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
Part
Floor Support
Part number
143A7501164
Condition
Corroded
Location
Bs 500c-500h
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 ZEE CHANNEL SECTION APPROXIMATELY BS 500C+15 TO 500H+10 IS CORRODED. ACFT GROUNDED. REMOVED CORROSION APPROXIMATELY BS 500C+15 TO 500F+7 AND FOUND WITHIN ALLOWABLE LIMITS IAW SRM 53-00-53-1A-2, ORIGINAL MATERIALS THICKNESS IS 0.040 IN REMOVED 0.004", REMAINING THICKNESS IS 0.036" ALODINED REWORKED AREAS BS 500C+15 TO 500F+7 IAW SRM 51-20-01, PRIMED REWORKED AREAS BS 500C+15 TO 500F+7 IAW BS SOPM 20-41-02 APPLIED TOPCOAT AND BLENDOUT MARKING TO REWORKED AREAS BS 500C+15 TO 500F+7 IAW AMM 51-21-73 AND 51-05-01. REPLACED LT ZEE CHANNEL SECTION SA 500F+8 TO 500L IAW SRM 53-00-53-2R-5.