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Accidents · NTSB DCA24MA063 · Final report

Boeing 737-9 accident near Portland, Oregon, January 6, 2024

On January 6, 2024 at about 1:14 am local time, a 2023 Boeing 737-9, registered N704AL, was substantially damaged in an accident during enroute (climb to cruise) near Portland, Oregon. It was flown under scheduled airline rules (Part 121). 8 people had minor injuries; 172 others were unhurt. The weather was visual conditions (good weather).

The NTSB's probable cause their words, unchanged

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.

Source: NTSB aviation accident database, copy made October 5, 2026. Docket and reports at the NTSB.

What the record shows

Date
January 6, 2024 · about 1:14 am local time
Place
Portland, Oregon · map
Type
Accident
Injuries
8 people had minor injuries; 172 others were unhurt.
Weather
visual conditions (good weather)
Aircraft
Boeing 737-9, built 2023 · all 737-9s on the register
Registration
N704AL · registry record · serial 67501
Damage
Substantial damage
Flight
Flight · scheduled airline rules (Part 121)

The NTSB's narrative final · quoted from the NTSB record

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.

The complete narrative as the NTSB published it. The NTSB's docket holds the report as a PDF and any photographs, statements and other documents from the investigation.

The factual record from the NTSB's investigation tables, in plain English

What happened, in order

  1. Part(s) separation from AC during enroute (climb to cruise) defining event

The NTSB's findings

  • Aircraft › Aircraft structures › Fuselage › Equip attach fittings (on fus) › Not installed/available
  • Organizational issues › Support/oversight/monitoring › Training › (general) › Manufacturer
  • Organizational issues › Support/oversight/monitoring › Oversight › Oversight of personnel › Manufacturer
  • Organizational issues › Support/oversight/monitoring › Enforcement › Company/organization policy › FAA/Regulator
  • Organizational issues › Support/oversight/monitoring › Safety programs › Adequacy of safety program › FAA/Regulator

Pilot

  • Certificate: airline transport pilot
  • Ratings: multi-engine land; single-engine land; instructor: airplane multi-engine; instructor: airplane single-engine; instructor: instrument airplane; instrument: airplane
  • Flight time: 12,500 hours in all; 6,500 in this make and model
  • Medical certificate: Class 1 (without waivers/limitations)
  • Seat: left
  • Injury: no injuries

Co-pilot

  • Certificate: airline transport pilot
  • Ratings: multi-engine land; single-engine land; single-engine sea; instructor: airplane multi-engine; instructor: airplane single-engine; instructor: instrument airplane; instrument: airplane
  • Flight time: 8,300 hours in all; 1,500 in this make and model
  • Medical certificate: Class 1 (without waivers/limitations)
  • Seat: rgt
  • Injury: no injuries

The aircraft

  • Airframe total time: 510 hours
  • Seats: 48
  • Landing gear: retractable
  • Engine 1: Cfm Intl LEAP-1B28 SER (turbofan); 0 hours total
  • Engine 2: Cfm Intl LEAP-1B28 SER (turbofan); 0 hours total
  • Operator: Alaska Airlines INC

The flight

  • Departed from: PDX Portland OR
  • Destination: ONT Ontario CA
  • Flight plan: IFR
  • A second pilot was aboard

Weather at the time

  • Light: night
  • Wind: from 160° at 11 knots
  • Visibility: 10 statute miles
  • Sky: overcast at 6,000 ft; clear
  • Temperature: 50°F (10°C), dew point 39°F (4°C)
  • Altimeter: 30.23 inHg
  • Observation at 4:53 pm from PDX, 12 miles away

Injuries

FatalSeriousMinorNone
Cabi13
Flight crew2
LapC3
Passengers7164

Photographs from the investigation 3 pictures from the NTSB's docket, as the NTSB released them

The NTSB's photographs with the NTSB's captions, at screen size. Open a picture to see it full size or to report one that should not be shown.

Documents from the investigation the NTSB's docket: the evidence folder behind the report

102 documents, released by the NTSB on August 9, 2024. View them here, or download them; the NTSB redacts some personal details before release, and this site shows the NTSB's own titles rather than its file names.

#DocumentWhat it is
1 1-A Order of Hearing PDF, 2 pages View Download
2 1-B Designation of Chair of Board of Inquiry PDF, 2 pages View Download
3 1-C Designation of Hearing Officer PDF, 2 pages View Download
4 1-D Designation of Parties to the Hearing PDF, 2 pages View Download
5 1-E Notice of Investigative Hearing PDF, 2 pages View Download
6 1-F Statement of Purpose PDF, 3 pages View Download
7 1-G Witness List PDF, 9 pages View Download
8 1-H Witnesses Professional Biographies PDF, 15 pages View Download
9 1-I Exhibit List PDF, 4 pages View Download
10 1-J Board of Inquiry and Technical Panel Professional Biographies PDF, 15 pages View Download
11 2-A Operational Factors - Group Chairman Factual Report PDF, 36 pages View Download
12 Operational Factors - Errata 1 to Group Chairman's Factual Report PDF, 15 pages View Download
13 Operational Factors - Errata 2 to Group Chairman's Factual Report PDF, 2 pages View Download
14 2-B Operational Factors - Attachment 1 - Crew Interview Transcripts and Statement - Crew Names Redacted PDF, 84 pages View Download
15 2-C Operational Factors - Attachment 2 - Alaska Personnel Interview Transcripts PDF, 97 pages View Download
16 2-D Operational Factors - Attachment 3 - Flight Crew Training Records - Flight Crew Names Redacted PDF, 4 pages View Download
17 2-D Operational Factors - Attachment 3 - Flight Crew Training Records PDF, 4 pages View Download
18 2-E Operational Factors -attachment 4 - Alaska Airlines Checklist PDF, 9 pages View Download
19 2-F Operational Factors - Attachment 5 - Simulator Evaluation PDF, 21 pages View Download
20 2-G Operational Factors - Attachment 6 - Sequence of Events PDF, 5 pages View Download
21 2-H Operational Factors - Attachment 7 - Continuing Qualification Quarterly Training Rotation Schedule PDF, 3 pages View Download
22 2-I Operational Factors - Attachment 8 - Cbt Training Modules [excerpts] PDF, 11 pages View Download
23 2-J Operational Factors - Attachment 9 - Continuous Qualification 2025 Loft Simulator Profile PDF, 3 pages View Download
24 2-K Operational Factors - 10 - Weight and Balance - Name Redacted PDF, 5 pages View Download
25 2-L Operational Factors - Attachment 11 - Boeing Response to Flight Deck Door Information Request PDF, 3 pages View Download
26 2-M Operational Factors - Attachment 12 - NASA ASRS Database Query Results PDF, 8 pages View Download
27 2-N Operational Factors - Attachment 13 - Flight Ops Training Bulletin (Postaccident) PDF, 5 pages View Download
28 2-O Operational Factors - Attachment 14 - Alaska Airlines Cabin Altitude Warning and Emergency Descent Training Video (Postaccident) M4V file Download
29 Operational Factors - Attachment 15 - Maintenance and Engineering Checklist (Postaccident) PDF, 6 pages View Download
30 Operational Factors - Attachment 16 - Maintenance Control Checklist (Postaccident) PDF, 3 pages View Download
31 Operational Factors - Attachment 17 - Flight Operations Checklist (Postaccident) PDF, 10 pages View Download
32 6-A Survival Factors Group Chair's Factual Report PDF, 57 pages View Download
33 6B - Survival Factors Attachment 1 Flight Attendants Interview Transcripts Redacted - with Fa Names Redacted PDF, 264 pages View Download
34 6-C Survival Factors - Attachment 2 Passenger Interview Summaries PDF, 15 pages View Download
35 7 Structures Group Chair's Factual Report PDF, 16 pages View Download
36 Structures Group Chair's Factual Report - Supplement PDF, 7 pages View Download
37 Structures Group - Explanation of Ad Compliance in Production PDF, 4 pages View Download
38 Boeing Med Plug Design Enhancements PDF, 1 page View Download
39 9-A Systems Group Chair's Factual Report PDF, 31 pages View Download
40 9-B Systems Factual Report Attachment 1 PDF, 50 pages View Download
41 9-C Systems Factual Report Attachment 2 spreadsheet Download
42 9-D Systems Factual Report Attachment 3 spreadsheet Download
43 9-E Boeing 737-7/8/8200/9/10 Aircraft Maintenance Manual Part I A�� System Description Section A�� Mid Cabin Exit Door Plug Temporary Revision 52- 1001 PDF, 4 pages View Download
44 Systems Group - Party Representative Forms PDF, 3 pages View Download
45 10-A Flight Data Recorder - Specialist's Factual Report PDF, 27 pages View Download
46 10-B Flight Data Recorder - Specialist's Factual Report - ATTACHMENT1 - FDR Tabular Data data file Download
47 10-C Flight Data Recorder - Specialist's Factual Report - ATTACHMENT2 - Qar Tabular Data data file Download
48 10-D Flight Data Recorder - Specialist's Factual Report - ATTACHMENT3 - FDR Tabular Data data file Download
49 10-E Flight Data Recorder - Specialist's Factual Report - ATTACHMENT4 - Qar Tabular Data data file Download
50 10-F Flight Data Recorder - Specialist's Factual Report - ATTACHMENT5 - FDR Tabular Data data file Download
51 10-G Flight Data Recorder - Specialist's Factual Report - ATTACHMENT6 - Qar Tabular Data data file Download
52 11-A Manufacturing Records and Human Performance Factual Report PDF, 57 pages View Download
53 Manufacturing Records and Human Performance Factual Report Addendum PDF, 31 pages View Download
54 11-B Manufacturing Records and Human Performance Attachment 1 - Ncr N1450292531 and Nco 145-8789-RSHK-1296-002NC PDF, 21 pages View Download
55 11-C Manufacturing Records and Human Performance Attachment 2 - Ncr N1450293199 and Nco 145-8789-RGEN-RSHK-001NC PDF, 17 pages View Download
56 11-D Manufacturing Records and Human Performance Attachment 3 - Shipside Action Tracker (Sat) 4650723 PDF, 7 pages View Download
57 11-E Manufacturing Records and Human Performance Attachment 4 - Previous Med Plug Removals PDF, 3 pages View Download
58 11-F Manufacturing Records and Human Performance Attachment 5 - Boeing Quality Alert 2023-0056-AR PDF, 3 pages View Download
59 11-G Manufacturing Records and Human Performance Attachment 6 - Bca Qms Document Control Excerpt PDF, 5 pages View Download
60 11-H Manufacturing Records and Human Performance Attachment 7 - Bca Qms Supplier Control Excerpt PDF, 5 pages View Download
61 11-I Manufacturing Records and Human Performance Attachment 8 - Bca Qms Quality Escapes Excerpt PDF, 4 pages View Download
62 11-J Manufacturing Records and Human Performance Attachment 9 - Boeing Safety Actions PDF, 13 pages View Download
63 11-K Manufacturing Records and Human Performance Attachment 10 - Boeing Interview Transcripts REDACTED1 PDF, 764 pages View Download
64 11-L Manufacturing Records and Human Performance Attachment 11 - Spirit Aerosystems Interview Transcripts Redacted PDF, 168 pages View Download
65 11-M Manufacturing Records and Human Performance - Attachment 12 FAA Interviews Redacted PDF, 783 pages View Download
66 11-N Manufacturing Records and Human Performance Attachment 13 - Boeing Executive Interviews Transcript Redacted Fod PDF, 507 pages View Download
67 Manufacturing Records and Human Performance - Attachment 14 Boeing Managers Interview Transcripts (Redacted) PDF, 310 pages View Download
68 11-O Excerpts from Boeing Process Instruction 1581 PDF, 14 pages View Download
69 11-P Excerpts from Boeing Process Instruction - Apply Authority Media in the Common Manufacturing Execution System PDF, 5 pages View Download
70 11-Q Excerpts from Boeing Process Instruction - Perform Product Conformance PDF, 5 pages View Download
71 11-R Excerpts from Boeing Process Instruction - Processing Product and Services Safety, Quality, or Compliance-related Speak Up Reports PDF, 5 pages View Download
72 11-S Boeing Installation Plan - Installation of Insulation Blankets Sec 46 - Left PDF, 4 pages View Download
73 11-T Boeing Installation Plan - Installation of Insulation Blankets Sec 46 - Right PDF, 4 pages View Download
74 11-U Excerpts from Boeing Mid Exit Door Plug Rigging Drawing PDF, 3 pages View Download
75 11-V Boeing Process Instruction 1581 Document Change History Overview- 2013-2023 Excerpts PDF, 2 pages View Download
76 11-W Boeing Request - Factual Information PDF, 50 pages View Download
77 12 Cockpit Voice Recorder - Specialist's Factual Report PDF, 6 pages View Download
78 15-A Materials Group Chair's Factual Report PDF, 56 pages View Download
79 15-B Materials Group Chair's Appendix A PDF, 15 pages View Download
80 2015 Boeing-faa Settlement Agreement PDF, 31 pages View Download
81 Materials Laboratory - Specialist's Factual Report PDF, 13 pages View Download
82 Boeing Rules for Lateral Transfers and Reclassifications PDF, 3 pages View Download
83 Alaska Airlines Submission to the Hearing PDF, 9 pages View Download
84 Spirit Aerosystems Submission to Hearing PDF, 6 pages View Download
85 Presentation - Iic Opening Statement PDF, 10 pages View Download
86 Presentation - Boeing Witnesses PDF, 15 pages View Download
87 Presentation - Spirit Witnesses - Timeline PDF, 1 page View Download
88 Presentation - Spirit Witnesses - Video video View Download
89 Presentation - FAA Witnesses - SMS Rule PDF, 8 pages View Download
90 Presentation - FAA Witnesses - Oversight PDF, 10 pages View Download
91 Graphics - Door Plug Photos and Timeline PDF, 3 pages · our copy View Download
92 Responses to Member Brown Questions PDF, 11 pages View Download
93 Transcript - Investigative Hearing - DCA24MA063 Day 1 - August 6, 2024 PDF, 299 pages View Download
94 Transcript - Investigative Hearing - DCA24MA063 Day 2 - August 7, 2024 PDF, 319 pages View Download
95 Follow-up Answers to Questions Asked During Investigative Hearing PDF, 13 pages View Download
96 Party Submissions to the Investigation - Final (All Parties) PDF, 107 pages View Download
97 Statement of Party Representatives to NTSB Investigation - Additional Party Forms No. 1 PDF, 11 pages View Download
98 Statement of Party Representatives to NTSB Investigation - Additional Party Form No. 2 PDF, 5 pages View Download
99 Statement of Party Representatives to NTSB Investigation - Party Form No. 3 PDF, 1 page View Download
100 Statement of Party Representatives to NTSB Investigation - Party Form No. 4 PDF, 1 page View Download
101 Boeing Media Event Documents and NTSB Correspondence PDF, 47 pages View Download
102 Staff Presentations - NTSB Board Meeting June 24 2025 PDF, 62 pages View Download

The same docket at the NTSB · documents without a copy here are fetched from the NTSB when you open them.

Other NTSB records under N704AL the same tail number, which may have belonged to a different aircraft at the time

1983-08-14NYC83FFA02 · accident near So. Fallsburgh, NY · substantial damage · serious injuries

Everything on this page comes from the NTSB's public records. The narrative, probable cause and findings are the NTSB's own words; the coded tables behind the report are written out in plain English, with pilots' ages, home towns and medical details left out. The documents and photographs are the NTSB's docket, shown as the NTSB released them. This site's own text never names anyone involved. A preliminary report can change; the final report usually follows one to two years later, and the page is refreshed when it does.