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SDR ASAA2016032116285

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Service difficulty report · Web · Boeing 737990

FAA SDR system

Difficulty date
March 21, 2016
Submitted
April 11, 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
Web
Part number
146A812319
Condition
Corroded
Location
Bs 767-787
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, DOOR SURROUND LOWER SILL WEB IS CORRODED AT APPROXIMATELY BS 772. ACFT GROUNDED. REMOVED CORROSION ANDD FOUND BEYOND ALLOWABLE LIMITS IAW SRM 53-60-15-1A-1. ORIGINAL MATERIAL THICKNESS IS 0.050", REMOVED 0.006 IN, REMAINING THICKNESS IS 0.044". R & R NEXT HIGHER ASSY WEB ASSY 146A8123-20 IAW SRM 51-40-02 AND BAC DWG 146A0081, REV A. INSTALLED NEW SILL WEB IAW SRM 51-40-02 AND DWG 146A0081. REV A.