SDR ASAA2017112822814

Service difficulty report · Intercostal · Boeing 737890

Difficulty date: November 28, 2017
Submitted: December 11, 2017
Operation: Air carrier
Aircraft: N552AS
Make and model: Boeing 737890
Aircraft serial: 34595
Aircraft time: 44,153 hours, 14,778 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Intercostal
Part number: 147A56503
Condition: Corroded
Location: Bs947-967
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 CABIN FLOOR INTERCOSTAL STA 947.5-967 LBL 24 CORRODED. GROUNDED - YES. BLENDED CORROSION, ORIGINAL THICKNESS .150, MATERIAL REMAINING .130, REMOVED .020, OUT OF LIMITS IAW B737-800 SRM 53-70-51-1A-1. REMOVED AND REPLACED INTERCOSTAL P/N 147A5660-3 IAW BAC DWG 147A5650 REC A AND B737-800 SRM 51-40-02. DOT REMOVED.