# Accident 20191013019549A: Hiller UH-12E, Susanville, CA, October 13, 2019

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: October 13, 2019, 15:40 local time
- Place: Susanville, CA
- Damage: Substantial damage
- Phase of flight: Maneuver
- Operating rules: Agricultural (Part 137)
- Operator: GEVL
- Location: 40.5561° N, 120.8392° W: From the FAA
- Nearby events: https://openairdocs.org/map.md?lat=40.5561&lon=-120.8392&mi=10
- Aircraft: N131HA, a cancelled registration (https://openairdocs.org/deregistered/N131HA-2020-01-09) (OpenAirDocs)
- Registry model: Hiller UH-12E (registry code 4360122, https://openairdocs.org/model/hiller-uh-12e) (OpenAirDocs)
- Registry engine: Amateur-built UNKNOWN ENG (registry code 99999, https://openairdocs.org/engine/amateur-built-unknown-eng) (OpenAirDocs)
- Reported make and model: HILLER UH-12E
- Reported engine: ALLISON 250
- People aboard: 1
- Fatal injuries: 0
- Other injuries: 1
- NTSB investigation: [NTSB WPR20LA007](https://openairdocs.org/ntsb/WPR20LA007) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20191013019549A

## Narrative

As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^.

WHILE FINISHING A SPRAY APPLICATION IN STEEP LOGGING TERRAIN THE PILOT HEARD  2 LOUD COMPRESSOR STALLS WITH A SLIGHT YAW TO LEFT. ENGINE POWER WAS DECREASED AND THE HELICOPTER WAS MANEUVERED DOWNSLOPE TO ALLOW FOR ENGINE RECOVERY.  THE COMPRESSOR STALLS CONTINUED AND THE ENGINE PERFORMANCE BEGAN TO DECAY.  THE PILOT SELECTED A LANDING SITE AND NOSED THE HELICOPTER  UPHILL WHILE APPLYING COLLECTIVE PITCH TO CUSHION THE LANDING. UPON IMPACT,  THE MAIN ROTOR BLADES  CONTACTED THE GROUND AND HELICOPTER ROLLED CLOCKWISE DOWNHILL RESTING NOSE DOWN ON LEFT SIDE WITH THE ENGINE RUNNING.

## The NTSB's investigation of this event (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB WPR20LA007](https://openairdocs.org/ntsb/WPR20LA007), Oct 14, 2019: Hiller UH 12E (N131HA), Susanville, CA, substantial damage. Probable cause: 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…

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. For accidents, the NTSB's own investigation is the fuller record.

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