NTSB Identification: SEA87FA162A.
The docket is stored on NTSB microfiche number 34957.
Accident occurred Wednesday, August 12, 1987 in KETCHIKAN, AK
Probable Cause Approval Date: 01/19/1989
Aircraft: HUGHES 369D, registration: N58318
Injuries: 2 Fatal,3 Uninjured.

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.

N58318 (HUGHES 369, UNDER CONTRACT WITH US GEOLOGICAL SURVEY) WAS INBND FM SE TO LND AT KETCHIKAN-TEMSCO HELIPORT (6Z4) AS N73WS (CESSNA 185 AMPHIBIAN) WAS DEPG SE FM KETCHIKAN INTL ARPT (KTN). KTN & 6Z4 WERE LOCATED IN TONGASS NARROWS WITHMTNS NE & SW. RPRTD WX WAS: 500' SCT, 1100' BKN, 2200' OVC, VIS 5 MI WITH LGT RAIN & FOG, CIG RAGGED. FOR A VFR APCH TO 6Z4 (APRX 1-1/2 MI NORTH OF KTN ARPT), N58318 HAD TO GO UP THE NARROWS & OVR OR NR KTN. KTN HAD NO CTL TWR, BUT SUB- PART M OF FAR 93 REQD 2-WAY RDO COMM WITH KTN FSS, WHILE OPERG BLO 3000' & W/I 3 MI OF KTN. AT 1318:58, N58318 RPRTD AT GRAVINA PT (APRX 4 MI SE OF KTN) & THE FSS PROVIDED TRAFFIC ADZR. AT 1319:19, N73WS RPRTD INTENTIONS TO DEPART FROM KTN & WAS GIVEN A TRAFFIC ADZY, INCLUDING INFO CONCERNING N58318. N73WS DEPD KTN, USING PARALLEL TWY NEXT TO RWY 11, IAW LTROF AGREEMENT. NRLY 1 MI SE OF KTN, THE TWO COLLIDED AS N58318 WAS FLYING NEAR THE EXTDD CNTRLN OF RWY 11. N58318 CRASHEDIN WTR; N73WS RETURNED & CRASH LNDD AT KTN. FIVE ACFT IN VCNTY OF KTN; FAA DATA INDCD HVY TRAFFIC AT KTN FM MAY TO SEP.

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

IN-FLIGHT PLANNING/DECISION..IMPROPER..PILOT IN COMMAND

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

VISUAL LOOKOUT..INADEQUATE..PILOT IN COMMAND


Contributing Factors

WEATHER CONDITION..LOW CEILING


Contributing Factors

WEATHER CONDITION..FOG


Contributing Factors

WEATHER CONDITION..RAIN


Contributing Factors

TERRAIN CONDITION..MOUNTAINOUS/HILLY




Contributing Factors

VISUAL LOOKOUT..INADEQUATE..PILOT OF OTHER AIRCRAFT

Index for Aug1987 | Index of months