NTSB Identification: ANC83FA032.
The docket is stored on NTSB microfiche number 20996.
Accident occurred Thursday, January 13, 1983 in CORDOVA, AK
Aircraft: BELL 206B, registration: N74PR
Injuries: 1 Fatal,1 Serious.
NTSB investigators either traveled in support of this investigation or conducted a significant amount of investigative work without any travel, and used data obtained from various sources to prepare this aircraft accident report.
THE HELICOPTER WAS ON A RESCUE/RECOVERY FLT FOR THE ALASKA STATE TROOPERS WITH THE PLT & A STATE TROOPER ON BOARD. THEY DEPARTED IN VARIABLE WX CONDITIONS TO RESCUE THE PLT OF ANOTHER ACFT. REPORTEDLY, SNOW WAS FALLING IN THE SEARCH AREA & THE WINDS WERE GUSTING BETWEEN 70 & 90 MPH. ACCORDING TO THE PLT, THE ENG FLAMED OUT DURING A TURN AT APRX 1000 FT AGL. HE BEGAN AN AUTOROTATION & TRANSMITTED A DISTRESS CALL. DURING AN APCH TO A FROZEN RIVER, HE ENCOUNTERED A TOTAL WHITEOUT CONDITION IN FOG & BLOWING SNOW AT APRX 75 TO 100 FT AGL. HE GUESSED AT THE ALT TO APPLY COLLECTIVE PITCH TO STOP THE DESCENT & SAID THAT HE EXPERIENCED VERTIGO DURING THE LAST PART OF THE DESCENT. THE ACFT IMPACTED IN A LEFT, NOSE DOWN ATTITUDE & ROLLED OVER. THE OCCUPANTS WERE UNABLE TO REACH THEIR SURVIVAL GEAR IN THE WRECKAGE. WX DELAY THEIR RESCUE & THE PASSENGER DIED FROM HYPOTHERMIA. THE ACFT WAS EQUIPPED WITH PARTICLE SEPARATORS, BUT NO SNOW DEFLECTORS WERE INSTALLED. NO MECHANICAL ENG FAILURE WAS FOUND, BUT A COATING OF ICE WAS FOUND IN THE ENG INLET.
The National Transportation Safety Board determines the probable cause(s) of this accident to be:AIRCRAFT PREFLIGHT..INADEQUATE..PILOT IN COMMAND
The National Transportation Safety Board determines the probable cause(s) of this accident to be:MISCELLANEOUS EQUIPMENT..NOT USED..PILOT IN COMMAND
The National Transportation Safety Board determines the probable cause(s) of this accident to be:FUEL SYSTEM,RAM AIR/INDUCTION AIR..ICE
AUTOROTATION..PERFORMED..PILOT IN COMMAND
WEATHER CONDITION..HIGH WIND
TERRAIN CONDITION..SNOW COVERED
FLIGHT INTO KNOWN ADVERSE WEATHER..INITIATED..PILOT IN COMMAND
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