ASN Wikibase Occurrence # 40798
Last updated: 21 September 2014
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Date:28-JUN-1984
Time:1319
Type:Silhouette image of generic H269 model; specific model in this crash may look slightly different
Hughes 269B
Owner/operator:The Geradin
Registration: N9400F
C/n / msn: 124-0145
Fatalities:Fatalities: 2 / Occupants: 2
Other fatalities:0
Airplane damage: Written off (damaged beyond repair)
Location:Palos Verde Est, CA -   United States of America
Phase: Manoeuvring (airshow, firefighting, ag.ops.)
Nature:Private
Departure airport:Torrance, CA (TOA)
Destination airport:
Narrative:
GND WITNESSES OBSVD HELICOPTER INTO NORMAL TURN AT 500 FT AGL FOLLOWED BY A VIOLENT RT TURN. DURING THE VIOLENT TURN THE TAIL ROTOR ASSY SEPARATED & THE MAIN ROTOR BLADES CONED UPWARDS. THE HELICOPTER WENT INTO A NEAR VERTICAL DESCENT & CRASHED. WRECKAGE EXAM DISCLOSE THE TAIL ROTOR HUB TEETERING FORK BOLT & BOTH PITCH CHG LNKS SUSTAINED OVLD FRACTURES. THE FORK ASSY SHOWED EXTENSIVE BLADE IMPACT MARKS. BOTH TAIL ROTOR BLADES TRAIL EDGES EXHIBITED ABRASIVE SIGNATURES & WERE DELAMINATED. THE TAIL SKID SEPARATED & WAS FRACTURED @ MIDSPAN & ITS LT SIDE SHOWED TAIL ROTOR BLADE RUB MARKS. METAL & CHEM ANALYSIS DISCLSD THE EPOXY BONDING MATERIAL WAS WEAKENED BY A FOREIGN SUBSTANCE. BOTH TAIL ROTOR BLADES WERE XRAYED AND PAINTED 25 FLT HRS PRIOR TO THE ACCIDENT. NO EVIDENCE WAS FOUND TO INDICATE THE PILOT HAD FLOWN A HELICOPTER WITHIN 11 MONTHS PRECEDING THE ACCIDENT. THE PLT HAD ACCUMULATED 50 HELICOPTER FLT HRS, 15 OF WHICH WERE AS PIC. CAUSE:

Sources:
NTSB: http://www.ntsb.gov/ntsb/brief.asp?ev_id=20001214X39978


Revision history:

Date/timeContributorUpdates
24-Oct-2008 10:30 ASN archive Added
Number of views: 665

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