Service difficulty report · Bellcrank · Cessna 340A

Difficulty date
February 3, 2021
Submitted
February 4, 2021
Operation
General aviation
Aircraft
N6305X
Make and model
Cessna 340A
Aircraft serial
A3400511
Aircraft time
7,000 hours
Engine
Cont TSIO520NB
Part
Bellcrank
Part number
08411066
Condition
Cracked
Location
Rt Mlg Door
Part time
7,000 hours
Stage of operation
IN
How discovered
M
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

R/H INNER GEAR DOOR BELLCRANK IDLER HAD BROKEN IN TWO PIECES. CUSTOMER BOUGHT A NEW PART WITH HIM TO INSTALL. BREAKAGE LOOKED CLEAN WITH NO CORROSION AT THE BREAKAGE SURFACE. IN CONVERSATION WITH CUSTOMER, WE HAD THE LEFT SIDE REMOVED AND CHECKED IT IN SAME AREA WITH CERTIFIED NDT TEST WITH MAGNAFLUX PROCEDURE AND FOUND MULTIPLE SMALL CRACKS. BOTH SIDES SHOW TOOLING MARKS FROM MANUFACTURE IN CRACK AREAS.

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