SDR SCNA20201124331

Service difficulty report · Floorbeam · Boeing 7378K2

Difficulty date: November 13, 2020
Submitted: November 24, 2020
Operation: Air carrier
Aircraft: N817SY
Make and model: Boeing 7378K2
Aircraft serial: 30392
Aircraft time: 65,543 hours, 25,167 cycles
System (JASC): 5315 · Fuselage Main, Floor Beam
Part: Floorbeam
Condition: Corroded
Location: Fuselage
Stage of operation: IN
How discovered: 9
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 ON AFT CABIN FLOOR BEAM, STA 986, LBL 44 TO RBL 44, WL 208. CORROSION ON STA 986 FLOOR BEAM LBL 44-RBL 44 WL 208 FOUND TO BE OUT OF LIMITS, DUE TO NO SRM ALLOWABLE LIMITS FOR EXISTING REPAIRS. REMOVED AND REPLACED UPPER CHORD AND FASTENERS, PER 737-800 SRM 51-40-02 AS SHOWN IN 737-800 SRM 53-70-51-2R-4.

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