SDR ASAA2018050824689

Service difficulty report · Floor Support · Boeing 737990

Difficulty date: May 8, 2018
Submitted: May 21, 2018
Operation: Air carrier
Aircraft: N307AS
Make and model: Boeing 737990
Aircraft serial: 30015
Aircraft time: 60,292 hours, 23,855 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Floor Support
Part number: 146A750129
Condition: Corroded
Location: Bs 787-847
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

AFT CARGO FLOOR SUPPORT CORRODED BETWEEN BS 787 - 847, RBL 13.84. ACFT GROUNDED. ON FURTHER EVALUATION THE FLOOR SUPPORT WAS FOUND TO BE CORRODED 100% THROUGH THE MATERIAL AND OUT OF LIMITS IAW SRM 53-00-53-1A-2. REMOVED AND REPLACED THE FLOOR SUPPORT FROM BS 727I+5 TO 890 IAW SRM 51-40-02, SRM 51-40-05, DWG 146A7500, REV A, AND SRM 51-40-03-05-0, TABLE 2.