Service difficulty report · Attach Angle · Boeing 7377H4

Difficulty date
May 11, 2023
Submitted
June 20, 2023
Operation
Air carrier
Aircraft
N429WN
Make and model
Boeing 7377H4
Aircraft serial
33658
Aircraft time
66,602 hours, 39,316 cycles
Part
Attach Angle
Part number
UNKNOWN
Condition
Cracked
Location
Zn 200 Fus Top
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

CABLE INTERCOSTAL ATTACH ANGLE IS CRACKED AT FASTENER BS 688+9; RBL 24; WL 203<[01] REMOVED CABLE INTERCOSTAL ATTACH ANGLE AT FASTENER BS 688+9; RBL 24; WL 203; IAW SRM 51-40-02-0G-0;[02] REQ. SEND MATERIAL BAC1490-2782#7075-0 LOT# 1482151-1; TO OSS FOR HT TR TO T73 IAW DWG 273A9112;[03] RECEIVED NEW ATTACH ANGLE FROM O.S.S HEAT TREATED TO T73 ON CUSTOMER RO# 920254-SWA ; LOCATED AND DRILLED NEW ATTACH ANGLE BS 688+9; RBL 24; WL 203 IAW SRM 51-40-05 AND DWG# 273A9112 ; OK TO TREAT AND PRIME;[04] VERIFIED CORRECTIVE ACTION 3. OK TO TREAT AND PRIME.;[05] APPLIED A CHEMICAL CONVERSION COATING AND PRIMER TO THE NEW ATTACH ANGLE IAW SRM 51-20-01 AND SOPM 20-41-02 ; OK TO INSTALL;[06] VERIFIED CORRECTIVE ACTION 5; OK TO INSTALL.;[07] INSTALLED CABLE INTERCOSTAL ATTACH ANGLE AT FASTENER BS 688+9; RBL 24; WL 203; IAW SRM 51-40-02-0G-0 AND DWG#273A9111;[08] OK TO INSTALL FLOOR PANEL# 241AF ON STEP 1;[09] VERIFIED CORRECTIVE ACTION 7 AND MEASUREMENT TABLE;[10] COMPLETED STEP 1.;[11] OK TO CLOSE PANEL 241AF;[12] CLOSED FLOOR PANEL 241AF; IAW AMM 53-21-00-400-801; USED SCREW TORQUE 25.0 IN PDS.<BR>ID:ATS674<BR>S/N:UNKNOWN<BR>DATE:10/2022<BR>DUE:10/2023.;[13] VERIFIED CORRECTIVE ACTION 12<BR><BR>VERIFIED MEASUREMENT TABLE

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