Service difficulty report · Channel · Boeing 7377H4

Difficulty date
July 6, 2023
Submitted
August 15, 2023
Operation
Air carrier
Aircraft
N229WN
Make and model
Boeing 7377H4
Aircraft serial
32498
Aircraft time
58,665 hours, 35,024 cycles
Part
Channel
Part number
UNKNOWN
Condition
Corroded
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

CORROSION ON FWD SERVICE DOOR MOP SILL BS 294-334 RBL 58 WL 208.<[01] VERIFIED APPLICABILITY OF SRM 53-10-15-1A-1 ALLOWABLE DAMAGE 2;[02] BLENDED AND REMOVED CORROSION DAMAGE FROM FWD SERVICE DOOR MOP SILL FROM BS294 TO BS334 RBL 58 WL 208 REMOVED .027 FROM ORIGINAL .080 OUT OF LIMITS IAW SRM 53-10-15-1A-1 STEPS 2; 3 AND 4 FIG 103 (L) USING CALIPER PER2242 CAL DUE 01/2024 AND DIAL DEPTH GAGE ATS ID ATS2678 CAL DUE 05/2024;[03] UPDATED MEASUREMENT TABLE AND COMPLETED STEP 1;[04] STEP 2 COMPLETE;[05] CORRECTED STEP 1;[06] REMOVED ON FWD SERVICE DOOR MOP SILL BS 294-334 RBL 58 WL 208 I.A.W SRM 51-40-02-0G-0;[07] COMPLETED STEP 4 PARTIAL UPDATE STEPS 5 AND 6;[08] REMOVED FWD SERVICE DOOR MOP SILL BETWEEN BS259.5 TO BS 360 WL208 FOUND OUT OF LIMITS AND INSTALLED NEW FWD SERVICE DOOR MOP SILL BETWEEN BS259.5 TO BS 360 WL208 IAW SRM 51-40-02-0G-0 AND DWG 141A8310. VERIFIED ALL STEPS COMPLETED.;[09] VERIFIED CORRECTIVE ACTION STEP 8.;[10] JOB TASK IS ACCOMPLISHED.;[11] VERIFIED MEASUREMENTS.

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