Service difficulty report · Intercostal · Boeing 7377H4

Difficulty date
September 13, 2022
Submitted
September 27, 2022
Operation
Air carrier
Aircraft
N489WN
Make and model
Boeing 7377H4
Aircraft serial
33855
Aircraft time
57,460 hours, 34,246 cycles
Part
Intercostal
Condition
Cracked
Location
Fuselage
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

INTERCOSTAL AT BL 0; IS CRACKED BS 345 WL 208 / [01] HIDDEN DAMAGE INSPECTION ACCOMPLISHED. NO ADDITIONAL DAMAGE NOTED.;[02] HIDDEN DAMAGE RE-INSPECT REQUIRED UPON REMOVAL OF INTERCOSTAL.;[03] ADDITIONAL DAMAGE FOUND TO T-CHORD AND STRAP UPON REMOVAL OF INTERCOSTAL.;[04] REMOVED INTERCOSTAL BS 344 TO BS 360 BL 0 PER SRM 51-40-02; TRIMMED DAMAGED AREA OF INTERCOSTAL PER SRM 51-10-02; REQUEST NDI TO HFEC TRIMMED EDGE TO VERIFY CRACK FREE CONDITION.;[05] HFEC INSPECTED TRIMMED AREA IAW 737 NDTM PART 6 51-00-00 PROCEDURE 23.<BR>NO CRACKS NOTED.<BR>EQUIP USED:<BR>-NORTEC 600 ID: ATS2353 CAL DUE: 01/23;[06] REQUIRES QC VERIFICATION OF TRIMMED EDGE IN STEP 4;[07] UPDATED CHART;[08] UPDATED CHART;[09] CERTIFY;[10] VERIFIED CORRECTIVE ACTION #4<BR>VERIFIED MEASUREMENTS;[11] OK TO INSTALL INTERCOSTAL FROM BS 344 TO BS360 BL 0.;[12] REJECTED; NO OK TO INSTALL GIVEN; INTERCOSTAL TRIM OUT IN CORRECTIVE ACTION ITEM 4 HAS NOT BEEN REPAIRED YET.;[13] PARTIAL UPDATE FROM STEP 1.;[14] VERIFIED PARTIAL STEP 1; TRIM OUT REPAIRED ON TTG8Q00E9MAJ. OK TO INSTALL INTERCOSTAL.;[15] INSTALLED INTERCOSTAL AT BL 0 BS 344 TO 360 WL 208.1 IAW SRM 51-40-02 AND DWG: 141A5400 ID:0032 REV:- AND EA NO: 22-153-02676 REV:A.;[16] VERIFIED CORRECTIVE ACTION ITEM 15.;[17] CORRECTIVE ACTIO FOR MEASUREMENT #6.;[18] VERIFIED FAULT COMPLETE<BR>VERIFIED CORRECTIVE ACTION ITEM 17 AND MEASUREMENT #6

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