Service difficulty report · Attach Angle · Boeing 7377H4

Difficulty date
November 10, 2022
Submitted
November 17, 2022
Operation
Air carrier
Aircraft
N221WN
Make and model
Boeing 7377H4
Aircraft serial
34259
Aircraft time
58,107 hours, 34,310 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

CRACK FOUND ON STA. 663 VERTICAL LEG OF ATTACH ANGLE COMMON TO DRAIN VALVE LOWER I/B NUTPLATE HOLE AT RBL 32 WL 193 / [01] VERIFIED CRACK FROM DRAIN CUTOUT TO INBD NUTPLATE HOLE ON LOWER ATTACH ANGLE VERTICAL LEG IAW B737 NDT PART 6 51-00-00 PROCEDURE 23. TOOL# 40083 DUE 14SEP23;[02] CUT AND REMOVED DAMAGED SECTION OF ANGLE IAW SRM 57-10-10-2R-6 SECTION 4.C. VERIFIED MATERIAL 7075-T6 .100' ATAG A39363 IAW SRM 57-10-10-2R-6 TABLE 201.;[03] VERIFIED STEP 2;[04] HFEC DAMAGE CUTOUT AND OPEN HOLES IN REPAIR AREA IAW B737 NDT PART 6 51-00-00 PROCEDURES 23 AND 16. NO DEFECTS NOTED. TOOL# 44291 DUE 03NOV23;[05] ACCOMPLISHED INSURANCE CUT; FABRICATED; LOCATED AND DRILLED REPAIR FILLER IAW SRM 57-10-10-2R-6 SECTION 4. D; AND F - J.;[06] VERIFIED STEP 5;[07] APPLIED CHEMICAL CONVERSION AND PRIMER IAW SRM 57-10-10-2R-6 SECTION 4. K AND L.;[08] VERIFIED STEP 7 C/W;[09] OK TO INSTALL REPAIR PARTS;[10] INSTALLED REPAIR PART IAW SRM 57-10-10-2R-6;[11] VERIFIED ITEM 10.;[12] VERIFIED ACTION 10;[13] APPLIED CIC TO REPAIRED AREA IAW SRM 57-10-10-2R-6;[14] VERIFIED JOB IS COMPLETE;[15] VERIFIED ITEMS 12-14.;[16] UPDATED MEASUREMENTS;[17] VERIFIED ITEM 16.<BR>AUDITED

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