Service difficulty report · Attach Angle · Boeing 7377BD

Difficulty date
April 20, 2022
Submitted
May 11, 2022
Operation
Air carrier
Aircraft
N7736A
Make and model
Boeing 7377BD
Aircraft serial
35109
Aircraft time
50,096 hours, 25,534 cycles
Part
Attach Angle
Condition
Cracked
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

B.S 663 VAPOR BARRIER UPPER ATTACH ANGLE IS CRACKED AT R.B.L. 10; W.L. 163. / [01] VERIFIED THE APPLICABILITY OF SRM 57-10-10-2R-5 REPAIR 5;[02] CUT AND REMOVED THE BS 663 VAPOR BARRIER UPPER ATTACH ANGLE AT RBL 16 TO RBL 8 WL 163 IAW SRM 57-10-10-2R-5 REPAIR 5;[03] VERIFIED CORRECTIVE ACTION STEPS 1 AND 2.;[04] HFEC INSPECTED OPEN HOLE(S) IAW 737 NDTM PART 6 51-00-00 PROCEDURE 16; NO CRACKS NOTED DURING TIME OF INSPECTION. <BR>EQUIP USED: NORTEC 600 ID: ATS1465 EQUIP USED: MINIMITE ID: ATS240;[05] PERFORMED A DETAILED INSPECTION OF THE REPAIR AREA AND THE UNDERLYING STRUCTURE;[06] VERIFIED CORRECTIVE ACTION STEP 5. NO DEFECTS NOTED.;[07] FABRICATED -1 REPLACEMENT ANGLE FROM PREFABRICATED ANGLE PART # ATSHFAB-101-354 AND FABRICATED -2 SPLICE ANGLE FROM PREFABRICATED SPLICE ANGLE P/N ATSHFAB-101-355 LOCATED AND DRILLED ALL REPAIR PARTS IAW SRM 57-10-10-2R-5 REPAIR 5 OK TO INSTALL;[08] VERIFIED CORRECTIVE ACTION 7;[09] INSTALLED REPAIR PARTS IAW SRM 57-10-10-2R-5 PART 4.L(1-7) FIG. 202.;[10] VERIFIED CORRECTIVE ACTION #9.;[11] ACCOMPLISHED CAP SEAL FUEL TANK FASTENERS AND FILLET SEAL AROUND THE EDGES OF THE REPAIR IAW SRM 57-10-10-2R-5 PART 4.L(8); 4.N. FIG. 202; APPLIED CORROSION INHIBITING COMPOUND TO REPAIR AREA IAW SRM 57-10-10-2R-5 PART 4.O. FIG. 202.;[12] VERIFIED CORRECTIVE ACTION #11.

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