Cases › DCA16CA021 › The analyst
BOEING 787UNITED 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.
2
timed facts
8
precedents
8
passages to ask
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passages, not paraphrasesTry
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
2 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- 10:52:00 to 11:00:00 UTCFDRDescentp.2Figure 2 depicts an eight minute segment highlighting increases in acceleration consistent with a turbulence eventsee the traces at this moment ↗
- 10:55:00 to 10:56:30 UTCFDRDescentp.2Increases in all three accelerations are noticeable, consistent with turbulence eventsee the traces at this moment ↗
Recorder events without a clock time
- 0600 CDT (approx.)United Airlines flight #128, a Boeing 787-900, encountered moderate turbulence while descending to Houston G. Bush Intercontinental Airport (IAH)
Flight Data Recorder - Specialist's Factual Report · 3 events extracted by claude-sonnet-5
How the Board coded the sequence
- Enroute-descent: Turbulence encounter
Precedents
8 closest casesranked by what happened, in the Board's words, and by the findings and occurrences it coded- BOEING 757 232 · DELTA AIR LINES INCAtlanta, GA
- ●Environmental issues › Conditions/weather/phenomena › Turbulence
Turbulence encounter - MCDONNELL DOUGLAS MD88 · Dynamic Airways, LLCMiami, FL
- ●Environmental issues › Conditions/weather/phenomena › Turbulence
Turbulence encounter - BOEING 737-924ER · UNITED AIR LINES INCPlevna, KS
- ●Environmental issues › Conditions/weather/phenomena › Turbulence
Turbulence encounter - BOEING 737-7H4 · SOUTHWEST AIRLINES COOrlando, FL
- ●Environmental issues › Conditions/weather/phenomena › Turbulence
Turbulence encounter - Boeing 737 · Southwest AirlinesAlbany, NY
- ●Environmental issues › Conditions/weather/phenomena › Turbulence
Turbulence encounter - BOEING 757-2B7 · U.S. Airways, Inc.Cheltenham, MD
- ●Environmental issues › Conditions/weather/phenomena › Turbulence
Turbulence encounter - EMBRAER EMB170 · Republic Airlines Inc.,Norfolk, VA
- ●Environmental issues › Conditions/weather/phenomena › Turbulence
Turbulence encounter - AIRBUS INDUSTRIE A320-212 · DELTA AIR LINES INCMinneapolis, MN
- ●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 causeFindings the Board cited in those cases
- 8 of 8Environmental issues › Conditions/weather/phenomena › Turbulencecited here too
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
- DCA14CA0362014-01-10 · BOEING 757 232 · DELTA AIR LINES INC
unexpected encounter with convective turbulence while the flight attendants were preparing 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.
- DCA16CA0102015-10-24 · BOEING 737-924ER · UNITED AIR LINES INC
An inadvertent encounter with clear air turbulence resulting in a serious injury to a flight attendant.
- DCA22LA0012020-07-05 · BOEING 737-7H4 · SOUTHWEST AIRLINES CO
An encounter with moderate turbulence during descent.
- DCA19CA2072018-10-15 · Boeing 737 · Southwest Airlines
an encounter with convective turbulence that resulted in a serious injury to a flight attendant.
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).