Service difficulty report · Panel · Boeing 7378H4

Difficulty date
February 1, 2023
Submitted
March 10, 2023
Operation
Air carrier
Aircraft
N8524Z
Make and model
Boeing 7378H4
Aircraft serial
36970
Aircraft time
20,203 hours, 9,817 cycles
Part
Panel
Condition
Debonded
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

PANEL 193AR OUTER SKIN IS DISBONDED NEAR I/B EDGE. (MARKED)<[01] IDENTIFIED MATERIAL OF PANEL 193AR IAW SRM 53-40-70-0I-1 FIGURE 1-2; ITEM 18; TABLE 2<BR><BR>DAMAGE IS OUT OF ALLOWABLE DAMAGE LIMITS IAW SRM 53-40-70-1A-1 TABLE 101; PARA 4.A(6)<BR><BR>ENGINEERING REQUIRED DUE TO REPAIRS ARE LIMITED TO SRM 51-70-05 REPAIRS 1 AND 6 FOR THIS 350 PANEL PER SRM 53-40-70-02R-1 PARA 4.B(1); TABLE 201 (REPAIR PROCEDURES FOR 350 PANEL)(CORE DAMAGE NOTED)<BR><BR>VISUALLY EXAMINED EXTENT OF DAMAGE; TAP TESTED - DISBOND NOTED; REMOVED 1.5' X 3' OF OUTER SKIN AND FULL DEPTH CORE; CLEANED REPAIR AREA IAW SRM 51-70-05-2R-2 PARA 4.A-B PENDING ENGINEERING APPROVAL;[02] VERIFIED CORRECTIVE ACTION<BR><BR>VERIFIED MEASUREMENT TABLE;[03] REQUEST NDI OF DAMAGE REMOVAL IAW SRM 51-70-05-2R-0 PARA 4.A FOR ENINGEERING.;[04] ACCOMPLISHED UT DAMAGE REMOVAL INSPECTION IAW 737 NDTM PART 4 CHAPTER 51-00-02.<BR>NO DISBONDS NOTED.<BR><BR>EQUIPMENT USED: EPOCH 650 ID: ATS2031 CAL DUE: 03/2023;[05] VERIFIED REPAIR COMPLETION OF PANEL 193AR PER EA 23-153-00395;[06] VERIFIED CORRECTIVE ACTION 5

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