Service difficulty report · Intercostal · Boeing 7378H4

Difficulty date
May 22, 2023
Submitted
June 16, 2023
Operation
Air carrier
Aircraft
N8535S
Make and model
Boeing 7378H4
Aircraft serial
63596
Aircraft time
19,603 hours, 9,695 cycles
Part
Intercostal
Part number
UNKNOWN
Condition
Corroded
Location
Zn 100 Fus Lower
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 INTERCOSTAL STA 949; RBL 49; WL 208.<[01] VERIFIED APPLICABILITY PER SRM 53-70-51-1A-1 ALLOWABLE DAMAGE 1;[02] EVALUATED CORROSION ON INTERCOSTAL STA 949; RBL 49; WL 208 PLACES 1'X1' INCH LOWEST MATERIAL REMOVED IS 0.050' ADJACENT TO ORIGINAL MATERIAL THICKNESS 0.150' FOUND TO BE OUT LIMITS I.A.W SRM 53-70-51-1A-1 ALLOWABLE DAMAGE 1 PAR 4.A(2) (A) FIGURE 104/ALLOWABLE DAMAGE 1 DETAIL E <BR>TOOLS USED ON CORRECTIVE ACTION 2<BR>ATS1225<BR>S/N UNKNOWN<BR>DUE 08/2023<BR>ATS2738<BR>S/N A22004095<BR>DUE 04/2024;[03] INTERCOSTAL STA947-BS967; RBL50; WL 208 TO BE REMOVED; DRILLED AND INSTALLED A NEW ON COSTUMER CARD TTG8Q00L6RSM STEP 2;[04] VERIFIED CORRECTION ACTION ITEM 1;2;3 OUT OF LIMITS.;[05] COMPLETED TASK;[06] VERIFIED CORRECTIVE ACTION 5

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