CHI08CA139

NTSB accident investigation · Cessna 172N · Blue Ash, OH · May 24, 2008

Accident · No injuriesData collectionFinal report
Date
May 24, 2008, 08:45 local (12:45 UTC)
Place
Blue Ash, OH
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N75528Cessna 172N
Defining event
Approach: Powerplant sys/comp malf/fail
Weather
Visual (VMC) · Day
Status
Completed · report June 30, 2008
Report
Approved by Office Director
Parties
Cincinnati, OH, FSDO
FAA report
20080524840169A
Case key
68149

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

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Probable cause

The separation of the throttle cable from the linkage during the approach to land and the altitude/clearance not being available to the pilot during the forced landing. Contributing to the accident was the electrical wires the airplane impacted.

Findings · 3

NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.

Object/animal/substance: wireEnvironmental issues › Physical environment · Contributed to outcomeCessna 172N: 7 casesAll aircraft: 588 casesProbable cause
Performance/control parameters: altitudeAircraft › Aircraft oper/perf/capability · Attain/maintain not possibleCessna 172N: 8 casesAll aircraft: 1,310 casesProbable cause
Engine fuel and controlAircraft › Aircraft power plant · FailureCessna 172N: 1 caseAll aircraft: 49 casesProbable cause

Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.

Analysis

On the student pilot's sixth practice landing approach, he pulled the throttle back and the engine went to full power. He pulled the mixture control out to stop the engine running at full power. He set up a best glide speed and determined that for the conditions present that the "approach would fall short of the runway." The wheels impacted electric wires and the airplane came to rest inverted. Federal Aviation Administration Inspectors examined the wreckage and found that the throttle cable end separated from the linkage.

Factual narrative

On the student pilot's sixth practice landing approach, he pulled the throttle back and the engine went to full power. He pulled the mixture control out to stop the engine running at full power. He set up best glide speed and determined that for the conditions present that the "approach would fall short of the runway." The wheels impacted electric wires and the airplane came to rest inverted. Federal Aviation Administration Inspectors examined the wreckage and found that the throttle cable end separated from the linkage.

Aircraft

Registration
N75528
Reported as
Cessna 172N
Category
Airplane
Serial number
17267783
Airframe hours
16,354
Engine
Lycoming O-320-H2AD, 160 horsepower, reciprocating
Damage
Substantial damage
Flight
Instructional · Part 91
Registered owner
Blue Ash Aviation LLC
Airworthiness certificate
Standard, Normal
Last inspection
Continuous airworthiness · May 1, 2008
Departed
ISZ · Blue Ash, OH
Airport
ISZ · Cincinnati-Blue Ash Airport, runway 6, 3,499 × 75 ft, asphalt

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
58
Injuries
None
Certificate
Student
Medical
Class 3, With waivers/limitations
Seat
Left
Flight hours
128 total · 122 in this make and model · 51 as pilot in command · 12 in the last 90 days · 3 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
50° at 6 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
57 °F, dew point 46 °F
Altimeter
30.18 inHg
Observed at
LUK

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.