SDR ASAA2017083021897

Service difficulty report · Floorbeam · Boeing 737890

Difficulty date: August 30, 2017
Submitted: September 12, 2017
Operation: Air carrier
Aircraft: N586AS
Make and model: Boeing 737890
Aircraft serial: 35189
Aircraft time: 37,874 hours, 11,545 cycles
System (JASC): 5315 · Fuselage Main, Floor Beam
Part: Floorbeam
Part number: 147A550611
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

CABIN FLOORBEAM STA 986 LEFT SIDE UPPER SURFACE O/B HAS CORROSION AT DOME NUT. GROUNDED - YES. REMOVED CORROSION IAW SRM 51-10-02, ORIG MAT .150" IAW SRM 53-70-51 TABLE 6, FIG 6, LOSS .055" OF MAT, REMAINING MAT .095" FOUND TO BE BEYOND LIMITS IAW SRM 53-70-51-1A. REPAIRED TCAP 986 FLOORBEAM UPPER SURFACE, LEFT SIDE IAW SRM 53-00-51, REPAIR 1.