Accident Aerospatiale AS 350BA N911MV,
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ASN Wikibase Occurrence # 353493
 
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Date:Sunday 13 December 1998
Time:19:45 LT
Type:Silhouette image of generic AS50 model; specific model in this crash may look slightly different    
Aerospatiale AS 350BA
Owner/operator:Shannon Hospital
Registration: N911MV
MSN: 2262
Year of manufacture:1989
Total airframe hrs:4364 hours
Engine model:Turbomeca ARIEL-1B
Fatalities:Fatalities: 0 / Occupants: 2
Aircraft damage: Substantial
Category:Accident
Location:San Angelo, TX -   United States of America
Phase: Take off
Nature:Training
Departure airport:(KSJT)
Destination airport:
Investigating agency: NTSB
Confidence Rating: Accident investigation report completed and information captured
Narrative:
The instructor pilot-command (PIC) of the twin-engine helicopter was giving a newly hired pilot a check out and instruction. After completion of a practice 'hydraulic system off' landing, the PIC performed a normal takeoff (with hydraulics 'ON'). During the takeoff, the helicopter rolled over to the left, and the main rotor blades impacted the ground. The PIC reported that it felt like a 'hydraulic hardover.' Examination of the hydraulic system after the accident did not reveal any defects or anomalies that would validate a hydraulic hardover.

Probable Cause: the rollover during take off for undetermined reasons.

Accident investigation:
cover
  
Investigating agency: NTSB
Report number: FTW99LA048
Status: Investigation completed
Duration: 2 years and 7 months
Download report: Final report

Sources:

NTSB FTW99LA048

History of this aircraft

Other occurrences involving this aircraft
26 April 2016 RDPL-34162 Lao Skyway 0 near Long Tieng sub

Location

Revision history:

Date/timeContributorUpdates
10-Mar-2024 07:23 ASN Update Bot Added

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