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ASN Wikibase Occurrence # 178780
Last updated: 24 September 2021
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Type:Silhouette image of generic B412 model; specific model in this crash may look slightly different
Bell 412
Owner/operator:County Of Los Angeles Fire Department
Registration: N412LA
MSN: 33061
Fatalities:Fatalities: 0 / Occupants: 3
Aircraft damage: Substantial
Location:near the Rio Hondo River in Montebello, California -   United States of America
Phase: Unknown
Nature:Fire fighting
Departure airport:Pacoima, CA (WHP)
Destination airport:Whittier, CA
Investigating agency: NTSB
According to the pilot of the public use, multi-engine helicopter, he performed an autorotation and landing after exhausting the helicopter's fuel supply in flight. The pilot reported that while acting as the Helicopter Commander during a brush fire containment mission, the complexities involved with managing the fire increased and as a result, the pilot stated, "I failed to re-adjust my station time appropriately for my aircraft." He reported that both engines lost power and he executed an autorotation and touchdown onto down sloping terrain. Upon impact with the ground, the main rotor blades flexed down and severed the tail boom. The helicopter sustained substantial damage to the tail boom, the main rotor and tail rotor blades, the main rotor drive system and the primary flight controls.

The pilot reported no mechanical failures or anomalies prior to flight that would have prevented normal operation.
Probable Cause: The pilot's failure to appropriately monitor the helicopter's fuel supply, resulting in fuel exhaustion, loss of engine power, and an autorotation with a hard landing.



Accident investigation:
Investigating agency: NTSB
Status: Investigation completed
Download report: Final report

Revision history:

18-Aug-2015 11:35 rotorspot Added
18-Aug-2015 18:42 Aerossurance Updated [Total occupants, Source, Narrative]
31-Aug-2015 14:31 Aerossurance Updated [Source]
15-Nov-2015 23:59 Aerossurance Updated [Narrative]
21-Dec-2016 19:30 ASN Update Bot Updated [Time, Damage, Category, Investigating agency]
01-Dec-2017 15:07 ASN Update Bot Updated [Operator, Other fatalities, Nature, Departure airport, Destination airport, Source, Narrative]

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