SDR SWAA2020042037773

Service difficulty report · Intercostal · Boeing 7377BX

Difficulty date: April 8, 2020
Submitted: April 20, 2020
Operation: Air carrier
Aircraft: N553WN
Make and model: Boeing 7377BX
Aircraft serial: 30745
Aircraft time: 59,303 hours, 33,667 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Intercostal
Condition: Corroded
Location: Fuselage
Stage of operation: IN
How discovered: V
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

***CORROSION*** INTERCOSTAL WEB COMMON TO RH KEEL BEAM; BS 768; RBL 6; WL 150 HAS CORROSION. / REMOVED AND REPLACED ACB INTERCOSTAL WEB COMMON TO R/H KEEL BEAM; BS767-787; RBL 6; WL 150 IAW SRM 51-40-02; SRM 51-40-05; DWG #146A8130; DWG # 146A8131; DWG # 146A8132.

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