SDR ASAA2017101122249

Service difficulty report · Web · Boeing 737890

Difficulty date: October 11, 2017
Submitted: October 20, 2017
Operation: Air carrier
Aircraft: N558AS
Make and model: Boeing 737890
Aircraft serial: 35177
Aircraft time: 43,096 hours, 12,679 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Web
Part number: 146A81236
Condition: Corroded
Location: Bs 794-847
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 CARGO DOOR CUTOUT, LOWER SILL WEB CORRODED AND HAS LARGE AREAS OF BARE METAL AND PEELING PAINT. ACFT GROUNDED. REMOVED THE CORROSION AND FOUND TO BE OUT OF LIMITS IAW SRM 53-60-15-1A-1. REMOVED AND REPLACED THE LOWER SILL WEB IAW SRM 51-40-02, DWG 146A8120, REV, DWG 146A8340, REV A, SRM 51-40-02, AND INSTALLED A NEW LOWER SILL WEB IAW DWG 146A8340, REV A AND SRM 51-40-02.