ASN Wikibase Occurrence # 131588
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Date: | Tuesday 17 September 1991 |
Time: | 17:30 |
Type: | Robinson R22 Mariner |
Owner/operator: | Airswell, Inc. |
Registration: | N2306C |
MSN: | 1935M |
Year of manufacture: | 1991 |
Fatalities: | Fatalities: 0 / Occupants: 1 |
Aircraft damage: | Destroyed |
Category: | Accident |
Location: | Lewisville Lake, Lewisville, Denton County, NW of Dallas, Texas -
United States of America
|
Phase: | Initial climb |
Nature: | Ferry/positioning |
Departure airport: | Dallas/Fort Worth International Airport (DFW/KDFW) |
Destination airport: | Addison Airport, Addison, Dallas County, Texas.(ADS/KADS) |
Investigating agency: | NTSB |
Confidence Rating: | Accident investigation report completed and information captured |
Narrative:DURING A DAY FERRY FLIGHT, THE PRIVATE PILOT EXPERIENCED BINDING OF THE FLIGHT CONTROLS AND LANDED THE HELICOPTER ON A LAKE. AFTER MOVING THE CONTROLS WHILE FLOATING ON THE SURFACE, THE BINDING WENT AWAY. AFTER HE TOOK OFF AGAIN, THE CONTROLS WOULD NOT RESPOND TO INPUTS AND BOUND UP. THE HELICOPTER DESCENDED OUT OF CONTROL AND IMPACTED THE WATER.
EXAMINATION OF THE HELICOPTER REVEALED NUMEROUS PIECES OF HARDWARE, WASHERS, NUTS, AND COTTER KEYS ON THE DECK IMMEDIATELY BEHIND THE TRANSMISSION AND BELOW THE FLIGHT CONTROLS. THE HELICOPTER HAD A TOTAL OF 20 HOURS SINCE NEW. NO SUBSEQUENT MAINTENANCE HAD BEEN PERFORMED.
PROBABLE CAUSE: LOSS OF CONTROL DUE TO FOREIGN OBJECT DAMAGE INDUCED BINDING FLIGHT CONTROLS. A FACTOR WAS IMPROPER MAINTENANCE.
Sources:
1. NTSB Identification: FTW91LA162 at
https://www.ntsb.gov/investigations/_layouts/ntsb.aviation/brief.aspx?ev_id=20001212X18098&key=1 2. FAA:
http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=2306C 3.
http://www.griffin-helicopters.co.uk/accidentdetails.aspx?accidentkey=1154 4.
https://en.wikipedia.org/wiki/Lewisville_Lake Revision history:
Date/time | Contributor | Updates |
20-Sep-2016 17:17 |
Dr.John Smith |
Updated [Time, Aircraft type, Location, Departure airport, Destination airport, Source, Narrative] |
20-Sep-2016 17:20 |
Dr.John Smith |
Updated [Location, Source] |
21-Dec-2016 19:25 |
ASN Update Bot |
Updated [Time, Damage, Category, Investigating agency] |
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