NTSB CAROL · Event
Event NYC89IA185
Registry · N915TS
FAA Aircraft Registry record.
Make / Model
DENNIS LEWIS MALONEY MODEL 3
Seats / Engines
2 seats · 1 engine
ADS-B equipped
Yes — Mode-S ACAAF8
Registrant of record
LEWIS DENNIS G
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
THE FAILURE OF THE LANDING GEAR DRAG BRACE TO UNLOCK DURING LANDING. CONTRIBUTING WAS THE FAILURE OF PACIFIC SOUTHWEST AIRLINES TO CATCH THE INCORRECT ASSEMBLY. AN ADDITIONAL FACTOR WAS THE USE OF FAULTY INFORMATION BY EASTERN AIRLINES AND THEIR DECISION TO NOT MAKE THE INSPECTION REQUIRED BY THE BOEING SERVICE LETTER.
Factual narrative
THE CREW OF A BOEING 727 WAS UNABLE TO LOWER THE NOSE LANDING GEAR BY EITHER NORMAL MEANS OR BY USE OF THE MANUAL HANDCRANK. A NOSE GEAR UP LANDING WITH AN EMERGENCY EVACUATION THROUGH THE L1/R1 EXITS WAS MADE. POST INCIDENT INVESTIGATION SHOWED THAT BOTH LINKS WHICH REMOVE THE LOCKING PAWLS IN THE NOSE GEAR DRAG BRACE WERE FRACTURED. WHEN EXAMINED AT BOEING METALLURGICAL LABORATORY, NO EVIDENCE WAS FOUND THAT BUSHINGS WERE INSTALLED. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_1989_NYC89IA185.txt.
Findings + structured fields enriched from FAA avall.mdb.
Full investigation docket on
data.ntsb.gov ↗.
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Related research
What the literature says.
Academic papers and agency reports matching this event's aircraft type or causal vocabulary (stall). Sourced from NASA NTRS, NTSB Safety Studies, FAA CAMI, AOPA Air Safety Institute, Embry-Riddle Scholarly Commons, arXiv, and the Semantic Scholar academic graph.
- NASA NTRS 2026 · Conference Paper
Computational Analysis of Steady State Aerodynamics of Transonic Truss-Braced Wing Configuration in Deep Stall
This study presents a computational investigation of steady state aerodynamics of the Subsonic Ultra-Green Aircraft Research (SUGAR) Transonic Truss-Braced Wing (TTBW) configuration over a wide range …
- arXiv 2023 · arXiv preprint
Automating Bird Diverter Installation through Multi-Aerial Robots and Signal Temporal Logic Specifications
This paper tackles the task assignment and trajectory generation problem for bird diverter installation using a fleet of multi-rotors.
- arXiv 2023 · arXiv preprint
Variation of Critical Crystallization Pressure for the Formation of Square Ice in Graphene Nanocapillaries
Two-dimensional square ice in graphene nanocapillaries at room temperature is a fascinating phenomenon and has been confirmed experimentally.
- arXiv 2023 · arXiv preprint
Polycrystallinity enhances stress build-up around ice
Damage caused by freezing wet, porous materials is a widespread problem, but is hard to predict or control. Here, we show that polycrystallinity makes a great difference to the stress build-up process…
- arXiv 2022 · arXiv preprint
Enhanced Prediction of Three-dimensional Finite Iced Wing Separated Flow Near Stall
Icing on three-dimensional wings causes severe flow separation near stall. Standard improved delayed detached eddy simulation (IDDES) is unable to correctly predict the separating reattaching flow due…
- Embry-Riddle Scholarly Commons 2021 · Journal article (JAAER)
Analysis on the Negative Emotional, Physiological, and Cognitive Responses Elicited from of the Activation of a Stall Alarm
Failing to identify an aerodynamic stall can lead to the inability of an aircraft to sustain flight. To warn pilots of an impending or fully-developed stall, many aircraft have safety devices installe…
Browse the full corpus — academia portal ↗