Service difficulty report · Attach Angle · Boeing 7378H4

Difficulty date
April 28, 2025
Submitted
May 19, 2025
Operation
Air carrier
Aircraft
N8691A
Make and model
Boeing 7378H4
Aircraft serial
36945
Aircraft time
29,396 hours, 14,640 cycles
Part
Attach Angle
Condition
Cracked
Location
Zone 100
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

BS 663 VAPOR BARRIER ATTACH ANGLE CRACKED AT APPROXIMATELY RBL 9.<[01] REMOVED FASTENERS IN FUEL TANK ONLY OF 663 VAPOR BARRIER ANGLE ON R/H SIDE PER SRM 51-40-02;[02] CUT AND REMOVED VAPOR BARRIER ATTACH ANGLE ON STA. 663 FROM APPROXIMATELY RBL 6? TO RBL 17? PER SRM 57-10-10-2R-5.;[03] VERIFIED WORK SIGNED IN CA#1 AND #2 ....... RII;[04] C/W HFEC OF OPEN HOLES IN REPAIR AREA FOR SRM 57-10-10-2R-5 PER NDT PART 6 51-00-00 PROD. 16 ---- NO DEFECTS NOTED;[05] C/W DVI OF REPAIR AREA FOR REPAIR SRM 57-10-10-2R-5 ---- NO DEFECTS NOTED;[06] TRIMMED AND LOCATED REPLACEMENT ANGLE FOR 663 VAPOR BARRIER<BR>RH SIDE PER SRM 57-10-10-2R-5. PART NUMBER 111A1322U10;[07] VERIFIED WORK SIGNED IN CA#6 RII..........TRIMMED AND LOCATED REPLACEMENT ANGLE FOR 663 VAPOR BARRIER<BR>RH SIDE PER SRM 57-10-10-2R-5. PART NUMBER 111A1322U10;[08] RII - FORMED SPLICE ANGLE FROM 0.071 IN. 2024-T3 CLAD PER SRM 57-10-10-2R-5.[17] CAP SEALED REPAIR FASTENERS IN FUEL TANK PER SRM 51-10-10-2R-5.;[18] REPAIRED BS 663 VAPOR BARRIER ATTACH ANGLE BETWEEN RBL 6 AND RBL 17 PER SRM 57-10-10-2R-5;[19] VERIFIED CORRECTIVE ACTION STEPS 17 AND 18;[20] VERIFIED REPAIR IS COMPLETE PER SRM 57-10-10-2R-5 AND LEAK CHECKED GOOD.

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