NTSB CAROL · Event
Event DCA21LA208
Registry · N479AS
FAA Aircraft Registry record.
Make / Model
BOEING 737-990ER
Year of manufacture
2015 · 6 years old at event
Engine
CFM INTL CFM56-7B27E
Seats / Engines
222 seats · 2 engines
Last airworthiness date
20150715
ADS-B equipped
Yes — Mode-S A5E29A
Registrant of record
ALASKA AIRLINES INC
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
The passenger’s use of the evacuation slide resulted in the serious injury.
Factual narrative
Even though an overheated passenger cell phone was put into a battery containment bag (BCB) by the cabin crew, a large amount of smoke remained in the cabin with a strong acrid smell. As a result, the captain commanded an evacuation on taxiway A spot 6A at the Seattle-Tacoma International Airport (SEA), Seattle Washington. One passenger broke their elbow while descending on the evacuation slide. Source: NTSB Aviation Accident Database Retrieved: 2026-02-12
NTSB Findings
Hierarchical cause / factor breakdown from the FAA bulk avdata database. Each finding tagged C (Cause) or F (Factor).
- — Aircraft-Aircraft oper/perf/capability-(general)-(general)-Related operating info
Verbatim from NTSB's published report. Source file
NTSB_2021_DCA21LA208.txt.
Findings + structured fields enriched from FAA avall.mdb.
Full investigation docket on
data.ntsb.gov ↗.
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