# NTSB DCA84AA013: McDonnell Douglas DC-10-30CF, Anchorage, AK, December 23, 1983 - Type: NTSB accident investigation - Classification: Accident · Serious injuries · Final report - Date: December 23, 1983, 14:06 local (23:06 UTC) - Place: Anchorage, AK - Coordinates: 61.1805, -149.880203 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=61.1805&lon=-149.8802&mi=10 - Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping) - Highest injury: Serious injuries - Injuries: 3 serious, 3 minor, 6 uninjured - Status: Completed - Report: Board-adopted at Board Meeting - NTSB office: Major Investigations Division - Safety recommendations: Yes - NTSB case key (mKey): 15801 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DCA84AA013 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/15801/pdf - Board report AAR8410 (PDF): https://www.ntsb.gov/investigations/AccidentReports/Reports/AAR8410.pdf - Page: https://openairdocs.org/ntsb/DCA84AA013 ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - On ground/water collision with object, takeoff - roll/run - weather condition - fog (contributing factor) - became lost/disoriented - inadvertent, pilot in command (contributing factor) - visual/aural perception, pilot in command (cause) - airport facilities,taxiway marking - inadequate (contributing factor) - airport facilities,runway marking - inadequate (contributing factor) - wrong runway - inadvertent use, pilot in command (cause) - heading indicator - not used, pilot in command - object - aircraft parked/standing (contributing factor) - Overrun, takeoff - On ground/water collision with object, takeoff - object - approach light/navaid (contributing factor) - On ground/water encounter with terrain/water, takeoff - terrain condition - high vegetation (contributing factor) - terrain condition - rough/uneven (contributing factor) - On ground/water collision with object, standing - engine(s) operating - weather condition - fog (contributing factor) - became lost/disoriented - inadvertent, pilot of other aircraft (contributing factor) - visual/aural perception, pilot of other aircraft (cause) - airport facilities,taxiway marking - inadequate (contributing factor) - airport facilities,runway marking - inadequate (contributing factor) - wrong runway - inadvertent use, pilot of other aircraft (cause) - heading indicator - not used, pilot of other aircraft - object - aircraft moving on ground (contributing factor) ## Analysis (aircraft 2) A PIPER PA-31, N35206, (SOUTH CENTRAL AIR FLT 59) WAS CLEARED TO TAXI TO RWY 6L. THE WX AT THAT TIME WAS FOGGY WITH ABOUT 1/8 MI VSIIBILITY, BUT THE RVR WAS IMPROVING & THE ARPT WAS EXPECTED SOON TO BE ACCEPTABLE FOR TAKEOFFS. THE PA-31 CREW TAXIED & WAITED IN THE HOLDING AREA FOR THE VISIBILITY TO IMPROVE. A DOUGLAS DC-10, H7339, KOREAN AIR LINES FLT 084, WAS CLEARED TO RWY 32; HOWEVER, WHILE TAXIING IN THE FOG, THE DC-10 CREW INADVERTENTLY TAXIED TO RWY 6L/24R. TOWER PSNL WERE UNABLE TO SEE THE ACFT IN THE FOG & WERE UNAWARE OF THE DC-10'S POSITION. THE DC-10 WAS CLEARED TO TAKE-OFF ON RWY 32 & THE PA-31 WAS CLEARED TO HOLD ON RWY 6L. THE DC-10 CREW TAXIED ON RWY 24R & BEGAN TAKING OFF TOWARD THE PA-31 WITH 2400 FT OF RWY REMAINING. ITS ESTIMATED TAKEOFF DISTANCE WAS 8150 FT. SUBSEQUENTLY, THE DC-10 COLLIDED WITH THE PA-31, CONTINUED OFF THE RWY & HIT STANCHION LIGHTS, SMALL TREES & ROUGH TERRAIN. AN INVESTIGATION REVEALED THE DC-10 PLT DID NOT CONFIRM HIS POSITION BY USING HIS COMPASS & THAT THERE WAS A LACK OF LEGIBLE TWY & RWY SIGNS. ## Analysis (aircraft 1) A PIPER PA-31, N35206, (SOUTH CENTRAL AIR FLT 59) WAS CLEARED TO TAXI TO RWY 6L. THE WX AT THAT TIME WAS FOGGY WITH ABOUT 1/8 MI VISIBILITY, BUT THE RVR WAS IMPROVING & THE ARPT WAS EXPECTED SOON TO BE ACCEPTABLE FOR TAKEOFFS. THE PA-31 CREW TAXIED & WAITED IN THE HOLDING AREA FOR THE VISIBILITY TO IMPROVE. A DOUGLAS DC-10, H7339, KOREAN AIR LINES FLT 084, WAS CLEARED TO RWY 32. HOWEVER, WHILE TAXIING IN THE FOG, THE DC-10 CREW INADVERTENTLY TAXIED TO RWY 6L/24R. TOWER PSNL WERE UNABLE TO SEE THE ACFT IN THE FOG & WERE UNAWARE OF THE DC-10'S POSITION. THE DC-10 WAS CLEARED TO TAKE-OFF ON RWY 32 & THE PA-31 WAS CLEARED TO HOLD ON RWY 6L. THE DC-10 CREW TAXIED ON RWY 24R & BEGAN TAKING OFF TOWARD THE PA-31 WITH 2400 FT OF RWY REMAINING. ITS ESTIMATED TAKEOFF DISTANCE WAS 8150 FT. SUBSEQUENTLY, THE DC-10 COLLIDED WITH THE PA-31, CONTINUED OFF THE RWY & HIT STANCHION LIGHTS, SMALL TREES & ROUGH TERRAIN. AN INVESTIGATION REVEALED THE DC-10 PLT DID NOT CONFIRM HIS POSITION BY USING HIS COMPASS & THAT THERE WAS A LACK OF LEGIBLE TWY & RWY SIGNS. ## Aircraft 1 - Registration: H7339 (not matched to a registry record) - Reported make and model: McDonnell Douglas DC-10-30CF - Category: Airplane - Serial number: 46960 - Airframe hours: 24071 - Engines: GE CF6-50 49000 lbs thrust turbo fan - Damage: Destroyed - Fire: On-Ground - Flight: Part 129 - Registered owner: Korean Air Lines - Airworthiness certificate: Standard, Transport - Last inspection: Continuous airworthiness, December 20, 1983, 6 hours before - Destination: LAX, LOS ANGELES, CA - Flight plan: IFR - Airport: ANC, Anchorage Int'L., runway 24R, 10,600 × 200 ft, asphalt ## Aircraft 2 - Registration: [N35206](https://openairdocs.org/deregistered/N35206-1984-10-03), registration cancelled 1984-10-03, S/N 31-7952193 (OpenAirDocs) - Reported make and model: PIPER PA-31-350 - Registry model: [Piper PA-31-350](https://openairdocs.org/model/piper-pa-31-350) (registry code 7103110) (OpenAirDocs) - Category: Airplane - Serial number: 7952193 - Engines: LYCOMING TIO-540-J 350 horsepower reciprocating - Damage: Destroyed - Flight: Part 135 - Registered owner: South Central Air, Inc. - Airworthiness certificate: Standard, Normal - Destination: ENA, KENAI, AK - Flight plan: IFR - Airport: ANC, Anchorage Int'L., runway 24R, 10,600 × 200 ft, asphalt ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot, aircraft 1; age 48; airline transport, foreign; airplane ratings: multi-engine land, single-engine sea; instrument ratings: airplane; medical: class 2, valid medical--no waivers/lim.; seat: left; toxicology performed; flight hours: 12,563 total, 6,472 in this make and model, 2,227 as pilot in command, 167 in the last 90 days - Pilot, aircraft N35206; age 33; commercial, airline transport; airplane ratings: multi-engine land, single-engine sea; instrument ratings: airplane; medical: class 2, valid medical--w/ waivers/lim; seat: left; flight hours: 5,115 total ## Weather - Conditions: Instrument (IMC), Day - Temperature: 16 °F, dew point 10 °F - Altimeter: 31.00 inHg - Observed at: ANC ## FAA reports on this event (1) The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs). - [Accident 19831223075722A](https://openairdocs.org/incident/19831223075722A), Dec 23, 1983: Piper PA31350, Anchorage, AK, Destroyed. Aircraft was struck while awaiting takeoff clearence by akl HL7339 during its takeoff run from wrong runway. From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.