# NTSB CHI08CA164: Hughes 269B, N9357F, Cook, MN, June 15, 2008 - Type: NTSB accident investigation - Classification: Accident · Minor injuries · Data collection · Final report - Date: June 14, 2008, 20:22 local (Jun 15, 2008, 01:22 UTC) - Place: Cook, MN - Coordinates: 47.821666, -92.690551 - Nearby events: https://openairdocs.org/map.md?lat=47.8217&lon=-92.6906&mi=10 - Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping) - Defining event: [Enroute-cruise: Loss of control in flight](https://openairdocs.org/ntsb-events/240) - Highest injury: Minor injuries - Injuries: 1 minor, 2 uninjured - Status: Completed, report July 30, 2008 - Report: Approved by Office Director - Parties: Minneapolis, MN, FSDO - NTSB case key (mKey): 68319 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI08CA164 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/68319/pdf - Page: https://openairdocs.org/ntsb/CHI08CA164 ## Probable cause The pilot not maintaining tail rotor effectiveness while turning in cruise. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Rotorcraft flight control: tail rotor control system](https://openairdocs.org/ntsb-findings/01046720): Aircraft › Aircraft propeller/rotor · Incorrect use/operation (probable cause); cases with it: [Hughes 269B, 1 case](https://openairdocs.org/ntsb-findings/01046720/cases.md?model=4470502), [All aircraft, 13 cases](https://openairdocs.org/ntsb-findings/01046720/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Enroute-cruise: Loss of control in flight](https://openairdocs.org/ntsb-events/240) (defining event); cases with it: [Hughes 269B, 2 cases](https://openairdocs.org/ntsb-events/240/sequence.md?model=4470502), [All aircraft, 5,002 cases](https://openairdocs.org/ntsb-events/240/sequence.md) - [Landing: Roll over](https://openairdocs.org/ntsb-events/097); cases with it: [Hughes 269B, 2 cases](https://openairdocs.org/ntsb-events/097/sequence.md?model=4470502), [All aircraft, 261 cases](https://openairdocs.org/ntsb-events/097/sequence.md) ## Analysis The pilot stated that he was cruising east in a helicopter. He made a 180 degree turn to the right, flew west for about 40 seconds, and made a 180 degree turn to right. The pilot reported that he rolled out of the turn, but the helicopter continued to turn right. He said that he landed flat, and the spinning helicopter rolled onto its right side. The helicopter was examined after the accident, and no preimpact anomalies were detected. The pilot's safety recommendation was, "Watch your airspeed when turning right so that your tail can still maintain control." ## Factual narrative The pilot stated that he was cruising east bound in a helicopter. He made a 180 degree turn to the right, flew west for about 40 seconds, and made a 180 degree turn to right. The pilot reported that he rolled out of the turn and that the helicopter continued to turn right. He said that he landed "flat" and "with the spin the helicopter rolled onto its right side." The airplane was examined after the accident and no pre-impact anomalies were detected. The pilot's safety recommendation was, "Watch your airspeed when turning right so that your tail can still maintain control." ## Aircraft - Registration: [N9357F](https://openairdocs.org/deregistered/N9357F-2013-05-22), registration cancelled 2013-05-22, S/N 0044, built 1964 (OpenAirDocs) - Reported make and model: Hughes 269B - Registry model: [Hughes 269B](https://openairdocs.org/model/hughes-269b) (registry code 4470502) (OpenAirDocs) - Registry engine: [Lycoming I0360 series](https://openairdocs.org/engine/lycoming-i0360-series) (registry code 41515, reciprocating) (OpenAirDocs) - Category: Helicopter - Serial number: 0044 - Airframe hours: 4101 - Engines: Lycoming HIO-360 reciprocating - Damage: Substantial damage - Flight: Other work use, Part 91 - Registered owner: Adrenalin Airshows Inc - Airworthiness certificate: Standard, Normal - Last inspection: Annual, August 1, 2007 - Departed: Cook, MN ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 60; injuries: minor; private, commercial; airplane ratings: multi-engine land, single-engine land; medical: class 2, with waivers/limitations; flight hours: 7,650 total, 3,100 in this make and model ## Weather - Conditions: Visual (VMC), Day - Observed at: CKC ## 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 20080614838889A](https://openairdocs.org/incident/20080614838889A), Jun 14, 2008: Hughes 269B, Cook, MN, Substantial damage. (-23) Police officer observed the helicopter rotating in a tight circle and loosing elevation. Estimated altitude was 500 feet. The helicopter landed on the… ## Other investigations on N9357F (6) 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. - [NTSB MKC82FCD09](https://openairdocs.org/ntsb/MKC82FCD09), Jul 29, 1982: Hughes 269B (N9357F), Tipton, IA, substantial damage - [NTSB MKC81FCD34](https://openairdocs.org/ntsb/MKC81FCD34), Aug 13, 1981: Hughes 269B (N9357F), Marion, IA, substantial damage - [NTSB MKC77DCD37](https://openairdocs.org/ntsb/MKC77DCD37), Jun 29, 1977: Hughes 269B (N9357F), Hawkeye, IA, substantial damage - [NTSB MIA73FKQ31](https://openairdocs.org/ntsb/MIA73FKQ31), Jun 19, 1973: Hughes 269B (N9357F), Madison, MS, substantial damage - [NTSB OAK65A0060](https://openairdocs.org/ntsb/OAK65A0060), Mar 19, 1965: Hughes 269B (N9357F), Round Mt, CA, substantial damage - [NTSB UNK64X3436](https://openairdocs.org/ntsb/UNK64X3436), Aug 16, 1964: Hughes 269B (N9357F), Redding, CA, substantial damage 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.