Thursday, January 18, 2018

Waco YMF, N17XK, registered to and operated by Adventure Airtours LLC: Accident occurred July 04, 2017 at Butler County Regional Airport (KHAO), Hamilton, Ohio

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

Additional Participating Entity:
Federal Aviation Administration / Flight Standards District Office; Cincinnati, Ohio

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/N17XK

Analysis 

The commercial pilot and two passengers had completed a local flight. After a routine touchdown and landing roll, the pilot applied the brakes to initiate a right turn onto a taxiway. The pilot reported that the right brake "grabbed immediately," causing the airplane to ground loop. A postaccident examination and disassembly of the brake system revealed no mechanical anomalies that would have precluded normal operation. The reason for the reported brake malfunction could not be determined. 

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 after landing for reasons that could not be determined because an examination of the airplane did not reveal any anomalies that would have precluded normal operation.

Findings

Aircraft
Directional control - Not attained/maintained (Cause)

Personnel issues
Aircraft control - Pilot (Cause)

Not determined
Not determined - Unknown/Not determined (Cause)

Factual Information 

On July 4, 2017, about 1900 eastern daylight time, a Waco YMF airplane, N17XK, experienced a gear collapse after landing at the Butler County Regional Airport-Hogan Field, Hamilton, Ohio. The pilot and two passengers were not injured, and the airplane was substantially damage. The airplane was registered to and operated by Adventure Airtours, LLC, under the provisions of 14 Code of Federal Regulations Part 91 as a local sightseeing flight. Visual meteorological conditions prevailed at the time.

The pilot reported that he just completed a local flight and was landing on runway 11. After a routine touchdown and roll out, he applied the brakes to initiate a right turn onto a taxiway. The pilot added that the right brake "grabbed immediately", causing the airplane to turn clockwise to the left. The pilot also added that the tailwheel was down and in the locked position. The left wing struck the ground and the left landing gear collapsed; the airplane came to a stop on the runway.

An inspection of the airplane by the responding Federal Aviation Administration inspector noted damage to the left main landing gear and substantial damage to the left wing spar.

The airplane was recovered and transported to the manufacturer's facility for repair. During disassembly of the landing gear and braking system, the manufacturer did not find any evidence of a failure in the braking system. 

History of Flight

Landing-landing roll
Loss of control on ground (Defining event)

Landing gear collapse

Location: Hamilton, OH
Accident Number: CEN17LA322
Date & Time: 07/04/2017, 1900 EST
Registration: N17XK
Aircraft: CLASSIC AIRCRAFT CORP WACO YMF
Aircraft Damage: Substantial
Defining Event: Landing gear collapse
Injuries: 3 None
Flight Conducted Under:  Part 91: General Aviation - Business - Sightseeing 

On July 4, 2017, about 1900 eastern daylight time, a Waco YMF airplane, N17XK, experienced a gear collapse after landing at the Butler County Regional Airport-Hogan Field, Hamilton, Ohio. The pilot and two passengers were not injured, and the airplane was substantially damage. The airplane was registered to and operated by Adventure Airtours, LLC, under the provisions of 14 Code of Federal Regulations Part 91 as a local sightseeing flight. Visual meteorological conditions prevailed at the time.

The pilot reported that he just completed a local flight and was landing on runway 11. After a routine touchdown and roll out, he applied the brakes to initiate a right turn onto a taxiway. The pilot added that the right brake "grabbed immediately", causing the airplane to turn clockwise to the left. The pilot also added that the tailwheel was down and in the locked position. The left wing struck the ground and the left landing gear collapsed; the airplane came to a stop on the runway.

An inspection of the airplane by the responding Federal Aviation Administration inspector noted damage to the left main landing gear and substantial damage to the left wing spar.

The airplane was recovered and transported to the manufacturer's facility for repair. During disassembly of the landing gear and braking system, the manufacturer did not find any evidence of a failure in the braking system. 

Pilot Information

Certificate: Commercial
Age: 71
Airplane Rating(s): Single-engine Land
Seat Occupied: Rear
Other Aircraft Rating(s): None
Restraint Used: 3-point
Instrument Rating(s): Airplane
Second Pilot Present: No
Instructor Rating(s): None
Toxicology Performed: No
Medical Certification: Class 2 With Waivers/Limitations
Last FAA Medical Exam: 08/25/2016
Occupational Pilot: No
Last Flight Review or Equivalent: 06/29/2016
Flight Time:  1896.5 hours (Total, all aircraft), 48.5 hours (Total, this make and model), 2.5 hours (Last 90 days, all aircraft), 1 hours (Last 30 days, all aircraft) 

Aircraft and Owner/Operator Information

Aircraft Manufacturer: CLASSIC AIRCRAFT CORP
Registration: N17XK
Model/Series: WACO YMF NO SERIES
Aircraft Category: Airplane
Year of Manufacture:
Amateur Built: No
Airworthiness Certificate: Normal
Serial Number: F5C-048
Landing Gear Type: Tailwheel
Seats:
Date/Type of Last Inspection: 08/18/2016, Annual
Certified Max Gross Wt.:
Time Since Last Inspection: 
Engines: 1 Reciprocating
Airframe Total Time: 582.9 Hours at time of accident
Engine Manufacturer:
ELT: Installed, not activated
Engine Model/Series:
Registered Owner: On file
Rated Power:
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: KHAO
Observation Time: 1853 EST
Distance from Accident Site:
Direction from Accident Site:
Lowest Cloud Condition:
Temperature/Dew Point:  29°C / 21°C
Lowest Ceiling: Broken / 4900 ft agl
Visibility: 10 Miles
Wind Speed/Gusts, Direction: 4 knots, 20°
Visibility (RVR):
Altimeter Setting:  30.02 inches Hg
Visibility (RVV):
Precipitation and Obscuration: No Precipitation
Departure Point: Hamilton, OH (KHAO)
Type of Flight Plan Filed: None
Destination: Hamilton, OH (KHAO)
Type of Clearance: None
Departure Time:  EST
Type of Airspace: 

Airport Information

Airport: Butler County Regional Airport (KHAO)
Runway Surface Type: Asphalt
Airport Elevation: 633 ft
Runway Surface Condition: Dry
Runway Used: 11
IFR Approach: None
Runway Length/Width: 5500 ft / 80 ft
VFR Approach/Landing: Full Stop 

Wreckage and Impact Information

Crew Injuries: 1 None
Aircraft Damage: Substantial
Passenger Injuries: 2 None
Aircraft Fire: None
Ground Injuries: N/A
Aircraft Explosion: None
Total Injuries: 3 None
Latitude, Longitude: 39.363889, -84.525556

NTSB Identification: CEN17LA322
14 CFR Part 91: General Aviation
Accident occurred Tuesday, July 04, 2017 in Hamilton, OH
Aircraft: CLASSIC AIRCRAFT CORP WACO YMF, registration: N17XK
Injuries: 3 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 4, 2017, about 1900 eastern daylight time, a Waco YMF airplane, N17XK, experienced a gear collapse after landing at the Butler County Regional Airport-Hogan Field, Missouri. The pilot and two passengers were not injured and the airplane was substantially damaged during the landing. The airplane was registered to and operated by Adventure Airtours, LLC, under the provisions of 14 Code of Federal Regulations Part 91 as a local sightseeing flight. Visual meteorological conditions prevailed at the time. 

The pilot reported to the Federal Aviation Administration (FAA) inspector, that after landing, he applied the left and right brakes to initiate a right turn to the taxiway. The pilot added that the right brake "grabbed and locked", causing the airplane's tail to swing left. The left wing then struck the ground, and the airplane came to a stop.

An inspection of the airplane noted substantial damage to the left wing spar.

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