Cases › CEN11IA341 › The analyst
BEECH 1900DGreat Lakes Aviation
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.
28
timed facts
8
precedents
28
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
28 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- 06:03:46CVR STARTp.7“OF RECORDING”read in context ↗
- 06:22:18CVR HOT-1calloutp.7“it's this inside one right here. if not down first three thousand feet painted touchdown zone we'll do a go around.”read in context ↗
- 06:22:30CVR HOT-1calloutp.7“airport elevation five thousand four hundred thirty one feet. making the pattern at seven thousand. minimum safe altitude around the Denver V- O-R all sectors nine thousand two hundred feet. CEN11IA341”read in context ↗
- 06:25:04CVR HOTwarningp.12“[sound of low pitch tone, similar to altitude alert]”read in context ↗
- 06:28:40CVR TWRcalloutp.16“one fifty Denver tower be advised mike six is closed. runway three five left cleared to land. wind two seven zero at one zero.”read in context ↗
- 06:28:46CVR RDO-1calloutp.16“cleared to land three five left we'll plan at mike seven Lakes Air one fifty.”read in context ↗
- 06:28:51CVR HOT-1calloutp.16“cleared to land.”read in context ↗
- 06:28:52CVR HOT-2calloutp.16“cleared to land.”read in context ↗
- 06:29:03CVR HOTwarningp.16“[sound of high pitch tone, similar to gear warning horn]”read in context ↗
- 06:29:53CVR TWRcalloutp.18“Lakes Air one fifty we are done with those frequencies. so you are cleared to land three five left. we appreciate you accommodating us on that.”read in context ↗
- 06:29:58CVR RDO-1calloutp.18“no problem. cleared to land three five left Lakes Air one fifty.”read in context ↗
- 06:30:33CVR HOT-2calloutp.18“gear down. landing checks. props full forward.”read in context ↗
- 06:31:08CVR HOT-1calloutp.20“flaps are seventeen. yaw damper off. is complete. three green. cleared to land by the (tower). * down buckled brief. we've got an in transit light but we've got right hand nose and L which means we've got a locked left gear.”read in context ↗
- 06:31:51CVR GPWSwarningp.20“five hundred.”read in context ↗
- 06:32:10CVR HOTwarningp.20“[sound of alternating high pitch tone, similar to landing gear warning horn continues for 9.0 seconds]”read in context ↗
- 06:32:23CVR HOTwarningp.20“[sound of alternating high pitch tone, similar to landing gear warning horn continues for 2.8 seconds] CEN11IA341”read in context ↗
- 06:32:39CVR HOTwarningp.21“[sound of high pitch tone, similar to stall warning, continues until end of recording]”read in context ↗
- 06:32:57CVR TWRp.21“Lakes Air one fifty roger. I show three five left a closed runway and we are responding to you now. CEN11IA341”read in context ↗
- landing (about 06:33 MDT)FDRlanding rollp.2Just after touchdown the roll attitude registered about -11 degrees (left wing down) and remained there until the recording ended - left main gear collapsesee the traces at this moment ↗
- 06:33:01CVR RDO-1p.22“roger.”read in context ↗
- 06:33:03CVR TWRfinal secondsp.22“ops eight Denver tower.”read in context ↗
- 06:33:04CVR RDO-1final secondsp.22“Denver ops one fifty we had an emergency on the runway.”read in context ↗
- 06:33:09CVR CAMfinal secondsp.22“[sound of decrease in engine noise]”read in context ↗
- 06:33:09CVR HOT-1final secondsp.22“get that right brake in.”read in context ↗
- 06:33:11CVR OPSfinal secondsp.22“did somebody call ops.”read in context ↗
- 06:33:16CVR TWRfinal secondsp.22“*** continue to stand by.”read in context ↗
- 06:33:18CVR CAMfinal secondsp.22“[sound of further decrease in engine noise]”read in context ↗
- 06:33:23CVR PAXfinal secondsp.22“did a good job boys.”read in context ↗
Flight Data Recorder 10 - Specialist's Factual Report · 1 events extracted by claude-fable-5-1 (in-session)Cockpit Voice Recorder 12 - Factual Report of Group Chairman · 27 of 181 lines shown
How the Board coded the sequence
- Landing-landing roll: Landing gear collapse
Precedents
8 closest casesranked by what happened, in the Board's words, and by the findings and occurrences it coded- EMBRAER ERJ170 200LR · SKYWEST AIRLINES INCSan Antonio, TX
- ●Aircraft › Aircraft systems › Landing gear system
Landing gear collapse - BEECH 1900D · GREAT LAKES AVIATION LTDTelluride, CO
- ●Aircraft › Aircraft systems › Landing gear system
Landing gear collapse - BOEING 737-824 · United AirlinesDenver, CO
- ●Aircraft › Aircraft systems › Landing gear system
Landing gear collapse - BOEING 737 · Southwest Airlines, Co.Chicago, IL
- ●Aircraft › Aircraft systems › Landing gear system
Landing gear collapse - BOMBARDIER INC CL-600-2B1 · Atlantic Southeast AirlinesAtlanta, GA
- ●Aircraft › Aircraft systems › Landing gear system
Landing gear collapse - BOEING 737-890 · Alaska AirlinesSanta Ana, CA
- ●Aircraft › Aircraft systems › Landing gear system
Landing gear collapse - BEECH 1900D · Great Lakes AviationHays, KS
- ●Aircraft › Aircraft systems › Landing gear system
- Boeing 767 · Federal ExpressLos Angeles, CA
- ●Aircraft › Aircraft systems › Landing gear system
Landing gear collapse
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 8Aircraft › Aircraft systems › Landing gear systemcited here too
Occurrences it coded
- 7 of 8Landing gear collapse
- 3 of 8Sys/Comp malf/fail (non-power)
Set against the Board’s own findings for this case
Cited here, and common in the precedents
- Aircraft systems › Landing gear system
Cited here, not seen in the precedents
- Aircraft handling/service › Maintenance/inspections
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
- ENG17IA0052016-12-04 · EMBRAER ERJ170 200LR · SKYWEST AIRLINES INC
A failure of the nose landing gear down lock spring which precluded normal downlock operation of the nose landing gear. The spring failure was due to the presence of too much retained austenite which led to the formation of progressive cracking and subsequent failure of the spring.
- DCA13FA1482013-09-01 · BEECH 1900D · GREAT LAKES AVIATION LTD
Failure of the left main landing gear actuator internal lock to engage in the locked position for undetermined reasons.
- DCA20LA0472019-12-23 · BOEING 737-824 · United Airlines
Maintenance personnel’s excessive grinding of the left main landing gear’s aft trunnion pin during its initial overhaul, which caused heat damage to the base metal and led to the fatigue crack that caused the pin to fail during the accident flight. Contributing to the accident was the failure of maintenance personnel to detect the excessive grinding during the initial overhaul and the fatigue crack during the subsequent overhaul.
- ENG08IA0422008-10-01 · BOEING 737 · Southwest Airlines, Co.
The right nose landing gear axle's failure from intergranular and fatigue cracking due to an earlier bearing failure.
- ERA09IA3382009-06-11 · BOMBARDIER INC CL-600-2B1 · Atlantic Southeast Airlines
The failure of the left main landing gear to extend due to high levels of particulate contamination in the hydraulic fluid.
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).