Service difficulty report · Barrier · Boeing 7377CT

Difficulty date
February 1, 2023
Submitted
March 8, 2023
Operation
Air carrier
Aircraft
N567WN
Make and model
Boeing 7377CT
Aircraft serial
32747
Aircraft time
67,166 hours, 34,728 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

RT BS 663 VAPOR BARRIER CRACK RBL 45.<[01] MEASUREMENTS;[02] PERFORMED VISUAL INSPECTION ON R/H VAPOR BARRIER AND FOUND CRACK OF 9' PER B737 NDTM 51-05-01;[03] PERFORMED STOP DRILL SIZE 0.25 DIAMETER AT THE END OF THE CRACK PER B737 SRM 57-10-10-2R-2 STEP 6.B;[04] PREPARED DAMAGED AREA ON VAPOR BARREIR FOR REPAIR PER B737 SRM 51-70-04-2R-10 AND 51-70-04-2R-0 PARAGRAPH 4.E;[05] VERIFIED STEP # 1;2; 3 AND 4;[06] OK TO INSTALL REPAIR;[07] REPAIRED R T BS 663 VAPOR BARRIER AS PER B737 SRM 51-70-04-2R-10 MATERIAL USED PO.1800112 AND PO.1690463;[08] VERIFIED STEP 7. OK TO APPLY TOP COAT.;[09] APPLIED PRIMER AND TOPCOAT ON RT VAPOR BARRIER REF B 737 AMM 21-21-81-370-801 AND 51-21-72-370-804;[10] LOCATED AND DRILLED VAPOR BARRIER AT BS 663 RBL 45 PER REF SRM 51-40-05-0G-0.;[11] VERIFIED STEPS #9 AND #10.;[12] FINAL INSPECTION; VAPOR BARRIER REPAIRED. ALL WORK PERFORMED.;[13] INSTALLATION OF VAPOR BARRIER AT STA 663 RBL 45 WILL BE ACCOMPLISH ON TASK CARD #TTG8Q00HL9HJ.;[14] ADD TO STEP #12. <BR> INSTALLATION OF VAPOR BARRIER AT STA 663 RBL 45 WILL BE ACCOMPLISH ON TASK CARD #TTG8Q00HL9HJ.

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