CEN21LA358

NTSB accident investigation · Cessna 182 · Patterson, LA · July 27, 2021

Accident · No injuriesClass 3 · LimitedFinal report
Date
July 27, 2021, 08:30 local (13:30 UTC)
Place
Patterson, LA
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N148LPCessna 182
Defining event
Enroute: Powerplant sys/comp malf/fail
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
Investigation class
Class 3
NTSB office
Central Region
Parties
FAA FSDO`
FAA report
20210727012029A
Case key
103645

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 mechanic’s failure to properly secure the throttle arm rendering it loose and inoperable after takeoff, which resulted in a total loss of engine power.

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.

Engine controls: power leverAircraft › Aircraft power plant · Not serviced/maintainedCessna 182T: 1 caseAll aircraft: 95 casesProbable cause
AircraftAircraft › Aircraft power plant · FailureCessna 182T: 1 caseAll aircraft: 151 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

According to the pilot, shortly after takeoff, the engine would not respond to throttle inputs. The engine then went to idle without pilot input, and the pilot performed a forced landing to a marsh. During the forced landing, the airplane nosed over and was substantially damaged. Postaccident examination of the airplane found that the nut used to properly secure the throttle control to the fuel servo was loose. The associated cotter pin was not located. The pilot reported that the airplane’s most recent maintenance occurred on April 1, 2021. The mechanic likely did not install the cotter pin at that time. The accident airplane flew about 438 hours between that date and the accident date. During that time, the nut likely loosened until the throttle control was no longer secured, resulting in a total loss of engine power during the accident flight.

Factual narrative

On July 27, 2021, about 0830 central daylight time, a Cessna 182T airplane, N148LP, was substantially damaged when it was involved in an accident near Patterson, Louisiana. The pilot sustained minor injuries. The flight was operated under the provisions of Title 14 Code of Federal Regulations Part 91 as a business flight. The pilot reported that, shortly after departing, he leveled the airplane at an altitude of 2,000 ft and pulled back the throttle, but the engine did not respond. The engine rpm began to reach maximum speed as the pilot turned the airplane toward the departure airport. The engine then went to idle, and the pilot was unable to restore engine power, so he performed a forced landing to a marsh. During the landing, the airplane nosed over, and the forward fuselage sustained substantial damage. Postaccident examination of the airplane found that the nut used to secure the throttle on the throttle arm was loose. The associated cotter pin, which holds the nut in place, was not located in the engine compartment. The pilot reported that the airplane’s most recent maintenance occurred on April 1, 2021, and that the airplane flew about 438 hours between that date and the accident date.

Aircraft

Registration
N148LP
Reported as
Cessna 182 (T)
Category
Airplane
Serial number
18281148
Built
2002
Airframe hours
5,476.6
Engine
Continental IO-540-AB1A5, 230 horsepower, reciprocating
Damage
Substantial damage
Flight
Business · Part 91
Operator
Westbank Fishing LLC
Registered owner
Westbank Fishing LLC
Airworthiness certificate
Standard, Normal
Last inspection
Annual · April 1, 2021 · 437.6 hours before
Departed
KPTN · Patterson, LA
Flight plan
Company VFR
Airport
PTN
Equipment
Handheld GPS, Electronic multifunction display, Auto-pilot, ADS-B, Stall warning system, Satellite tracking device, Onboard weather

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
57
Injuries
Minor
Certificate
Commercial
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 2, With waivers/limitations
Last flight review
April 9, 2021
Seat
Left
Restraint
3-point
Flight hours
19,834 total · 5,000 in this make and model · 19,523 as pilot in command · 440 in the last 90 days · 8.2 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
10 statute miles
Lowest ceiling
None
Temperature
79 °F, dew point 79 °F
Altimeter
30.00 inHg
Observed at
KPTN, 3 nm away

Docket · 2

The files NTSB released with the investigation on November 8, 2022, on NTSB’s docket system: statements, records, photos and specialists’ reports. 7.8 MB 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.