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ASN Wikibase Occurrence # 30255
Last updated: 21 November 2017
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Time:14:37 PST
Type:Silhouette image of generic R44 model; specific model in this crash may look slightly different
Robinson R44
Owner/operator:Hale Properties LLC
Registration: N999EV
C/n / msn: 0667
Fatalities:Fatalities: 0 / Occupants: 2
Other fatalities:0
Airplane damage: Written off (damaged beyond repair)
Location:Palo Alto, California -   United States of America
Phase: Approach
Departure airport:San Carlos Airport, San Carlos, California (KSQL)
Destination airport:Palo Alto, California
Investigating agency: NTSB
On February 2, 2000, at 14:37 hours PST (Pacific Standard Time), a Robinson R44 helicopter, N999EV, was substantially damaged during a practice auto-rotation at Palo Alto, California. Neither the commercial rated pilot nor the passenger was injured. The personal flight was operated by the pilot under 14 CFR Part 91. No flight plan was filed. Visual meteorological conditions prevailed for the operation that originated at San Carlos, California, at 14:27 PST.

The pilot reported that during the auto-rotation the engine had been at idle for an extended period. He said he did not think he was going to make the runway so he added power. The engine failed to respond and the tail stinger contacted the ground, resulting in the separation of the tail boom. The pilot pulled collective pitch; the helicopter briefly became airborne and spun violently to the right. The pilot maintained the helicopter in a level attitude and the landed hard. After the main rotor stopped rotating, the pilot and passenger exited the helicopter.

The pilot told the Federal Aviation Administration inspector on scene that he did not use carburetor heat during the auto-rotation. According to the Palo Alto METAR, the temperature was 64 degrees Fahrenheit and the dew point was 52 degrees Fahrenheit. Reference to a carburetor icing probability chart revealed that this temperature and dew point were in an area of the graph annotated "moderate icing-cruise power or serious icing-glide power."


1. NTSB Identification: LAX00LA086 at
2. FAA:

Revision history:

27-Sep-2008 01:00 ASN archive Added
17-Dec-2011 22:56 Dr. John Smith Updated [Time, Operator, Total occupants, Total fatalities, Other fatalities, Location, Country, Phase, Nature, Departure airport, Destination airport, Source, Damage, Narrative]
19-Aug-2016 18:48 Dr.John Smith Updated [Departure airport, Destination airport, Source, Narrative]

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