SDR ASAA2015100113536

Service difficulty report · Stiffener · Boeing 737490

Difficulty date: October 1, 2015
Submitted: October 29, 2015
Operation: Air carrier
Aircraft: N703AS
Make and model: Boeing 737490
Aircraft serial: 28893
Aircraft time: 53,972 hours, 30,578 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Stiffener
Part number: 654657291
Condition: Corroded
Location: Bs 1088
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 TORQUE BOX CUTOUT AT 10888 BULKHEAD INBD STIFFENER FLANGE CORRODED. ACFT GROUNDED. REMOVED CORROSION AND CHECKED LIMITS, FOUND TO BE OUT OF LIMITS IAW SRM 53-80-08-1A-1, FIG 11. NOTED G DETAIL VI R & R STIFFENER IAW SRM 51-40-02-0G-0, PARA 4, W .75", O .070", R .056", L 2.0", D .014".