Service difficulty report · Support · Boeing 7377H4

Difficulty date
September 29, 2022
Submitted
November 9, 2022
Operation
Air carrier
Aircraft
N201LV
Make and model
Boeing 7377H4
Aircraft serial
29854
Aircraft time
59,586 hours, 35,374 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 COMPARTMENT L/H FLOOR TO SIDEWALL SUPPORT IS CORRODED FROM STA 440 TO STA 500D; WL 156.5; LBL 22 TO 24. / ;FOUND PART TO BE OUT LIMITS;IAW SRM 53-00-53-1A-2 ALLOWABLE DAMAGE 2 AND SRM 53-30-53-0I-2 IDENTIFICATION 2;TOOL USED ID ATS2678;S/N UNKNOWN;DUE:04/2023.;[02] INSPECTED ACTION 1; VERIFIED MEASUREMENT TABLE;[03] RECEIVED EXTRUSION P/N BAC1496-444 LOT#1490548-1.<BR>LOCATED AND DRILLED EXTRUSION BETWEEN BS 396-BS500D;LBL22 WL156.5;IAW SRM 51-40-05;DWG#143A7501;DWG#143A7500.<BR>MADE SPLICE SIDEPLATE (1EA) FROM BAC149-444 LOT#1490548-1;LOCATED AND DRILLED IN BS 480+10;IAW SRM 53-00-53-2R-6 REPAIR 6.OK TO TREAT AND PRIME.;[04] VERIFIED FABRICATION AND OK TO TREAT AND PRIME GIVEN; CORRECTIVE ACTION 3;[05] APPLIED CHEMICAL CONVERSION COATING AND PRIMER ON SIDEPLATES AND SPLICE SIDEPLATE;IAW SRM 51-20-01;SOPM 20-41-02.OK TO INSTALL BOND NUTPLATES.;[06] INSPECTED ACTION 5; OK TO INSTALL NUT PLATES;[07] INSTALLED BOND NUT PLATES IAW DWG#140N4500 REV. H;THE REMOVAL AND INSTALLATION IS COMPLETED WITH THE CUSTOMER CARD#TTG8Q004F0PU.ALL MAINTENANCE ACTION ARE COMPLETED REQUEST FINAL BUY OFF.;[08] PREVIUS TO CORRECTION ACTION 7 VERIFY SPLICE SIDEPLATE REPAIR IN BS 480+10;PER IAW SRM 53-00-53--2R-6 INSTALLED SPLICE SIDEPLATE REPAIR AT BS 480+10;PER IAW SRM 53-00-53-2R-6.;[11] RII VERIFIED CORRECTIVE ACTION ITEM 10; SPLICE INSTALLATION. THE SIDEWALL SUPPORT WAS NOT REMOVED ON THIS CARD; SEE TTG8Q004F0PU.

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