# NTSB investigations: Lycoming VO-435 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 13 · 629 cases ## Cases, newest first - [NTSB MIA83LA196](https://openairdocs.org/ntsb/MIA83LA196.md): Bell 47G-2 · Miami, FL · Accident · No injuries · Limited investigation · Final report · Aug 5, 1983 · N471KC · Substantial damage > The student was a rated single eng, multiengine, land plt, but did not have a helicopter rating. During a dual instructional flt, he had just completed the final phase of an autorotation & the skids were on the ground, when he abruptly pulled the collective… - [NTSB FTW83FA311](https://openairdocs.org/ntsb/FTW83FA311.md): Bell 47G-2 · Bethany, OK · Accident · Minor injuries · Field investigation · Final report · Jul 3, 1983 · N2495B · Destroyed > The helicopter collided with trees and rolled over during a forced landing after engine failure. The plt had been takingpassengers up for sight-seeing for several hours. After the last flt he and his wife had departed the city park to fly back to the acft… - [NTSB LAX83FUM07](https://openairdocs.org/ntsb/LAX83FUM07.md): Bell 47G-5 · Valley Center, CA · Accident · No injuries · Final report · Jun 14, 1983 · N2252W · Substantial damage > The acft was damaged during a forced landing following a power loss while engaged in aerial application. The pilot took off with 25 gallons of fuel which he said was usually enough for spraying 40-50 acres. This job was 19 acres but it was 10-12 miles away at… - [NTSB SEA83LA122](https://openairdocs.org/ntsb/SEA83LA122.md): Bell 47G-2 · Zillah, WA · Accident · No injuries · Limited investigation · Final report · Jun 11, 1983 · N41721 · Substantial damage > The rotorcraft made a hard landing after colliding with trees during an autorotation. The acft had experienced an enginefailure while on a repositioning flight between aerial application operations and was forced to land. The acft was autorotated into an… - [NTSB NYC83FHD01](https://openairdocs.org/ntsb/NYC83FHD01.md): Hiller UH-12D · Bricktown, NJ · Accident · No injuries · Final report · Jun 8, 1983 · N67155 · Substantial damage > The plt reported an erratic RPM drop & a partial loss of power during a swath run. This occurred when the helicopter was aprx 10 ft above trees at aprx 40 KTS. The acft began losing airspeed & altitude. During an emergency landing, the tail rotor & main rotor… - [NTSB ATL83LA220](https://openairdocs.org/ntsb/ATL83LA220.md): Texas Helicopter OH-13H/M74A · Ruleville, MS · Accident · No injuries · Limited investigation · Final report · Jun 8, 1983 · N1001G · Substantial damage > The plt reported that the engine lost power during a swath run. A run-on landing was made. Prior to stopping, the right skid & right spray boom hit a rice level, and subsequenily, the main rotor blade chopped the tail boom. No preimpact failures were found. - [NTSB ANC83FA092](https://openairdocs.org/ntsb/ANC83FA092.md): Bell B47G-2 · Anchorage, AK · Accident · No injuries · Field investigation · Final report · Jun 7, 1983 · N6140C · Substantial damage > The helicopter experienced a tail rotor strike during a hard landing with a door open. According to the student pilot who is a commercial pilot working on an add-on helicopter rating, the left cockpit door unlatched and partially opened on the downwind leg… - [NTSB MKC83FA114](https://openairdocs.org/ntsb/MKC83FA114.md): Hiller UH-12E · Troy, KS · Accident · Serious injuries · Field investigation · Final report · May 24, 1983 · N3GK · Destroyed > The acft collided with a powerline while the pilot was locating a field to spray at a later date. The pilot saw telephone lines and flew over them but hit the powerlines which were 20 feet higher. The skids caught the wires and the helicopter nosed down,… - [NTSB NYC83FA106](https://openairdocs.org/ntsb/NYC83FA106.md): Bell 47G-2 · Waymart, PA · Accident · 2 fatal · Field investigation · Final report · Apr 30, 1983 · N2829B · Destroyed > This was an introductory instructional flt. Witnesses observed the helicopter flying straight & level prior to the accident. The helicopter had impacted a 60-FT tree at about the 40-FT level. No preimpact failure/falfunction of either the airframe or engine… - [NTSB LAX83FUA03](https://openairdocs.org/ntsb/LAX83FUA03.md): Bell 47G-5 · Irvine, CA · Accident · No injuries · Final report · Feb 10, 1983 · N1375X · Substantial damage > The helicopter landed hard in a field off the airport following an engine power loss. The acfr had lifted off and only traveled about 50 feet at 15 feet AGL when the power loss occurred. An engine teardown revealed that the rings on 3 cylinders had not seated… - [NTSB MIA83LA069](https://openairdocs.org/ntsb/MIA83LA069.md): Bell 47G2 · Riverview, FL · Accident · Minor injuries · Limited investigation · Final report · Jan 29, 1983 · N74822 · Substantial damage > According to the pilot he lost control of the acft after a bird hit him on the right temple while flying at about 15 feet above the water. The acft was traveling at about 50 mph when the bird flew in through left door opening. The pilot lost control of the… - [NTSB ANC83LA035](https://openairdocs.org/ntsb/ANC83LA035.md): Bell 47G-2 · Anchorage, AK · Accident · Minor injuries · Limited investigation · Final report · Jan 19, 1983 · N2822B · Substantial damage > The helicopter made a landing during which the tail boom was severed. This was a dual instructional flight and accordingto the instructor, a high reconnaissance was performed before selecting their approach to the pinnacle. The pinnacle is a 3000 foot landing… - [NTSB ATL83LA011](https://openairdocs.org/ntsb/ATL83LA011.md): Tomcat MK68 · Cope, SC · Accident · No injuries · Limited investigation · Final report · Oct 15, 1982 · N9080T · Destroyed > Before starting his takeoff from a trailer, the pilot failed to insure that his helper had released the right rear tiedown chain. During lift-off, the helicopter raised the trailer about 2 to 3 ft before the chain. Broke. Simultaneously, the helicopter was… - [NTSB LAX82DA360](https://openairdocs.org/ntsb/LAX82DA360.md): Bell 47G-5 · Soledad, CA · Accident · No injuries · Final report · Sep 27, 1982 · N8562F · Substantial damage > The pilot experienced a power loss during lift-off. A hard landing was made. No reason for the malfunction was found. - [NTSB MKC82DA151](https://openairdocs.org/ntsb/MKC82DA151.md): Bell 47G-2A · Washington, IA · Accident · No injuries · Final report · Aug 22, 1982 · N73205 · Substantial damage > The helicopter was being air taxied to the refueling location when it crashed. The pilot said he had lifted off and was about 6 ft AGL with about 20 KTS forward speed when he suddenly felt a snap and the cyclic went full left. The helicopter became… - [NTSB MKC82DA129](https://openairdocs.org/ntsb/MKC82DA129.md): Texas Helicopter OH-13E · 10 Sw Of Milan, MO · Accident · No injuries · Final report · Jul 20, 1982 · N38117 · Substantial damage > The plt had reduced the spray load from 90 to 50 gals to compensate for the increase in density altitude. The winds were blowing lightly during previous takeoffs but were calm during this takeoff. As the helicopter hovered forward during the takeoff it failed… - [NTSB SEA82DA112](https://openairdocs.org/ntsb/SEA82DA112.md): Bell 47G-2 · Harrah, WA · Accident · Serious injuries · Final report · Jul 15, 1982 · N6145C · Substantial damage > The pilot reported that before taking off, the fuel quantity guages indicated there was sufficient fuel to complete one more load and still have an adequate reserve. After dispensing the load, the engine lost power while he was returning to the nurse truck.… - [NTSB FTW82IA268](https://openairdocs.org/ntsb/FTW82IA268.md): Bell 47G2A1 · Near Mertzon, TX · Incident · No injuries · Incident investigation · Final report · Jul 3, 1982 · N73983 · Minor damage > While the aircraft was being hovered low and slow around a water trough, directional control was lost. The pilot autorotated to the ground and on touchdown the right skid buckled and the tailrotor gearbox separated when it struck an ant hill. The pilot… - [NTSB NYC82DA124](https://openairdocs.org/ntsb/NYC82DA124.md): Continental EL Tomcat MK5A · Imlaystown, NJ · Accident · No injuries · Final report · Jun 15, 1982 · N9062T · Substantial damage > During a swath run, a bird flew into the windshield and the pilot rolled the helicopter to the right to avoid further bird strikes. The right spray boom contacted the crops and pulled the aircraft into the ground resulting in substantial damage. - [NTSB CHI82DA198](https://openairdocs.org/ntsb/CHI82DA198.md): Bell 47G-5A · New Philadelphi, OH · Accident · Minor injuries · Final report · Jun 1, 1982 · N2988W · Destroyed > While patrolling a powerline, the pilot heard a loud noise, similar to a gunshot, which seemed to come from directly behind the firewall. Immediately after that, the helicopter started to pitch up and roll to the right. He reported that the helicopter reached… - [NTSB LAX82DA186](https://openairdocs.org/ntsb/LAX82DA186.md): Bell 47G2 · Santa Maria, CA · Accident · No injuries · Final report · May 21, 1982 · N130V · Substantial damage > The helicopter contacted the platform with a landing skid and rolled over during an attempted takeoff. As the helicopterlifted off of a truck mounted platform a skid became fouled by the truck and a dynamic roll-over occurred. - [NTSB SEA82DA072](https://openairdocs.org/ntsb/SEA82DA072.md): Bell 47G-2 · Grandview, WA · Accident · No injuries · Final report · May 18, 1982 · N11VH · Substantial damage > While dispensing herbicide (systox) over an apple orchard the pilot sensed that the engine was binding followed by a power loss. The pilot elected to dump the herbicide and performed a power-off autorotation landing in a grape vineyard. Investigation revealed… - [NTSB CHI82DA171](https://openairdocs.org/ntsb/CHI82DA171.md): Bell 47G-5 · Sublette, IL · Accident · Minor injuries · Final report · May 17, 1982 · N7841S · Substantial damage > Prior to this flight, the helicopter had been flown about 1 hr from roselle to Sublette, IL, then it was flown another 1/2 hr to survey the area to be sprayed. About 10 minutes after departing to spray, the engine lost power. The pilot started an autorotative… - [NTSB MKC82DA082](https://openairdocs.org/ntsb/MKC82DA082.md): Bell 47G2 · Thornton, IA · Accident · Minor injuries · Final report · May 14, 1982 · N8426E · Substantial damage > During the downwind turn for the fourth spraying pass the pilot encountered a gust of wind. The pilot stated he applied power, collective and cyclic to level off at spraying altitude but the wind was too strong to prevent the tailboom from striking the ground. - [NTSB SEA82DA057](https://openairdocs.org/ntsb/SEA82DA057.md): Hiller-Soloy 12E · Christmas Valle, OR · Accident · Serious injuries · Final report · Apr 23, 1982 · N62377 · Minor damage > The helicopter was being used to string a transmission line. A rope (attach line) was used to connect the helicopter to the transmission line. The rope became detached and the pilot landed to have it reattached. A man, involved in the ground operations,… - [NTSB LAX82DA135](https://openairdocs.org/ntsb/LAX82DA135.md): Bell 47G-2 · Stockton, CA · Accident · No injuries · Final report · Apr 15, 1982 · N2879B · Destroyed > The pilot landed to pick up a flagger and take him to the end of the field. The landing was made facing north on a north-south driveway. An overhead line was located along the east side of the driveway. During takeoff, the pilot moved laterally to the west,… - [NTSB SEA82DA050](https://openairdocs.org/ntsb/SEA82DA050.md): Bell 47G-2A · Lyle, WA · Accident · No injuries · Final report · Apr 10, 1982 · N11VH · Substantial damage > During takeoff with a load of fertilizer, insufficient power was available to maintain engine and rotor RPM and sustain flight. The pilot dumped the load, but was unable to avoid ground contact. The tail rotor struck first and separated from the aircraft. The… - [NTSB CHI82DER14](https://openairdocs.org/ntsb/CHI82DER14.md): Bell 47G2 · Kerrick, MN · Accident · No injuries · Closed · Nov 28, 1981 · N13298 · Substantial damage - [NTSB LAX81DUK10](https://openairdocs.org/ntsb/LAX81DUK10.md): Texas Hel OH-13H · Yuma, AZ · Accident · No injuries · Closed · Sep 25, 1981 · N51853 · Substantial damage - [NTSB NYC81FHJ17](https://openairdocs.org/ntsb/NYC81FHJ17.md): Bell 47G-2 · Farmingdale, NY · Accident · No injuries · Closed · Sep 13, 1981 · N6733D · Substantial damage - [NTSB NYC81FGM30](https://openairdocs.org/ntsb/NYC81FGM30.md): Bell 47G-2A · Hollidaysburg, PA · Accident · Minor injuries · Closed · Sep 7, 1981 · N7764 · Destroyed - [NTSB LAX81DUK02](https://openairdocs.org/ntsb/LAX81DUK02.md): Bell 47G-5 · Yuma, AZ · Accident · No injuries · Closed · Sep 4, 1981 · N2294W · Substantial damage - [NTSB CHI81FER60](https://openairdocs.org/ntsb/CHI81FER60.md): Bell 47G3B1 · Stewart, MN · Accident · No injuries · Closed · Aug 12, 1981 · N96671 · Substantial damage - [NTSB LAX81FUQ25](https://openairdocs.org/ntsb/LAX81FUQ25.md): Bell 47G-2 · Agua Dulce, CA · Accident · No injuries · Closed · Jul 5, 1981 · N9763Z · Substantial damage - [NTSB CHI81DER47](https://openairdocs.org/ntsb/CHI81DER47.md): Bell 47G-2 · Gully, MN · Accident · No injuries · Closed · Jun 27, 1981 · N6744D · Substantial damage - [NTSB CHI81FEV21](https://openairdocs.org/ntsb/CHI81FEV21.md): Texas Hel OH-13H · Danville, IL · Accident · 1 fatal · Closed · Jun 16, 1981 · N10002 · Destroyed - [NTSB CHI81DEP22](https://openairdocs.org/ntsb/CHI81DEP22.md): Bell 47G-5 · Coloma, WI · Accident · No injuries · Closed · Jun 12, 1981 · N1315X · Substantial damage - [NTSB SEA81DYE31](https://openairdocs.org/ntsb/SEA81DYE31.md): Hiller UN-12D · Castle Rock, WA · Accident · Minor injuries · Closed · Jun 10, 1981 · N62377 · Destroyed - [NTSB LAX81FUG25](https://openairdocs.org/ntsb/LAX81FUG25.md): Bell 47G-2 · Oasis, CA · Accident · Serious injuries · Closed · Apr 30, 1981 · N2498B · Destroyed - [NTSB FTW81DPJ24](https://openairdocs.org/ntsb/FTW81DPJ24.md): Bell 47D1 · Okeene, OK · Accident · No injuries · Closed · Apr 25, 1981 · N7768 · Substantial damage - [NTSB MIA81FA053](https://openairdocs.org/ntsb/MIA81FA053.md): Hiller UH-12D · Miami Beach, FL · Accident · Minor injuries · Closed · Mar 20, 1981 · N62376 · Destroyed - [NTSB LAX81DVM17](https://openairdocs.org/ntsb/LAX81DVM17.md): Bell 47G · Pescadero, CA · Accident · No injuries · Closed · Mar 17, 1981 · N62221 · Destroyed - [NTSB MIA81FKT31](https://openairdocs.org/ntsb/MIA81FKT31.md): Hiller Acft UH-12D · Miami, FL · Accident · No injuries · Closed · Mar 8, 1981 · N62362 · Substantial damage - [NTSB SEA81FYM09](https://openairdocs.org/ntsb/SEA81FYM09.md): Bell 47G-3 · Buell, OR · Accident · Minor injuries · Closed · Nov 22, 1980 · N6784D · Substantial damage - [NTSB DEN81FA009](https://openairdocs.org/ntsb/DEN81FA009.md): Hiller Acft 12E · Blanding, UT · Accident · No injuries · Closed · Nov 5, 1980 · N57972 · Substantial damage - [NTSB MIA81DLD04](https://openairdocs.org/ntsb/MIA81DLD04.md): Bell 47J · Yeehaw Jnction, FL · Accident · No injuries · Closed · Oct 13, 1980 · N16082 · Substantial damage - [NTSB LAX81FUJ03](https://openairdocs.org/ntsb/LAX81FUJ03.md): Bell 47G-5 · Roll, AZ · Accident · No injuries · Closed · Oct 3, 1980 · N7869S · Destroyed - [NTSB LAX80FUK01](https://openairdocs.org/ntsb/LAX80FUK01.md): Bell 47G-5A · Yuma, AZ · Accident · No injuries · Closed · Sep 11, 1980 · N7990J · Destroyed - [NTSB ATL80FLA06](https://openairdocs.org/ntsb/ATL80FLA06.md): Tom Cat MK-5A · Quitman, GA · Accident · No injuries · Closed · Aug 15, 1980 · N3575B · Substantial damage - [NTSB LAX80FVM37](https://openairdocs.org/ntsb/LAX80FVM37.md): Texas Hel OH-13H · Salinas, CA · Accident · 1 fatal · Closed · Aug 6, 1980 · N10003 · Substantial damage Next page: https://openairdocs.org/ntsb.md?engine=41525&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 ('41525')) ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC ``` This list as a web page: https://openairdocs.org/ntsb?engine=41525&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.