SDR USAA2008121992273

Service difficulty report · Intercostal · Boeing 7374B7

Difficulty date: December 18, 2008
Submitted: December 19, 2008
Operation: Air carrier
Aircraft: N438US
Make and model: Boeing 7374B7
Aircraft serial: 24560
Aircraft time: 50,701 hours, 34,140 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Intercostal
Part number: 6545834259
Condition: Corroded
Location: Zone 100
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

FILIFORM CORROSION ON INTERCOSTAL BETWEEN BS 328 TO BS 344, LBL 12. REPLACED INTERCOSTAL BETWEEN BS 328 TO BS 344, LBL 12 IAW B737 SRM 51-40-02. UPON FURTHER REVIEW BY ENGINEERING, IT HAS BEEN DETERMINED THAT THIS IS NOT CLASSIFIED AS STRUCTURE REQUIRING CPCP INSPECTION.

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