SDR ASAA2017100522216

Service difficulty report · Floorbeam · Boeing 737990

Difficulty date: October 5, 2017
Submitted: October 18, 2017
Operation: Air carrier
Aircraft: N303AS
Make and model: Boeing 737990
Aircraft serial: 30016
Aircraft time: 58,579 hours, 22,838 cycles
System (JASC): 5315 · Fuselage Main, Floor Beam
Part: Floorbeam
Part number: 147A55067
Condition: Corroded
Location: Bs 986.5
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 BS 986.5 UPPER SURFACE CORRODED RBL 40 - 45. ACFT GROUNDED. FABRICATED, LOCATED, DRILLED, COUNTERSUNK, AND DEBURRED A NEW TEE REPAIR IAW SRM 53-70-51-2R-4, REPAIR 4. INSTALLED THE NEW UPPER TEE REPAIR IAW SRM 53-70-51-2R-4, REPAIR 4 AND INSTALLED IAW SRM 51-40-02 AND DRAWING 140A9870, REV B, SHEET 4, DWG 147A5700, REV -, SHEET 43.