Wednesday, May 27, 2020

Part(s) Separation From Aircraft: Cessna U206F, N441GR; accident occurred August 18, 2018 in Pedro Bay, 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 Factual Report - National Transportation Safety Board:

Investigation Docket - National Transportation Safety Board:

Location: Pedro Bay, AK
Accident Number:ANC18LA067 
Date & Time: 08/18/2018, 1000 AKD
Aircraft: Cessna U206
Aircraft Damage: Substantial
Defining Event: Part(s) separation from AC
Injuries: 6 None
Flight Conducted Under: Part 135: Air Taxi & Commuter - Non-scheduled 

On August 18, 2018, about 1000 Alaska daylight time, a Cessna U206F airplane, N441GR, sustained substantial damage while landing at a remote unimproved tidal beach about 36 miles east of Pedro Bay, Alaska. The airplane was registered to AK Air Leasing, LLC and operated by K Bay Air, LLC as a visual flight rules (VFR) on-demand commercial flight under the provisions of 14 Code of Federal Regulations Part 135 when the accident occurred. The commercial pilot and five passengers were not injured. Visual meteorological conditions prevailed, and company flight following procedures were in effect. The flight departed Homer, Alaska, about 0900.

According to the pilot, before landing on the tidal beach, he conducted two passes over the landing area to check for debris and determine wind direction. After a stable approach, the left main and uphill tire touched down first followed by the right main tire. The pilot stated that after touchdown, it "felt like" the airplane had a flat tire and it subsequently veered to the right and came to rest in a left wing low attitude on a tidal mudflat. The airplane sustained substantial damage to the left wing, left horizontal stabilizer and left elevator.

An initial examination of the airplane, by the pilot, revealed that both main landing gear legs separated just above the main axle attach point.

An examination by the National Transportation Safety Board (NTSB) Materials Laboratory revealed that both main landing gear legs exhibited chevron marks leading to a thumbnail region consistent with fatigue cracking.

The NTSB Materials Laboratory examination report is in the public docket for this accident.

Pilot Information

Certificate: Commercial
Age: 39, Male
Airplane Rating(s): Multi-engine Land; Single-engine Land
Seat Occupied: Left
Other Aircraft Rating(s): None
Restraint Used:
Instrument Rating(s): Airplane
Second Pilot Present: No
Instructor Rating(s): Airplane Multi-engine; Airplane Single-engine
Toxicology Performed: No
Medical Certification: Class 2 Without Waivers/Limitations
Last FAA Medical Exam: 04/03/2018
Occupational Pilot: Yes
Last Flight Review or Equivalent: 07/29/2018
Flight Time:  4400 hours (Total, all aircraft), 1660 hours (Total, this make and model), 4300 hours (Pilot In Command, all aircraft), 204 hours (Last 90 days, all aircraft), 60 hours (Last 30 days, all aircraft), 2 hours (Last 24 hours, all aircraft) 

Aircraft and Owner/Operator Information

Aircraft Make: Cessna
Registration: N441GR
Model/Series:U206 F 
Aircraft Category: Airplane
Year of Manufacture: 1972
Amateur Built:No 
Airworthiness Certificate: Normal
Serial Number: U20601801
Landing Gear Type: Tricycle
Date/Type of Last Inspection: 08/10/2018, 100 Hour
Certified Max Gross Wt.:
Time Since Last Inspection:
Engines:  Reciprocating
Airframe Total Time: 4480 Hours as of last inspection
Engine Manufacturer: Continental
ELT: C126 installed, not activated
Engine Model/Series: IO-520-F
Registered Owner: AK Air Leasing LLC
Rated Power: 300 hp
Operator: K Bay Air LLC
Operating Certificate(s) Held: On-demand Air Taxi (135)
Operator Does Business As:
Operator Designator Code: K99C

Meteorological Information and Flight Plan

Conditions at Accident Site: Visual Conditions
Condition of Light:Day 
Observation Facility, Elevation: PAHO
Distance from Accident Site:
Observation Time: 1753 UTC
Direction from Accident Site:
Lowest Cloud Condition: Clear
Visibility:  10 Miles
Lowest Ceiling: Overcast / 6500 ft agl
Visibility (RVR):
Wind Speed/Gusts: Calm /
Turbulence Type Forecast/Actual:
Wind Direction:
Turbulence Severity Forecast/Actual:
Altimeter Setting: 30.3 inches Hg
Temperature/Dew Point: 12°C / 9°C
Precipitation and Obscuration: No Obscuration; No Precipitation
Departure Point: Homer, AK (PAHO)
Type of Flight Plan Filed: Company VFR
Destination: Pedro Bay, AK
Type of Clearance: None
Departure Time: 0900 AKD
Type of Airspace: Class G

Wreckage and Impact Information

Crew Injuries: 1 None
Aircraft Damage: Substantial
Passenger Injuries: 5 None
Aircraft Fire: None
Ground Injuries: N/A
Aircraft Explosion: None
Total Injuries: 6 None
Latitude, Longitude: 59.796944, -154.129722 (est)

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