Service difficulty report · Angle · Boeing 7377H4

Difficulty date
March 15, 2022
Submitted
April 20, 2022
Operation
Air carrier
Aircraft
N472WN
Make and model
Boeing 7377H4
Aircraft serial
33831
Aircraft time
58,559 hours, 34,804 cycles
Part
Angle
Condition
Cracked
Location
Center Wing
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. 8; W.L. 163. / [01] VERIFIED APPLICABILITY OF SRM 57-10-10-2R-5 (REPAIR 5 - WING CENTER SECTION REAR SPAR VAPOR BARRIER ATTACH ANGLE REPAIR - PERMANENT);07] FABRICATED; LOCATED AND DRILLED REPLACEMENT AND SPLICE REPAIR ANGLES IAW SRM 57-10-10-2R-5 REPAIR 5 PART 4.H-K FIG. 202;[08] APPLIED CHEMICAL CONVERSION COATING AND PRIME ON REPLACEMENT AND SPLICE ANGLE IAW SRM 57-10-10-2R-5 REPAIR 5 PART 4.F;G.;[09] INSPECTED & VERIFIED CORRECTIVE ACTION ITEMS 6; 7; 8.<BR>***STEP 1 NEEDS TO BE ACCOMPLISHED BEFORE INSTALLATION OF REPAIR PARTS***;[10] ACCOMPLISHED HFEC INSPECTION OF HOLES IAW NDTM D6-37239 PART 6 51-00-00 PROC 23; NO CRACKS FOUND. TOOL I.D. IS000450 500D; ATS1411 MINIMITE;[11] CORRECTION TO ACTION 10; SHOULD BE PART 6 51-00-00 PROC 16;[12] UPDATED STEP 1.<BR>APPLIED CHEMICAL CONVERSION COATING AND PRIME ON REPAIR AREA IAW SRM 57-10-10-2R-5 REPAIR 5 PART 4.F;G.;[13] OK TO INSTALL REPAIR PARTS.;[14] VERIFIED ACCOMPLISHMENT OF STEP 1 & CORRECTIVE ACTION ITEMS 12; 13. OK TO INSTALL REPAIR PARTS GIVEN.;[15] INSTALLED REPAIR PARTS PER REF SRM 57-10-10-2R-5 REPAIR 5 AND DWG 111A1000 SHEET 141 REV-.;[16] VERIFIED CORRECTIVE ACTION 15. <BR><BR>CAP SEAL OF FASTENERS STILL REQUIRED;[17] APPLIED A FILLET SEAL AROUND THE EDGES OF THE REPAIR AND APPLIED CIC TO THE REWORKED AREA AND CAP SEAL FUEL TANK FASTENERS PER SRM 51-80-01 AND PER SRM 57-10-10-2R-5 REPAIR 5 STEPS 4L(8); 4 N & O;[18] VERIFIED ITEM 17 CORRECTIVE ACTIONS.

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