Service difficulty report · Intercostal · Boeing 7378H4

Difficulty date
May 24, 2022
Submitted
June 10, 2022
Operation
Air carrier
Aircraft
N8630B
Make and model
Boeing 7378H4
Aircraft serial
42521
Aircraft time
27,694 hours, 12,732 cycles
Part
Intercostal
Condition
Cracked
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 FLOOR SUPPORT AT BS344+11 LBL12 WL 208 / [01] INTERCOSTIAL AT BS 344+11 LBL12 WL 208 FOUND TO BE OUT OF LIMITS NO CRACKS ALLOWED PER SRM 53-00-04-1A-1 STEP 4C. REMOVED INTERCOSTIAL BS 344-360 LBL 12 WL 208 PER SRM 51-40-02-0G-0;[02] VERIFIED CORRECTIVE ACTION #1; ADDED MEASUREMENT FIELD;[03] LOCATED AND DRILLED NEW INTERCOSTAL BS 344-360; LBL 12; WL 208 PER SRM 51-40-05-0G-0 AND BOEING DWG 141A5410.;[04] LOCATED AND DRILLED NEW INTERCOSTAL BS 344-360; LBL 12; WL 208 PER SRM 51-40-05-0G-0 AND BOEING DWG 141A5410. OK TO INSTALL NEW INTERCOSTAL BS 344-360; LBL 12; WL 208 REQUIRED.;[05] INSPECTED AND VERIFIED CORRECTIVE ACTIONS 3 AND 4. OKAY TO INSTALL INTERCOSTAL.;[06] PARTIAL UPDATE STEP 1. OK TO REINSTALL INTERCOSTAL BS 344-360; RBL 12; WL 208.;[07] PARTIAL ON STEP 1 OKAY TO INSTALL INTERCOSTAL;[08] PARTIAL UPDATE OF STEP 1 AND REINSTALLED INTERCOSTAL BS 344-360; LBL 12; WL 208 PER SRM 51-20-01-0G-0 AND BOEING DWG 141A5400.;[09] UPDATED PARTS USED INFORMATION.;[10] INSPECTED ACTION 8;9 AND STEP 1;[11] INSPECTION COMPLETE

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