NTSB Identification: ANC84LA086.
The docket is stored on NTSB microfiche number 27005.
Nonscheduled 14 CFR NORTHERN AIR CARGO, INC.
Accident occurred Friday, June 08, 1984 in DEADHORSE, AK
Aircraft: DOUGLAS C-118A, registration: N4206L
Injuries: 3 Uninjured.

NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

THE ACFT STRUCK A NON-DIRECTIONAL RADIO BEACON TOWER WHILE ON AN ILS DME RWY 05 INSTRUMENT APPROACH TO THE KUPARAK OIL FIELD AIRPORT. INVESTIGATION REVEALED THAT WX ISSUED TO THE ACFT INCLUDED AN INDEFINATE 200 FT SKY OBSCURED CONDITION & VISIBILITY OF 1 1/4 MILES. BOTH THE CAPTAIN & CO-PLT STATED THAT THEY COULD SEE THE OTHER END OF THE RWY. THE DECISION HEIGHT FOR THE APPROACH IS 316 FT MSL; THE ANTENNA HEIGHT WAS 35 FT, AT THIS POINT THE ACFT SHOULD BE 250 FT ABOVE THE GROUND AND OVER THE NON-DIRECTIONAL BEACON TOWER. INVESTIGATION DID REVEAL THAT THE TOWER USED TO BE LOCATED 2800 FT OFF THE APPROACH END OF RWY 05, BUT WAS MOVED TO 1775 FT FROM THE APPROACH END OF RWY 05. EXISTING APPROACH PLATES DID NOT DISPLAY THE NEW LOCATION OF THE ANTENNA OR THE FACT THAT THE ANTENNA WAS ONE FT HIGHER THAN THE MAXIMUM AUTHORIZED BY THE FCC.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

IFR PROCEDURE..IMPROPER USE OF..PILOT IN COMMAND

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

DECISION HEIGHT..DISREGARDED..PILOT IN COMMAND

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

VISUAL/AURAL PERCEPTION..PILOT IN COMMAND



Contributing Factors

INADEQ SUBSTANTIATION PROCESS,INADEQ DOCUMENTATION..COMPANY/OPERATOR MGMT

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