N245KW

Substantial
Minor

Piper PA 18AS/N: 18-2495

Accident Details

Date
Monday, May 8, 2017
NTSB Number
WPR17LA102
Location
COEUR D'ALENE, ID
Event ID
20170508X05228
Coordinates
47.774444, -116.819442
Aircraft Damage
Substantial
Highest Injury
Minor
Fatalities
0
Serious Injuries
0
Minor Injuries
1
Uninjured
0
Total Aboard
1

Probable Cause and Findings

The loss of yaw control due to an inadequately compressed rudder swage, which resulted from inadequate maintenance and led to the separation of the forward right rudder cable.

Aircraft Information

Registration
Make
PIPER
Serial Number
18-2495
Engine Type
Reciprocating
Model / ICAO
PA 18AM600
Aircraft Type
Fixed Wing Single Engine
No. of Engines
1
Seats
2
FAA Model
PA-18A

Registered Owner (Current)

Name
CARSON CUBS LLC
Address
11231 AIR PARK LN SE
City
YELM
State / Zip Code
WA 98597-9600
Country
United States

Analysis

On May 8, 2017, about 1330 Pacific daylight time, a Piper PA18A airplane, N245KW, sustained substantial damage when it impacted terrain shortly after takeoff from Coeur d'Alene Airport (COE), Coeur d'Alene, Idaho. The private pilot sustained minor injuries. The airplane was registered to and operated by the pilot under the provisions of Title 14 Code of Federal Regulations Part 91 as a personal flight. Visual meteorological conditions prevailed, and no flight plan had been filed for the local flight.

The purpose of the flight was to practice maneuvers in the local area. The pilot, who was seated in the front seat, reported that during takeoff he applied one notch of flaps to assist with a shorter takeoff roll. During the initial climb, the airplane yawed to the left and he applied the right rudder; however, the airplane did not respond. About 50 to 75 ft above ground level, the pilot retarded the throttle, and initiated a forced landing. The airplane impacted the ground in a nose down attitude and came to rest oriented about 90° perpendicular to the runway.

On July 20, 2017, the airplane was examined at a secure facility by an NTSB Investigator accompanied by a Federal Aviation Administration Inspector. The right rudder pedal was found full forward against the firewall and trapped behind the cabin's front "V" brace. The right rudder cable, between the front and rear seat, had detached at the rear seat foot pedal connection. The thimble remained attached to the rear seat pedal assembly, and the free end of the cable was found loosely threaded through its swage sleeve. The failed rudder cable and swage sleeve appeared bright and clean when compared to the remaining rudder cables in the system, consistent with its recent replacement.

There was no annotation in the maintenance logbooks indicating the cable had been replaced.

Right rudder cable from rudder intact. Cable thimble to front seat attached, cable missing

Data Source

Data provided by the National Transportation Safety Board (NTSB). For more information on this event, visit the NTSB Records Search website. NTSB# WPR17LA102