Service difficulty report · Panel · Boeing 7377H4

Difficulty date
February 3, 2023
Submitted
March 2, 2023
Operation
Air carrier
Aircraft
N404WN
Make and model
Boeing 7377H4
Aircraft serial
27892
Aircraft time
72,784 hours, 43,149 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 521WB IS DISBONDED AT CORNER<[01] IDENTIFIED 521WD PANEL IAW SRM 57-41-01-0I-4 PARA FIGURE 2; ITEM 1; TABLE 2.<BR><BR>FOUND DAMAGE TO BE OUT OF ALLOWABLE LIMITS IAW SRM 51-41-01-1A-1 PARA 4.A.(5)<BR><BR>REMOVED BONDED ALUMINUM FOIL TO FACILITATE REPAIR.<BR>REMOVED 2EA BACKUP PLATES TO FACILITATE REPAIR IAW SRM 51-40-02-0G-0 PARA FIGURE 8.<BR><BR>LIGHTLY SANDED DAMAGED PLIES AND CLEANED PANEL SURFACE IAW SRM 51-70-05-2R-6 AS PER 57-41-01-2R-1 PARA TABLE 202;[02] CORRECTION: WILL PERFORM WORK IAW SRM 51-70-05-2R-6 AS PER 57-41-01-2R-1 PARA TABLE 202<BR>LIGHTLY SANDED DAMAGED PLIES AND CLEANED PANEL SURFACE IAW SRM 51-70-05-2R-6 PARA 4.B[11] UT INSPECTED REPAIR AREA PER NDTM PT4 51-00-02; NO DISBONDS NOTED<BR>EQUIP ID ATS843 DUE 06/2023;[12] FABRICATED AND INSTALLED REPAIR PLY OF BONDED ALUMINUM FOIL BMS 8-289 LOT: 1507307-1 USING ADHESIVE BMS 5-128 LOT: JH2FAL7046<BR>ASSEMBLED VACUUM BAG AND PERFORMED 5X5 TEST USING VACUUM GAUGE ATS2798 DUE: 10/2023. PASSED LEAK TEST. <BR>CURED ADHESIVE USING THERMOMETER ATS2208 DUE: 10/2023<BR>REMOVED VACUUM BAG AND TRIMMED EDGES FROM EXCESSIVE MATERIAL. IAW SRM 51-70-14-2R-3 PARA 4.A.(3-5; 11)(A-L)

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