Service difficulty report · Support · Boeing 7378H4

Difficulty date
October 10, 2022
Submitted
October 31, 2022
Operation
Air carrier
Aircraft
N8507C
Make and model
Boeing 7378H4
Aircraft serial
41531
Aircraft time
20,008 hours, 9,579 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

FWD CARGO BAY L/H FLOOR TO SIDEWALL HAS CORROSION AROUND NUT PLATE HOLE BS500E+11 LBL24 WL156 / [01] UPDATED MEASUREMENT TABLE FOR PICTURE OF CORROSION ATTACHED;[04] REMOVED DAMAGED SECTION OF FLOOR TO SIDEWALL SUPPORT AT BS 480+8' TO 500I LBL24 WL 156 IAW SRM 53-00-53-2R-5 REP.5 AND EA M-22-153-01550.;[05] FABRICATED; LOCATED; DRILLED AND APPLIED CHEMICAL CONVERSION COATING AND PRIMER ON REPAIR PARTS AND REPAIR AREA AT NEW SECTION OF FLOOR TO SIDEWALL SUPPORT AT BS 480+8' TO 500I LBL24 WL 156 IAW SRM 53-00-53-2R-5 REP.5 AND EA M-22-153-01550. REPAIR SPLICE 2EA LOCATED AT BS 480+8' AND 500D+10'; MATERIAL USED FOR REPAIR PARTS BAC1496-444 7075T62 LOT#1501239-1.;[06] OK TO INSTALL.;[07] VERIFIED CORRECTIVE ACTION 5 AND 6.<BR>OK TO INSTALL;[08] INSTALLED REPAIR PARTS OF FLOOR TO SIDEWALL SUPPORT AT BS 480+8' TO 500I LBL24 WL 156 IAW SRM 53-00-53-2R-5 REP.5 AND EA M-22-153-01550 AND DWG 143A7500. REPAIR SPLICE 2EA LOCATED AT BS 480+8' AND 500D+10'.;[09] THE DAMAGE WAS REPAIRED PER SRM 53-00-53-2R-5 (REPAIR 5) AND EA M-22-153-01550.;[10] VERIFIED CORRECTIVE ACTION STEPS 8 AND 9;[11] VERIFIED MEASUREMENT TABLE AND TASK CARD COMPLETE.

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