NTSB CAROL · Event
Event LAX97LA111
Aircraft involved
Probable cause & findings
the pilot's improper flare and improper recovery from a bounced landing, which resulted in a porpoise and subsequent overload failure of the nose gear.
Factual narrative
On February 24, 1997, at 1000 hours Pacific standard time, a Piper PA-28-236, N4341M, porpoised on landing and veered off runway 30 at the Palo Alto, California, airport. The aircraft sustained substantial damage, and the pilot, the sole occupant, was not injured. Visual meteorological conditions existed for the personal flight and no flight plan was filed. The flight originated from San Jose, California airport at 0940. The pilot reported that maintenance personnel had been asked to check the right brake because it was ". . .extremely soft. Maintenance reported that they had flown the aircraft several times and had no trouble with the brake." The pilot stated that on taxi he noticed that the right brake was still ". . .extremely soft but that it worked if pumped up." The pilot reported that the landing was normal, but during the landing rollout the aircraft drifted to the left. "I made the decision to go around and went full power with right rudder. The aircraft continued to drift left as I applied power and exited the runway. . .after landing I observed both wind socks straight out but at different angles with respect to the runway. I perceived the wind to be at 15+ KIAS with gusts at 20+ KIAS perpendicular to runway heading." The Federal Aviation Administration (FAA) controller on duty at the time reported the winds were from 010 degrees at 15 knots. The controller observed the aircraft bounce on touchdown, become airborne again, then porpoise down runway 30 three times with each bounce increasing in amplitude. On the third bounce, the nose gear collapsed and the aircraft slid off the left side of the runway. An FAA inspector from San Jose stated that she observed marks on the landing runway and the grassy area where the airplane came to rest. Flight control and engine continuity were established on scene with no evidence of a brake malfunction or other anomalies noted. An air traffic controller observed the aircraft bounce after touchdown, then porpoise three times down the runway with each bounce increasing in amplitude. After the third bounce, the nose gear collapsed, and the aircraft slid off the left side of the runway. The wind was from 010 degrees at 15 knots. Examination of the aircraft revealed no evidence of a brake failure or other malfunction. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_1997_LAX97LA111.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 (maintenance). Sourced from NASA NTRS, NTSB Safety Studies, FAA CAMI, AOPA Air Safety Institute, Embry-Riddle Scholarly Commons, arXiv, and the Semantic Scholar academic graph.
- Embry-Riddle Scholarly Commons 2026 · Journal article (IJAAA)
From Reactive to Predictive: A hybrid Trust-Mediated Adoption Framework for Data-Driven Maintenance in Distributed-Authority Aviation Environments
Modern aviation maintenance operates within increasingly data-intensive technological environments, yet the operational integration of predictive maintenance into routine decision-making remains incon…
- Semantic Scholar 2025 · Article (Applied Sciences)
Decision-Making Framework for Aviation Safety in Predictive Maintenance Strategies
The implementation of predictive maintenance (PM) in aviation presents unique challenges due to strict safety requirements, complex operational environments, and regulatory constraints.
- Embry-Riddle Scholarly Commons 2024 · Journal article (JAAER)
Low-Resource Automatic Speech Recognition Domain Adaptation – A Case-Study in Aviation Maintenance
With timeliness and efficiency being critical in the aviation maintenance industry, the need has been growing for smart technological solutions that optimize and streamline the different underlying ta…
- Embry-Riddle Scholarly Commons 2024 · Journal article (JAAER)
A New Trajectory in UAV Safety: Leveraging Reinforcement Learning for Distance Maintenance Under Wind Variations
In the field of aviation, safety is a critical cornerstone, and the operation of Unmanned Aerial Vehicle (UAV) systems is deeply connected with this principle.
- Embry-Riddle Scholarly Commons 2024 · Journal article (IJAAA)
Just Culture in Aviation: A Metaphorical Study on Aircraft Maintenance Students
Just Culture, a sub-dimension of safety culture, has been a prominent and debated topic in aviation safety in recent years.
- Embry-Riddle Scholarly Commons 2024 · Journal article (IJAAA)
Performance PRISM: A Comprehensive Framework For Performance Measurement In Aircraft Maintenance
Aircraft maintenance is governed by rigorous safety requirements and high operational complexity, demanding robust performance measurement frameworks to ensure optimal maintenance practices.
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