- Date
- June 2, 1990, 09:37 local (17:37 UTC)
- Place
- Unalakleet, AK
- Injuries
- 1 serious, 3 minor
- Damage
- Destroyed
- Phase of flight
- Approach
- Aircraft
- N670MABoeing 737-2X6C
- Weather
- Instrument (IMC) · Day
- Status
- Completed · report May 3, 1993
- Report
- Board-adopted at Board Meeting
- Investigation class
- Class 1
- NTSB office
- Major Investigations Division
- Safety recommendations
- Yes
- FAA report
- 19900602018109A
- Case key
- 15936
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.
On this page
Probable cause
Deficiencies in flightcrew coordination, their failure to adequately prepare for and properly execute the unk LOC rwy 14 nonprecision approach and their subsequent premature descent.
Sequence of events
NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.
Analysis
On June 2, 1990, at 09:37 alaskan daylight time, markair, inc., flight 3087, a Boeing 737-2X6C, registered in the us as N670MA, crashed about 7.5 miles short of runway 14, Unalakleet, Alaska, while executing a localizer approach to that runway. The flight originated at 0828 at anchorage international airport, anchorage, Alaska. Instrument meteorological conditions existed at the time, and the flight was on an IFR flight plan. The captain, the first officer, and a flight attendant sustained minor injuries. Another flight attendant sustained serious injuries. There were no passengers on board, and the aircraft was destroyed. The flight was operated under FAR part 121. (See NTSB/AAR-91/02 for further information)
Aircraft
- Registration
- N670MA
- Reported as
- Boeing 737-2X6C
- Category
- Airplane
- Serial number
- 23121
- Engine
- P&W JT8D-17A, 16,000 lbs thrust, turbo fan
- Damage
- Destroyed
- Flight
- Part 121
- Operator
- Markair
- Airworthiness certificate
- Standard, Transport
- Departed
- ANC · Anchorage, AK
- Flight plan
- IFR
- Airport
- UNK · Unakaleet, runway 14, 6,010 × 170 ft, gravel
Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.
Flight crew
As NTSB recorded them. NTSB leaves out names.
- Role
- Pilot
- Age
- 39
- Certificates
- Commercial, Airline transport, Private
- Airplane ratings
- Multi-engine land, Single-engine sea, Single-engine land
- Instrument ratings
- Airplane
- Medical
- Class 1, Valid Medical--no waivers/lim.
- Seat
- Left
- Flight hours
- 12,000 total · 6,400 in this make and model
Weather
- Conditions
- Instrument (IMC) · Day
- Wind
- Calm
- Visibility
- 1 statute miles
- Lowest ceiling
- 500 ft overcast
- Temperature
- 48 °F
- Altimeter
- 29.00 inHg
- Observed at
- UNK, 7 nm away
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.