CEN11CA062

NTSB accident investigation · Cessna 172 · Pineville, LA · November 9, 2010

Accident · No injuriesData collectionFinal report
Date
November 9, 2010, 14:00 local (20:00 UTC)
Place
Pineville, LA
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Initial climb
Aircraft
N9747LCessna 172
Defining event
Initial climb: Loss of engine power (partial)
Weather
Visual (VMC) · Day
Status
Completed · report March 16, 2011
Report
Approved by Office Director
NTSB office
Central Region
Parties
FAA Baton Rouge FSDO
FAA report
20101109050039A
Case key
77757

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 pilot/mechanic’s improper inspection of the airplane following the engine installation.

Findings · 2

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.

Maintenance/inspections: return to serviceAircraft › Aircraft handling/service · Inadequate inspectionCessna 172P: 1 caseAll aircraft: 14 casesProbable cause
Inspection: post maintenance inspectionPersonnel issues › Task performance · Maintenance personnelCessna 172P: 1 caseAll aircraft: 57 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

Following the installation of an overhauled engine and the completion of an annual inspection, the pilot/mechanic that had performed the work elected to fly the airplane. During takeoff the engine indications were normal and the airplane climbed to about 500 feet above ground level when the engine experienced a sudden power loss and the rpms decreased. The pilot then maneuvered the airplane in a 180-degree turn back toward the airport. He overshot the runway and the airplane sustained substantial damage during an off-airport forced landing. Federal Aviation Administration inspectors who responded to the scene discovered that the throttle control linkage was not connected to the carburetor throttle plate arm; the associated bolt, castellated nut, and cotter pin were missing. The pilot/mechanic stated that he had connected the throttle control linkage but could not remember if he had installed the cotter pin.

Factual narrative

Following the installation of an overhauled engine and the completion of an annual inspection, the pilot/mechanic that had performed the work elected to fly the airplane. During takeoff the engine indications were normal and the airplane climbed to about 500 feet above ground level when the engine experienced a sudden power loss and the rpms decreased. The pilot then maneuvered the airplane in a 180-degree turn back toward the airport. He overshot the runway and the airplane sustained substantial damage during an off-airport forced landing. Federal Aviation Administration inspectors who responded to the scene discovered that the throttle control linkage was not connected to the carburetor throttle plate arm; the associated bolt, castellated nut, and cotter pin were missing. The pilot/mechanic stated that he had connected the throttle control linkage but could not remember if he had installed the cotter pin.

Aircraft

Registration
N9747L
Reported as
Cessna 172 (P)
Category
Airplane
Serial number
17276606
Airframe hours
3,947
Engine
Lycoming O320, 160 horsepower, reciprocating
Damage
Substantial damage
Flight
Flight test · Part 91
Operator
Civil Air Patrol Inc
Registered owner
Civil Air Patrol Inc
Airworthiness certificate
Standard, Normal
Last inspection
Annual · November 8, 2010 · 0 hours before
Departed
2L0 · Pineville, LA
Destination
2L0 · Pineville, LA
Airport
2L0 · Pineville Municipal Airport, runway 18, 3,000 × 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
38
Injuries
None
Certificates
Commercial, Flight instructor
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 2, With waivers/limitations
Last flight review
August 1, 2010
Seat
Left
Flight hours
7,200 total · 2,500 in this make and model · 7,100 as pilot in command · 100 in the last 90 days · 35 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
220° at 5 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
75 °F, dew point 54 °F
Altimeter
29.98 inHg
Observed at
KESF, 5 nm away

Docket · 1

The files NTSB released with the investigation on December 2, 2010, on NTSB’s docket system: statements, records, photos and specialists’ reports. 506 KB in all.

FAA reports on this event · 1

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