SDR ASAA2015103013690

Service difficulty report · Floor Support · Boeing 737790

Difficulty date: October 30, 2015
Submitted: November 10, 2015
Operation: Air carrier
Aircraft: N615AS
Make and model: Boeing 737790
Aircraft serial: 30344
Aircraft time: 53,277 hours, 24,015 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Floor Support
Part number: 147A5710Y1
Condition: Corroded
Location: Bs 987-993
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 FUSELAGE WET AREA, BS 987 +6, LBL 40 HAS CORROSION. ACFT GROUNDED. ORIGINAL MATERIAL THICKNESS .050", DAMAGED MATERIAL THICKNESS .007, REMAINING MATERIAL THICKNESS .043", FOUND TO BE OUT OF LIMITS IAW SRM 53-70-51USING UT GAUGE TOOL T8225Z, REMOVED SUPPORT BRACKET IAW SRM 51-40-02, RECEIVED NEW SUPPORT BRACKET PN 147A5710Y1. LOCATED, REAMED AND COUNTERSANK FASTENER HOLES ON NEW SUPPORT BRACKET IAW SRM 51-40-08, INSTALLED NEW SUPPORT BRACKET IAW SRM 51-40-02, DOT REMOVED .