# NTSB investigations: Lycoming HIO-360 series, 1998 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. ## Latest cases - [NTSB CHI99LA006](https://openairdocs.org/ntsb/CHI99LA006.md): Schweizer 269C · Oshkosh, NE · Accident · No injuries · Limited investigation · Final report · Oct 10, 1998 · N151KC · Substantial damage > the pilot's failure to maintain control of the helicopter. Factors associated with the accident were the high winds, low altitude at which the pilot was maneuvering and the uneven terrain which the helicopter contacted. - [NTSB CHI98LA332](https://openairdocs.org/ntsb/CHI98LA332.md): Schweizer 269C · Decker, IN · Accident · No injuries · Limited investigation · Final report · Sep 4, 1998 · N75068 · Substantial damage > The pilot's failure to maintain obstacle clearance resulting in a collision with a fence. - [NTSB FTW98LA362](https://openairdocs.org/ntsb/FTW98LA362.md): Hughes 269C · Houston, TX · Accident · Minor injuries · Limited investigation · Final report · Aug 17, 1998 · N1103R · Substantial damage > The pilot's failure to refuel the helicopter which resulted in the loss of engine power due to fuel exhaustion. A factor was the lack of suitable terrain for the forced landing. - [NTSB MIA98LA221](https://openairdocs.org/ntsb/MIA98LA221.md): Enstrom F-28F · Marco Island, FL · Accident · No injuries · Limited investigation · Final report · Aug 12, 1998 · N19BZ · Substantial damage > The pilot's inadequate fuel management which led to fuel exhaustion. A related factor was the pilot's improper use of the flight controls during autorotation. - [NTSB ANC98LA109](https://openairdocs.org/ntsb/ANC98LA109.md): Enstrom F-28F · Skwentna, AK · Accident · No injuries · Limited investigation · Final report · Jul 25, 1998 · N8622U · Substantial damage > A loss of engine power due to a fractured number three cylinder intake manifold flange, and the pilot's inability to maintain the proper rate of descent during the autorotation flare. A contributing factor associated with the accident was the downwind… - [NTSB FTW98LA279](https://openairdocs.org/ntsb/FTW98LA279.md): Schweizer 269C · San Angelo, TX · Accident · No injuries · Limited investigation · Final report · May 20, 1998 · N41TH · Substantial damage > The improper touchdown executed by the flight instructor, which resulted in the tail rotor impacting the ground. - [NTSB CHI98LA166](https://openairdocs.org/ntsb/CHI98LA166.md): Enstrom F28 · West Chicago, IL · Accident · No injuries · Limited investigation · Final report · May 14, 1998 · N86238 · Substantial damage > the student pilot attempting a tailwind landing and improper compensation for the wind resulting in too high of a sink rate and the hard landing. - [NTSB ATL98LA065](https://openairdocs.org/ntsb/ATL98LA065.md): Schweizer 269C · San Juan, PR · Accident · No injuries · Limited investigation · Final report · Apr 27, 1998 · N61193 · Substantial damage > The pilot's failure to adequately secure the cargo strap which became entangled in the tail rotor, leading to a loss of the tail rotor control. This was followed by an improperly executed emergency procedure and an in-flight collision with the ground. A… - [NTSB ANC98LA037](https://openairdocs.org/ntsb/ANC98LA037.md): Enstrom F-28F · Haines, AK · Accident · Minor injuries · Limited investigation · Final report · Apr 12, 1998 · N199LB · Substantial damage > The pilot flaring too low during an improper practice autorotation. - [NTSB MIA98LA127](https://openairdocs.org/ntsb/MIA98LA127.md): Schweizer 269-C · Ormond Beach, FL · Accident · No injuries · Limited investigation · Final report · Apr 8, 1998 · N7509E · Substantial damage > The CFI's inadequate supervision and poor communication which led the rated student pilot to roll the throttle off, and the CFI's subsequent failure to apply forward cyclic to increase airspeed which resulted in the subsequent hard landing and roll over. - [NTSB SEA98FA055](https://openairdocs.org/ntsb/SEA98FA055.md): Enstrom F28F · Baker, OR · Accident · No injuries · Field investigation · Final report · Mar 30, 1998 · N171HH · Substantial damage > Fatigue failure of the steel tubing pylon structure. Factors include inadequate inspection by maintenance personnel of damage after a previous accident. - [NTSB FTW98LA129](https://openairdocs.org/ntsb/FTW98LA129.md): Enstrom F-28C-2 · Broomfield, CO · Accident · No injuries · Limited investigation · Final report · Feb 15, 1998 · N5693M · Substantial damage > water contamination in the fuel, which resulted in loss of engine power and a forced (autorotative) landing. Factors relating to the accident were: darkness; and a high obstruction in the emergency landing area. - [NTSB FTW98TA104](https://openairdocs.org/ntsb/FTW98TA104.md): Hughes 269C · Brackettville, TX · Accident · Minor injuries · Final report · Jan 22, 1998 · N1093N · Substantial damage > failure of splines on the drive shaft coupling after separation of the forward bubber boot and loss of lubrication (grease), which resulted in a disconnect of the rotor drive system and an autorotation/forced landing. Lack of suitable terrain in the forced… - [NTSB FTW98LA084](https://openairdocs.org/ntsb/FTW98LA084.md): Hughes 269C · Riviera, TX · Accident · No injuries · Limited investigation · Final report · Jan 2, 1998 · N1091Y · Substantial damage > The total loss of engine power due to a fatigue failure of the crankshaft for undetermined reason. A factor was the lack of suitable terrain for the forced landing. ## 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 year(c."eventDate") = 1998 AND 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&year=1998 --- 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.