SDR DALA2018050403124

Service difficulty report · Threshold · Boeing 757251

Difficulty date: May 3, 2018
Submitted: May 17, 2018
Operation: Air carrier
Aircraft: N554NW
Make and model: Boeing 757251
Aircraft serial: 26501
Aircraft time: 47,167 hours, 20,818 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Threshold
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

WHILE PERFORMING INSPECTION OF NRC 100-175 FOUND FORWARD CARGO DOOR CUTOUT LOWER THRESHOLD PLATE WITH EXFOLIATED CORROSION STA 600. REMOVED FWD CARGO DOOR LOWER THRESHOLD PIT, PANEL SUPPORT BRACKET, AND FITTING ASSY TO GAIN ACCESS TO CORRODED FITTING IAW SRM 51-40-02 PAGES 2 AND 7. REMOVED CORRODED FITTING. INSTALLED NEW FITTING IAW SRM 51-40-02 PARA 70 PAGES 6 & 7. ACCESS RESTORATION ACCOMPLISHED ON NRC #100-299.