ASN Wikibase Occurrence # 377757
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| Date: | Monday 4 February 1985 |
| Time: | 09:53 LT |
| Type: |  Aerospatiale AS 355F-1 |
| Owner/operator: | Petroleum Helicopters Inc. |
| Registration: | N5796A |
| MSN: | 5156 |
| Total airframe hrs: | 3158 hours |
| Engine model: | Allison 250-C20F |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Sabine Pass, TX -
 United States of America
|
| Phase: | En route |
| Nature: | Ferry/positioning |
| Departure airport: | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
WHILE EN ROUTE AT AN ALT OF 500 TO 700 FT, THE #1 ENG SPOOLED DOWN. THE PLT SECURED THE #1 ENG & TURNED BACK TOWARD THE HELIPORT TO MAKE A SINGLE ENG LANDING. HOWEVER, HE COULD NOT MAINTAIN LEVEL FLT & THE ROTOR RPM BEGAN DROPPING. THE PLT NOTED THAT THE #2 ENG HAD HI TEMP (ABOVE 900 DEGS) & LOW TORQUE. SUBSEQUENTLY, HE INFLATED THE POPOUT FLOATS & MADE A PARTIAL POWER LANDING IN A MARSH. DUE TO LOW ROTOR RPM, THE HELICOPTER TOUCHED DOWN HARD & WAS DAMAGED. THE #1 ENG WAS REMOVED & CHECKED IN A TEST CELL & IT OPERATED NORMALLY. THE #2 ENG WAS DAMAGED; HOWEVER, IT'S FUEL MANAGEMENT SYS CHECKED NORMAL. THE ACFT WAS BEING FLOWN IN RAIN SHOWERS WITHOUT USING THE ENG ANTI-ICE. OPERATOR PERSONNEL SUSPECTED THAT INLET ICING CAUSED THE #1 ENG TO FLAME OUT & THE #2 ENG TO LOSE PARTIAL POWER. A WITNESS ESTIMATED THE SURFACE AIR TEMP WAS 33 DEGS.
Probable Cause:
Accident investigation:
 |
|
Sources:
NTSB FTW85LA111
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 30-Mar-2024 16:06 | ASN Update Bot | Added |
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