# NTSB CHI00LA250: Bell 206B, N7JR, Marengo, IL, August 4, 2000 - Type: NTSB accident investigation - Classification: Accident · Serious injuries · Limited investigation · Final report - Date: August 4, 2000, 17:15 local (22:15 UTC) - Place: Marengo, IL - Coordinates: 42.239833, -88.600456 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=42.2398&lon=-88.6005&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Highest injury: Serious injuries - Injuries: 1 serious - Status: Completed, report October 9, 2001 - Report: Approved by Office Director - NTSB case key (mKey): 49947 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI00LA250 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/49947/pdf - Page: https://openairdocs.org/ntsb/CHI00LA250 ## Probable cause the simulated autorotation performed by the pilot at too low an altitude and airspeed. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - In flight collision with terrain/water, landing - autorotation - performed, pilot in command (cause) - altitude - low, pilot in command (contributing factor) - airspeed - low, pilot in command (contributing factor) ## Analysis The helicopter impacted terrain during a simulated autorotation. The pilot reported that he began the autorotation at a low altitude and low airspeed. ## Factual narrative On August 4, 2000, at 1715 central daylight time, a Bell 206B, N7JR, was substantially damaged on impact with terrain during a practice emergency autorotation from an altitude of 30-40 feet agl at a private heliport near Marengo, Illinois. Visual meteorological condition prevailed at the time of the accident. The 14 CFR Part 91 personal flight was not operating on a flight plan. The pilot sustained serious injuries. The local flight originated from the private heliport at 1600. In a written statement, the pilot reported the following,: "The flight originated at IL 68 RLA, Barrington, IL, Friday, August 4, 2000, at approximately 1600 local time." "I flew to Wind Rose (Krause) RLA, located just SW of Routes 23 and 90 in Marengo, IL. At this location is a 2900' x 300' grass airstrip. I am the owner of both RLA's. "I flew to Marengo to practice auto rotations from flight in preparation for recurrent training, scheduled with an instructor the next day." "I began the first auto rotation at 1500' AGL and recovered at approximately 50' with an engine recovery. The second auto rotation was the same as the first." "The third auto rotation was begun at 500' AGL keeping the two needles close together with a forward arispeed of 60 mph. The auto rotation proceeded normally until flareout and recovery of the flareout at 50', at which time the needles split and I descended at a rapid rate to the ground. The helicopter came to rest in a flat postion with the landing skids splayed but level and upright. "Weather conditions were good: Wind 0; Temperature 85 F; Ceiling unlimited; Visibility 10 miles." The pilot's safety recommendation was, "Begin auto rotation from a higher altitude". According to a statement by a Federal Aviation Administration Inspector, "...[The pilot] stated that he had completed two autos from approximately 1500 AGL with power recovery without incident. [The pilot] then stated that he did the next auto at a LOW altitude. He would not say what that altitude was. He did say the helicopter was at a near zero airspeed when he initiated it." ## Aircraft - Registration: N7JR (not matched to a registry record) - Reported make and model: Bell 206B - Category: Helicopter - Serial number: 1131 - Airframe hours: 1637 - Engines: Allison 250-C20 400 horsepower turbo shaft - Damage: Substantial damage - Flight: Personal, Part 91 - Registered owner: Rose Packing Incorporated - Airworthiness certificate: Standard, Normal - Last inspection: Annual, October 8, 1999, 25 hours before - Departed: PVT, BARRINGTON, IL - Destination: PVT - Airport: PVT, Windrose ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 73; commercial; airplane ratings: multi-engine land, single-engine sea, single-engine land, multi-engine sea; instrument ratings: airplane; medical: class 2, valid medical--w/ waivers/lim; seat: right; flight hours: 10,200 total, 1,200 in this make and model, 9,760 as pilot in command, 50 in the last 90 days, 15 in the last 30 days, 1 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: variable at 4 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 169 °F, dew point 127 °F - Altimeter: 30.00 inHg - Observed at: RFD, 20 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 20000804014109A](https://openairdocs.org/incident/20000804014109A), Aug 4, 2000: Bell 206B, Manrengo, IL, No damage. (-23) While practicing emergency manuevers in preparation for a checkride. Rose initiated two simulated engine failures at approx. 1500 AGL with power… 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.