SDR ASAA2016011015006

Service difficulty report · Stiffener · Boeing 737490

Difficulty date: January 10, 2016
Submitted: January 28, 2016
Operation: Air carrier
Aircraft: N706AS
Make and model: Boeing 737490
Aircraft serial: 28894
Aircraft time: 54,612 hours, 30,771 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Stiffener
Part number: 6546579531
Condition: Corroded
Location: Bs 1123-1128
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

APU COMPARTMENT RT TORQUE BOX AT APU INLET AFT SUPPORT ANGLE AT FS 1125 HAS SEVERAL AREAS OF HEAVY CORRODED NUT PLATE AREAS ARE BLOWN OUT WITH CORROSION. ACFT GROUNDED. R & R STIFFENER IAW SRM 51-40-02-0G-0, W 1", O .071", R 0, L 1", D .071.