# NTSB DFW05CA149: Bell 206L-1, N2761X, Moulton Cove, LA, June 8, 2005 - Type: NTSB accident investigation - Classification: Accident · No injuries · Data collection · Final report - Date: June 8, 2005, 06:30 local (11:30 UTC) - Place: Moulton Cove, LA - Coordinates: 30.183332, -92 - Nearby events: https://openairdocs.org/map.md?lat=30.1833&lon=-92.0000&mi=10 - Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 4 uninjured - Status: Completed, report September 13, 2005 - Report: Approved by Office Director - Parties: Baton Rouge, Louisiana - NTSB case key (mKey): 61642 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DFW05CA149 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/61642/pdf - Page: https://openairdocs.org/ntsb/DFW05CA149 ## Probable cause The loss of engine power due to foreign object ingestion into the compressor. A contributing factor was the lack of suitable terrain (swampy) for the forced landing. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Loss of engine power(partial) - nonmechanical, takeoff - initial climb - misc,engine compressor stall/surge - foreign object damage (cause) - compressor assembly - foreign material/substance - Forced landing, emergency landing after takeoff - autorotation - performed, pilot in command - In flight collision with terrain/water, emergency landing - terrain condition - none suitable (contributing factor) - terrain condition - swampy ## Analysis After take off from a remote helipad, during initial climb, the 5,000- hour helicopter pilot reported that approximately 150-200 feet agl, with 80-85% torque, he heard the engine make "popping noises" and the helicopter yawed left. The engine immediately lost power associated with rapid decay of N1 and rotor rpm. Subsequently, the pilot executed an autorotation to a swampy area adjacent to a tree line. The pilot and passengers exited the helicopter after the landing with no injuries. Examination of the helicopter revealed evidence that the main rotor blade(s) had contacted and severed the tail boom upon touchdown. Further examination of the engine revealed evidence of foreign object ingestion. Remnants and the smell of an amphibian were present in the engine bleed manifold port and intake, and impact evidence was noted on the compressor front support. The operator reported that the helicopter had remained overnight at the remote helipad the night prior to the flight, which was the first of the day for the helicopter. The operator further stated that there had been reports in the past about ingestion of "green frogs" which are common to the area. ## Factual narrative On June 8, 2005, approximately 0630 central daylight time, a single-engine Bell 206L-1 helicopter, N2761X, registered to American Helicopters of Angleton, Texas, and operated by Omni Energy Services of Carencrow, Louisiana, was substantially damaged during a forced autorotative landing into swampy terrain following a loss of engine power during initial climb after take off from a company helipad near Mouton Cove, Louisiana. The commercial pilot and 3 passengers were not injured. Visual meteorological conditions prevailed throughout the area and a company flight plan was filed for the Title 14 Code of Federal Regulations Part 135 on-demand domestic air taxi flight. The flight was destined for an offshore platform in the Gulf of Mexico. The 6,020-hour pilot reported that while on initial takeoff climb, when the helicopter was climbing through approximately 150 to 200 feet above the ground, with the engine operating at 80 to 85% torque, he heard the engine make "popping noises" and the nose of the helicopter yawed to the left. The engine immediately lost power associated with rapid decay of N1 and rotor rpm. Subsequently, the pilot executed an autorotation to a swampy area adjacent to a tree line. The pilot and passengers exited the helicopter after the landing with no injuries. Examination of the helicopter by an FAA inspector revealed that the main rotor blade(s) had contacted and severed the tail boom during the flare and touchdown phase of the autorotaion. Further examination of the Rolls-Royce 250-C30P engine revealed evidence of foreign object ingestion. Remnants and the smell of an amphibian were present in the engine bleed manifold port and intake, and impact evidence was noted on the compressor front support. The operator reported that the helicopter had remained overnight at the remote helibase the night prior to the flight, which was the first of the day for the helicopter. The operator further stated that there had been reports in the past about ingestion of "green frogs" which are common to that region of the state. ## Aircraft - Registration: N2761X (not matched to a registry record) - Reported make and model: Bell 206L-1 - Category: Helicopter - Serial number: 45283 - Engines: Rolls-Royce 250-C30P 650 horsepower turbo shaft - Damage: Substantial damage - Flight: Part 135 - Registered owner: Omni Energy Services - Airworthiness certificate: Standard, Normal - Departed: NONE, Moulton Cove, LA - Destination: NONE, WC 280 GOM, GM - Flight plan: Company VFR ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 55; injuries: none; commercial; airplane ratings: multi-engine land, single-engine land; instrument ratings: helicopter; medical: class 2; flight hours: 6,020 total, 115 in this make and model ## Weather - Conditions: Visual (VMC), Day - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 73 °F ## FAA reports on this event (1) The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs). - [Accident 20050608011309A](https://openairdocs.org/incident/20050608011309A), Jun 8, 2005: Bell 206L1, Mouton Cove, LA, Substantial damage. (-23) Departed Mouton Cove at 0630 with 3 pax from pmi-to accomplish crew change at wc 280. Departed mtc on approximately northeast heading. While at… From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.