Service difficulty report · Attach Angle · Boeing 7378H4

Difficulty date
October 11, 2022
Submitted
November 3, 2022
Operation
Air carrier
Aircraft
N8509U
Make and model
Boeing 7378H4
Aircraft serial
36925
Aircraft time
20,183 hours, 9,620 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

R/H BS663 UPPER ATTACH ANGLE IS CRACKED ON VAPOR BARRIER RBL8 WL167.68 / REMOVED DAMAGED SECTION OF RH BS663 UPPER ATTACH ANGLE RBL8-RBL20 WL167.68 IAW SRM 57-10-10-2R-5.;[04] PERFORM AN OPEN HOLE HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTION FOR ALL INITIAL FASTENER HOLES IN THE REPAIR AREA TO MAKE SURE THERE IS NO DAMAGE.;[05] PERFORM A DETAILED INSPECTION OF THE REPAIR AREA AND THE UNDERLYING STRUCTURE TO MAKE SURE THAT THERE IS NO DAMAGE WITHIN THE REPAIR AREA.;[06] RECEIVED REPAIR PARTS SPLICE ANGLE RO#887174-SWA-3 AND REPLACEMENT ANGLE RO#887174-SWA-1.;[07] VERIFIED CORRECIVE ACTION 1;2;3;5 AND 6;[08] HFEC INSPECTED OPEN HOLES IAW 737 NDTM PART 6 51-00-00 PROCEDURE 16. <BR>NO CRACKS NOTED. <BR>EQUIP USED: <BR>-NORTEC 600 ID: ATS2353 CAL DUE: 01/23 <BR>-MINIMITE ID: ATS1411 CAL DUE: 07/23;[09] LOCATED; DRILLED; TRIMMED; DEBURRED; APPLIED CHEMICAL CONVERSION COATING AND PRIMERED REPAIR PARTS IAW SRM 57-10-10-2R-5. 0K TO INSTALL.;[10] VERIFIED CORRECTIVE ACTION 9. OK TO INSTALL.;[11] INSTALLED REPAIR PARTS FOR RH BS663 UPPER ATTACH ANGLE RBL8-RBL20 WL167.68 IAW SRM 57-10-10-2R-5.

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