# NTSB ERA16LA326: Hughes 269B, N269BS, Ozark, AL, September 22, 2016 - Type: NTSB accident investigation - Classification: Accident · Minor injuries · Limited investigation · Final report - Date: September 22, 2016, 16:30 local (21:30 UTC) - Place: Ozark, AL - Coordinates: 31.431943, -85.620552 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=31.4319&lon=-85.6206&mi=10 - Phase of flight: [Emergency descent](https://openairdocs.org/ntsb-phases/600) (OpenAirDocs' grouping) - Defining event: [Autorotation: Loss of engine power (total)](https://openairdocs.org/ntsb-events/341) - Highest injury: Minor injuries - Injuries: 2 minor - Status: Completed, report March 18, 2019 - Report: Approved by Office Director - NTSB office: Eastern Region Aviation - Parties: FAA/FSDO - NTSB case key (mKey): 94074 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ERA16LA326 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/94074/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=94074 - Page: https://openairdocs.org/ntsb/ERA16LA326 ## Probable cause A total loss of engine power for reasons that could not be determined following a successful postaccident engine run on the accident helicopter. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Not determined](https://openairdocs.org/ntsb-findings/05000000): Not determined › Not determined · Unknown/Not determined (probable cause); cases with it: [Hughes 269B, 2 cases](https://openairdocs.org/ntsb-findings/05000000/cases.md?model=4470502), [All aircraft, 2,247 cases](https://openairdocs.org/ntsb-findings/05000000/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Enroute-cruise: Simulated/training event](https://openairdocs.org/ntsb-events/600); cases with it: [Hughes 269B, 1 case](https://openairdocs.org/ntsb-events/600/sequence.md?model=4470502), [All aircraft, 173 cases](https://openairdocs.org/ntsb-events/600/sequence.md) - [Autorotation: Attempted remediation/recovery](https://openairdocs.org/ntsb-events/060); cases with it: [Hughes 269B, 2 cases](https://openairdocs.org/ntsb-events/060/sequence.md?model=4470502), [All aircraft, 1,422 cases](https://openairdocs.org/ntsb-events/060/sequence.md) - [Autorotation: Loss of engine power (total)](https://openairdocs.org/ntsb-events/341) (defining event); cases with it: [Hughes 269B, 1 case](https://openairdocs.org/ntsb-events/341/sequence.md?model=4470502), [All aircraft, 3,820 cases](https://openairdocs.org/ntsb-events/341/sequence.md) - [Landing: Hard landing](https://openairdocs.org/ntsb-events/092); cases with it: [Hughes 269B, 2 cases](https://openairdocs.org/ntsb-events/092/sequence.md?model=4470502), [All aircraft, 2,102 cases](https://openairdocs.org/ntsb-events/092/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 flight instructor stated that the helicopter was in cruise flight at 75 mph and 800 ft mean sea level when he announced "simulated engine failure" and reduced the throttle and collective. The student pilot responded to the simulated emergency by establishing an autorotation and cross-checking the instruments, which were all "normal" or "in the green." During recovery of the maneuver at 100 ft above ground level, the instructor noted the engine rpm was "zero," announced an actual engine failure, joined the student pilot on the flight controls, and completed the autorotation to the ground. At touchdown, the helicopter bounced on the right front skid and rolled onto its right side. The helicopter was recovered to the operator's facility, where an engine start was attempted on the airframe using the helicopter's battery and starter. The engine started immediately and ran smoothly without interruption until manually shut down. ## Factual narrative On September 22, 2016, at 1630 central daylight time, a Hughes 269B helicopter, N269BS, was substantially damaged during a forced landing following a loss of engine power near Ozark, Alabama. The flight instructor and student pilot sustained minor injuries. Visual meteorological conditions prevailed, and no flight plan was filed for the local instructional flight conducted under the provisions of Title 14 Code of Federal Regulations Part 91.The flight instructor and the student pilot each provided written statements, and their accounts of the accident were consistent throughout. According to the flight instructor, the helicopter was in cruise flight at 75 mph and 800 feet mean sea level (msl) when he announced "simulated engine failure" and reduced the throttle and collective controls. The student pilot responded to the simulated emergency, and adjusted the flight controls in order to establish an autorotation at 60 mph. He said that a cross-check of the instruments revealed that all were "normal" or "in the green." The flight instructor stated that he initiated recovery of the maneuver at 100 feet above ground level (agl) by advancing the throttle and checking engine and rotor rpm indications. Because the engine rpm indication was "zero," the flight instructor announced an actual engine failure, joined the student pilot on the flight controls, and completed the autorotation to the ground. At touchdown, the helicopter bounced on the "right front skid" and rolled over onto its right side. The flight instructor held a commercial pilot certificate with ratings for airplane single-engine land, rotorcraft helicopter and instrument airplane and helicopter. He also held ratings for airplane single-engine land, rotorcraft helicopter and instrument airplane and helicopter. His most recent Federal Aviation Administration (FAA) second-class medical certificate was issued June 30, 2016. The pilot reported 5,154 total hours of flight experience, of which 160 hours were in the accident helicopter make and model. A review of the student pilot's records revealed he had accumulated 35 total hours of flight experience, all of which was in the accident helicopter. According to FAA and maintenance records, the helicopter was manufactured in 1965 and was powered by a Lycoming HIO-360-A1A engine. Its most recent annual inspection was completed September 1, 2016, at 4,749 total aircraft hours. At 1653, the weather reported at Hanchey Army Heliport (HEY), 5 nautical miles south of the accident site included few clouds at 6,000 feet agl with 10 statute miles visibility. The wind was from 330°at 5 knots. The temperature was 33° C, the dew point was 19° C, and the altimeter setting was 29.96 inches of mercury. Photographs of the wreckage revealed the cockpit and fuselage were largely intact. The main rotor blades were damaged and the tailboom was severed. The helicopter was recovered to the operator's facility, and on October 4, 2016, an engine start was attempted on theairframe utilizing the helicopter's own battery and starter under the supervision of an FAA inspector. The engine started immediately and ran smoothly without interruption until shut down by the cockpit controls. ## Aircraft - Registration: [N269BS](https://openairdocs.org/deregistered/N269BS-2022-07-02), registration cancelled 2022-07-02, S/N 65-0205 (OpenAirDocs) - Reported make and model: HUGHES 269B - Registry model: [Hughes 269B](https://openairdocs.org/model/hughes-269b) (registry code 4470502) (OpenAirDocs) - Registry engine: [Lycoming HIO-360 series](https://openairdocs.org/engine/lycoming-hio-360-series) (registry code 41524, reciprocating) (OpenAirDocs) - Category: Helicopter - Serial number: 65-0205 - Year built: 1965 - Airframe hours: 4749 - Engines: Lycoming HIO-360-A1A 180 horsepower reciprocating - Damage: Substantial damage - Flight: Instructional, Part 91 - Airworthiness certificate: Standard, Normal - Last inspection: Annual, September 1, 2016 - Departed: 71J, OZARK, AL - Destination: 71J, OZARK, AL - Equipment: None ## Flight crew As NTSB recorded them. NTSB leaves out names. - Flight instructor; age 51; injuries: minor; flight instructor, commercial; airplane ratings: single-engine land; instrument ratings: airplane, helicopter; medical: class 2, with waivers/limitations; seat: left; restraint: 4-point; flight hours: 5,154 total, 160 in this make and model - Student pilot; age 23; injuries: minor; student; medical: class 2, without waivers/limitations; seat: right; restraint: 4-point; flight hours: 35 total, 35 in this make and model ## Weather - Conditions: Visual (VMC), Day - Wind: 330° at 5 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 91 °F, dew point 66 °F - Altimeter: 29.95 inHg - Observed at: KHEY, 5 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 20160922015859A](https://openairdocs.org/incident/20160922015859A), Sep 22, 2016: Hughes 269B, Ozark, AL, Substantial damage. This was an instructional flight conducted under 4 CFR part 141. Instructor initiated a simulated engine failure and had the student perform the autorotation.… ## Docket (5 files) The files NTSB released with the investigation on December 12, 2018, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=94074. 2.1 MB in all. - Memorandum for Record - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 1, .PDF, 52 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40469294&FileExtension=.PDF&FileName=Memorandum%20for%20Record%20-%20Pilot%2FOperator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1-Master.PDF - Instructor's Statement (item 2, .PDF, 176 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40469295&FileExtension=.PDF&FileName=Instructor%27s%20Statement-Master.PDF - Student's Statement (item 3, .PDF, 165 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40469296&FileExtension=.PDF&FileName=Student%27s%20Statement-Master.PDF - FAA Inspector's Statements (item 4, .PDF, 253 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40469297&FileExtension=.PDF&FileName=FAA%20Inspector%27s%20Statements-Master.PDF - Photos (item 5, .PDF, 3 photos, 1.5 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40469298&FileExtension=.PDF&FileName=Photos-Master.PDF 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.