SDR DALA2016061504790

Service difficulty report · Floor Support · Boeing 757232

Difficulty date: June 14, 2016
Submitted: June 20, 2016
Operation: Air carrier
Aircraft: N664DN
Make and model: Boeing 757232
Aircraft serial: 25012
Aircraft time: 82,270 hours, 37,450 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Floor Support
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 IN SEVERAL SPOTS ON ENTRY WAY FLOOR SUPPORT UPPER SURFACE BS 1664-1681 INBD OF R4 THRESHOLD. EVALUATED MAIN CABIN FLOOR SUPPORT, STA 1664-1681 FOUND TO BE 100 PERCENT MATERIAL LOSS AND IS BEYOND LIMITS IAW SRM 53-00-51. LOCATED DRILLED AND DEBURRED NEW FLOOR SUPPORT, PN 146N5246U6, PO 664DN-00041 IAW DWG 146N5230, REV: D. INSTALLED NEW FLOOR SUPPORT, STA 1664-1681 IAW SRM 51-40-02 AND DWG 146N5230, REV: D.