Thursday, May 12, 2016

Beech B100 King Air, N86TR, registered to and operated by Dexter Air LLC: Accident occurred May 10, 2016 at Dexter Municipal Airport (KDXE), Stoddard 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; St. Ann, 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/N86TR

Aviation Accident Final Report - National Transportation Safety Board

Location: Dexter, MO
Accident Number: CEN16LA187
Date & Time: 05/10/2016, 1730 CDT
Registration: N86TR
Aircraft: BEECH B100
Aircraft Damage: Substantial
Defining Event: Collision during takeoff/land
Injuries: 4 None
Flight Conducted Under:  Part 91: General Aviation - Instructional
Analysis

The commercial pilot was seated in the left seat and conducting a familiarization flight in the airplane. After completing airwork, he returned to the airport and conducted a circling approach, then entered the airport traffic pattern. The right seat pilot read the before landing checklist, and the pilot performed the items accordingly. He stated that, after extending the landing gear, he noted three green lights, indicating that the landing gear were extended and locked. Upon touchdown, the right main landing gear collapsed. The airplane veered off the runway and into a grass area.

Postaccident examination of the airplane revealed that the right main landing gear actuator assembly had numerous bent parts and was broken out of its mounting structure. The rigging for the landing gear system could not be checked, nor could functional gear swing test be performed due to damage sustained in the accident. No further testing was conducted. The reason for the landing gear collapse could not be determined.

Probable Cause and Findings

The National Transportation Safety Board determines the probable cause(s) of this accident to be: 
A collapse of the right main landing gear for reasons that could not be determined because of the damage to the landing gear system.

Findings

Aircraft
Main landing gear - Not specified (Cause)

Factual Information 

On May 10, 2016, at 1730 central daylight time, a Beech B100, N86TR, impacted runway 18 when the right main landing gear collapsed during landing at Dexter Municipal Airport (DXE), Dexter, Missouri. The airplane sustained substantial damage. The pilot, flight instructor, and two passengers were uninjured. The airplane was operated by Dexter Air LLC under 14 Code of Federal Regulations Part 91 as an instructional flight that was not operating on a flight plan. Visual meteorological conditions prevailed for the flight that last departed from Jonesboro Municipal Airport, Jonesboro, Arkansas at 1650 and was destined to DXE.

The pilot stated that the purpose of the flight was a Beechcraft B100 initial training flight with a second pilot who occupied the right pilot seat. According to the Federal Aviation Administration inspector, the flight instructor was in a non-seated position between both pilots.

The left seat pilot stated that they flew about 3 hours and had taken turns performing turns, stalls, slow flight and approaches. He stated that the accident landing was the third landing of the day that he performed. He said that during the left downwind approach for landing on runway 18, he performed the airplane checklist items that the flight instructor read to him. The left seat pilot said that the landing gear extended, and the three landing gear position indicator lights illuminated green. The left seat pilot said that during touchdown, the right side of the airplane descended lower than the left side and then the right main landing gear collapsed. The airplane veered off and into a grass area adjacent to the runway.

The aircraft came to rest approximately 2,518 feet from runway 18 touchdown end and 100 feet west of the runway edge in a field of grass. The right hand main gear was collapsed, right hand prop blades were bent and the right wing leading edge and tip was damaged. Evidence of fuel leakage was noted surrounding the right wing in the grass. The wing top skin outboard of the engine nacelle displayed evidence of wrinkling.

Post-accident examination revealed the bottom right wing skin to the integral fuel tank was torn resulting in an approximate five by three inch hole. The right main gear actuator assembly exhibited numerous bent parts and was broken out of its mounting structure. The inboard top actuator mounting structure was torn away from the airframe. The right nacelle fuel tank bulkhead was ruptured with the top of the gear actuator resting inside the tank area. The top wing skin wrinkling was not as evident post recovery but still shows signs of damage. Puncture damage to the fuselage pressure vessel was noted in 5 places below the copilot side window and a two-inch crack or tear was found on the belly skin approximately centered between the main gear legs.

The rigging for the landing gear system could not be checked nor could functional gear swing test be performed due to damage incurred to the system from the accident. 

History of Flight

Landing-flare/touchdown
Landing gear collapse

Landing-landing roll
Collision during takeoff/land (Defining event) 

Pilot Information

Certificate: Commercial
Age: 44, Male
Airplane Rating(s): Multi-engine Land; Single-engine Land
Seat Occupied: Left
Other Aircraft Rating(s): None
Restraint Used: Lap Only
Instrument Rating(s): Airplane
Second Pilot Present: Yes
Instructor Rating(s): None
Toxicology Performed: No
Medical Certification: Class 2 With Waivers/Limitations
Last FAA Medical Exam: 07/20/2015
Occupational Pilot: Yes
Last Flight Review or Equivalent:
Flight Time:  1333 hours (Total, all aircraft), 16 hours (Total, this make and model), 1333 hours (Pilot In Command, all aircraft), 51 hours (Last 90 days, all aircraft), 19 hours (Last 30 days, all aircraft), 3 hours (Last 24 hours, all aircraft) 

Pilot Information

Certificate: Commercial
Age: 79, Male
Airplane Rating(s): Multi-engine Land; Single-engine Land
Seat Occupied: Right
Other Aircraft Rating(s): None
Restraint Used: Lap Only
Instrument Rating(s): Airplane
Second Pilot Present:Yes 
Instructor Rating(s):  Airplane Multi-engine; Airplane Single-engine; Instrument Airplane
Toxicology Performed:No 
Medical Certification: Class 2 With Waivers/Limitations
Last FAA Medical Exam: 11/24/2015
Occupational Pilot:Yes 
Last Flight Review or Equivalent:
Flight Time:

Flight Instructor Information

Certificate:Airline Transport; Commercial 
Age:85, Male 
Airplane Rating(s): Multi-engine Land; Single-engine Land; Single-engine Sea
Seat Occupied: Center
Other Aircraft Rating(s):
Restraint Used:
Instrument Rating(s):
Second Pilot Present:  Yes
Instructor Rating(s):
Toxicology Performed: No
Medical Certification: Class 2 With Waivers/Limitations
Last FAA Medical Exam: 07/30/2016
Occupational Pilot: Yes
Last Flight Review or Equivalent:
Flight Time: 

Aircraft and Owner/Operator Information

Aircraft Manufacturer: BEECH
Registration: N86TR
Model/Series: B100
Aircraft Category: Airplane
Year of Manufacture: 1977
Amateur Built: No
Airworthiness Certificate: Normal
Serial Number: BE-22
Landing Gear Type: Retractable - Tricycle
Seats: 9
Date/Type of Last Inspection: 04/25/2016, Continuous Airworthiness
Certified Max Gross Wt.: 1180 lbs
Time Since Last Inspection:
Engines: 2 Turbo Prop
Airframe Total Time: 17777 Hours as of last inspection
Engine Manufacturer: Garrett
ELT: Installed, not activated
Engine Model/Series:  TPE 331-6-251
Registered Owner: Dexter Air LLC
Rated Power: 715 hp
Operator: Dexter Air LLC
Operating Certificate(s) Held: None

Meteorological Information and Flight Plan

Conditions at Accident Site: Visual Conditions
Condition of Light: Day
Observation Facility, Elevation: POF, 331 ft msl
Observation Time: 1653 CDT
Distance from Accident Site: 18 Nautical Miles
Direction from Accident Site: 270°
Lowest Cloud Condition: Few / 3000 ft agl
Temperature/Dew Point: 27°C / 20°C
Lowest Ceiling: None
Visibility:  9 Miles
Wind Speed/Gusts, Direction: 12 knots, 210°
Visibility (RVR):
Altimeter Setting:
Visibility (RVV):
Precipitation and Obscuration: No Obscuration; No Precipitation
Departure Point: Jonesboro, MO (JBR)
Type of Flight Plan Filed: None
Destination: Dexter, MO
Type of Clearance: None
Departure Time: 1650 CDT
Type of Airspace:

Airport Information

Airport: Dexter Municipal Airport (DXE)
Runway Surface Type: Asphalt
Airport Elevation: 304 ft
Runway Surface Condition: Dry
Runway Used: 18
IFR Approach:  None
Runway Length/Width: 5000 ft / 100 ft
VFR Approach/Landing: Traffic Pattern

Wreckage and Impact Information

Crew Injuries: 2 None
Aircraft Damage: Substantial
Passenger Injuries: 2 None
Aircraft Fire: None
Ground Injuries: N/A
Aircraft Explosion: None
Total Injuries: 4 None
Latitude, Longitude:  36.775556, -89.941111 (est)

 NTSB Identification: CEN16LA187
14 CFR Part 91: General Aviation
Accident occurred Tuesday, May 10, 2016 in Dexter, MO
Aircraft: BEECH B100, registration: N86TR
Injuries: 4 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 May 10, 2016, at 1730 central daylight time, a Beech B100, N86TR, impacted runway 18 when the right main landing gear collapsed during landing at Dexter Municipal Airport (DXE), Dexter, Missouri. The airplane sustained substantial damage. The pilot, flight instructor, and two passengers were uninjured. The airplane was operated by Dexter Air LLC under 14 Code of Federal Regulations as an instructional flight that was not operating on a flight plan. Visual meteorological conditions prevailed for the flight that last departed from Jonesboro Municipal Airport, Jonesboro, Arkansas at 1650 and was destined to DXE.

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