Cases › DCA10LA083 › The analyst
EMBRAER ERJ 170 100 SESHUTTLE AMERICA CORP
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
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
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- about 11:33 CDTFDRcruisep.4Aircraft level at 29,000 ft for about 55 seconds before the alertsee the traces at this moment ↗
- about 11:34 CDTFDRcruisep.4TCAS Combined Control = Climb Correction and TCAS Up Advisory = CLIMB, lasting about 11 secondssee the traces at this moment ↗
Recorder events without a clock time
- +1 secondAutopilot Engaged transitioned to Not Engaged and the control column began moving aft; one second later AP Selected went to Not Selected and the column peaked at about 8 degrees aft, then moved forward to about -2 degrees a second later
- evasive maneuverPitch oscillated from about 2 degrees before the event to 7, then 3, then 5, leveling at about 4 degrees; vertical acceleration increased to about 2.4 g, dropped to 0.5 g, then 1.25 g before settling; aircraft climbed to 29,600 ft
- after the oscillationsTCAS Vertical Control indicated Increase for 6 seconds, ending with the other TCAS discretes
FLIGHT DATA RECORDER 10 - SPECIALIST'S FACTUAL REPORT (DCA10LA083) · 5 events extracted by claude-fable-5-1 (in-session)
How the Board coded the sequence
- Enroute-cruise: Collision avoidance alert→
- Enroute-change of cruise level: Abrupt maneuver→
- Enroute-change of cruise level: Near midair/TCAS alert/loss of separation
Precedents
8 closest casesranked by what happened, in the Board's words, and by the findings and occurrences it coded- BOEING 737-7H4 · SOUTHWEST AIRLINES COSanta Clarita, CA
- ●Aircraft › Aircraft oper/perf/capability › Performance/control parameters
Abrupt maneuverCollision avoidance alert - BOEING 757-224 · UNITED AIRLINES INCDunnigan, CAAbrupt maneuverNear midair/TCAS alert/loss of separation
- BRITTEN-NORMAN BN-2A · MCPHILLIPS FLYING SERVICE INCBeaver Island, MI
- ●Aircraft › Aircraft oper/perf/capability › Performance/control parameters
- DEHAVILLAND BEAVER DHC-2 MK.1 · Pacific Wings LLCPetersburg, AK
- ●Aircraft › Aircraft oper/perf/capability › Performance/control parameters
Abrupt maneuver - BOEING 717-200 · Air Tran AirwaysPleasant Grove, NCAbrupt maneuverCollision avoidance alert
- GATES LEARJET CORP. 35A · ROYAL AIR FREIGHT INCProspect Heights, IL
- ●Aircraft › Aircraft oper/perf/capability › Performance/control parameters
- BEECH 1900C · Alaska Central Express, Inc.Sand Point, AK
- ●Aircraft › Aircraft oper/perf/capability › Performance/control parameters
- AIRBUS A320-214 · Allegiant Air, LLCFort Lauderdale, FLAbrupt maneuverNear midair/TCAS alert/loss of separation
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
- 5 of 8Aircraft › Aircraft oper/perf/capability › Performance/control parameterscited here too
- 4 of 8Personnel issues › Task performance › Use of equip/info
- 2 of 8Personnel issues › Action/decision › Action
- 2 of 8Not determined › Not determined › (general)
Occurrences it coded
- 5 of 8Abrupt maneuver
- 3 of 8Collision with terr/obj (non-CFIT)
- 3 of 8Loss of control in flight
- 2 of 8Collision avoidance alert
- 2 of 8Near midair/TCAS alert/loss of separation
Set against the Board’s own findings for this case
Cited here, and common in the precedents
- Aircraft oper/perf/capability › Performance/control parameters
Cited here, not seen in the precedents
- —
Common in the precedents, not cited here
- Not determined › (general)
- Action/decision › Action
- Task performance › Use of equip/info
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
- WPR10LA1342010-02-13 · BOEING 737-7H4 · SOUTHWEST AIRLINES CO
The pilot’s abrupt airplane pitch change maneuver. Contributing to the accident was the flight crew’s failure to maintain the heading specified by the air traffic controller, which would have avoided the near collision course with an unidentified airplane that triggered the traffic alert and collision avoidance system resolution advisory.
- DCA24LA3162024-09-19 · BOEING 757-224 · UNITED AIRLINES INC
The abrupt pitch control input by the flight crew in response to a TCAS resolution advisory resulted in two serious passenger injuries.
- CEN22FA0312021-11-13 · BRITTEN-NORMAN BN-2A · MCPHILLIPS FLYING SERVICE INC
The pilot's exceedance of the airplane's critical angle of attack during final approach, which resulted in an aerodynamic stall and loss of control at an altitude too low to recover.
- ANC13FA0542013-06-04 · DEHAVILLAND BEAVER DHC-2 MK.1 · Pacific Wings LLC
The pilot’s failure to maintain adequate altitude above the trees, and his subsequent failure to maintain adequate airspeed while maneuvering to avoid the trees, which resulted in an inadvertent aerodynamic stall/spin and an uncontrolled descent.
- ERA10LA0412009-10-26 · BOEING 717-200 · Air Tran Airways
The captain's excessive maneuver in response to a traffic alert and collision avoidance system (TCAS) alert, which resulted in a serious injury to a flight attendant. Contributing to the accident was the operator's inadequate TCAS training and guidance.
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).