SDR ASAA2016041816528

Service difficulty report · Floor Support · Boeing 737990

Difficulty date: April 18, 2016
Submitted: April 27, 2016
Operation: Air carrier
Aircraft: N309AS
Make and model: Boeing 737990
Aircraft serial: 30857
Aircraft time: 53,241 hours, 20,696 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Floor Support
Part number: 146A750218
Condition: Corroded
Location: Bs 727f-727i
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 COMPARTMENT, RT FLOOR SUPPORT ZEE CHANNEL SECTION APPROXIMATELY BS 727F+10 TO 727I+10 IS CORRODED, INTERGRANULAR. ACFT GROUNDED. REMOVED CORROSION IAW SRM 53-00-53-1A-2, ORIGINAL THICKNESS .040 REMAINING THICKNESS .031, REMOVED .009, FOUND TO BE OUT OF LIMITS IAW SRM 53-60-53-01-2 T8225V R & R ZEE CHANNEL IAW SRM 53-00-53-2R-5.