SDR USAA960086

Service difficulty report · Intercostal · Boeing 737401

Difficulty date: January 17, 1996
Submitted: March 26, 2000
Operation: Air carrier
Aircraft: N423US
Make and model: Boeing 737401
Aircraft serial: 23990
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Intercostal
Part number: 6545834610
Condition: Corrosion
Location: Bs 336
Part time: 19,812 hours
Stage of operation: IN
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

INT - DURING Q-5 CHECK VISUAL INSPECTION, FOUND 2 INCH BY 2 INCH AREA SURFACE CORROSION AT INTERCOSTAL, BS 336, RBL 59, WL 208. REPLACED CORRODED INTERCOSTAL WITH NEW PART. REPAIRED PER SRM 51-10-2. CORROSION TASK NR C53-107-02, CORROSION LEVEL 2. (M)