NTSB CAROL · Event
Event LAX90LA150
Aircraft involved
Probable cause & findings
INADEQUATE ALTITUDE FOR PROPER LANDING GEAR EXTENSION; NOT ENSURING THE LANDING GEAR WAS DOWN AND LOCKED; COMPLACENCY OF THE CERTIFIED FLIGHT INSTRUCTOR.
Factual narrative
ACCORDING TO STATEMENTS FROM ALL THREE INDIVIDUALS ON BOARD, UPON ARRIVING IN THE VICINITY OF PASO ROBLES AIRPORT AT ABOUT 5,800 FEET ABOVE THE AIRPORT, THE INSTRUCTOR SHUT DOWN THE ENGINE TO SIMULATE AN ENGINE FAILURE. THE PILOT BEING TRAINED WAS INSTRUCTED TO GLIDE THE AIRCRAFT TO A SAFE LANDING AT THE AIRPORT. DURING THE SIMULATED EMERGENCY DESCENT, THE PILOT BEING TRAINED ASKED SEVERAL TIMES IF THE GEAR SHOULD NOT BE EXTENDED UNTIL THE TURN FROM BASE TO FINAL WAS BEING MADE. THE WITNESSES ABOARD THE AIRCRAFT FURTHER STATED THAT ON SHORT FINAL, AT A VERY LOW ALTITUDE, THE GEAR WAS LOWERED USING THE EMERGENCY GEAR EXTENSION PROCEDURE. THE LEFT MAIN GEAR DID NOT FULLY EXTEND AND LOCK INTO POSITION PRIOR TO THE AIRCRAFT TOUCHING DOWN ON THE RUNWAY. ON TOUCHDOWN, THE LEFT MAIN GEAR COLLAPSED, CAUSING THE LEFT WING TO COLLIDE WITH THE RUNWAY. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_1990_LAX90LA150.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 (engine failure). Sourced from NASA NTRS, NTSB Safety Studies, FAA CAMI, AOPA Air Safety Institute, Embry-Riddle Scholarly Commons, arXiv, and the Semantic Scholar academic graph.
- arXiv 2022 · arXiv preprint
Multi-level Adaptation for Automatic Landing with Engine Failure under Turbulent Weather
This paper addresses efficient feasibility evaluation of possible emergency landing sites, online navigation, and path following for automatic landing under engine-out failure subject to turbulent wea…
- NASA NTRS 2019 · Conference Paper
Simulation of Liquid Rocket Engine Failure Propagation Using Self-Evolving Scenarios
Traditional probabilistic risk assessment approaches often require failure scenarios to be explicitly defined through event sequences that are then quantified as part of the integrated analysis.
- NASA NTRS 2019 · Conference Paper
Rocket engine failure detection using system identification techiques
The theoretical foundation and application of two univariate failure detection algorithms to Space Shuttle Main Engine (SSME) test firing data is presented.
- NASA NTRS 2019 · Conference Paper
Rocket engine failure detection using system identification techniques
The theoretical foundation and application of two univariate failure detection algorithms to Space Shuttle Main Engine (SSME) test firing data is presented.
- NASA NTRS 2019 · Technical Memorandum (TM)
A simulator investigation of engine failure compensation for powered-lift STOL aircraft
A piloted simulator investigation of various engine failure compensation concepts for powered-lift STOL aircraft was carried out at the Ames Research Center.
- Semantic Scholar 2019 · Article (AIAA Scitech 2019 Forum)
Impact of Engine Failure Constraints on the Initial Sizing of Hybrid-Electric GA Aircraft
Potential advantages of hybrid-electric aircraft are fuel savings, lower emissions, and reduced noise. Since these aircraft generally apply multiple power sources, they can also be designed to sustain…
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