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+28 RBL1 WL206.<[01] REMOVED CRACK DAMAGED ATTACH ANGLE AT BS 663+28 RBL 1 WL 206 IAW SRM 51-40-02-0G-0 NO SRM DAMAGE LIMITS GIVEN PART REPAIRABLE BY REPLACEMENT IAW SRM 51-10-02-0G-0 SEC .9 REMOVED ATTACH ANGLE AT BS 663+28 RBL 1 WL 206 TO WL 203 FORWARD SIDE FOR ACCESS IAW SRM 51-40-02-0G-0;[02] VERIFIED CORRECTIVE ACTION #1;[03] FABRICATED NEW ATTACH ANGLE FROM 2024T3 0.050' LOT # 1498627-1 APPLIED CHEMICAL CONVERSION COAT AND PRIMED ALL I.A.W SMR 51-40-05-0G-0;SRM 51-30-01;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+28 RBL1 WL 206 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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