Service difficulty report · None · Boeing 7377H4

Difficulty date
September 1, 2022
Submitted
October 10, 2022
Operation
Air carrier
Aircraft
N952WN
Make and model
Boeing 7377H4
Aircraft serial
36667
Aircraft time
39,061 hours, 23,816 cycles
Part
None
Condition
Corroded
Location
Fuselage
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 BS986 FLOOR BEAM AT LBL42. / [01] CORROSION ON BS 986 FLOOR BEAM AT LBL 42 FOUND 100% OUT OF LIMITS DUE TO NO SRM ALLOWABLE DAMAGE ON THE PREVIOUS REPAIR. THE STRUCTURAL ITEM WILL BE REPAIRED BY REPLACEMENT IAW SRM 51-10-02 PAR 9C12] INSPECTED ACTION 10;11;[13] FABRICATED -1 T-CHORD FROM BAC1505-101474 7050-T76511 LOT# 1495939-1; -2 (2EA) ANGLES FROM BAC1490-2811 7075T6 CLAD LOT#1498610-1; -3 (2EA) ANGLES FROM BAC1490-2900 7075T6 CLAD LOT#1495938-1 AND -4 (2EA) STRAPS FROM 7075T6#0.080' CLAD LOT#1492623-1. TREATED IAW SRM 53-70-51-2R-4 REPAIR 4... OK TO PRIME;[14] LOCATED AND DRILLED NEW SHEAR TIE FROM TOOL ROOM SI# 7530797 IAW SRM 53-70-51-2R-4 REPAIR 4... OK TO INSTALL[18] FABRICATED 4 EA STRUCTURAL FILLERS FROM 7075T6#0.090' CLAD LOT#1482311-1. TREATED.... IAW SRM 53-70-51-2R-4 REPAIR 4 OK TO PRIME;[19] LOCATED AND DRILLED NEW CLIPS FROM TOOL ROOM PN#147A5615-6 (2 EA) AND PN#147A5615-5 (2EA) DUE TO THE OFFSET IAW SRM 51-40-05 AND IAW SRM 53-70-51-2R-4 REPAIR 4... OK TO INSTALL;[20] FABRICATED A STRUCTURAL FILLER FOR STIFFENFER AT LBL 3.5 AFT SIDE FROM 7075T6#0.090' CLAD LOT#1482311-1 PLUS 7075T6#0.080' CLAD LOT#1492623-1 PLUS 7075T6#0.071' CLAD LOT#1478276-1...TREATED IAW SRM 53-70-51-2R-4 REPAIR 4... OK TO PRIME;[25] INSTALLED -1 T-CHORD; -2 (2EA) & -3 (2EA) ANGLES; -4 (2EA) STRAPS AND (5EA) STRUCURAL FILLERS IAW SRM 53-70-51-2R-4 REPAIR 4

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