2
Date/Type of Last Inspection: 04/08/2017, Annual
Certified Max Gross Wt.: 1220 lbs
Time Since Last Inspection:
Engines: 1 Reciprocating
Airframe Total Time:  3037.7 Hours at time of accident
Engine Manufacturer: CONT MOTOR
ELT: C91  installed, not activated
Engine Model/Series: C-85-12F
Registered Owner: On file
Rated Power: 85 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: KYKM, 1066 ft msl
Observation Time: 1753 UTC
Distance from Accident Site: 0 Nautical Miles
Direction from Accident Site: 285°
Lowest Cloud Condition: Clear
Temperature/Dew Point: 16°C / 1°C
Lowest Ceiling: None
Visibility:  10 Miles
Wind Speed/Gusts, Direction: Light and Variable, Variable
Visibility (RVR):
Altimeter Setting: 30.34 inches Hg
Visibility (RVV):
Precipitation and Obscuration: No Obscuration; No Precipitation
Departure Point: Yakima, WA (YKM)
Type of Flight Plan Filed: None
Destination: Yakima, WA (YKM)
Type of Clearance: VFR
Departure Time: 1030 PDT
Type of Airspace: Class D

Airport Information

Airport: YAKIMA AIR TERMINAL/MCALLISTER (YKM)
Runway Surface Type: Asphalt
Airport Elevation: 1098 ft
Runway Surface Condition: Dry
Runway Used: 27
IFR Approach: None
Runway Length/Width: 7604 ft / 150 ft
VFR Approach/Landing: None

Wreckage and Impact Information

Crew Injuries: 2 None
Aircraft Damage: Substantial
Passenger Injuries: N/A
Aircraft Fire: None
Ground Injuries: N/A
Aircraft Explosion: None
Total Injuries: 2 None
Latitude, Longitude:  46.566667, -120.535833 (est)

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