Tuesday, July 25, 2017

Stinson 108-1 Voyager, N8954K, registered to and operated by a private individual: Accident occurred July 21, 2017 at Lee's Summit Municipal Airport (KLXT), Jackson County, Missouri

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

Additional Participating Entity:

Federal Aviation Administration / Flight Standards District Office; Kansas City, Missouri

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

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


http://registry.faa.gov/N8954K

Location: Lee's Summit, MO
Accident Number: CEN17LA280
Date & Time: 07/21/2017, 1100 CDT
Registration: N8954K
Aircraft: STINSON 108
Aircraft Damage: Substantial
Defining Event: Sys/Comp malf/fail (non-power)
Injuries: 2 None
Flight Conducted Under:  Part 91: General Aviation - Personal 

Analysis

During a cross-country flight, the airline transport pilot chose an en route stop to refuel. During the landing roll, the airplane started to drift left, so the pilot applied the right brake and rudder to correct the turn; however, the brake "went to the floor." The pilot was unable to correct the turn, and the airplane continued off the edge of the runway.

An examination of the braking system confirmed that the right brake was not functional, likely due to a failed seal. 

Probable Cause and Findings

The National Transportation Safety Board determines the probable cause(s) of this accident to be:
The pilot's loss of directional control during landing due to the failure of the right brake seal. 

Findings

Aircraft
Brake - Malfunction (Cause)


Factual Information

On July 21, 2017, about 1100 central daylight time, a Stinson 108 airplane, N8954K, departed the runway surface while landing at the Lee's Summit Municipal Airport (KLXT), Lee's Summit, Missouri. The pilot and passenger were not injured, and the airplane was substantially damaged during the landing. The airplane was registered to and operated by a private individual under the provisions of 14 Code of Federal Regulations Part 91 as a cross-country flight. Visual meteorological conditions prevailed at the time. The local flight departed Newton, Kansas, about 0900.

The pilot reported that he planned to stop at KLXT to refuel and elected to land on runway 29. After touchdown, the airplane started to drift left, so he applied the right brake and rudder; however, the brake "went to the floor." The pilot was unable to correct the turn and the airplane continued off the edge of the runway. The airplane came to rest in an up-right position.

An examination of the airplane by the responding Federal Aviation Administration (FAA) inspector noted that the propeller was bent, the airplane's right landing gear had collapsed, and there was substantial damage to the wing spar and fuselage. The examination also confirmed that the right brake was not functional. The exam noted that the brake system malfunction was likely due to a failure of a seal. 

Pilot Information

Certificate: Airline Transport; Flight Instructor
Age: 59
Airplane Rating(s): Multi-engine Land; Single-engine Land
Seat Occupied: Left
Other Aircraft Rating(s): None
Restraint Used: 3-point
Instrument Rating(s): Airplane
Second Pilot Present:
Instructor Rating(s): Airplane Single-engine
Toxicology Performed: No
Medical Certification: Class 1 With Waivers/Limitations
Last FAA Medical Exam: 07/13/2017
Occupational Pilot: Yes
Last Flight Review or Equivalent: 04/20/2017
Flight Time:  9374 hours (Total, all aircraft), 68.6 hours (Total, this make and model), 7969 hours (Pilot In Command, all aircraft) 

Aircraft and Owner/Operator Information

Aircraft Manufacturer: STINSON
Registration: N8954K
Model/Series: 108
Aircraft Category: Airplane
Year of Manufacture: 1947
Amateur Built: No
Airworthiness Certificate: Normal
Serial Number: 108-1954
Landing Gear Type: Tailwheel
Seats:
Date/Type of Last Inspection: 04/07/2017, Annual
Certified Max Gross Wt.: 2150 lbs
Time Since Last Inspection:
Engines: 1 Reciprocating
Airframe Total Time:
Engine Manufacturer: FRANKLIN
ELT: Installed, not activated
Engine Model/Series: 6A4-165-B3
Registered Owner: On file
Rated Power: 165 hp
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:
Observation Time: 1053 CDT
Distance from Accident Site:
Direction from Accident Site:
Lowest Cloud Condition: Clear
Temperature/Dew Point: 33°C / 23°C
Lowest Ceiling:
Visibility: 10 Miles
Wind Speed/Gusts, Direction: 12 knots, 212°
Visibility (RVR):
Altimeter Setting: 29.96 inches Hg
Visibility (RVV):
Precipitation and Obscuration: No Precipitation
Departure Point: Newton, KS (KEWK)
Type of Flight Plan Filed: VFR
Destination: Lee's Summit, MO (KLXT)
Type of Clearance: VFR Flight Following
Departure Time: 0900 CDT
Type of Airspace:

Airport Information

Airport: Lee's Summit (KLXT)
Runway Surface Type: Asphalt
Airport Elevation: 1004 ft
Runway Surface Condition: Dry
Runway Used: 29
IFR Approach: None
Runway Length/Width: 4000 ft / 75 ft
VFR Approach/Landing: Full Stop

Wreckage and Impact Information

Crew Injuries: 1 None
Aircraft Damage: Substantial
Passenger Injuries: 1 None
Aircraft Fire: None
Ground Injuries: N/A
Aircraft Explosion: None
Total Injuries: 2 None
Latitude, Longitude:  38.960556, -94.374722

NTSB Identification: CEN17LA280
14 CFR Part 91: General Aviation
Accident occurred Friday, July 21, 2017 in Lee's Summit, MO
Aircraft: STINSON 108 1, registration: N8954K
Injuries: 2 Uninjured.

This is preliminary information, subject to change, and may contain errors. Any errors in this report will be corrected when the final report has been completed. NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

On July 21, 2017, about 1100 central daylight time, a Stinson 108 airplane, N8954K departed the runway surface while landing at Lee's Summit Municipal Airport (KLXT), Lee's Summit, Missouri. The pilot and passenger were not injured and the airplane was substantially damaged during the landing. The airplane was registered to and operated by a private individual under the provisions of 14 Code of Federal Regulations Part 91 as a cross-country flight. Visual meteorological conditions prevailed at the time. 

The pilot reported to the Federal Aviation Administration (FAA) inspector, that he was landing on runway 29, and the airplane started to drift left, so he applied the right brake; however, the brake did not respond. The airplane continued off the edge of the runway, and the right gear collapsed. An initial inspection of the airplane noted substantial damage to the right-wing spar and fuselage. 

The wreckage was retained for further examination.

No comments: