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Cases › DCA14CA036 › The analyst

BOEING 757 232DELTA AIR LINES INC

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.

5
timed facts
8
precedents
5
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

5 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
  1. 06:20 ESTFDRtakeoffp.2
    Aircraft took off and climbed to a cruising pressure altitude of about 29,000 ft
    see the traces at this moment ↗
  2. about 06:38 ESTFDRcruisep.2
    Pressure altitude decreased to 28,000 ft about 3 minutes before the descent began
    see the traces at this moment ↗
  3. 06:41 ESTFDRdescentp.2
    Gradual descent began; over the next few minutes there were some perturbations in the acceleration parameters
    see the traces at this moment ↗
  4. 06:46:33 ESTFDRdescentp.3
    A more pronounced set of fluctuations in the acceleration parameters lasting about 10 seconds: lateral acceleration went from 0.18 g to -0.12 g within 1 second; vertical acceleration peaked at 1.67 g and dipped to 0.51 g in just over a second; slight roll excursion from about +2.5 degrees right to -6.7 degrees left (turbulence encounter in which a flight attendant was seriously injured)
    see the traces at this moment ↗
  5. 07:06 ESTFDRlandingp.3
    Aircraft landed at ATL
    see the traces at this moment ↗
Flight Data Recorder - Specialist's Factual Report · 5 events extracted by claude-fable-5-1 (in-session)
How the Board coded the sequence
  1. Enroute-descent: Turbulence encounter

Precedents

8 closest casesranked by what happened, in the Board's words, and by the findings and occurrences it coded
  • DCA16CA0212015-11-07no fatalitiesmatch 104
    BOEING 787 · UNITED AIR LINES INC
    Beaumont, TX
    • ●Environmental issues › Conditions/weather/phenomena › Turbulence
    Turbulence encounter
  • DCA13CA1282013-07-12no fatalitiesmatch 104
    BOEING 777-232 · DELTA AIR LINES INC
    Atlanta, GA
    • ●Environmental issues › Conditions/weather/phenomena › Turbulence
    Turbulence encounter
  • ERA11CA3672011-06-22no fatalitiesmatch 103
    MCDONNELL DOUGLAS MD88 · Dynamic Airways, LLC
    Miami, FL
    • ●Environmental issues › Conditions/weather/phenomena › Turbulence
    Turbulence encounter
  • DCA19CA2072018-10-15no fatalitiesmatch 102
    Boeing 737 · Southwest Airlines
    Albany, NY
    • ●Environmental issues › Conditions/weather/phenomena › Turbulence
    Turbulence encounter
  • DCA22LA0012020-07-05no fatalitiesmatch 102
    BOEING 737-7H4 · SOUTHWEST AIRLINES CO
    Orlando, FL
    • ●Environmental issues › Conditions/weather/phenomena › Turbulence
    Turbulence encounter
  • DCA16CA0102015-10-24no fatalitiesmatch 101
    BOEING 737-924ER · UNITED AIR LINES INC
    Plevna, KS
    • ●Environmental issues › Conditions/weather/phenomena › Turbulence
    Turbulence encounter
  • DCA22LA1912022-08-29no fatalitiesmatch 101
    BOEING 717-200 · DELTA AIR LINES INC
    Detroit, MI
    • ●Environmental issues › Conditions/weather/phenomena › Turbulence
    Turbulence encounter
  • ERA11CA2472011-04-17no fatalitiesmatch 101
    BOEING 757-2B7 · U.S. Airways, Inc.
    Cheltenham, MD
    • ●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
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
  • DCA16CA0212015-11-07 · BOEING 787 · UNITED AIR LINES INC
    An inadvertent encounter with convective turbulence resulting in serious injury to a flight attendant.
  • DCA13CA1282013-07-12 · BOEING 777-232 · DELTA AIR LINES INC
    Unexpected encounter with convective turbulence while the flight attendants were preparing the cabin for arrival.
  • ERA11CA3672011-06-22 · MCDONNELL DOUGLAS MD88 · Dynamic Airways, LLC
    The in-flight encounter with convective turbulence, resulting in an injury to a cabin attendant.
  • DCA19CA2072018-10-15 · Boeing 737 · Southwest Airlines
    an encounter with convective turbulence that resulted in a serious injury to a flight attendant.
  • DCA22LA0012020-07-05 · BOEING 737-7H4 · SOUTHWEST AIRLINES CO
    An encounter with moderate turbulence during descent.

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).