NTSB CAROL · Event
Event LAX87FA128
Registry · N356PS
FAA Aircraft Registry record.
Make / Model
PERGANDE MARK A CHALLENGER II
Year of manufacture
2017
Engine
ROTAX 503 DCDI (52 hp)
Seats / Engines
2 seats · 1 engine
Last airworthiness date
20170524
ADS-B equipped
Yes — Mode-S A3FC6D
Registrant of record
COBB HENRY H
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
FAILURE OF COMPANY MAINTENANCE PERSONNEL TO ADEQUATELY EXAMINE THE ENGINE LUBRICATION SYSTEM WHEN CONTAMINATION WAS DETECTED.
Factual narrative
THE FLIGHT WAS UNEVENTFUL DURING TAKEOFF AND CLIMB TO AN ASSIGNED CRUISE ALTITUDE OF FL260. APPROXIMATELY 40 MINUTES AFTER TAKEOFF THE NUMBER 3 ENGINE EXPERIENCED AN UNCONTAINED FAILURE OF THE TURBINE BLADES ON THE NUMBER 4 POWER TURBINE WHEEL. ALTHOUGH DEBRIS FROM THE ENGINE PENETRATED THE PRESSURE VESSEL, THE PILOT MADE AN UNSCHEDULED LANDING AT AN AIRPORT WITHOUT FURTHER INCIDENT. EXAMINATION OF THE ENGINE REVEALED THAT FERROUS CHIPS WERE CONTAMINATING, AND OIL WAS BYPASSING THE ENGINE OIL FILTER FOR AT LEAST 40 DAYS. HOWEVER, NO CORRECTIVE ACTION WAS TAKEN BY COMPANY MAINTENANCE PERSONNEL. THE OIL AND FILTER WERE CHANGED THREE TIMES IN THE THREE MONTHS PREVIOUS TO THE ACCIDENT. THE EXAM REVEALED THAT THE CONTAMINATED OIL CONTRIBUTED TO THE FAILURE OF THE NUMBER FOUR TURBINE BEARING SUBSEQUENTLY LEADING TO OVERHEATING AND DAMAGE TO THE OVERSPEED SENSORS. THE TURBINE OVERSPED AND THE TURBINE BLADES DEPARTED THE TURBINE DISC. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_1987_LAX87FA128.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.
Browse the full corpus — academia portal ↗