# NTSB investigations: Lycoming HIO-360 series NTSB aviation accident and incident investigations since 1962: the probable cause, findings, aircraft, crew, weather and docket of each, linked to the FAA registry and the FAA’s own reports. Page 6 of 8 · 390 cases ## Cases, newest first - [NTSB FTW91LA150](https://openairdocs.org/ntsb/FTW91LA150.md): Hughes 269A-1 · No. Little Rock, AR · Accident · No injuries · Limited investigation · Final report · Aug 18, 1991 · N65372 · Substantial damage > The pilot's failure to maintain main rotor RPM, his delayed flare, and the improper touchdown. - [NTSB SEA91LA044](https://openairdocs.org/ntsb/SEA91LA044.md): Schweizer Hughes 269C · Princeton, OR · Accident · No injuries · Limited investigation · Final report · Jan 19, 1991 · N75070 · Substantial damage > The pilot's attempt to hover out of ground effect at a density altitude and gross weight in tailwind weather conditions that exceeded the aircraft performance limits. Factors relating to the accident were the high density altitude and tailwind weather… - [NTSB CHI91LA048](https://openairdocs.org/ntsb/CHI91LA048.md): Hughes 269A · Sellersburg, IN · Accident · No injuries · Limited investigation · Final report · Dec 26, 1990 · N90270 · Substantial damage > A pilot induced loss of engine power by inadvertent deactivation of the fuel mixture control. - [NTSB LAX90LA335](https://openairdocs.org/ntsb/LAX90LA335.md): Enstrom F28F · Beatty, NV · Accident · No injuries · Limited investigation · Final report · Sep 6, 1990 · N8620A · Substantial damage > The pilot's selection of unsuitable terrain on which to land. Loose shale rock and sloping downhill terrain were factors in the accident. - [NTSB SEA90LA116](https://openairdocs.org/ntsb/SEA90LA116.md): Enstrom F28C · Camas, WA · Accident · No injuries · Limited investigation · Final report · Jun 7, 1990 · N51729 · Substantial damage > The failure of a sprag clutch in the rotor-drive mechanism, at an altitude and position that precluded or limited the possibility of a successful outcome. - [NTSB FTW90LA074](https://openairdocs.org/ntsb/FTW90LA074.md): Hughes 269C · Houma, LA · Accident · No injuries · Limited investigation · Final report · Feb 24, 1990 · N7504A · Substantial damage > Loss of engine power for an unknown reason. - [NTSB LAX90LA065](https://openairdocs.org/ntsb/LAX90LA065.md): Hughes 269C · Rialto, CA · Accident · No injuries · Limited investigation · Final report · Jan 6, 1990 · N7456F · Destroyed > The lack of adequate supervision by the instructor pilot during a critical phase of flight when he allowed a student to perform in an unsafe manner without taking immediate corrective action. - [NTSB ATL90LA043](https://openairdocs.org/ntsb/ATL90LA043.md): Schweizer 269C · Norcross, GA · Accident · No injuries · Limited investigation · Final report · Dec 22, 1989 · N75068 · Substantial damage > The student pilot's improper execution of the landing procedure resulting in dynamic roll-over of the helicopter. - [NTSB SEA90LA016](https://openairdocs.org/ntsb/SEA90LA016.md): Hughes 269C · Estacada, OR · Accident · 1 fatal · Limited investigation · Final report · Nov 15, 1989 · N9592F · Destroyed > The pilot misjudged clearance between her external load and the obstruction. Factors related to the accident were: the obstruction, improper maintenance and modification of the external load line/hook by the operator, failure of the pilot to jettison the… - [NTSB BFO90LA011](https://openairdocs.org/ntsb/BFO90LA011.md): Enstrom F-28F · Wilmington, DE · Accident · No injuries · Limited investigation · Final report · Nov 14, 1989 · N8627J · Substantial damage > A loss of engine power as a result of the student pilot inadvertently pulling the mixture control to the idle cut-off position, and the flight instructor's inadequate supervision. A contributing factor to the accident was the rough and uneven terrain. - [NTSB MIA89LA231](https://openairdocs.org/ntsb/MIA89LA231.md): Hughes 269A · Jacksonville, FL · Accident · Minor injuries · Limited investigation · Final report · Aug 25, 1989 · N9014N · Substantial damage > Inadequate visual look-out by the pilot and his failure to maintain control of the helicopter, while maneuvering to avoid obstructions. The transmission lines were considered to be factors. - [NTSB MIA89LA243](https://openairdocs.org/ntsb/MIA89LA243.md): Hughes 269C · Hollywood, FL · Accident · Serious injuries · Limited investigation · Final report · Aug 5, 1989 · N81AM · Destroyed > The severe fuselage vibration (ground resonance) and the pilot's improper planning/decision to avoid or compensate for the occurrence. A factor related to the accident was the low shock strut. - [NTSB BFO89LA054](https://openairdocs.org/ntsb/BFO89LA054.md): Hughes 269C · Baltimore, MD · Accident · No injuries · Limited investigation · Final report · Jul 1, 1989 · N1113Z · Substantial damage > The pilot landed on unsuitable soft terrain which caused the landing skid to sink into the ground. This resulted in a landing skid overload failure and nose over of the helicopter. Contributing to the accident was the soft terrain. - [NTSB CHI89FA112](https://openairdocs.org/ntsb/CHI89FA112.md): Hughes 269C · Lockport, IL · Accident · Minor injuries · Field investigation · Final report · Jun 18, 1989 · N26628 · Destroyed > Improper flight technique by the PIC during a takeoff from a confined area. - [NTSB CHI89DEV06](https://openairdocs.org/ntsb/CHI89DEV06.md): Hughes 269C · Millersville, IL · Accident · No injuries · Final report · Jun 6, 1989 · N7439F · Destroyed > Loss of rotor RPM for an undetermined reason during a turn to reverse direction while applying agricultural chemicals. - [NTSB FTW89DRG06](https://openairdocs.org/ntsb/FTW89DRG06.md): Hughes 269C · Rocksprings, TX · Accident · 1 fatal · Final report · May 18, 1989 · N58228 · Destroyed > The pilot diverted his attention from operation of the helicopter, failed to maintian proper rotor RPM, and failed to maintain altitude (clearance) above the ground, while maneuvering at low altitude. A contributing factor was his impairment from use of a… - [NTSB NYC89LA114](https://openairdocs.org/ntsb/NYC89LA114.md): Hughes 269C · Rosehayn, NJ · Accident · Serious injuries · Limited investigation · Final report · Apr 11, 1989 · N1093Y · Substantial damage > The pilots failure to maintain control of the aircraft during landing. This resulted in an uncontrolled touchdown and rollover of the helicopter. - [NTSB LAX89LA152](https://openairdocs.org/ntsb/LAX89LA152.md): Hughes 269B · Long Beach, CA · Accident · Minor injuries · Limited investigation · Final report · Apr 8, 1989 · N9456F · Substantial damage > Improper in-flight planning/decision by the pilot, which led to an inadequate supply of fuel to reach the airport and subsequent fuel exhaustion. The pilot's lack of flight time in this make and model of helicopter was considered to be a factor. - [NTSB LAX89LA309](https://openairdocs.org/ntsb/LAX89LA309.md): Hughes 269C · Mesa, AZ · Accident · No injuries · Limited investigation · Final report · Mar 30, 1989 · N58164 · Substantial damage > Improper flare by the student pilot, and improper supervision by the instructor pilot (CFI). - [NTSB CHI89FA062](https://openairdocs.org/ntsb/CHI89FA062.md): Hughes 269C · De Kalb, IL · Accident · Serious injuries · Field investigation · Final report · Mar 22, 1989 · N8642F · Destroyed > Fatigue failure of the number four connecting rod which resulted in an engine failure. Factors in the accident were the broken ring in the number one piston and a deteriorated center main bearing. - [NTSB SEA89LA052](https://openairdocs.org/ntsb/SEA89LA052.md): Schweizer 269C · Forrest Grove, OR · Accident · Minor injuries · Limited investigation · Final report · Mar 3, 1989 · N7505Y · Substantial damage > The pilot's misjudgment of his altitude and clearance while attempting to sling-load a trailer. - [NTSB CHI89LA029](https://openairdocs.org/ntsb/CHI89LA029.md): Mcdonnell Douglas 269C · Frankfort, IL · Accident · Minor injuries · Limited investigation · Final report · Nov 28, 1988 · N1098P · Substantial damage > The helicopter experienced a tree strike with the main rotor blades and then rolled over when it struck the ground during a precautionary landing attempt. The helicopter had been conducting contract power line patrol when the PIC noted an apparent partial… - [NTSB LAX89LA044](https://openairdocs.org/ntsb/LAX89LA044.md): Enstrom F-28C · Inyokern, CA · Accident · No injuries · Limited investigation · Final report · Nov 16, 1988 · N552CS · Destroyed > The pilot stated that, 'I landed in an open unpopulated area for the mechanic... To make adjustments on the main blade (we were tracking and balancing the blades). I never shut the engine down. I disengaged the clutch. After the adjustment was made, I… - [NTSB MIA89LA018](https://openairdocs.org/ntsb/MIA89LA018.md): Schweizer 269C · Arcadia, FL · Accident · No injuries · Limited investigation · Final report · Oct 28, 1988 · N75068 · Substantial damage > After making an apch to 'the numbers' on rwy 5, the plt decelerated the helicopter & began to air taxi to the refueling area. Subsquently, while decelerating and/or while taxiing, the tail rotor collided with terrain. - [NTSB FTW89LA010](https://openairdocs.org/ntsb/FTW89LA010.md): Hughes 269C · Dickens, TX · Accident · No injuries · Limited investigation · Final report · Oct 27, 1988 · N7463F · Destroyed > The pilot was inspecting a herd of cattle when he thought the helicopter was developing a problem with the engine and main rotor. He started an autorotation, lost tail rotor control, and went into a left spin which continued to contact with the ground.… - [NTSB NYC88LA226](https://openairdocs.org/ntsb/NYC88LA226.md): Hughes 269A · Pittstown, NJ · Accident · Minor injuries · Limited investigation · Final report · Aug 21, 1988 · N7028V · Substantial damage > The CFI was demonstrating a departure autorotation to a prospective student. A high rate of descent with low airspeed and low rotor RPM developed and the CFI attempted a power recovery with no results. The acft touched down hard, the skids collapsed and the… - [NTSB CHI88DEE07](https://openairdocs.org/ntsb/CHI88DEE07.md): Hughes 269C · Sandwich, IL · Accident · No injuries · Final report · Jul 21, 1988 · N7425F · Substantial damage > The plt rprtd that while he was conducting spraying opns, he noted a significant loss of eng power. He made a run-on landing in a bean field. As he landed, the left skid dug into a furrow & the helicopter rolled over. During the investigation, which included… - [NTSB SEA88LA127](https://openairdocs.org/ntsb/SEA88LA127.md): Enstrom F-28F · Haines, AK · Accident · No injuries · Limited investigation · Final report · Jul 13, 1988 · N8620C · Substantial damage > The pilot purchased the helicopter with an undocumented modification designed to restrain the collective. Reportedly, hereceived no guidance regarding the use of the collective hold-down device. According to the aircraft manufacturer there existed no Enstrom… - [NTSB ATL88FA168](https://openairdocs.org/ntsb/ATL88FA168.md): Hughes 269A · Ozark, AL · Accident · 1 fatal · Field investigation · Final report · May 9, 1988 · N1038Y · Substantial damage > Three months prior to the accident a mechanic repaired the left magneto. He reinstalled it and timed it with the right magneto. Both magnetos were found to have advanced timing. Internal examination showed discrepancies which would lead to electrical… - [NTSB SEA88LA073](https://openairdocs.org/ntsb/SEA88LA073.md): Hughes 269C · Sitka, AK · Accident · No injuries · Limited investigation · Final report · Apr 12, 1988 · N92PC · Substantial damage > During sling operations, the long line became separated and entangled in the tail rotor at about 300 feet AGL. The pilot landed the helicopter onto a beach area where it rolled over onto its left side striking the main rotor. No accident report has been filed… - [NTSB FTW88LA080](https://openairdocs.org/ntsb/FTW88LA080.md): Hughes 269C · Tomball, TX · Accident · Minor injuries · Limited investigation · Final report · Mar 15, 1988 · N58332 · Substantial damage > As the helicopter lifted off the portable landing platform, it rolled to the right and contacted the terrain. The pilot could not determine if the skid was caught on the platform or if it slid off the side. - [NTSB SEA88LA022](https://openairdocs.org/ntsb/SEA88LA022.md): Hughes 269B · Las Vegas, NV · Accident · Minor injuries · Limited investigation · Final report · Nov 24, 1987 · N22730 · Destroyed > During practice autorotation the pilot flared excessively high and the tail boom struck the ground. The pilot then lost control of the aircraft. The density alt was 2616 feet. A rt quartering tailwind was present. - [NTSB NYC88LA018](https://openairdocs.org/ntsb/NYC88LA018.md): Enstrom F-28C · Laconia, NH · Accident · No injuries · Limited investigation · Final report · Oct 25, 1987 · N51699 · Substantial damage > The plt rprtd he was demonstrating a full touchdown autorotation in winds that were from 290 deg at 15 gusting 20 KTS. He stated the touchdown was soft with a lot of pitch pulled in; however, as he lowered the collective after touchdown, the retreating blade… - [NTSB LAX87LA339](https://openairdocs.org/ntsb/LAX87LA339.md): Hughes 269C · Freemont, CA · Accident · Minor injuries · Limited investigation · Final report · Sep 17, 1987 · N1101K · Substantial damage > The purpose of the flt was to provide instruction to a foreign national, who held a U.S. Private helicopter rating. The instructor (CFI) rprtd that during a practice autorotation, he announced twice for the student to flare as the helicopter was passing thru… - [NTSB CHI87LA150](https://openairdocs.org/ntsb/CHI87LA150.md): Hughes 300C · Aurora, IL · Accident · No injuries · Limited investigation · Final report · Jun 17, 1987 · N3625B · Substantial damage > While the student & instructor (CFI) were on an instructional flt, a decision was made to practice an autorotation & simulated tail rotor failure. Rprtdly, a smooth touchdown was made, but the helicopter began to vibrate. The CFI electedto get the helicopter… - [NTSB MIA87LA089](https://openairdocs.org/ntsb/MIA87LA089.md): Hughes 269A · Jacksonville, FL · Accident · No injuries · Limited investigation · Final report · Feb 20, 1987 · N90270 · Substantial damage > The instructor plt was demonstrating a hovering autorotation landing with forward movement, when, after the throttle was closed, the helicopter hung in the air. Forward cyclic was then applied when he realized that the rotor RPM began to deteriorate. The… - [NTSB CHI87LA072](https://openairdocs.org/ntsb/CHI87LA072.md): Enstrom F-28A · Martinsville, IN · Accident · No injuries · Limited investigation · Final report · Jan 31, 1987 · N9257 · Destroyed > While landing to the east the plt was blinded by the sun and the acft struck telephone wires. - [NTSB ATL87LA023](https://openairdocs.org/ntsb/ATL87LA023.md): Hughes 269C · Eden, NC · Accident · No injuries · Limited investigation · Final report · Nov 19, 1986 · N9665F · Substantial damage > Pilot related that he had placed the helicopter at triad for a 50 hour inspection. Aircraft reportedly defueled to dry tank. Six days later fuel truck log shows aircraft refueled with 23.2 gallons as payback. According to information furnished by owner and… - [NTSB FTW87LA008](https://openairdocs.org/ntsb/FTW87LA008.md): Hughes 269C · Monahans, TX · Accident · Minor injuries · Limited investigation · Final report · Oct 24, 1986 · N8970F · Destroyed > The acft was destroyed during a forced landing following a partial loss of pwr after liftoff from a trailer. The acft settled back down onto the front of the trailer and subsequently rolled over. The eng continued to run following the roll over. The plt… - [NTSB NYC87MA024](https://openairdocs.org/ntsb/NYC87MA024.md): Enstrom F-28F · Manhattan, NY · Accident · 1 fatal · Major investigation · Final report · Oct 22, 1986 · N8617B · Destroyed > The aircraft was contracted by nbc to make daily highway traffic observations in the new york city area. The pilot and passenger, an nbc radio traffic reporter, were flying in a northerly direction along Manhattan's west side at an altitude of about 75 feet.… - [NTSB MKC86LA196](https://openairdocs.org/ntsb/MKC86LA196.md): Floyd R.Harris Eagle 2 · Joplin, MO · Accident · No injuries · Limited investigation · Final report · Sep 28, 1986 · N25FH · Substantial damage > Pilot was landing rwy 22 with winds from 190 at 12. Just before touchdown, a wind gust lifted acft to right, off side of the runway. Pilot started a go-around but discovered path of flight was toward tower and terminal bldg. Pilot aborted go-around and put… - [NTSB CHI86LA236](https://openairdocs.org/ntsb/CHI86LA236.md): Hughes 269B · Baldwin, WI · Accident · No injuries · Limited investigation · Final report · Sep 26, 1986 · N9427F · Substantial damage > After picking up his passenger at williams pipeline, minneapolis, Minnesota, the plt flew eastward along interstate 90 enroute to a pipeline near wausau, Wisconsin. While flying at approximatelly 400 feet, the plt and passenger stated that the engine started… - [NTSB NYC86LA113](https://openairdocs.org/ntsb/NYC86LA113.md): Enstrom F-28C · Ridgefield Park, NJ · Accident · No injuries · Limited investigation · Final report · Apr 27, 1986 · N60PB · Substantial damage > A weight imbalance, then a split needle, caused the plt to abort 2 previous attempts to depart. Conditions were corrected & the helicopter departed the waterfront helipad. As it went over the water, the plt noted a loss of eng power. He tried to return to the… - [NTSB CHI86LA127](https://openairdocs.org/ntsb/CHI86LA127.md): Hughes 269A · Ft. Wayne, IN · Accident · Minor injuries · Limited investigation · Final report · Apr 23, 1986 · N8752F · Destroyed > Approx 10-15 minutes after takeoff the student pilot lost control of the helicopter and crash landed into trees. Following the accident, the only unusual thing FAA personnel could locate was a failed horizontal stabilizer spar. Post-crash examination of the… - [NTSB CHI86FER03](https://openairdocs.org/ntsb/CHI86FER03.md): Hughes 269A (TH-55A) · Lakeville, MN · Accident · Minor injuries · Final report · Mar 29, 1986 · N10415 · Destroyed > The CFI reported the accident occurred during a demonstration of wind effect during turns around a point. The CFI reported that as the helicopter was turned downwind it began descending from an alt of aprx 200 ft AGL. It continued it's descent until the right… - [NTSB ATL86LA053](https://openairdocs.org/ntsb/ATL86LA053.md): Hughes 269A · Brewton, AL · Accident · Minor injuries · Limited investigation · Final report · Jan 8, 1986 · N8866F · Substantial damage > During low level controlled burning of a small timber forest the helicopter lost power. A forced landing was attempted in a field and the helicopter was substantially damaged. The aircraft owner related that the aircraft ran out of fuel. - [NTSB SEA86LA026](https://openairdocs.org/ntsb/SEA86LA026.md): Hughes 269C · Brooks, OR · Accident · No injuries · Limited investigation · Final report · Nov 24, 1985 · N58181 · Substantial damage > A total loss of power occurred due to the number 4 cylinder failing. A tail boom strike occurred during a hard landing in a parking lot, severing the tail boom. - [NTSB NYC86LA011](https://openairdocs.org/ntsb/NYC86LA011.md): Enstrom F-28C · Linden, NJ · Accident · No injuries · Limited investigation · Final report · Oct 17, 1985 · N5691Y · Substantial damage > The helicopter experienced a roll-over during a practice hover autorotation. The acc occurred when the acft started moving backwards during the hover. The left skid dug into the dirt which pitched the acft nose up & rolled it over to the left. - [NTSB ATL86LA005](https://openairdocs.org/ntsb/ATL86LA005.md): Hughes 269C · Chapman, AL · Accident · Minor injuries · Limited investigation · Final report · Oct 10, 1985 · N7451F · Destroyed > During an attempted takeoff from a field adjacent to a grove of trees the aircraft was unable to climb over the trees and crashed into them. The engine was test run and although it ran rough during initial start up it later operated normally and the reason… - [NTSB CHI85LA352](https://openairdocs.org/ntsb/CHI85LA352.md): Hughes 269A · Hector, MN · Accident · No injuries · Limited investigation · Final report · Aug 18, 1985 · N8777F · Substantial damage > After liftoff from an open field, on a short local flight the helicopter experienced fuel exhaustion. During the auto rotation landing, in an open field the helicopter rolled on the side. Next page: https://openairdocs.org/ntsb.md?engine=41524&page=7 ## The whole list in SQL Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS: ```sql SELECT c."ntsbNumber", c."eventDate", c."eventType", c."eventCity", c."eventStateOrRegion", a.n_number, a."aircraftMake", a."aircraftModel", c."highestInjuryLevel", c."totalFatal", c."completionStatus", c.report_url FROM 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c LEFT JOIN 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a ON a.case_mkey = c."mKey" AND a.position = 1 WHERE c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('41524')) ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC ``` This list as a web page: https://openairdocs.org/ntsb?engine=41524&page=6 --- 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.