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ASN Wikibase Occurrence # 20339
Last updated: 5 September 2020
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Type:Silhouette image of generic EC35 model; specific model in this crash may look slightly different
Eurocopter EC 135P2
Owner/operator:Lehigh Valley Medevac
Registration: N238AM
C/n / msn: 0565
Fatalities:Fatalities: 0 / Occupants: 3
Aircraft damage: Substantial
Location:Pottsville, PA -   United States of America
Phase: Take off
Departure airport:Pottsville, PA (PS95)
Destination airport:Wayne Township, PA
Investigating agency: NTSB
After taking off on a helicopter emergency medical service mission, the twin-engine helicopter climbed approximately 75 feet. The pilot lowered the nose, but the helicopter would not climb or accelerate normally. The pilot saw 125 percent on one of his gauges, but was not sure which gauge it was as he was looking outside. A "gong" sounded, similar to what the pilot had heard when doing "max takeoffs," but he did not hear an engine-out horn or see any warning lights. The pilot also noticed that one torque indication was declining to "near zero" percent, and the helicopter began to yaw. The pilot was able to correct the yawing moment with anti-torque inputs, and remembered lowering the collective and "pulling pitch" before the helicopter impacted the ground in a level attitude. The No. 1 engine was running as the pilot exited the helicopter, but the No. 2 engine was not. Examinations at the accident site revealed that the helicopter, after lifting off from the heliport, flew out of ground effect over down-sloping terrain, settled, then struck a parked semi-trailer about 80 feet below the heliport. No preimpact mechanical anomalies of the helicopter, engines, or engine switches were found. As part of the pre-takeoff confirmation check, the pilot was required to ensure that both main engine switches were in the FLIGHT position; however, onboard recorded data revealed that the No. 2 main engine switch was in the IDLE position during the takeoff.
Probable Cause: The pilotís failure to ensure that both engine switches were in the FLIGHT position for takeoff.




Revision history:

31-May-2008 23:23 Fusko Added
01-Jun-2008 11:35 Fusko Updated
02-Jun-2008 11:14 harro Updated
18-Aug-2010 15:35 TB Updated [Aircraft type, Source, Narrative]
05-Mar-2013 11:21 TB Updated [Date, Time, Aircraft type, Operator, Departure airport, Destination airport, Source, Narrative]
07-May-2016 09:18 Aerossurance Updated [Aircraft type, Departure airport, Narrative]
07-May-2016 09:19 Aerossurance Updated [Source]
21-Dec-2016 19:14 ASN Update Bot Updated [Time, Damage, Category, Investigating agency]
21-Dec-2016 19:16 ASN Update Bot Updated [Time, Damage, Category, Investigating agency]
21-Dec-2016 19:20 ASN Update Bot Updated [Time, Damage, Category, Investigating agency]
03-Dec-2017 10:50 ASN Update Bot Updated [Aircraft type, Operator, Other fatalities, Nature, Departure airport, Source, Narrative]

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