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Cases › ENG11IA051 › The analyst

BOEING 757-222UNITED AIRlNES 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.

0
timed facts
8
precedents
12
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
  • 1637:01Aircraft air/ground mode switched to ground
  • 1637:34Heading change from about 348 degrees to 319 degrees, occurring 33 seconds after air/ground switch to ground
  • after 1638:13The airspeeds recorded after this time are not reliable
  • shortly after thrust reverser deploymentA split in N1 and N2
  • coincident with thrust reverser deploymentIncrease in fuel flow, followed by number 1 engine fuel flow indicating zero along with a decrease in oil pressure
  • during the landingThe left Shutoff Valve shows a change of state from open to closed
Flight Data Recorder 10 - Specialist's Factual Report · 6 events extracted by claude-sonnet-5
How the Board coded the sequence
  1. Landing-landing roll: Birdstrike

Precedents

8 closest casesranked by what happened, in the Board's words, and by the findings and occurrences it coded
  • ENG14IA0052013-12-23no fatalitiesmatch 105
    BOEING 737 3H4 · SOUTHWEST AIRLINES CO
    St. Louis, MO
    • ●Environmental issues › Physical environment › Object/animal/substance
    Birdstrike
  • WPR10LA0442009-11-02substantialmatch 91
    MCDONNELL DOUGLAS MD-90-30 · DELTA AIR LINES INC
    Phoenix, AZ
    • ●Environmental issues › Physical environment › Object/animal/substance
    Birdstrike
  • DCA24LA0512023-12-19substantialmatch 91
    BOEING 737 · SOUTHWEST AIRLINES CO
    St. Louis, MO
    • ●Environmental issues › Physical environment › Object/animal/substance
    Birdstrike
  • DCA15CA0372014-12-13substantialmatch 89
    BOEING 737 · Southwest Airlines, Co.
    Baltimore, MD
    • ●Environmental issues › Physical environment › Object/animal/substance
    Birdstrike
  • CEN12IA5022012-07-31no fatalitiesmatch 89
    BOEING 737-924ER · UNITED AIR LINES INC
    Denver, CO
    • ●Environmental issues › Physical environment › Object/animal/substance
    Birdstrike
  • DCA14CA0312013-11-25substantialmatch 89
    DE HAVILLAND DHC8 - 102 · Piedmont Airlines
    Philadelphia, PA
    • ●Environmental issues › Physical environment › Object/animal/substance
    Birdstrike
  • WPR10LA3952010-08-10substantialmatch 88
    EMBRAER EMB-145XR · Express Jet Airlines
    Salt Lake City, UT
    • ●Environmental issues › Physical environment › Object/animal/substance
    Birdstrike
  • DCA23LA0672022-11-20substantialmatch 87
    AIRBUS A320 · DELTA AIR LINES INC
    Red Oak, IA
    • ●Environmental issues › Physical environment › Object/animal/substance
    Birdstrike

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 8Birdstrike
Set against the Board’s own findings for this case
Cited here, and common in the precedents
  • Physical environment › Object/animal/substance
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
  • ENG14IA0052013-12-23 · BOEING 737 3H4 · SOUTHWEST AIRLINES CO
    The initial damage to the fan blades was caused by the ingestion of two mallard ducks that caused one or more fan blades to fracture, striking the fan shroud, as well as other passing fan blades, producing various sized blades fragments that created a cascading effect of collateral impact damage to the other fan blades, the fan case, and the inlet cowl. One large blade fragment was deflected out of the fan containment plane, which pierced and exited the inlet cowl in a benign direction. The engine and airplane m…
  • WPR10LA0442009-11-02 · MCDONNELL DOUGLAS MD-90-30 · DELTA AIR LINES INC
    An in-flight collision with birds.
  • DCA24LA0512023-12-19 · BOEING 737 · SOUTHWEST AIRLINES CO
    A bird strike during climbout.
  • DCA15CA0372014-12-13 · BOEING 737 · Southwest Airlines, Co.
    an inadvertent encounter with birds during approach to land that resulted in substantial damage.
  • CEN12IA5022012-07-31 · BOEING 737-924ER · UNITED AIR LINES INC
    An in-flight collision with a bird during descent to land, which resulted in damage to the left pitot tube and loss of airspeed information to the left and right primary flight displays (PFD). The reason for the total loss of indications on the left PFD could not be determined based on available evidence.

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).