SDR ASAA2018112427458

Service difficulty report · Intercostal · Boeing 737790

Difficulty date: November 24, 2018
Submitted: December 19, 2018
Operation: Air carrier
Aircraft: N618AS
Make and model: Boeing 737790
Aircraft serial: 30543
Aircraft time: 59,712 hours, 28,038 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Intercostal
Part number: 147A56602
Condition: Corroded
Location: Fuselage
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

MAIN CABIN, AFT WET AREA, INTERCOSTAL AT STA 947.5-STA 967, RBL 50.92 CORRODED. GROUNDED - YES. EVALUATED THE INTERCOSTAL AT STA 947.5 - STA 967, RBL 50.92, WL 208.1 AND FOUND TO BE OUT OF LIMITS IAW SRM 53-70-51-1A-1 FIG 103, DETAIL C. ORIGINAL THICKNESS 0.2050, REMAINING THICKNESS 0.125, REMOVED 0.080.