Service difficulty report · Nut

Difficulty date
December 15, 2010
Submitted
March 15, 2011
Operation
General aviation
Part
Nut
Part number
MS210423
Condition
Deformed
Stage of operation
IN
How discovered
9
Nature of condition
W
Precautionary procedure
K

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

What was found

(CAN) THESE STRUCTURAL SPACE-SAVER NUTS SEEM VERY DEFORMED BEYOND WHAT IS NORMAL FOR THIS TYPE OF FRICTION NUT. AME WAS UNABLE TO FIT A NORMAL BOX END WRENCH ON THE NUTS FOR TIGHTENING DUE TO DEFORMITY. WE CONSIDER THE MANUFACTURE OF THE NUTS TO BE SUBSTANDARD. POSSIBLE VENDOR QUALITY CONTROL ISSUES? AME COMMENDED FOR IDENTIFYING POSSIBLE DISCREPANCY AND STORES STAFF FOR BRINGING IT TO MY ATTENTION. STORES HAD ALREADY REMOVED THE AFFECTED NUTS FROM INVENTORY AND QUARANTINED THEM AND CONTACTED THE SUPPLIER. SAMPLE OF NUTS, ALONG WITH OUR AMO`S UNAPPROVED/BOGUS PARTS FINDINGS FORM, SENT TO LOCAL TRANSPORT CANADA REGIONAL OFFICE FOR ANALYSIS. (TC# 20110127002)