ASN Wikibase Occurrence # 40795
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| Date: | Wednesday 15 November 1989 |
| Time: | 13:00 |
| Type: |  Hughes 269C |
| Owner/operator: | Helicopter Enterprises |
| Registration: | N9592F |
| MSN: | 440296 |
| Year of manufacture: | 1974 |
| Total airframe hrs: | 3180 hours |
| Engine model: | LYCOMING HIO-360-D1A |
| Fatalities: | Fatalities: 1 / Occupants: 1 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Estacada, OR -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | External load operation |
| Departure airport: | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE HELICOPTER WAS BEING USE IN AN EXTERNAL LOAD OPN TO MOVE CHRISTMAS TREES FROM A FIELD TO A DROP ZONE (DZ) FOR LOADING ON A TRUCK. DURING AN APCH TO THE DZ, THE PLT DID NOT MAINTAIN SUFFICIENT ALTITUDE OR CLEARANCE TO KEEP THE LOAD CLEAR OF OBSTRUCTIONS. SUBSEQUENTLY, SHE LOST CONTROL OF THE HELICOPTER & IT TRAVELED 100 TO 200 FT BACKWARDS. IT THEN HIT THE GROUND TAIL 1ST, ROLLED OVER & WAS EXTENSIVELY DAMAGED. TREES WERE SCATTERED BETWEEN THE OBJECT & THE MAIN WRECKAGE. AN EXAM REVEALED THE PLT HAD ONLY A MANUAL MEANS OF RELEASING THE LOAD AT THE HELICOPTER. THE ELECTRICAL RELEASE SYS HAD BEEN REWIRED TO PROVIDE POWER TO THE BOTTOM HOOK ONLY. ONE OF THE GROUND PSNL RPRTD THE HOOK HAD BEEN MALFUNCTIONING. THE PLT HAD 5 HRS OF DUAL TIME & 8 HRS OF PLT-IN-COMMAND TIME IN EXTERNAL LOAD OPNS; HOWEVER, SHE DID NOT POSSESS THE REQUIRED LETTER OF COMPETENCY FOR THIS OPN. CAUSE: THE PILOT MISJUDGED CLEARANCE BETWEEN HER EXTERNAL LOAD AND THE OBSTRUCTION. FACTORS RELATED TO THE ACCIDENT WERE: THE OBSTRUCTION, IMPROPER MAINTENANCE AND MODIFICATION OF THE EXTERNAL LOAD LINE/HOOK BY THE OPERATOR, FAILURE OF THE PILOT TO JETTISON THE EXTERNAL LOAD, AND A FAILURE OF THE OPERATOR MANAGEMENT TO ASSURE THE PILOT HAD RECEIVED ADEQUATE TRAINING/CERTIFICATION.
Sources:
NTSB: http://www.ntsb.gov/ntsb/brief.asp?ev_id=20001213X29884
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 24-Oct-2008 10:30 | ASN archive | Added |
| 21-Dec-2016 19:23 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
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