SDR SWAA2023012682278

Service difficulty report · Intercostal · Boeing 7377BD

Difficulty date: December 15, 2022
Submitted: January 26, 2023
Operation: Air carrier
Aircraft: N7713A
Make and model: Boeing 7377BD
Aircraft serial: 33919
Aircraft time: 57,380 hours, 30,141 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Intercostal
Condition: Cracked
Location: Bs 380
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 AT FWD CABIN BS380+14 BL0. PERFORMED OPEN HOLE INSPECTION IAW NDI PART 6, 51-00-00, PROCEDURE 16. CRACK INDICATION AT 3:00 POSITION. PERFORMED HFEC SURFACE SCAN IAW NDI, PART 6, 51-00-00 PROCEDURE 23. CRACK INDICATIONS .7'X.05' AND .4'X.05'. LOCATED AND DRILLED NEW INTERCOSTAL AT BS 380 TO BS 400 BL 0; IAW 737-700 SRM 51-40-05-0G-0 DWG 143A5410. INSTALLED NEW UPPER ANGLE ON INTERCOSTAL BS 380 TO BS 400 BL 0 IAW SRM 51-40-02-0G-0, & DWG143A5400.

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