NTSB CAROL · Event
Event IAD97GA054
Registry · N892CP
FAA Aircraft Registry record.
Make / Model
CESSNA 172S
Year of manufacture
2023
Engine
LYCOMING IO-360-L2A (180 hp)
Seats / Engines
4 seats · 1 engine
Last airworthiness date
20231005
ADS-B equipped
Yes — Mode-S AC4D02
Registrant of record
CIVIL AIR PATROL
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
The engine failure from the rod cap bolt being sheared and the separation of the number two cylinder separating from the crankcase.
Factual narrative
On March 19, 1997, at about 2313 eastern standard time, a Schweitzer 268C helicopter, N892CP, operated by the City of Cleveland as a police helicopter, crashed into a vacant parking lot while on routine patrol in Cleveland, Ohio. The flight was conducted under the provisions of Title 14 CFR 91. The pilot and passenger both stated that they heard a loud noise and the engine quit. The pilot executed an autorotation into a parking lot causing substantial damage to the helicopter. The private pilot and passenger were not injured. Visual meteorological conditions prevailed and no flight plan was filed for the local flight. The pilot stated while on patrol over the city of Cleveland "at about 500 feet above ground level, the helicopter experienced major engine failure". The pilot attempted to autorotate the helicopter to a vacant parking lot. Upon impact, the tail rotor snapped off and the helicopter turned 180 degrees to the left. Examination of the engine by NTSB, Textron Lycoming, G&W aircraft, and Cleveland Police Department found the number two cylinder had separated from the engine block and the rod cap bolt had been sheared. There were indications of wear to the number two cylinder deck and number two barrel flange. There was also heavy fretting to the number two and number three bearing crankcase saddles. Maintenance records show the removal and reinstallation of the number one cylinder at 646.2 hours since overhaul which was 66.6 hours prior to the accident. The pilot stated while on patrol 'at about 500 feet above ground level, the helicopter experienced major engine failure'. The pilot attempted to autorotate the helicopter to a vacant parking lot. Upon impact, the tail rotor snapped off and the helicopter turned 180 degrees to the left. Examination of the engine found the number two cylinder had separated from the engine block and the rod cap bolt had been sheared. Maintenance records show the removal and reinstallation of the number one cylinder at 646.2 hours since overhaul which was 66.6 hours prior to the accident. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_1997_IAD97GA054.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, engine failure, 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 2023 · Conference paper
The Value of Strong Partnerships to Build a Successful Aviation Maintenance Career Pathway Program for Transitioning Military Service Members
The aerospace industry is competing with other industries for a qualified workforce, and many of those competing industries are investing heavily in creating workforce development pipelines.
- 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…
- 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 …
- 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.
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