Service difficulty report · Attach Angle · Boeing 7378H4

Difficulty date
March 21, 2023
Submitted
April 26, 2023
Operation
Air carrier
Aircraft
N8529Z
Make and model
Boeing 7378H4
Aircraft serial
36974
Aircraft time
19,992 hours, 9,666 cycles
Part
Attach Angle
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

L/H BS663 UPPER ATTACH ANGLE IS CRACKED ON VAPOR BARRIER LBL8 WL167.68<REMOVED DAMAGED SECTION OF LH BS663 VAPOR BARRIER UPPER ATTACH ANGLE LBL8-LBL20 WL167.68 IAW SRM 57-10-10-2R-5. RECEIVED REPAIR PARTS FOR BS663 LH VAPOR BARRIER UPPER ATTACH ANGLE LBL8-LBL20 WL167.68: SPLICE ANGLE RO#911402-SWA REPLACEMENT ANGLE RO#911398-SWA;[LOCATED; DRILLED; TRIMMED; DEBURRED; APPLIED CHEMICAL CONVERSION COATING AND PRIMERED REPAIR PARTS @ LH BS663 VAPOR BARRIER UPPER ATTACH ANGLE LBL8-LBL20 WL167.68 IAW SRM 57-10-10-2R-5] INSTALLED REPAIR PARTS @ LH BS663 VAPOR BARRIER UPPER ATTACH ANGLE LBL8-LBL20 WL167.68 IAW SRM 57-10-10-2R-5. BOND CHECK GOOD. BONDING METER ID: ATS1255 S/N: DC003959 DUE: 01/2024;[16] REMOVED EWIS PROTECTION ON FWD AND AFT SIDE OF VAPOR BARRIER BS663 UPPER ATTACH ANGLE LBL8-LBL20 WL 167.68 IAW AMM 20-60-07-913-801.;[17] VERIFIED CORRECTIVE ACTION 14 AND 16;[18] VERIFIED CORRECTIVE ACTION 15;[19] CAP SEALED AND FILLET SEALED EXTERNAL SIDE OF REPAIR @ BS663 VAPOR BARRIER UPPER ATTACH ANGLE *BL8-*BL20 WL167.68 IAW SRM 57-10-10-2R-5.;[20] CAP SEALED AND FILLET SEALED EXTERNAL SIDE OF REPAIR @ BS663 VAPOR BARRIER UPPER ATTACH ANGLE LBL8-LBL20 WL167.68 IAW SRM 57-10-10-2R-5.;[21] APPLIED CIC TO EXTERNAL SIDE OF REPAIR @ BS663 VAPOR BARRIER UPPER ATTACH ANGLE LBL8-LBL20 WL167.68 IAW SRM 57-10-10-2R-5.;[22] VERIFIED CORRECTIVE ACTION 19-21

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