SDR SWAA2021122250988

Service difficulty report · Intercostal · Boeing 7377H4

Difficulty date: December 7, 2021
Submitted: December 22, 2021
Operation: Air carrier
Aircraft: N910WN
Make and model: Boeing 7377H4
Aircraft serial: 36618
Aircraft time: 45,600 hours, 27,244 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Intercostal
Condition: Corroded
Location: Fuselage
Stage of operation: NR
How discovered: 9
Nature of condition: O
Precautionary procedure: O

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

CORROSION ON BS 259 - 270 SUPPORT INTERCOSTAL LBL 3 - RBL 3, WL 207.54. REMOVED CORROSION AND FOUND OUT OF LIMITS IAW SRM 53-10-51-1A-1 AND SRM 51-10-02-0G-0. REMOVED DAMAGED SUPPORT INTERCOSTAL IAW SRM 51-40-02-0G-0. LOCATED AND DRILLED A NEW SUPPORT INTERCOSTAL IAW DWG 141A5210;141A0631 AND SRM 51-40-02-0G-0. INSTALLED THE NEW SUPPORT INTERCOSTAL IAW DWG 141A5210, DWG 141A0631, EA M-21-153-00277 AND SRM 51-40-02-0G-0.

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