Service difficulty report · Channel · Boeing 7377H4

Difficulty date
March 17, 2022
Submitted
April 20, 2022
Operation
Air carrier
Aircraft
N472WN
Make and model
Boeing 7377H4
Aircraft serial
33831
Aircraft time
58,559 hours, 34,804 cycles
Part
Channel
Condition
Corroded
Location
R2 Door
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

CORROSION ON FORWARD SERVICE DOOR MOP SILL AT B.S. 294.5 - B.S. 328; R.B.L. 60; W.L. 208.1. / [01] REMOVED CORROSION FROM FSD MOP SILL IN AREA OF 6' X 2' ORIGINAL MATERIAL THICKNESS 80' REMAINING MATERIAL THICKNESS 0.040' FOUND TO BE OUT OF LIMIT IAW SRM 53-10-15-1A-2 DET.4E (2A) FIG 103-D;[02] INSPECTED & VERIFIED CORRECTIVE ACTION ITEM 1.;[03] REMOVED FWD SERVICE DOOR MOP SILL IAW SRM 51-40-02-0G-0;[04] RECEIVED NEW PART FWD SERVICE DOOR MOP SILL AT ITEM :654A0004-134; LOT#1484650-1;PO#859964/1.;[05] LOCATED AND DRILLED NEW PARTE ON FWD SERVICE DOOR MOP SILL AT BS 277 TO BS 360 RBL 60 WL 208.1. IAW SRM 51-40-05 AND DWG 141A8310 REV:B.;[06] VERIFIED CORRECTIVE ACTIONS #4 AND #5;[07] OK TO INSTALL.;[08] OK TO INSTALL GIVEN;[09] OK TO INSTALL FSD MOP SILL;[10] VERIFIED CORRECTIVE ACTION #9; OK TO INSTALL;[11] INSTALLED FWD SERVICE DOOR MOP SILL AT BS 277 TO BS 360 RBL 60 WL 208.1 IAW SRM 51-40-02-0G-0 AND DRAWING#141A8310.;[12] VERIFIED FASTENER INSTALLATION;[13] VERIFIED TASK COMPLETE

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