Service difficulty report · Chain Drive · Boeing 7377H4

Difficulty date
March 9, 2022
Submitted
April 11, 2022
Operation
Air carrier
Aircraft
N468WN
Make and model
Boeing 7377H4
Aircraft serial
33858
Aircraft time
58,378 hours, 34,580 cycles
Part
Chain Drive
Condition
Corroded
Location
R1 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 FWD SERVICE DOOR MOP SILL BS 320-336 RBL 58 WL 208. / [01] VERIFIED APPLICABILITY OF SRM 53-10-15-1A-2 ALLOWABLE DAMAGE FWD GALLEY DOOR SURROUND STRUCTURE;[02] REMOVED ALL FASTENERS COMMON TO FSD MOP SILL IAW SRM 51-40-02-0G-0;[03] EVALUATED DAMAGE ON FWD SERVICE DOOR MOPSILL BS320-BS336 RBL58 WL208 16'X1.7' AREA ORIG. MAT. THICKNESS IS 0.080' REMAINING MAT THICKNESS IS 0.060' FOUND TO BE OUT LIMITS I.A.W SRM 53-10-15-1A-2 ALLOWABLE DAMAGE 2 PAR. 4.E(2)(A) FIG 103 DETAIL G. PART TO BE REMOVED AND REPLACED I.A.W SRM 51-10-02-0G-0 PAR. 9.1(1);[04] REMOVED FSD MOPSILL I.A.W.SRM 51-40-02-0G-0;LOCATED AND DRILLED NEW FSD MOPSILL I.A.W SRM 51-40-05-0G-0 AND BOEING DWG 141A8310;[05] VERIFIED CORRECTIVE ACTION #4;[06] VERIFIED CORRECTIVE ACTION 3.;[07] OK TO INSTALL.;[08] VERIFIED CORRECTIVE ACTION 1. <BR><BR>OK TO INSTALL NEW PART.;[09] UPDATED TABLE MEASUREMENT;[10] UPDATED TABLE MEASUREMENT;[11] INSTALLED NEW FSD MOP SILL PER SRM 51-40-02-0G-0; AND DWG# 141A8310 SHT. 25 REV B;[12] VERIFIED CORRECTIVE ACTION 11.

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