Service difficulty report · Channel · Boeing 7377Q8

Difficulty date
May 13, 2022
Submitted
June 16, 2022
Operation
Air carrier
Aircraft
N7876A
Make and model
Boeing 7377Q8
Aircraft serial
29355
Aircraft time
50,771 hours, 27,451 cycles
Part
Channel
Condition
Corroded
Location
Fuselage
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 MOP SILL AT FWD PASSENGER CABIN BS298 - BS328 RBL55. / [01] VERIFIED APPLICABILITY TO SRM 53-10-15-1A=2<BR>REMOVED CORROSION ON MOP SILL L=5.0 ; W=2.0 ; D=.025 MATERIAL ORIGINAL THICKNESS .080 MATERIAL REMAINING .055' AT FWD SERVICE DOOR RBL 55 BS 328 -5 PER SRM 53-10-15-1A-2;[02] REMOVED DAMAGED FSD MOP SILL IAW SRM 51-40-02 ; LOCATED AND DRILLED NEW FSD MOP SILL IAW SRM 51-40-05 AND DWG # 141A8112 ; OK TO INSTALL;[03] FSD MOP SILL FOUND TO BE OUT OF LIMITS DUE TO MORE THAN 10% OF MATERIAL LOSS IAW SRM 53-10-15-1A-2 . REMOVED DAMAGED FSD MOP SILL IAW SRM 51-40-02 ; LOCATED AND DRILLED NEW FSD MOP SILL IAW SRM 51-40-05 AND DWG # 141A8112 ; OK TO INSTALL;[04] ADDED OUT OF LIMITS STATEMENT;[05] INSPECTED & VERIFIED CORRECTIVE ACTION ITEMS 1-4. *** NO OK TO INSTALL GIVEN AT THIS TIME. ***;[06] VERIFIED OK TO INSTALL FSD MOP SILL.;[07] INSTALLED FSD MOP SILL WITH SEALANT USING PERMANENT AND TEMPORARY FASTENER AND CONFIRMED 100% SEALANT QUIZZED OUT IAW SRM 51-40-02-0G-0;[08] VERIFIED CORRECTIVE ACTION #7. SEALANT SQUEEZE OUT.;[09] INSTALLED FSD MOP SILL IAW SRM 51-40-02-0G-0 AND DWG#141A8310 REV-B;[10] VERIFIED CORRECTIVE ACTION #9.;[11] VERIFIED MEASUREMENT FIELD.

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