Service difficulty report · Support · Boeing 7377H4

Difficulty date
March 10, 2023
Submitted
April 18, 2023
Operation
Air carrier
Aircraft
N281WN
Make and model
Boeing 7377H4
Aircraft serial
36528
Aircraft time
51,516 hours, 31,045 cycles
Part
Support
Condition
Corroded
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

MULTIPLE AREA OF CORROSION ON FWD CARGO BAY SIDEWALL SUPPORT AT BS 480+19 STRINGER 22L-25L.<[01] VERIFIED SRM 51-10-02 PARAG 9;IS APPLICABLE BY REPLACEMENT.;[02] PRIOR TO REMOVAL;FOUND PART HAS NOT SRM LIMITS AND SO PART IS REPAIRABLE BY REPLACEMENT;IAW SRM 51-10-02;PARAG 9.;[03] REMOVED DAMAGED ANGLE;IAW SRM 51-40-02.;[04] VERIFIED CORRECTIVE ACTIONS #1 AND #2;[05] RECEIVED CHANNEL ITEM: HFAB53-CN-011; LOT: 1523005-1.<BR>LOCATED AND DRILLED ON FWD CARGO BAY SIDEWALL SUPPORT AT BS 480+19 STRINGER 18L-25L; WL198 - WL 156. IAW SRM 51-40-05 DWG# 143A1221.<BR>APPLIED CHEMICAL CONVERSION COATING ON CHANNEL IAW. 51-20-01. OK TO APPLY PRIMER.;[06] VERIFIED CORRECTIVE ACTION #5<BR>OK TO APPLY PRIMER GIVEN;[07] APPLIED TWO LAYERS BMS 10-11; TYPE 1 PRIMER IAW SOPM 20-41-02.<BR>OK TO INSTALL.;[08] VERIFIED CORRECTIVE ACTION 7 OK TO INSTALL GIVEN.;[09] INSTALLED NEW SIDEWALL SUPPORT AT BS 480+19; PER SRM 51-40-02 AND DWG 143A1221.;[10] UPDATED MEASURES TABLE .;[11] VERIFIED CORRECTIVE ACTIONS STEP 9; AND VERIFIED MEASUREMENTS TABLE.

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