Saturday, March 07, 2020

Loss of Control in Flight: Cessna 175A Skylark, N6837E; accident occurred September 15, 2019 in Toklat, Alaska

View of left wing damage. 


Additional Participating Entity:
Federal Aviation Administration / Flight Standards District Office; Fairbanks, 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/N6837E


Location: Toklat, AK
Accident Number: GAA19CA555
Date & Time: 09/15/2019, 1245 AKD
Registration: N6837E
Aircraft: CESSNA 175
Aircraft Damage: Substantial
Defining Event: Loss of control in flight
Injuries: 1 Serious
Flight Conducted Under: Part 91: General Aviation - Personal 

The pilot of the float-equipped airplane reported that, during the initial climb, the airplane seemed to experience a loss of lift. Uncertain what was causing the loss of lift, he turned left back to the lake. As soon as the airplane turned, a gust hit the tail and he lost control of the airplane. The airplane aerodynamically stalled and the impacted the water.

The airplane sustained substantial damage to the left wing and fuselage.

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

The pilot reported that, about the time of the accident, the wind was variable at 10 knots, gusting to 20 knots. The airplane was departing to the north. 

Pilot Information

Certificate: Private
Age: 64, Male
Airplane Rating(s): Single-engine Land; Single-engine Sea
Seat Occupied: Left
Other Aircraft Rating(s): None
Restraint Used:
Instrument Rating(s): None
Second Pilot Present: No
Instructor Rating(s): None
Toxicology Performed: No
Medical Certification: BasicMed With Waivers/Limitations
Last FAA Medical Exam: 07/03/2019
Occupational Pilot: No
Last Flight Review or Equivalent: 06/16/2019
Flight Time:   (Estimated) 1500 hours (Total, all aircraft), 1500 hours (Pilot In Command, all aircraft) 

Aircraft and Owner/Operator Information

Aircraft Make: CESSNA
Registration: N6837E
Model/Series: 175 A
Aircraft Category: Airplane
Year of Manufacture: 1960
Amateur Built: No
Airworthiness Certificate: Normal
Serial Number: 56337
Landing Gear Type: Float
Seats: 4
Date/Type of Last Inspection: 08/12/2019, Annual
Certified Max Gross Wt.: 2550 lbs
Time Since Last Inspection:
Engines: 1 Reciprocating
Airframe Total Time: 3336.2 Hours as of last inspection
Engine Manufacturer: Franklin
ELT: C126 installed, activated, aided in locating accident
Engine Model/Series: 6A-350-CIR
Registered Owner: BRAD ZWEIFEL CO INC
Rated Power: 220 hp
Operator: On file
Operating Certificate(s) Held: None 

Meteorological Information and Flight Plan

Conditions at Accident Site: Unknown
Condition of Light: Day
Observation Facility, Elevation: PANN, 362 ft msl
Distance from Accident Site: 35 Nautical Miles
Observation Time: 2053 UTC
Direction from Accident Site: 87°
Lowest Cloud Condition:
Visibility:  10 Miles
Lowest Ceiling: Overcast / 8500 ft agl
Visibility (RVR):
Wind Speed/Gusts: 8 knots /
Turbulence Type Forecast/Actual:None / None 
Wind Direction:80° 
Turbulence Severity Forecast/Actual:N/A / N/A 
Altimeter Setting: 29.52 inches Hg
Temperature/Dew Point: 14°C / 7°C
Precipitation and Obscuration: No Obscuration; No Precipitation
Departure Point: Toklat, AK
Type of Flight Plan Filed: Unknown
Destination: Nenana, AK (ENN)
Type of Clearance: Unknown
Departure Time:  AKD
Type of Airspace: Class G 

Wreckage and Impact Information

Crew Injuries: 1 Serious
Aircraft Damage: Substantial
Passenger Injuries: N/A
Aircraft Fire:None 
Ground Injuries:N/A 
Aircraft Explosion: None
Total Injuries: 1 Serious
Latitude, Longitude:  64.527778, -150.423333 (est)

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