Wednesday, September 25, 2019

Piper PA-18 Super Cub, N5057Y: Accident occurred September 05, 2019 at Birchwood Airport (PABV), Chugiak, Alaska

The National Transportation Safety Board did not travel to the scene of this accident.

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

Aviation Accident Preliminary Report - National Transportation Safety Board:

Location: Chugiak, AK
Accident Number: ANC19LA053
Date & Time: 09/05/2019, 1540 AKD
Registration: N5057Y
Aircraft: Piper PA18
Injuries: 2 None
Flight Conducted Under: Part 91: General Aviation - Instructional

On September 5, 2019, about 1540 Alaska daylight time, a tundra tire, tailwheel-equipped Piper PA-18 Super Cub airplane, N5057Y, sustained substantial damage following a nose over while landing at Birchwood Airport (PABV), Chugiak, Alaska. The certificated flight instructor, seated in the aft seat, and private pilot receiving instruction, seated in the front seat, were not injured. The airplane was registered to a private individual and operated by the pilot receiving instruction, under the provisions of 14 Code of Federal Regulations Part 91 when the accident occurred. Visual meteorological conditions prevailed, and no flight plan had been filed. The local area instructional flight departed PABV.

According to the pilot receiving instruction, the instructor had taken control of the airplane to demonstrate a landing. After touchdown, and during the landing roll on Runway 20L, an 1,800 ft. long by 50 ft. wide gravel-covered site, the airplane nosed over sustaining substantial damage to the right lift strut and rudder.

The flight instructor reported that he took control of the airplane to demonstrate a landing. He said that, during the landing rollout, and after the tailwheel touched down, he noticed the tail begin to rise. As the tail continued to rise, he asked the pilot receiving instruction "what are you doing?", who responded "I don't know, what are you doing?" Both pilots indicated that they were not applying pressure on the heel brake pedals during the event.

A detailed brake system inspection is pending.

The closest weather reporting facility is PABV. At 1556, a METAR from PABV was reporting in part: wind, 260° at 3 knots; visibility, 10 statute miles; sky condition, clear; temperature, 63° F; dew point 46° F; and an altimeter setting of 30.20 inches of mercury. 

Aircraft and Owner/Operator Information

Aircraft Make: Piper
Registration: N5057Y
Model/Series: PA18 150
Aircraft Category: Airplane
Amateur Built: No
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: PABV, 83 ft msl
Observation Time: 2356 UTC
Distance from Accident Site: 0 Nautical Miles
Temperature/Dew Point: 17°C / 8°C
Lowest Cloud Condition: Clear
Wind Speed/Gusts, Direction: 3 knots / , 260°
Lowest Ceiling: None
Visibility:  10 Miles
Altimeter Setting: 30.2 inches Hg
Type of Flight Plan Filed: None
Departure Point: Birchwood, AK (BCV)
Destination: Birchwood, AK (BCV)

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: 61.416111, -149.508333

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