SDR SWAA2021102831873

Service difficulty report · Intercostal · Boeing 7377H4

Difficulty date: October 19, 2021
Submitted: October 28, 2021
Operation: Air carrier
Aircraft: N901WN
Make and model: Boeing 7377H4
Aircraft serial: 32545
Aircraft time: 46,086 hours, 26,832 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
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

CRACK NOTED IN RADIUS OF LATERAL INTERCOSTAL AT BS 270; NEAR BL 0; .5' L; BELOW FLOOR LINE. BLENDED FWD SIDE OF LATERAL INTERCOSTAL AT BS 270 CRACK LOCATION IAW SRM 51-10-02-0G-0. UT MEASURED IAW B737 NDT P4 51-00-00 P2. FOUND .050' ORIG; .029' REM; .021' LOSS. HFEC IAW NDT P6 51-00-00 P23. CRACK NOTED. UT IAW NDT PART 4; 51-00-00 PR0C 2. REMOVED DAMAGE FROM BS 270. FABRICATED REPAIR PARTS AND INSTALLED IAW EA 21-153-03144.

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