Service difficulty report · Attach Angle · Boeing 7377CT

Difficulty date
October 11, 2022
Submitted
November 17, 2022
Operation
Air carrier
Aircraft
N569WN
Make and model
Boeing 7377CT
Aircraft serial
33656
Aircraft time
66,340 hours, 34,395 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

B.S. 663 LOWER COMPOSITE BULKHEAD UPPER ATTACH ANGLE IS CRACKED AT L.B.L. 10; W.L. 164. / [01] APPLICABILITY: SRM 57-10-10-2R-5-REPAIR 5 IS APPLICABLE TO THIS A/C;[02] PERFORMED CUT OUT THE UPPER ATTACH ANGLE LOWER COMPOSITE BULKHEAD AT BS 663 LBL14 IAW SRM 57-10-10-2R-5-REPAIR 5;[08] FABRICATED/ LOCATED AND DRILLED -1 REPLACEMENT ANGLE FROM TOOL ROOM CUSTOMER RO#ATSHFAB-101-353 (JOB#547726) AND -2 SPICE ANGLE FROM TOOL ROOM CUSTOMER RO#ATSHFAB-101-355 (JOB#548789) IAW SRM 57-10-10-2R-5 REPAIR 5 TABLE 201... OK TO INSTALL REPAIR PARTS[10] INSTALLED REPAIR PARTS PER REF IAW SRM 57-10-10-2R-5 REPAIR 5;14] ACCOMPLISHED ELECTRICAL BONDING RESISTANCE CHECK ON REPAIR AREA IAW SRM 57-10-10-2R-5 REPAIR 5; PART 4.M; SWPM 20-20-00 ITEM 12B (4) PART 21.I AND 22.K; MAXIMUM RESISTANCE= 0.5 MILLIOHMS (TEST OK); TOOL USED ID: E12275 S/N:408 DUE DATE:12/2022.;[16] INSTALLED REPAIR BS 663 LOWER COMPOSITE BULKHEAD UPPER ATTACH ANGLE IAW <BR>SRM 57-10-10-2R-5 REPAIR 5-PART 4. (L; N; O AND P);[17] VERIFIED CORRECTIVE ACTION #16<BR>COMPLETED STEP 1;[18] REJECTED ITEM - RO#ATSHFAB-101-353 PART IN CORRECTIVE ACTION 8 REQUIRES A CONFORMITY STATEMENT; SEE STEP 2.;[19] PARTIAL COMPLETED STEP 2: REPLACEMENT ANGLE FABRICATED IAW ATS DWG# ATSHFAB-101-353. REFER TO ATS BUILD RECORD JOB#547726;[20] SPLICE REPAIR ANGLE FABRICATED IAW DWG# ATSHFAB-101-355. REFER TO ATS BUILD RECORD JOB#548789

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