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ASN Wikibase Occurrence # 31050
Last updated: 23 July 2020
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Date:27-AUG-1997
Time:10:10 CDT
Type:Silhouette image of generic UH1 model; specific model in this crash may look slightly different
Bell UH-1B
Owner/operator:Buffalo Island Flying Service
Registration: N482SA
C/n / msn: 756
Fatalities:Fatalities: 0 / Occupants: 1
Other fatalities:0
Aircraft damage: Written off (damaged beyond repair)
Category:Accident
Location:Manila, Arkansas -   United States of America
Phase: Manoeuvring (airshow, firefighting, ag.ops.)
Nature:Agricultural
Departure airport:Manila, AR
Destination airport:Manila, AR
Investigating agency: NTSB
Narrative:
The pilot was applying pesticide to a cotton field when the outboard 9 feet of one main rotor blade separated in flight, resulting in the main rotor system separating from the main transmission mast.

The in-flight separation of the main rotor blade was due to fatigue cracks emanating from a puncture through the lower surface of the blade in the leading edge area. The shape of the puncture, the crater mark above the puncture, and surrounding areas containing heavy deposits of lead residue indicated a bullet had entered the blade. The puncture had been repaired; however, manufacturer's specifications stated that this type damage is nonrepairable and the blade should be scrapped.

In July 1995, the rotor blade was modified. During the modification process, the blade was inspected for damage. In April 1997, an AD requiring inspection of the blade was complied with.

Sources:

http://dms.ntsb.gov/aviation/AccidentReports/eod0tkqlnu3y2snhniqdmz551/N10312011120000.pdf
NTSB


Revision history:

Date/timeContributorUpdates
27-Sep-2008 01:00 ASN archive Added
31-Oct-2011 12:00 Dr. John Smith Updated [Time, Total fatalities, Total occupants, Other fatalities, Location, Country, Phase, Nature, Departure airport, Destination airport, Source, Damage, Narrative]
01-Jul-2016 16:40 Honcho 64 Updated [Operator, Source, Narrative]

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