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ASN Wikibase Occurrence # 172615
Last updated: 22 August 2021
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Date:31-DEC-2014
Time:13:30 LT
Type:Silhouette image of generic H500 model; specific model in this crash may look slightly different
MD Helicopters MD530F (369FF)
Owner/operator:Las Vegas Metropolitan Police Department
Registration: N530KK
MSN: 0174FF
Fatalities:Fatalities: 0 / Occupants: 2
Aircraft damage: Substantial
Location:Las Vegas, NV -   United States of America
Phase: Manoeuvring (airshow, firefighting, ag.ops.)
Nature:Aerial patrol
Departure airport:North Las Vegas, NV (KVGT)
Destination airport:North Las Vegas, NV (KVGT)
Narrative:
The commercial pilot was conducting a local public flight. He reported that, about 7 minutes into the flight, while the helicopter was orbiting over a fixed area, he noticed the engine and rotor rpm decrease. The pilot rolled the helicopter out of the orbit, and the engine and rotor rpm stabilized momentarily at 97%. The pilot then attempted to increase the engine and rotor rpm while turning the helicopter toward a nearby airport. During the maneuver, the engine and rotor rpm decreased rapidly. The pilot entered an autorotation and executed an emergency landing. The helicopter then landed hard, and the tail impacted the ground and separated from the airframe.
A postaccident examination of the airframe and the engine revealed no anomalies that would have precluded normal operation. During an engine test run, the engine produced rated power. Examination of the fuel system revealed no anomalies, and a fuel sample taken from the helicopter tested positive as jet fuel (Jet A). The reason for the loss of engine power could not be determined.

Probable Cause: A total loss of engine power during cruise flight for reasons that could not be determined because postaccident examination and testing did not reveal any anomalies that would have precluded normal operation.

Sources:

NTSB

Accident investigation:
cover
  
Investigating agency: 
Status: Investigation completed
Duration:
Download report: Final report
Location


Revision history:

Date/timeContributorUpdates
01-Jan-2015 09:31 gerard57 Added
01-Jan-2015 09:33 harro Updated [Aircraft type, Registration, Cn, Operator]
01-Jan-2015 18:13 Aerossurance Updated [Nature, Source, Narrative]
02-Jan-2015 05:10 Geno Updated [Location, Departure airport, Destination airport, Source]
02-Jan-2015 18:40 Geno Updated [Source]
04-Jan-2015 20:57 Aerossurance Updated [Source]
10-Jan-2015 00:29 Geno Updated [Time, Phase, Source, Narrative]
04-May-2015 15:35 TB Updated [Aircraft type, Location]
21-Dec-2016 19:28 ASN Update Bot Updated [Time, Damage, Category, Investigating agency]
11-Oct-2017 07:36 ASN Update Bot Updated [Operator, Other fatalities, Nature, Departure airport, Destination airport, Source, Narrative]
27-May-2018 09:29 Aerossurance Updated [Time, Operator, Nature]

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