Tuesday, March 03, 2020

Piper PA-18-150 Super Cub, N7384D: Accident occurred February 28, 2020 at Big Lake Airport (BGQ), Alaska -and- Incident occurred January 22, 2017 in Kodiak, Alaska

Accident airplane

Water paste test

The list of attendees at the engine run 

View of damaged lift strut 

 View of damaged empennage 

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 


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


https://registry.faa.gov/N7384D


Location: Big Lake, AK

Accident Number: ANC20CA030
Date & Time: 02/28/2020, 1640 AKS
Registration: N7384D
Aircraft: Piper PA18
Aircraft Damage: Substantial
Defining Event: Loss of engine power (partial)
Injuries: 1 None
Flight Conducted Under: Part 91: General Aviation - Personal

The pilot reported that while performing touch-and-go maneuvers, he had applied carburetor heat during the second landing. During the takeoff, after the second landing, he turned the carburetor heat off and applied full power. Once airborne, the airplane began to lose power and he manipulated the throttle and carburetor heat levers but was unable to regain power. He chose to make a precautionary landing straight-ahead with partial engine power. During the landing on the remaining runway, the airplane departed the end of the runway, encountered unmaintained snow, and nosed over.

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

A post-accident engine examination and test run was accomplished by the NTSB and FAA with no malfunctions or failures revealed.

The exact probability of carburetor icing was not able to be calculated for the accident airport due to the closest weather observation station being 8 miles away. The pilot however stated that while landing, there was about 3 inches of fresh snow on the runway, and that he believed the propeller wash likely introduced snow into the intake, which created carburetor ice. He added that he should have left the carburetor heat on longer after the second landing.

Pilot Information

Certificate: Airline Transport; Commercial
Age: 36, Male
Airplane Rating(s): Multi-engine Land; Single-engine Land; Single-engine Sea
Seat Occupied: Front
Other Aircraft Rating(s): Glider
Restraint Used:
Instrument Rating(s): Airplane
Second Pilot Present: No
Instructor Rating(s):None 
Toxicology Performed:No 
Medical Certification: Class 1 Without Waivers/Limitations
Last FAA Medical Exam: 04/18/2019
Occupational Pilot: Yes
Last Flight Review or Equivalent: 08/05/2019
Flight Time: (Estimated) 11104 hours (Total, all aircraft), 570 hours (Total, this make and model), 5783 hours (Pilot In Command, all aircraft), 120 hours (Last 90 days, all aircraft), 39 hours (Last 30 days, all aircraft) 

Aircraft and Owner/Operator Information

Aircraft Make: Piper
Registration:N7384D 
Model/Series: PA18 150
Aircraft Category: Airplane
Year of Manufacture:1957 
Amateur Built:No 
Airworthiness Certificate: Normal
Serial Number: 18-5749
Landing Gear Type: Tailwheel
Seats:2 
Date/Type of Last Inspection: 02/22/2020, Annual
Certified Max Gross Wt.: 1750 lbs
Time Since Last Inspection:
Engines: 1 Reciprocating
Airframe Total Time: 3382.2 Hours as of last inspection
Engine Manufacturer: Lycoming
ELT: C126 installed, activated, did not aid in locating accident
Engine Model/Series: O-320-E2D
Registered Owner: On file
Rated Power: 150
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: PAWS, 354 ft msl
Distance from Accident Site: 8 Nautical Miles
Observation Time: 0156 UTC
Direction from Accident Site: 73°
Lowest Cloud Condition: Clear
Visibility:  10 Miles
Lowest Ceiling: None
Visibility (RVR):
Wind Speed/Gusts: 3 knots /
Turbulence Type Forecast/Actual:
Wind Direction: 250°
Turbulence Severity Forecast/Actual:
Altimeter Setting: 29.96 inches Hg
Temperature/Dew Point: -5°C / -13°C
Precipitation and Obscuration: No Obscuration; No Precipitation
Departure Point: Palmer, AK (4AK6)
Type of Flight Plan Filed: None
Destination: Big Lake, AK (BGQ)
Type of Clearance:None 
Departure Time: 1550 AKS
Type of Airspace: Class G

Airport Information

Airport: BIG LAKE (BGQ)
Runway Surface Type: Dirt; Gravel; Ice; Snow
Airport Elevation: 157 ft
Runway Surface Condition:Snow 
Runway Used: 7
IFR Approach:None 
Runway Length/Width: 2450 ft / 70 ft
VFR Approach/Landing: Precautionary Landing

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: 61.534722, -149.798889 (est)

January 22nd, 2017

January 22, 2017:  Aircraft on landing on a lake, flipped over. 

Date: 22-JAN-17
Time: 20:43:00Z
Regis#: N7384D
Aircraft Make: PIPER
Aircraft Model: PA18
Event Type: INCIDENT
Highest Injury: NONE
Aircraft Missing: No
Damage: UNKNOWN
Activity: UNKNOWN
Flight Phase: LANDING (LDG)
City: KODIAK
State: ALASKA

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