Hiller UH 12 Safety Record
Complete NTSB accident and incident history. 16 events recorded from 1983 to 2020.
| Date | Location | Reg# | Severity | Damage | Probable Cause |
|---|---|---|---|---|---|
| Jul 17, 2020 | Mehama, OR | N2297W | Fatal (1) | destroyed |
An in-flight separation of a tail rotor blade due to fatigue cracking and overstress, which resulted in a loss of directional control and subsequent g…An in-flight separation of a tail rotor blade due to fatigue cracking and overstress, which resulted in a loss of directional control and subsequent ground impact. |
| Feb 01, 2020 | Dinosaur, CO | N7173S | Incident | substantial |
Failure of a S4 compressor blade due to a fatigue crack that likely initiated at a corrosion pit. Contributing to the accident was maintenance personn…Failure of a S4 compressor blade due to a fatigue crack that likely initiated at a corrosion pit. Contributing to the accident was maintenance personnel’s failure to detect the corrosion pits during maintenance. |
| Oct 14, 2019 | Susanville, CA | N131HA | Minor | substantial |
A partial loss of engine power due to multiple overtemperature events and a hot start event, which resulted in thermally damaged internal components o…A partial loss of engine power due to multiple overtemperature events and a hot start event, which resulted in thermally damaged internal components of the engine. Contributing to the accident was the lack of suitable terrain on which to perform the forced landing. |
| Sep 20, 2018 | Frankfort, KS | N1349A | Incident | substantial |
The ground crewmember's improper grabbing of the hovering helicopter's skid during an external load hook-up, which resulted in the helicopter descendi…The ground crewmember's improper grabbing of the hovering helicopter's skid during an external load hook-up, which resulted in the helicopter descending and the main rotors striking ground equipment. |
| Sep 11, 2017 | Griffith, IN | N2686 | Incident | substantial | The loss of tail rotor thrust due to a failed tail rotor driveshaft, which resulted in a loss of tail rotor control and a hard landing. |
| Aug 23, 2016 | Cokeville, WY | N97TH | Minor | substantial | Failure of the control rotor cuff due to fatigue. |
| May 27, 2015 | Wasco, CA | N138HA | Fatal (1) | substantial | An in-flight impact with terrain for reasons that could not be determined based on available evidence. |
| Mar 29, 2015 | Firebaugh, CA | N130HA | Incident | substantial |
A loss of engine power for reasons that could not be determined because postaccident examination of the engine did not reveal any anomalies that would…A loss of engine power for reasons that could not be determined because postaccident examination of the engine did not reveal any anomalies that would have precluded normal operation. |
| Aug 25, 2014 | Cape May Court House, NJ | N4035A | Minor | substantial |
The mechanic’s failure to detect excessive wear on the engine’s lateral snubber vibration mount during the latest annual inspection, which resulted in…The mechanic’s failure to detect excessive wear on the engine’s lateral snubber vibration mount during the latest annual inspection, which resulted in an in-flight engine failure and a subsequent forced landing. |
| Jul 26, 2014 | Wadesboro, NC | N107HA | Incident | substantial |
A partial loss of engine power due to the failure of the No. 2 engine accessory gearbox bearing for reasons that could not be determined based on the …A partial loss of engine power due to the failure of the No. 2 engine accessory gearbox bearing for reasons that could not be determined based on the available information. |
| Dec 09, 2013 | Chowchilla, CA | N36MV | Incident | substantial | The failure of the torsional drive coupling, which resulted in a loss of drive to the main rotor system during low-altitude flight. |
| Aug 31, 2010 | Kamiah, ID | N67264 | Fatal (3) | substantial |
In-flight impact of a passenger's metal clipboard with the helicopter’s tail rotor, which resulted in destruction of the tail rotor and subsequent los…In-flight impact of a passenger's metal clipboard with the helicopter’s tail rotor, which resulted in destruction of the tail rotor and subsequent loss of control of the helicopter. The original location of the clipboard and how it became free could not be determined. |
| Sep 22, 2005 | Five Points, CA | N141HA | Incident | substantial | The pilot's failure to refuel the helicopter, which resulted in fuel exhaustion. |
| Sep 07, 1986 | GONZALES, CA | N149HA | Incident | substantial | Investigation pending |
| Jun 26, 1984 | DEERFIELD, WI | N62362 | Minor | substantial | Investigation pending |
| Jul 08, 1983 | LANCASTER, CA | N64861 | Incident | substantial | Investigation pending |