# NTSB investigations: Kaman Aerospace K-1200 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 CEN26FA247](https://openairdocs.org/ntsb/CEN26FA247.md): Kaman Aerospace K-1200 · Silver Jack Reservoir, CO · Accident · 1 fatal · Class 3 · Field · Preliminary report · Jul 12, 2026 · N40HX · Substantial damage > On July 12, 2026, about 1705 mountain daylight time, a Kaman Aerospace Corporation K-1200 (K-MAX) helicopter, N40HX, was substantially damaged when it was involved in an accident at Silver Jack Reservoir, Colorado. The pilot was fatally injured. The… - [NTSB CEN25LA334](https://openairdocs.org/ntsb/CEN25LA334.md): Kaman Aerospace K-1200 · Eagle, CO · Accident · No injuries · Class 4 · Limited · Final report · Aug 22, 2025 · N171PL · Substantial damage > The pilot’s failure to maintain helicopter control which resulted in an uncontrolled descent and impact with terrain. - [NTSB WPR23LA097](https://openairdocs.org/ntsb/WPR23LA097.md): Kaman Aerospace K-1200 · Sweet Home, OR · Accident · No injuries · Class 3 · Limited · Final report · Jan 24, 2023 · N202WM · Substantial damage > Improper installation of the hardware retaining the adjustment screw in the N2 topping governor lever and roller assembly, which resulted in a partial loss of engine power. - [NTSB WPR20LA283](https://openairdocs.org/ntsb/WPR20LA283.md): Kaman K 1200 · Pine Grove, OR · Accident · 1 fatal · Class 3 · Limited · Final report · Aug 25, 2020 · N314 · Substantial damage > An in-flight breakup resulting from contact of the left rotor system with the right rotor system after an in-flight failure of a servo flap from a left rotor blade. - [NTSB GAA17CA146](https://openairdocs.org/ntsb/GAA17CA146.md): Kaman Aerospace K 1200 · Julian, CA · Accident · No injuries · Data collection · Final report · Mar 13, 2017 · N675TH · Substantial damage > The pilot’s failure to conduct a thru-flight walkaround inspection, which resulted in the engine cowling remaining open and subsequently separating from the helicopter and striking the main rotor blades and vertical stabilizer during departure. - [NTSB WPR10FA295](https://openairdocs.org/ntsb/WPR10FA295.md): Kaman Aerospace K-1200 · Donnelly, ID · Accident · 1 fatal · Field investigation · Final report · Jun 16, 2010 · N134WC · Substantial damage > The collision of two counter-rotating main rotor blades for undetermined reasons, which resulted in a loss of control. - [NTSB WPR09LA057](https://openairdocs.org/ntsb/WPR09LA057.md): Kaman K-1200 · Santa Clarita, CA · Accident · 1 fatal · Limited investigation · Final report · Dec 17, 2008 · N267KA · Substantial damage > The helicopter's encounter with a gusty crosswind condition during engine start that exceeded the helicopter's demonstrated wind envelope. - [NTSB SEA06FA067](https://openairdocs.org/ntsb/SEA06FA067.md): Kaman K-1200 · Dayville, OR · Accident · 1 fatal · Field investigation · Final report · Mar 17, 2006 · N263KA · Substantial damage > The improper overhaul of the reduction gear box assembly and improper installation of the N1 seal and nut assembly lockcup by maintenance personnel, which resulted in failure of the reduction gear box and a total loss of engine power. A contributing factor… - [NTSB SEA04LA082](https://openairdocs.org/ntsb/SEA04LA082.md): Kaman K-1200 · West Fork, OR · Accident · 1 fatal · Limited investigation · Final report · May 12, 2004 · N162KA · Substantial damage > The pilot's failure to maintain adequate clearance with trees during logging operations. Contributing factors were the trees, mountainous (steeply sloped) terrain, and the pilot's decision to conduct operations in this terrain with a 200 foot long line. - [NTSB SEA03GA153](https://openairdocs.org/ntsb/SEA03GA153.md): Kaman K-1200 · Keller, WA · Accident · 1 fatal · Final report · Jul 26, 2003 · N314KA · Destroyed > Corrosion fatigue within the blade retention bolt bushing(s) of the main rotor blade grip resulting in fatigue, cracking and ultimate separation of the upper grip plate. The separation of the upper blade grip plate led to a dynamic imbalance within the rotor… - [NTSB SEA00LA129](https://openairdocs.org/ntsb/SEA00LA129.md): Kaman K-1200 · Cusick, WA · Accident · Serious injuries · Limited investigation · Final report · Jul 11, 2000 · N311KA · Substantial damage > The termination of power to the main rotor system as a result of the malfunction of the free-wheeling sprag clutch assembly, followed by the torsional overload separation of the engine adapter shaft. Factors include trees in the area where the emergency… - [NTSB SEA00FA015](https://openairdocs.org/ntsb/SEA00FA015.md): Kaman K-1200 · Emida, ID · Accident · No injuries · Field investigation · Final report · Nov 4, 1999 · N164KA · Substantial damage > Failure of the splined engine adaptor as a result of torsional overstress. Factors include a worn freewheeling clutch assembly. - [NTSB SEA98LA065](https://openairdocs.org/ntsb/SEA98LA065.md): Kaman K-1200 · La Grande, OR · Accident · No injuries · Limited investigation · Final report · Apr 21, 1998 · N224GM · Substantial damage > The pilot's inadvertent shutdown of the engine with the FUEL/OIL shutoff switch. Contributing to the accident were: the manufacturer's inadequate location and design of the FUEL/OIL shutoff switch; the FAA's inadequate determination of the type design's… - [NTSB IAD98LA024](https://openairdocs.org/ntsb/IAD98LA024.md): Kaman K-1200 · Bloomfield, CT · Accident · Minor injuries · Limited investigation · Final report · Jan 27, 1998 · N135KA · Substantial damage > The pilot's failure to maintain control during autorotation, which resulted in an unleveled attitude touchdown, roll over, and collision with the ground. ## 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.aircraft_model_code IN ('13027LS')) ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC ``` This list as a web page: https://openairdocs.org/ntsb?model=13027LS --- 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.