Cessna 172M N172WW

Summary

On 10 September 2004 at about 15:50 local time, a Cessna 172M registered N172WW was involved in an accident near Medina, Ohio, United States. One person was on board and nobody was injured. The aircraft was substantially damaged. The NTSB has published a probable cause for this accident; it is quoted in full below.

Date

10 September 2004 at 15:50

Classification

Accident

Location

Medina, Ohio, United States

Nearest airport

Medina Municipal Airport (1G5)

Coordinates

41.1314, -81.7647

Aircraft

Cessna 172M

Registration

N172WW

Category

Airplane

Engines

1

Operator

Not recorded

Operating rule

Part 91: General Aviation

Purpose of flight

Personal

Phase of flight

Not recorded

Route

Medina → Unknown

Aircraft damage

Substantial

Weather

VMC

Light

Day

NTSB number

NYC04LA211

Nobody was injured.

The partial loss of engine power due to inadequate maintenance and by failure to comply with service instruction for low engine compression.

Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.

Read the full NTSB narrative

During the takeoff roll, as the pilot rotated at 60 knots, he felt the airplane was "slow to lift," and aborted the takeoff. He reduced the power to idle and applied the brakes; however, the airplane traveled off the end of the runway, impacted a fence, and nosed over in a ditch. Examination of the Lycoming engine revealed low compression in the number 3 cylinder, due to a fractured cylinder ring. The last 100-hour inspection was performed approximately 3 weeks prior to the accident, and the airplane had flown 1 hour since then. The entry for the inspection revealed a compression check of the number 3 cylinder resulted in a reading of 55/80 psi. According to 14 CFR Part 43 Appendix D, "Each person shall inspect components of the engine and nacelle as follows...Internal engine - for cylinder compression...If there is a weak cylinder compression, [inspect] for improper internal condition and improper internal tolerances." Lycoming Service Instruction No. 1191A, stated in part, "Pressure readings for all cylinders should be nearly equal...a difference of 10 to 15 psi indicates an investigation should be made...if the pressure reading for cylinders is below 60 psi...removal and overhaul of the cylinders should be considered."

Quoted verbatim from the NTSB record.