Service difficulty report · Stringer Splice · Boeing 7377H4

Difficulty date
March 27, 2022
Submitted
April 25, 2022
Operation
Air carrier
Aircraft
N762SW
Make and model
Boeing 7377H4
Aircraft serial
27876
Aircraft time
75,107 hours, 44,385 cycles
Part
Stringer Splice
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

STRINGER 26L SPLICE AT STA. 370 CORRODED / [01] REMOVED CORROSION ON STR26L SPLICE STA. 370; REF. B737-7 SRM 51-10-02-0G-0;[02] ORIGINAL MATERIAL 0.045'; MATERIAL REMOVED 0.020'; MATERIAL REMAINING 0.025' FOUND OUT OF LIMITS REF. B737-7 SRM 53-00-03-1A-1;[03] FABRICATED STRINGER SPLICE MATERIAL USED BAC1498-285-7075 PO#1763843 REF DWG#141A3341-12;[04] VERIFIED STEP 1; 2 AND 3;[05] HEAT TREATED STRINGER SPLICE TO 7075-T62 CONDITION REF. BAC5602 TAG #405072;[06] FABRICATED STRINGER SPLICE MATERIAL USED BAC1498-285-7075 PO#1763843; AND HEAT TREATED TO T62 CONDITION; TAG #4050072; REF USED BOEING DWG #141A3341; STRINGER SPLICE BEING INSTALLED ON TASK CARD # TTG8Q00BDSJ2;[07] VERIFIED STEPS 5 AND 6

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