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CEN13LA155

2013-02-06 · Tulsa, Oklahoma, United States · None · 1 aircraft · Status: Completed

Airport KTUL

Aircraft involved

Probable cause & findings

The line technician’s failure to remove the refueling mat from the helicopter fuselage following servicing, which resulted in the mat striking the tail rotor in flight, and the pilot’s inadequate preflight inspection.

Factual narrative

On February 6, 2013, about 1750 central standard time, a Robinson R44 II helicopter, N276RC, executed an autorotation landing after a fueling mat struck the tail rotor at the Tulsa International Airport (TUL), Tulsa, Oklahoma. The commercial pilot was not injured. The tail rotor blades received substantial damage. The airplane was registered to and operated by Crumpton Aviation LLC under the provisions of 14 Code of Federal Regulations Part 91as a business flight. Night visual meteorological conditions prevailed for the flight and no flight plan was filed. The flight was originating at the time of the accident and was destined for Richard Lloyd Jones Jr. Airport (KRVS), Tulsa, Oklahoma. After fuel servicing by fixed base operator personnel, the pilot lifted off from the ramp area and began a turn to the southwest. Climbing through 150 feet above ground level, the pilot reported a loud bang followed by loss of tail rotor effectiveness. The pilot executed an autorotation landing on a concrete ramp at the airport. During examination of the accident site, two fractured tail rotor blades and a damaged fueling mat were found on a path between the initial liftoff point of the helicopter and its landing location. Examination of the tail rotor blades indicated that damage was consistent with contact by the fueling mat. After fuel servicing, the line technician did not remove the rubber fueling mat from the fuselage. The pilot did not observe the mat on the fuselage before taking off, most likely due to his inadequate preflight inspection of the helicopter. While climbing through 150 feet above ground level, the fueling mat departed the fuselage and impacted the tail rotor, which resulted in the fracture of both tail rotor blades and a loss of tail rotor control. The pilot executed an autorotation landing and landed without further incident. Source: NTSB Aviation Accident Database Retrieved: 2026-02-12

NTSB Findings

FAA avdata. C = Cause, F = Factor.

  • C Personnel issues-Task performance-Inspection-Preflight inspection-Pilot - C
  • C Aircraft-Aircraft propeller/rotor-Tail rotor-Tail rotor blade-Damaged/degraded - C
  • C Personnel issues-Action/decision-Action-Forgotten action/omission-Ground crew - C

Verbatim from NTSB's published report. Source file NTSB_2013_CEN13LA155.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.

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Related research

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