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Atlas / NTSB / IAD97GA054

NTSB CAROL · Event

Event IAD97GA054

1997-03-20 CLEVELAND, Ohio, United States Airport · BKL None 1 aircraft Status: Completed

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 ↗.

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.

Browse the full corpus — academia portal ↗