ASN Wikibase Occurrence # 384483
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| Date: | Tuesday 4 May 1982 |
| Time: | 16:00 LT |
| Type: |  Hughes 369HS |
| Owner/operator: | Private |
| Registration: | N9239F |
| MSN: | 350723S |
| Year of manufacture: | 1975 |
| Total airframe hrs: | 239 hours |
| Engine model: | Allison 250-C20 |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Tok, AK -
 United States of America
|
| Phase: | Initial climb |
| Nature: | Unknown |
| Departure airport: | Mt. Neuberger, AK (C ) |
| Tanacross, AK (C ) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE PILOT WAS CONDUCTING A NON-REVENUE, SLING-LOAD OPERATION ON MT NEUBERER, WHILE DONATING HIS SERVICES TO TOK COMMUNITY TV, INC. HE STATED THAT HE WAS LIFTING THREE EMPTY PROPANE BOTTLES FROM A SNOW FIELD WHEN HE NOTICED THE AUTO RELIGHT LAMP FLASH. HE STATED THAT ALMOST IMMEDIATELY, THE ENGINE-OUT LIGHT AND HORN ACTIVATED AND THE LOAD MAY HAVE CONTACTED THE GROUND. THE HELICOPTER BEGAN TO ACCELERATE FORWARD DESPITE HIS AFT CYCLIC CONTROL INPUT. HE STATED THAT HE PUSHED THE ELECTRIC SLING RELEASE SWITCH. HOWEVER, THE HELICOPTER CONTINUED TO ACCELERATE FORWARD AND DOWN. IT HIT THE GROUND IN A VERTICLE NOSE DOWN ATTITUDE WHILE HE WAS APPLYING ALMOST FULL AFT CYCLIC. THE ELEVATION WAS ABOUT 5800 FT. THE ELECTRIC SLING LOAD LATCH WAS FOUND IN THE CLOSED POSITION. THE ENGINE WAS REMOVED AND CHECKED ON A TEST STAND. SEVERAL HUNG STARTS OCCURRED AT 45 TO 50% UNTIL A SLIGHT ADJUSTMENT WAS MADE TO INCREASE FUEL FLOW, THEN THE ENGINE OPERATED WELL, BUT ABOUT 5% BELOW MAX POWER. PILOT LACKED FAA APPROVAL, EXT LOAD OPN
Probable Cause:
Accident investigation:
 |
|
Sources:
NTSB ANC82DA039
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 03-Apr-2024 11:39 | ASN Update Bot | Added |
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