Service difficulty report · Intercostal · Boeing 7378H4

Difficulty date
June 22, 2023
Submitted
July 11, 2023
Operation
Air carrier
Aircraft
N8543Z
Make and model
Boeing 7378H4
Aircraft serial
63587
Aircraft time
19,500 hours, 9,726 cycles
Part
Intercostal
Part number
UNKNOWN
Condition
Cracked
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

CRACKED INTERCOSTAL UPPER FLANGE BS 380-400 LBL 14 WL 208.<[01] NO ENTRIES FOUND ON SRM FOR PASSENGER CABIN FLOOR SUPPORT BS 380-400; LBL 14; WL 208 PART TO BE REMOVED AND REPLACED PER SRM 51-10-02-0G-0 PAR 9.C;[02] REMOVED PASSENGER CABIN FLOOR SUPPORT BS 380-400; LBL 14; WL 208 I.A.W SRM 51-40-02-0G-0;[03] VERIFIED CORRECTION ACTION ITEM 2; AND MEASUREMENT TABLE.;[04] RECEIVED NEW INTERCOSTAL UPPER FLANGE FROM OSS FAB;HT;DYE PEN ON COSTUMER RO #926330-SWA;[05] LOCATED;DRILLED;APPLIED CHEMICAL CONVERSION COAT AND PRIMED INTERCOSTAL UPPER ATTACH ANGLE STA 380-400; LBL 14; WL 208; PER SRM 51-40-05-0G-0; SRM 53-30-51-1A-1 AND PER DWG 143A5400 OK TO INSTALL;[06] VERIFIED CORRECTIVE ACTIONS 4 AND 5<BR>OK TO INSTALL INTERCOSTAL BS 380-400 LBL 14 WL 208 GIVEN;[07] INSTALLED NEW INTERCOSTAL UPPER ATTACH ANGLE STA 380-400; LBL 14; WL 208; PER SRM 51-40-02-0G-0 AND BOEING DWG 143A5400 COMPLETED TASK;[08] VERIFIED CORRECTIVE ACTIONS 7 AND MEASUREMENT TABLE.

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