Service difficulty report · Bellcrank · Cessna 560XL

Difficulty date
August 4, 2014
Submitted
August 4, 2014
Operation
Air carrier
Aircraft
N604QS
Make and model
Cessna 560XL
Aircraft serial
5605204
Aircraft time
11,145 hours, 8,896 cycles
Part
Bellcrank
Part number
664264614
Condition
Worn
Location
Nlg Steering
Stage of operation
IN
How discovered
C
Nature of condition
O
Precautionary procedure
K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

DURING TROUBLESHOOTING OF A STEERING KNOCKING SOUND, FOUND THE BOLT THAT ATTACHES THE CABLE TO THE STEERING BELLCRANK WAS ROCKING IN THE BELLCRANK. AFTER REMOVAL OF THE CABLES, IT WAS NOTED THAT THE UPPER HOLE IN THE BELLCRANK WAS ELONGATED & THE BACK SIDE OF THE BELLCRANK WHERE THE WASHER UNDER THE BLOT HEAD SITS WAS WORN INTO THE MATERIAL OF THE BELLCRANK. THE BELLCRANK HAS NO BUSHING OR BEARING INSTALLED FOR THE BOLT TO WEAR INTO. IT IS JUST A PLAIN ALUMINUM BELLCRANK WITH A STEEL BOLT INSTALLED THROUGH IT. THE CABLE END IS A LOLLIPOP STYLE & NOT A FORK STYLE, THUS WHEN THE CABLE IS TENSIONED, THE BOLT IS ALWAYS SIDE-LOADED & WEARS INTO THE BELLCRANK. BELLCRANK ASSEMBLY REPLACED WITH NEW HARDWARE.

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