# NTSB MIA95LA205: Bell 206B, N193JB, Immokalee, FL, August 15, 1995 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: August 15, 1995, 17:00 local (21:00 UTC) - Place: Immokalee, FL - Location: 26.4240° N, 81.4216° W: Placed by OpenAirDocs: center of Immokalee, FL, within about 6 miles (OpenAirDocs) - Nearby events: https://openairdocs.org/map.md?lat=26.4240&lon=-81.4216&mi=10 - Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 2 uninjured - Status: Completed, report October 13, 1995 - Report: Approved by Office Director - NTSB case key (mKey): 37816 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA95LA205 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/37816/pdf - Page: https://openairdocs.org/ntsb/MIA95LA205 ## Probable cause The pilot's improper use of the cyclic during a power-on autorotative landing (low flare), resulting in the ventral fin colliding with the ground. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Hard landing, descent - precautionary landing - performed, pilot in command - cyclic - improper use of, pilot in command (cause) - flare - low, pilot in command (cause) ## Analysis The pilot stated he was in cruise flight at 500 feet agl when he observed the engine oil temperature gage just short of the red line. A short time later he heard a noise described as a 'pop'. He entered a power-on autorotaton to make a precautionary landing straight ahead to an open area, and planned to terminate at a hover. The engine out warning light was not illuminated, the engine out audio did not activate, and the remaining engine instruments appeared to be normal. The pilot initiated a deceleration at 50 to 60 feet, applied initial collective pitch at about 15 feet while increasing power and leveling the helicopter. The landing area was unsuitable and the N2 was observed decreasing. He applied aft cyclic, and the ventral fin collided with the ground. The helicopter rocked forward and the main rotor blades collided with the tailboom. Examination of the helicopter revealed a red shop rag was caught in the oil cooler fan. A rigging check was conducted and no deficiencies were noted. The engine was removed and placed in an engine test cell. The engine started, run at ground idle, and accelerated to takeoff power. ## Factual narrative On August 15, 1995, a Bell 206B, N193JB, registered to Huebner Aviation Inc., operating as a 14 CFR Part 91 personal flight, made a power-on authoritative precautionary landing to an open area after hearing a "pop" while in cruise flight. The helicopter sustained substantial damage. Visual meteorological conditions prevailed and no flight plan was filed. The commercial pilot and one passenger reported no injuries. The flight originated from Opa Locka, Florida, about 45 minutes before the accident. The pilot stated he was in cruise flight at 500 feet agl, when he observed the engine oil temperature gauge just short of the red line. A short time later, he heard a noise described as a "pop". He entered a power-on autorotation straight ahead to an open area, and planned to terminate the autorotation to a hover. The engine out warning light was not illuminated, the engine out audio did not activate, and the remaining engine instruments appeared to be normal. At 50 to 60 feet he initiated a deceleration and applied initial collective pitch at about 15 feet while increasing power and leveling the helicopter. He noticed the landing area was unsuitable, and observed the N2 decreasing. He applied aft cyclic, the helicopter collided with the ground ventral fin first, rocked forward and the main rotor blades collided with the tailboom before the helicopter came to a complete stop. Examination of the engine compartment by recovery personnel at the crash site revealed a shop rag was observed wrapped around the tail rotor driveshaft section on the inside of the oil cooler. There was no damage to the oil cooler, tailrotor driveshaft section and the hanger bearing. Examination of the helicopter was conducted by Allison Engine Company in the presence of the FAA. There was no evidence of a precrash mechanical failure of the airframe or flight control assembly. A 1 foot x 1.5 foot section of plexiglas from the upper left hand portion of the left wind screen was broken out. The windscreen retaining flange along the left-hand side evidenced areas of bending/flexing where the plexiglas had worked back and forth against the metal. No evidence of a bird strike was observed. A rigging check was conducted, and N1 and N2 continuity was established. No deficiencies were noted. The engine was removed and transported to an authorized repair facility. The engine was placed in an engine test cell. The engine was started, run at idle power, and accelerated to takeoff power level. (For additional information see Allison Accident Investigation Report). The helicopter wreckage was released to Mr. Steve Smalley, President, Air Sea and Recovery on August 21, 1995. The engine assembly and accessories was released to Mr. Smalley on August 23, 1995. The helicopter logbooks and pilot logbook were released to Comet Courier Service as directed by Mandina, Ginsberg and Toledo, P.A., Miami, Florida, on August 25, 1995. ## Aircraft - Registration: [N193JB](https://openairdocs.org/deregistered/N193JB-2001-07-03), registration cancelled 2001-07-03, S/N 4018 (OpenAirDocs) - Reported make and model: BELL 206B - Registry model: [Bell 206B](https://openairdocs.org/model/bell-206b) (registry code 1181511) (OpenAirDocs) - Category: Helicopter - Serial number: 4018 - Airframe hours: 20249 - Engines: ALLISON 250-C20J 420 horsepower turbo shaft - Damage: Substantial damage - Flight: Personal, Part 91 - Registered owner: Huebner Aviation Inc. - Airworthiness certificate: Standard, Normal - Last inspection: Annual, June 1, 1995, 64 hours before - Departed: OPF, OPA LOCKA, FL - Destination: FMY, FORT MYERS, FL ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 41; commercial; medical: class 2, valid medical--w/ waivers/lim; seat: right; flight hours: 5,387 total, 300 in this make and model, 5,104 as pilot in command, 62 in the last 90 days, 29 in the last 30 days, 2 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 60° at 7 knots - Visibility: 5 statute miles - Lowest ceiling: 4,500 ft broken - Temperature: 97 °F, dew point 75 °F - Altimeter: 29.00 inHg - Observed at: RSW, 15 nm away ## 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 19950815028499A](https://openairdocs.org/incident/19950815028499A), Aug 15, 1995: Bell 206B, Immokalee, FL, Substantial damage. High oil temp. Loud pop. Autorotated. Rocked landing. Chopped tail. Shop rag wrapped on tail shaft. Blocked cooler. 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.