Service difficulty report · Attach Angle · Boeing 7377H4

Difficulty date
April 4, 2023
Submitted
April 28, 2023
Operation
Air carrier
Aircraft
N412WN
Make and model
Boeing 7377H4
Aircraft serial
29818
Aircraft time
71,376 hours, 42,351 cycles
Part
Attach Angle
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

CRACKED ATTACH ANGLE AT MID CABIN BS663+29 RBL23 WL203.<[01] REMOVED CRACK DAMAGED ATTACH ANGLE AT MID CABIN BS 663+29 RBL 23 WL 203 IAW SRM 51-40-02-0G-0 NO SRM DAMAGE LIMITS GIVEN PART REPARABLE BY REPLACEMENT IAW SRM 51-10-02-0G-0 SEC 9.;[02] VERIFIED CORRECTIVE ACTION #1;[03] FABRICATED NEW ATTACH ANGLE FROM BAC1490-2782 7075T0 0.050 HT TO T73 ON P.O# 857530-SWA APPLIED CHEMICAL CONVERSION COAT AND PRIMED ALL I.A.W SMR 51-40-05-0G-0;BOEING DWG 273A9112;[04] VERIFIED CORRECTIVE ACTION STEP 3.;[05] OK TO INSTALL;[06] VERIFIED CORRECTIVE ACTION 5.;[07] INSTALLED NEW ATTACH ANGLE BS 663+29 RBL23 WL 203 I.A.W SRM 51-40-02-0G-0;BOEING DWG 273A9112;273A9110; 273A9111.COMPLETED TASK;[08] VERIFIED MEASUREMENT TABLE.;[09] VERIFIED CORRECTIVE ACTION 7.

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