SDR ASAA2016110518761

Service difficulty report · Floorbeam · Boeing 737890

Difficulty date: November 5, 2016
Submitted: November 22, 2016
Operation: Air carrier
Aircraft: N548AS
Make and model: Boeing 737890
Aircraft serial: 30020
Aircraft time: 42,686 hours, 14,154 cycles
System (JASC): 5315 · Fuselage Main, Floor Beam
Part: Floorbeam
Part number: 147A550419
Condition: Corroded
Location: Bs 947
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

MAIN CABIN FLOOR STRUCTURE AFT WET AREA, FLOORBEAM AT BS 947.5, RBL 50, LOCATED NEAR LAV MOUNT CORRODED ON UPPER SURFACE. ACFT GROUNDED. REMOVED CORROSION ON UPPER SURFACE AND FOUND TO BE OUT OF LIMITS IAW SRM 53-70-51-1A-1 FIGURE 103, DETAIL C. REPAIRED THE FLOORBEAM RBL 42- 60 IAW SRM 53-70-51-2R-5, REPAIR 5, ALTERNATIVE 2.