Aircraft Accident/Incident Report

Sabine Pass, Texas 77655
Monday, February 4, 1985 8:53 CST

NTSB Narrative Summary Released at Completion of Accident

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.

NTSB Probable Cause Narrative

Not Yet Reported

Event Information

Type of Event Accident
Event Date 2/4/1985
Event Day of the Week Monday
Time of Event 853
Event Time Zone Central Standard Time
Event City SABINE PASS
Event State TEXAS
Event Country --
Zipcode of the event site 77655
Event Date Year 1985
Event Date Month 2
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport
Event Location Nearest Airport ID
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles 0
Degrees magnetic from airport 0
Airport Elevation 0
Weather Briefing Completeness Not pertinent
Investigator's weather source Witness
Time of the weather observation 0
Direction of event from weather observation facility (degrees) 0
Weather Observation Facility ID
Elevation of weather observation facility 0
Distance of event from weather observation facility (units?) 0
Time Zone of the weather observation
Lighting Conditions Day
Lowest Ceiling Height 800
Lowest Non-Ceiling Height 0
Sky/Lowest/Cloud Conditions Unknown
Sky Condition for Lowest Ceiling Broken
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 1
Air Temperature at event time (in degrees celsius) 1
Dew Point at event time (in degress fahrenheit) -1
Wind Direction (degrees magnetic) 60
Variable Wind Indicator Unknown
Wind Speed (knots) 13
Wind Velocity Indicator Unknown
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 30
Density Altitude (feet) --
Intensity of Precipitation Moderate
METAR weather report --
Event Highest Injury None
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal --
Injury Total Minor --
Injury Total None 1
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 425
NTSB Notification Source --
NTSB Notification Date Feb 4 1985 12:00AM
NTSB Notification Time 1100
Fiche Number and/or location -used to find docket information 27707
Date of most recent change to record Jan 2 2001 9:14AM
User who most recently changed record dbo
Basic weather conditions Instrument Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N5796A
NTSB Number FTW85LA111
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed Company VFR
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name AEROSPATIALE
Aircraft Model AS 355F-1
Aircraft Series Identifier AS 355F-1
Aircraft Serial Number 5156
Certified Max Gross Weight 4200
Aircraft Category Helicopter
Aircraft Registration Class U.S. Registered/U.S. Soil
Aircraft is a homebuilt? No
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 7
Number of Engines 2
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection AAIP
Date of Last Inspection --
Airframe hours since last inspection 28
Airframe Hours 3158
ELT Installed No
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name PETROLEUM HELICOPTERS INC.
Aircraft Owner Street Address P.O. BOX 90808
Aircraft Owner City LAFAYETTE
Aircraft Owner State LA
Aircraft Owner Country
Aircraft Owner Zipcode 70509
Operator is an individual? --
Operator Name
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address
Operator City
Operator State
Operator Country
Operator Zip code
Operator Code
Owner has at least one certificate Yes - certificate holder
Other Operator of large aircraft? No
Certified for Part 133 or 137 Operation Unknown
Operator Certificate Number --
Indicates whether an air carrier operation was scheduled or not --
Indicates Domestic or International Flight --
Operator carrying Pax/Cargo/Mail --
Type of Flying (Per_Bus / Primary) Positioning
Second Pilot on Board No
Departure Point Same as Event Yes
Departure Airport Code
Departure City
Departure State
Departure Country
Departure Time 850
Departure Time Zone CST
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code
Destination City
Destination State
Destination Country
Specific Phase of Flight Landing
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:36AM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 0
Runway Length 0
Runway Width 0
Sight Seeing flight No
Air Medical Flight No
Medical Flight --