Loss of control Accident Eurocopter AS 350B3e Ecureuil N390LG,
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ASN Wikibase Occurrence # 177557
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Date:Friday 3 July 2015
Time:13:39 LT
Type:Silhouette image of generic AS50 model; specific model in this crash may look slightly different    
Eurocopter AS 350B3e Ecureuil
Owner/operator:Air Methods Corp (AMC)
Registration: N390LG
MSN: 7595
Year of manufacture:2013
Total airframe hrs:487 hours
Engine model:Turbomeca Arriel 2D
Fatalities:Fatalities: 1 / Occupants: 3
Aircraft damage: Destroyed
Location:St. Anthony Summit Medical Center, Frisco, CO -   United States of America
Phase: Take off
Departure airport:Frisco, CO (91CO)
Destination airport:Gypsum, CO
Investigating agency: NTSB
Confidence Rating: Accident investigation report completed and information captured
On July 3, 2015, about 1339 mountain daylight time, an Airbus Helicopters AS350 B3e helicopter, N390LG, registered to and operated by Air Methods Corporation, lifted off from the Summit Medical Center Heliport, Frisco, Colorado, and then crashed into a parking lot; the impact point was located 360 feet southwest of the ground-based helipad. The pilot was fatally injured, and the two flight nurses were seriously injured. The helicopter was destroyed by impact forces and a postcrash fire. The flight was conducted under the provisions of 14 Code of Federal Regulations Part 135 on a company flight plan. Visual meteorological conditions prevailed at the time of the accident.

Probable Cause:
Airbus Helicopters' dual-hydraulic AS350 B3e helicopter's (1) preflight hydraulic check, which depleted hydraulic pressure in the tail rotor hydraulic circuit, and (2) lack of salient alerting to the pilot that hydraulic pressure was not restored before takeoff. Such alerting might have cued the pilot to his failure to reset the yaw servo hydraulic switch to its correct position during the preflight hydraulic check, which resulted in a lack of hydraulic boost to the pedal controls, high pedal forces, and a subsequent loss of control after takeoff. Contributing to the accident was the pilot's failure to perform a hover check after liftoff, which would have alerted him to the pedal control anomaly at an altitude that could have allowed him to safely land the helicopter. Contributing to the severity of the injuries was the helicopter's fuel system, which was not crash resistant and facilitated a fuel-fed postcrash fire.

Accident investigation:
Investigating agency: NTSB
Report number: CEN15MA290
Status: Investigation completed
Download report: Final report


Oct 2018: https://www.aspentimes.com/news/federal-aviation-administration-to-require-crash-resistant-fuel-tanks-after-frisco-flight-for-life-pilot-tragedy/


NTSB report: https://app.ntsb.gov/pdfgenerator/ReportGeneratorFile.ashx?EventID=20150703X00859&AKey=1&RType=Final&IType=MA




Revision history:

04-Jul-2015 06:06 Geno Added
04-Jul-2015 13:57 CTYONE Updated [Aircraft type, Registration, Cn]
09-Jul-2015 17:37 Geno Updated [Time, Departure airport, Destination airport, Source]
11-Jul-2015 15:55 Aerossurance Updated [Time, Narrative]
12-Jul-2015 12:14 Aerossurance Updated [Source, Narrative]
12-Jul-2015 12:18 Aerossurance Updated [Operator, Narrative]
25-Jul-2015 09:27 Aerossurance Updated [Source]
12-May-2016 15:53 Aerossurance Updated [Aircraft type, Source]
12-May-2016 15:58 Aerossurance Updated [Aircraft type]
17-Aug-2016 18:37 Aerossurance Updated [Source]
21-Dec-2016 19:30 ASN Update Bot Updated [Time, Damage, Category, Investigating agency]
28-Mar-2017 19:00 Aerossurance Updated [Source, Narrative]
19-Apr-2017 23:08 Iceman 29 Updated [Embed code]
19-Aug-2017 14:54 ASN Update Bot Updated [Operator, Other fatalities, Departure airport, Destination airport, Source, Narrative]
06-Mar-2018 11:50 Iceman 29 Updated [Time, Other fatalities, Source, Embed code, Narrative]
04-Oct-2018 18:53 Iceman 29 Updated [Source, Embed code, Narrative]
16-Feb-2020 15:37 harro Updated [Embed code, Accident report, ]
02-Jul-2020 08:06 Aerossurance Updated [Aircraft type, Operator, Location, Nature, Source, Embed code]

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