SDR ASAA2017102322387

Service difficulty report · Stiffener · Boeing 737790

Difficulty date: October 23, 2017
Submitted: November 2, 2017
Operation: Air carrier
Aircraft: N614AS
Make and model: Boeing 737790
Aircraft serial: 30343
Aircraft time: 58,856 hours, 26,992 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Stiffener
Part number: 148A248823
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

AFT ACCESSORY BAY BS 1088 BULKHEAD CUTOUT FOR APU INLET DUCT HAS AREAS OF CORROSION ON THE VERTICAL STIFFENER. ACFT GROUNDED. REMOVED CORROSION AND FOUND OUT OF LIMITS. REMOVED, FABRICATED, AND INSTALLED A NEW STIFFENER IAW SRM 51-40-02-0G-0, 51-30-01-0G-0, 53-80-08-1A.