Service difficulty report · Barrier · Boeing 7377H4

Difficulty date
April 18, 2023
Submitted
May 25, 2023
Operation
Air carrier
Aircraft
N959WN
Make and model
Boeing 7377H4
Aircraft serial
36674
Aircraft time
38,285 hours, 23,370 cycles
Part
Barrier
Condition
Cracked
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

RH VAPER BARRIER IS CRACKED AT BS 663; RBL38; WL 159.<[01] IDENTIFIED THE PANEL IAW SRM 57-10-10-0I-2 FIGURE 2 ITEM [4]. DAMAGE TO THE PANEL IS BEYOND ALLOWABLE LIMITS IAW SRM 57-10-10-1A-2 PARAGRAPH 4.D.(1) AND WILL BE REPAIRED IAW SRM 51-70-04-2R-10 PER SRM 57-10-10-2R-2 PARAGRAPH 1.C. REMOVED DAMAGE PLIES FROM THE FULL WIDTH OF THE PANEL LOCATED ABOUT 35 ' FROM THE INBOARD EDGE AND PREPPED AREA FOR THE REPAIR; WORK PERFORMED IAW SRM 51-70-04-2R-10 PARAGRAPH 4.A-C.;[02] VALIDATED APPLICABILITY OF SRM 51-70-04-2R-10.;[03] UPDATED MEASUREMENTS.;[04] INSPECTED AND VERIFIED CORRECTIVE ACTIONS 1; 2 AND 3.<BR><BR>VERIFIED MEASUREMENTS TABLE.;[05] FABRICATED FORWARD REPAIR PLY FROM BMS9-3 STYLE 1581 H2 LOT NUMBER 1522395-2 IAW SRM 51-70-04-2R-10 PARAGRAPH 4.D OK TO INSTALL FORWARD REPAIR PLY.;[06] INSPECTED AND VERIFIED CORRECTIVE ACTION 5. OKAY TO INSTALL REPAIR PLIES.;[07] INSTALLED REPAIR PLIES WITH BMS8-301 CLASS 1 LOT JH2EAA8895; VACUUM BAGGED AND VERIFIED A SATISFACTORY 5X5 USING VACUUM GAUGE ID: E11543 DUE: 09/2023; WORK PERFORMED IAW SRM 51-70-04-2R-10 PARAGRAPH 4.D-E.

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