SDR ASAA2014060408218

Service difficulty report · Floor Panel · Boeing 737990

Difficulty date: June 4, 2014
Submitted: March 5, 2015
Operation: Air carrier
Aircraft: N303AS
Make and model: Boeing 737990
Aircraft serial: 30016
Aircraft time: 47,541 hours, 18,178 cycles
System (JASC): 5321 · Fuselage Floor Panel
Part: Floor Panel
Part number: 146A9401U439
Condition: Corroded
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 PIT FLOOR SUPPORT CORRODED AROUND BOTTOM SIDES OF NUTPLATES BS 887, RBL 21-LBL 21, STR 26R-STR 26L. ACFT GROUNDED. REMOVED CORROSION ORIG MAT .070 MAT LOSS .009 MAT REMAINING .061 FOUND TO BE OUT OF LIMITS IAW SRM 53-00-53, ORIGINAL MATERIAL IAW DWG 146A9401, USE UT 8225P. REMOVED FLOOR SUPPORT IAW SRM 51-40-02. LOCATED AND DRILLED UP NEW FLOOR SUPPORT, PN 146A401U39, PO 813205.1 IAW SRM 51-40-05 INSTALLED NUTPLATES AND FLOOR SUPPORT, SIDE PLATE, IAW SRM 51-40-02, REMOVED DOT M337 .