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NTSB Report
January 6, 2024 · Boeing 737-9 · N704AL
Portland, OR
Overview
Report Status
Probable Cause
Event Type
Accident
Date
January 6, 2024
Injury Outcomes
8 injuries (8 minor injuries), 172 uninjured
Location
Portland, OR
Aircraft
Boeing 737-9 (2023)
Tail Number
N704AL
Operator
Alaska Airlines
Injuries
Minor
Aircraft Damage
Substantial
NTSB Number
DCA24MA063
On January 5, 2024, about 1713 Pacific standard time, Alaska Airlines flight 1282, a Boeing 737-9 airplane, N704AL, experienced an in-flight separation of the left mid exit door plug and rapid depressurization during climb after takeoff from Portland International Airport, Portland, Oregon. One flight attendant and 7 passengers received minor injuries; the captain, the first officer, 3 flight attendants, and 164 passengers were uninjured; and the airplane sustained substantial damage. The scheduled domestic passenger flight was operated under Title 14 Code of Federal Regulations Part 121 and departed PDX about 1707 with a planned destination of Ontario International Airport, Ontario, California.
NTSB Probable Cause
the in-flight separation of the left mid exit door (MED) plug due to Boeing Commercial Airplanes’ failure to provide adequate training, guidance, and oversight necessary to ensure that manufacturing personnel could consistently and correctly comply with its parts removal process, which was intended to document and ensure that the securing bolts and hardware that were removed from the left MED plug to facilitate rework during the manufacturing process were reinstalled. Contributing to the accident was the Federal Aviation Administration’s ineffective compliance enforcement surveillance and audit planning activities, which failed to adequately identify and ensure that Boeing addressed the repetitive and systemic nonconformance issues associated with its parts removal process.
Full Narrative
On January 5, 2024, about 1713 Pacific standard time, Alaska Airlines flight 1282, a Boeing 737-9 airplane, N704AL, experienced an in-flight separation of the left mid exit door plug and rapid depressurization during climb after takeoff from Portland International Airport, Portland, Oregon. One flight attendant and 7 passengers received minor injuries; the captain, the first officer, 3 flight attendants, and 164 passengers were uninjured; and the airplane sustained substantial damage. The scheduled domestic passenger flight was operated under Title 14 Code of Federal Regulations Part 121 and departed PDX about 1707 with a planned destination of Ontario International Airport, Ontario, California.
Flight
Event TypeAccident
Event Time17:14 PST
Nearest Airport0nm
Flight Plan FiledIFR
Flight Plan ActivatedYes
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftBoeing 737-9
Tail NumberN704AL
Aircraft CategoryAir
DamageSubstantial
OperatorAlaska Airlines
Operating RulePart 121
Engines2
Engine TypeTurbofan
Engine DetailsCfm Intl · LEAP-1B28 SER · Turbofan · 29317 | Cfm Intl · LEAP-1B28 SER · Turbofan · 29317
Seats48
People & Injuries
Injury Summary8 injuries (8 minor injuries), 172 uninjured
Fatal0
Serious0
Minor8
Uninjured172
Total180
Crew 1Age 36 · First Class · None
Crew 2Age 48 · First Class · None
Conditions
ConditionsVMC
LightNight
Wind160° @ 11 kt
Visibility10 sm
CeilingOvercast 6000 ft
Temperature / Dew Point50 / 39 C
Altimeter30.23 inHg
Observation Time16:53
Weather SourceWFAC