Service difficulty report · Intercostal · Boeing 7378H4

Difficulty date
March 17, 2023
Submitted
April 13, 2023
Operation
Air carrier
Aircraft
N8527Q
Make and model
Boeing 7378H4
Aircraft serial
36946
Aircraft time
20,252 hours, 9,861 cycles
Part
Intercostal
Condition
Cracked
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

CRACKED INTERCOSTAL UPPER ATTACH ANGLE STA 380-400; LBL 13; WL 208.<[01] UPDATE MEASUREMENT TABLE;[02] REMOVED INTERCOSTAL UPPER ATTACH ANGLE STA 380-400; LBL 13; WL 208. IAW SRM 51-40-02-0G-0;[03] SRM 53-30-51-1A-1 IS APPLICABLE FOR ALLOWABLE DAMAGE;[04] VERIFIED CORRECTIVE ACTION 2 AND 3;[05] CRACK INTERCOSTAL UPPER ATTACH ANGLE WAS FOUND TO BE OUT LIMITS PER SRM 53-30-51-1A-1;[06] LOCATED DRILLED AND INSTALLED NEW ANGLE PER SRM 51-40-05-0G-0 AND SRM 51-40-02-0G-0;[07] CORRECTION TO STEP 6 LOCATED DRILLED NEW ANGLE PER SRM 51-40-05-0G-0 OK TO INSTALL.;[08] VERIFIED CORRECTIVE ACTION 6 AND 7.<BR>OK TO INSTALL;[09] INSTALLED NEW INTERCOSTAL UPPER ATTACH ANGLE STA 380-400; LBL 13; WL 208; PER SRM 51-40-02-0G-0; SRM 51-40-05-0G-0; SRM 53-30-51-1A-1 AND PER DWG 143A5400 REV :-.;[10] CORRECTIVE ACTION 9 SHOULD READ <BR>INSTALLED NEW INTERCOSTAL UPPER ATTACH ANGLE STA 380-400; LBL 13; WL 208; PER SRM 51-40-02-0G-0 AND BOEING DWG 143A5400;[11] VERIFIED CORRECTIVE ACTION STEPS 9 AND 10.;[12] VERIFIED MEASUREMENT TABLE AND TASK CARD COMPLETE.

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