SDR F3LA200200300

Service difficulty report · Intercostal · Boeing 737301

Difficulty date: October 2, 2002
Submitted: October 7, 2002
Operation: Air carrier
Aircraft: N578US
Make and model: Boeing 737301
Aircraft serial: 23257
Aircraft time: 55,067 hours, 31,976 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

DURING C-4 CHECK, INSPECTION REPORTED CORROSION ON INTERCOSTAL BETWEEN BS 294.5 AND BS 312, RBL 1 AND CRACKED ON AFT END. REMOVED DAMAGED INTERCOSTAL PER SRM 51-40-02. FABRICATED AND INSTALLED REPLACEMENT INTERCOSTAL PER SRM 51-40-06, SRM 51-40-02 AND SOPM 20-41-01.