SDR NACA2015105010028

Service difficulty report · Floor Support · Boeing 737232

Difficulty date: May 1, 2015
Submitted: May 11, 2015
Operation: Air carrier
Aircraft: N322DL
Make and model: Boeing 737232
Aircraft serial: 23094
Aircraft time: 73,465 hours, 57,254 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Floor Support
Condition: Corroded
Location: Bs 540-727b
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

UPPER FUSELAGE FLOOR HAS CORROSION ON FLOORBEAM FLANGE STRUCTURE AT BS 727B TO BS 540, RBL45. OUT OF LIMITS CORROSION WAS NOTED ON THE UPPER CAP OF THE LONGITUDINAL FLOORBEAM LOCATED AT RBL45. IT WAS NOTED THAT THERE WAS PREVIOUS BLEND ACTIVITY ON THIS CAP. THE PREVIOUS BLEND ACTIVITY IS DETAILED IN TI: WS5G WHICH HAS NOW BEEN SUPERSEDED BY THIS TI. THE SUCCESSIVE BLENDS, BY DEFINITION, REDUCE THE CORROSION LEVEL OF THIS REPLACEMENT TO A LEVEL 1, REF KF MCO 3218, WO 1364378.