SDR ASAA2016032216344

Service difficulty report · Floor Support · Boeing 737990

Difficulty date: March 22, 2016
Submitted: April 13, 2016
Operation: Air carrier
Aircraft: N320AS
Make and model: Boeing 737990
Aircraft serial: 33680
Aircraft time: 45,793 hours, 17,529 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Floor Support
Part number: 143A7501164
Condition: Corroded
Location: Bs 500h-500l
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

FWD CARGO COMPARTMENT, LT FLOOR SUPPORT CHANNEL SECTION APPROXIMATELY BS 500H+10 TO 500L IS CORRODED. ACFT GROUNDED. REMOVED CORROSION AND FOUND BEYOND ALLOWABLE LIMITS IAW SRM 53-00-53-1A-2, ORIGINAL MATERIAL THICKNESS IS 0.040", MINIMUM REMAINING THICKNESS IS 0.035", REPLACEMENT OF ZEE CHANNEL SECTION APPROXIMATELY BS 500H+10 TO 500L ACCOMPLISHED ON CARD G66452, IAW SRM 53-00-53-2R-5.