Cases › DCA25LA055 › The analyst
BOEING 787-9UNITED AIRLINES 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.
4
timed facts
8
precedents
11
passages to ask
Ask the docket
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
4 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- 22:11:50 UTCFDRDescentp.4Aircraft encountered an upset while descending through a pressure altitude of approximately 10,100 ftsee the traces at this moment ↗
- 22:11:56 UTCFDRDescent (upset)p.4Maximum vertical acceleration deviation from 1 g reached 1.57 gsee the traces at this moment ↗
- 22:12:00 UTCFDRDescentp.4Upset event endssee the traces at this moment ↗
- Approximately 19 minutes after upset (~22:31 UTC)FDRLandingp.4Aircraft landedsee the traces at this moment ↗
Recorder events without a clock time
- Start of session (descent through ~30,000 ft)CPL recording begins basic and flight control parameter capture during descent from about 30,000 feet pressure altitude
FLIGHT DATA RECORDER - SPECIALISTA��S FACTUAL REPORT · 5 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 737-924ER · UNITED AIRLINES INCFort Myers, FLTurbulence encounter
- BOEING 767-322 · UNITED AIRLINES INCKingston, CBTurbulence encounter
- BOEING 717-200 · DELTA AIR LINES INCDetroit, MITurbulence encounter
- BOEING 737-832 · DELTA AIR LINES INCDetroit, MITurbulence encounter
- BOEING 767-322 · UNITED AIRLINES INCGulf of America , GMTurbulence encounter
- BOEING 787-9 · UNITED AIRLINES INCPacific Ocean, POTurbulence encounter
- MCDONNELL DOUGLAS AIRCRAFT CO MD 83 · World Atlantic AirlinesMiami , FLTurbulence encounter
- BOEING 767 · UNITED AIR LINES INCHONOLULU, POTurbulence 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 › Turbulence
Occurrences it coded
- 8 of 8Turbulence encounter
Set against the Board’s own findings for this case
Cited here, and common in the precedents
- —
Cited here, not seen in the precedents
- Physical environment › (general)
Common in the precedents, not cited here
- Conditions/weather/phenomena › Turbulence
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
- DCA25LA2382025-06-16 · BOEING 737-924ER · UNITED AIRLINES INC
The airplane’s inadvertent encounter with convective turbulence during descent, which resulted in serious injuries to two flight attendants.
- DCA25LA0232024-11-03 · BOEING 767-322 · UNITED AIRLINES INC
An inadvertent encounter with convective turbulence while in enroute cruise flight.
- DCA22LA1912022-08-29 · BOEING 717-200 · DELTA AIR LINES INC
An encounter with moderate turbulence during descent.
- CEN12LA1662012-02-19 · BOEING 737-832 · DELTA AIR LINES INC
An in-flight encounter with forecasted turbulence, which resulted in a serious injury to a flight attendant. Contributing to the accident was the flight attendant not being seated with her seatbelt fastened when the encounter occurred.
- DCA25LA0912024-12-29 · BOEING 767-322 · UNITED AIRLINES INC
An encounter with an area of clear air turbulence during cruise, which 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).