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Cases › WPR12LA053 › The analyst

BOEING 737-7H4SOUTHWEST AIRLINES CO

What the docket says, assembled. No language model is involved, so nothing on this page can be invented — every line traces to a recorder, a report page or the Board's own record.

0
timed facts
8
precedents
14
passages to ask

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passages, not paraphrases
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Every answer is a passage of the docket with the page it came from, or the words “not in the docket”. Nothing is summarised or reasoned for you — read the source.

One timeline

0 timed factsthe recorder events from the FDR report, with the transcript's warnings, callouts, the words nearest each event and the final seconds — on one clock, as printed in each report

No timed facts: this docket has no extracted recorder sequence and no transcript.

Recorder events without a clock time
  • 1931the aircraft was in level flight at 40,000 feet and was experiencing vertical accelerations of about +/- 0.1g
  • 1943:05the aircraft descended to 30,000 feet
  • 1953:21aircraft level at 30,000 feet, began experiencing vertical accelerations for about 13 seconds
  • 1953flight 1489 encountered turbulence at flight level 30,000 feet (FL300), over Yosemite National Park
Flight Data Recorder 10 - Specialist's Factual Report · 4 events extracted by claude-sonnet-5
How the Board coded the sequence
  1. Enroute: Turbulence encounter

Precedents

8 closest casesranked by what happened, in the Board's words, and by the findings and occurrences it coded
  • DCA24LA2562024-08-07no fatalitiesmatch 90
    BOEING 737 · SOUTHWEST AIRLINES CO
    Severn, MD
    • ●Environmental issues › Conditions/weather/phenomena › Turbulence
    • ●Personnel issues › Action/decision › Action
    Turbulence encounter
  • DCA11CA0602011-05-23no fatalitiesmatch 88
    BOEING 757 · Delta Airlines
    Boone, NC
    • ●Environmental issues › Conditions/weather/phenomena › Turbulence
    • ●Personnel issues › Action/decision › Action
    Turbulence encounter
  • DCA18CA2012018-06-10no fatalitiesmatch 87
    BOEING 777 223 · AMERICAN AIRLINES INC
    Decatur, TX
    • ●Environmental issues › Conditions/weather/phenomena › Turbulence
    • ●Personnel issues › Action/decision › Action
    Turbulence encounter
  • ERA09LA2242009-03-28no fatalitiesmatch 86
    MCDONNELL DOUGLAS MD88 · Delta Air Lines Inc
    Atlanta, GA
    • ●Environmental issues › Conditions/weather/phenomena › Turbulence
    • ●Personnel issues › Action/decision › Action
    Turbulence encounter
  • DCA14LA0602014-02-17no fatalitiesmatch 82
    BOEING 737 · Continental Airlines
    Kaycee, WY
    • ●Environmental issues › Conditions/weather/phenomena › Turbulence
    Turbulence encounter
  • WPR12LA0572011-12-01no fatalitiesmatch 82
    BOEING 757-222 · United Airlines
    Modesto, CA
    • ●Environmental issues › Conditions/weather/phenomena › Turbulence
    Turbulence encounter
  • DCA17CA0422016-12-14no fatalitiesmatch 81
    BOEING 737 824 · United Airlines
    Denver, CO
    • ●Environmental issues › Conditions/weather/phenomena › Turbulence
    Turbulence encounter
  • DCA16CA0102015-10-24no fatalitiesmatch 79
    BOEING 737-924ER · UNITED AIR LINES INC
    Plevna, KS
    • ●Environmental issues › Conditions/weather/phenomena › Turbulence
    Turbulence encounter

What the record says

a pattern, not a findingacross the 8 closest cases · 8 carry coded findings · 8 have a probable cause
Findings the Board cited in those cases
Occurrences it coded
  • 8 of 8Turbulence encounter
Set against the Board’s own findings for this case
Cited here, and common in the precedents
  • Conditions/weather/phenomena › Turbulence
  • Action/decision › Action
Cited here, not seen in the precedents
  • —
Common in the precedents, not cited here
  • —

A teaching device, not a verdict: what the record would have looked at, next to what the Board found.

In the Board’s words — the closest cases
  • DCA24LA2562024-08-07 · BOEING 737 · SOUTHWEST AIRLINES CO
    A passenger’s failure to comply with crew member instructions to remain seated with seatbelt fastened.
  • DCA11CA0602011-05-23 · BOEING 757 · Delta Airlines
    Inadvertant encounter with convective turbulence while in cruise. Contributing to the severity of the accident was the unrestrained status of the passenger, contrary to the lighted seat belt sign.
  • DCA18CA2012018-06-10 · BOEING 777 223 · AMERICAN AIRLINES INC
    the passengers failure to comply with the fasten seatbelt sign when the airplane encountered convective turbulence.
  • ERA09LA2242009-03-28 · MCDONNELL DOUGLAS MD88 · Delta Air Lines Inc
    The flight attendant’s failure to properly restrain herself after taking her jumpseat.
  • DCA14LA0602014-02-17 · BOEING 737 · Continental Airlines
    an encounter with severe mountain wave turbulence during cruise flight.

This is the pattern in the NTSB’s own record across similar accidents — which findings it cited, what it coded, what it recommended. It is drawn from the record, not written about this case, and it never assigns blame: investigations exist to prevent the next accident (ICAO Annex 13).