Sunday, July 7, 2019

Loss of Control on Ground: Cessna 150, N5999T, accident occurred May 21, 2018 at Bemidji Regional Airport (KBJI), Beltrami County, Minnesota

Additional Participating Entity:
Federal Aviation Administration / Flight Standards District Office; Minneapolis, Minnesota 

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

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

Aviation Accident Data Summary - National Transportation Safety Board: https://app.ntsb.gov/pdf

http://registry.faa.gov/N5999T

Location: Bemidgi, MN
Accident Number: GAA18CA293
Date & Time: 05/21/2018, 1920 CDT
Registration: N5999T
Aircraft: CESSNA 150 
Aircraft Damage: Substantial
Defining Event: Loss of control on ground
Injuries: 1 None
Flight Conducted Under: Part 91: General Aviation - Instructional

Analysis

The student pilot reported that, during the landing roll, the airplane encountered a right crosswind gust, and the right wing lifted. He added that "the airplane sidestepped to the left and the left main landing gear wheel assembly separated, and the left-wing tip struck the ground." The left main landing gear strut contacted the runway surface, and the airplane skidded to a stop.

The airplane sustained substantial damage to the left main landing gear attachment points.

The METAR at the accident airport reported that, about the time of the accident, the wind was from 180° at 6 knots. The student landed the airplane on runway 13.

The student reported that there were no mechanical malfunctions or failures with the airplane that would have precluded normal operation. Photographs taken by the pilot during a postaccident examination revealed that an extension casting, which was part of the tailwheel conversion kit, failed where the two lower landing gear strut attachment bolts connect to the extension casting. 

Probable Cause and Findings

The National Transportation Safety Board determines the probable cause(s) of this accident to be:
The student pilot's failure to maintain lateral control of the airplane during the landing roll, which resulted in a side load and subsequent failure of the left main landing gear extension casting.

Findings

Aircraft
Lateral/bank control - Not attained/maintained (Cause)

Personnel issues
Aircraft control - Student pilot (Cause)

Factual Information

History of Flight

Landing
Other weather encounter
Loss of control on ground (Defining event)
Part(s) separation from AC 

Student Pilot Information

Certificate: Student
Age: 65, Male
Airplane Rating(s): None
Seat Occupied:Left 
Other Aircraft Rating(s): None
Restraint Used: Lap Only
Instrument Rating(s): None
Second Pilot Present: No
Instructor Rating(s): None
Toxicology Performed: No
Medical Certification: Class 3 With Waivers/Limitations
Last FAA Medical Exam: 06/30/2017
Occupational Pilot: No
Last Flight Review or Equivalent:
Flight Time:  (Estimated) 70 hours (Total, all aircraft), 67 hours (Total, this make and model), 18 hours (Pilot In Command, all aircraft), 16 hours (Last 90 days, all aircraft), 5 hours (Last 30 days, all aircraft), 2 hours (Last 24 hours, all aircraft)

Aircraft and Owner/Operator Information

Aircraft Make: CESSNA
Registration: N5999T
Model/Series: 150 D
Aircraft Category: Airplane
Year of Manufacture:1964 
Amateur Built:No 
Airworthiness Certificate: Utility
Serial Number: 15060699
Landing Gear Type: Tailwheel
Seats: 2
Date/Type of Last Inspection: 06/27/2017, Annual
Certified Max Gross Wt.: 1600 lbs
Time Since Last Inspection:
Engines: 1 Reciprocating
Airframe Total Time: 3461 Hours at time of accident
Engine Manufacturer: Continental
ELT: Installed, not activated
Engine Model/Series: O-200A
Registered Owner: BEMIDJI FLYING CLUB INC.
Rated Power: 100 hp
Operator:BEMIDJI FLYING CLUB INC. 
Operating Certificate(s) Held: None 

Meteorological Information and Flight Plan

Conditions at Accident Site: Visual Conditions
Condition of Light: Dusk
Observation Facility, Elevation: KBJI, 1392 ft msl
Distance from Accident Site: 1 Nautical Miles
Observation Time: 0015 UTC
Direction from Accident Site: 174°
Lowest Cloud Condition: Clear
Visibility: 10 Miles
Lowest Ceiling: None
Visibility (RVR): 
Wind Speed/Gusts: 6 knots /
Turbulence Type Forecast/Actual: / None
Wind Direction: 180°
Turbulence Severity Forecast/Actual: / N/A
Altimeter Setting: 30 inches Hg
Temperature/Dew Point: 18°C / 5°C
Precipitation and Obscuration: No Obscuration; No Precipitation
Departure Point: Bemidgi, MN (BJI)
Type of Flight Plan Filed: None
Destination: Bemidgi, MN (BJI)
Type of Clearance: None
Departure Time: 1844 CDT
Type of Airspace: Class E

Airport Information

Airport: BEMIDJI RGNL (BJI)
Runway Surface Type: Asphalt
Airport Elevation: 1391 ft
Runway Surface Condition: Dry
Runway Used: 13
IFR Approach: None
Runway Length/Width: 7004 ft / 150 ft
VFR Approach/Landing: Full Stop; Traffic Pattern 

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: 47.510833, -94.934722 (est)

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