Service difficulty report · Floorbeam · Boeing 7377H4

Difficulty date
July 16, 2020
Submitted
August 17, 2020
Operation
Air carrier
Aircraft
N728SW
Make and model
Boeing 7377H4
Aircraft serial
27860
Aircraft time
73,319 hours, 43,208 cycles
Part
Floorbeam
Part number
143A9481
Condition
Corroded
Location
Bs 500d
Stage of operation
IN
How discovered
9
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

CORROSION ON AFT BULKHEAD LOWER SUPPORT ANGLE AT FWD CARGO BAY BS500D LBL23 TO RBL23 WL157. CORROSION FOUND ON FCB AFT BULKHEAD LOWER SUPPORT ANGLE BS-500D LBL-23 TO RBL-23 WL-157 FOUND TO BE OUT OF LIMIT DUE TO NO LIMIT ON SRM PARTS REPAIRED BY REPLACEMENT IAW SRM 51-10-02-09-0 PAR-9C. LOCATED AND DRILLED NEW SUPPORT P/N 143A9485-35 IAW SRM 51-40-05-0G-0 AND INSTALLED IAW SRM 51-40-02-0G-0 AND DWG #143A9481 REV-A

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