# NTSB ANC85MA183: Boeing 737-2X6C, N674MA, Unalaska, AK, September 25, 1985 - Type: NTSB accident investigation - Classification: Accident · Minor injuries · Major investigation · Final report - Date: September 25, 1985, 13:33 local (21:33 UTC) - Place: Unalaska, AK - Coordinates: 53.900138, -166.400115 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=53.9001&lon=-166.4001&mi=10 - Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping) - Highest injury: Minor injuries - Injuries: 1 minor, 20 uninjured - Status: Completed - Report: Approved by Office Director - NTSB office: Alaska Regional Office - Safety recommendations: Yes - NTSB case key (mKey): 4582 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC85MA183 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/4582/pdf - Page: https://openairdocs.org/ntsb/ANC85MA183 ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Undershoot, approach - vfr pattern - final approach - planning/decision - improper, company/operator management (cause) - insuff standards/requirements,operation/operator, faa(organization) (contributing factor) - airport/facilities - inadequate (contributing factor) - other airport/runway maintenance - inadequate (contributing factor) - inadequate surveillance of operation, faa(organization) (contributing factor) - inadequate surveillance of operation, other govt organization (contributing factor) - planned approach - initiated, pilot in command - company-induced pressure, pilot in command - light condition - sunglare (contributing factor) - visual/aural perception, pilot in command (contributing factor) - airport facilities,visual apch slope ind(vasi) - unavailable (contributing factor) - weather condition - unfavorable wind (contributing factor) - weather condition - windshear (contributing factor) - compensation for wind conditions - inadequate, pilot in command (cause) - proper touchdown point - not attained, pilot in command (cause) - lack of familiarity with geographic area, pilot in command (contributing factor) - In flight collision with terrain/water, landing - flare/touchdown - terrain condition - rough/uneven (contributing factor) - terrain condition - loose objects (contributing factor) - On ground/water collision with object, landing - Main gear collapsed, landing - landing gear,main gear - overload ## Analysis ACFT WAS DISPATCHED TO RSTRCTD ARPT WITH A 3900' RWY & NOTAMED: 3' STNDG WTR ON NORTH END OF RWY. SIGMET WAS IN EFFECT FOR MOD TO SVR TURBC BLO 10,000' DUE TO STRONG LOW LVL WND & ASSOC WNDSHEAR. CAPT MADE A SHALLOW OVRWTR APCH TO RWY 12, WHICH HAD A NR VERT 70' BLUFF SKIRTING ITS L EDGE, APRX 106' FM RWY CENTERLINE. ON FINAL APCH, CAPT NOTED VARIABLE WND CONDS & SUDDEN 15 KT INCREASE IN IAS DUE TO WNDSHEAR. HE CONTD APCH, BUT ACFT SETTLED & TOUCHED DWN 72' SHORT OF RWY. L MAIN GEAR HIT A LOG (WASHED ONTO SHORE) & LARGE ROCK, THEN COLLAPSED AFTER ACFT BOUNCED & LNDD ON RWY. UNPREDICTABLE WNDS & DWNDFTS WERE RPRTDLY PREVALENT AT THIS ARPT. OFFICIAL 1349 ADT WND WAS FM 160 DEG AT 8 KTS, BUT AT APCH END OF RWY, WND WAS RPRTD COMING OVR BLUFF & WAS GUSTY. FAA HAD GRANTED MARKAIR EXEMPTION TO OPR AT UNALASKA W/O OVRRUN/SAFETY AREAS. NO VASI AT APCH END OF RWY 12. OWNER (STATE OF ALASKA) DELAYED IMPROVEMENTS DUE TO FUNDING PRBLMS. CAPT'S 10TH LNDG AT UNALASKA; HAD NO SUNGLASSES; BLINDED BY SUNGLARE OFF WTR. REQD DRY LNDG FIELD LENGTH WAS COMPUTED TO BE 3700'. ## Aircraft - Registration: N674MA (not matched to a registry record) - Reported make and model: BOEING 737-2X6C - Category: Airplane - Serial number: 23292 - Airframe hours: 614 - Engines: P&W JT8D-17A 16000 lbs thrust turbo fan - Damage: Substantial damage - Flight: Part 121 - Registered owner: Markair, Inc. - Airworthiness certificate: Standard, Transport - Last inspection: AAIP, September 18, 1985, 59 hours before - Departed: ANC, ANCHORAGE, AK - Flight plan: IFR - Airport: DUT, Unalaska, runway 12, 3,900 × 100 ft, gravel ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 41; airline transport, commercial; airplane ratings: single-engine land, single-engine sea, multi-engine land; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; seat: left; flight hours: 14,969 total, 1,173 in this make and model, 11,269 as pilot in command, 206 in the last 90 days, 71 in the last 30 days, 4 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: variable at 8 knots - Visibility: 20 statute miles - Lowest ceiling: 3,000 ft broken - Temperature: 55 °F, dew point 48 °F - Altimeter: 29.00 inHg - Observed at: DUT ## 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 19850925054459A](https://openairdocs.org/incident/19850925054459A), Sep 25, 1985: Boeing 7372X6C, Unalaska, AK, Substantial damage. Landed hard short of runway hitting rocks and a log, bounced and crashed onto runway. Blamed windshear slow airspeed 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.