As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PDX FLIGHT NR 2311: WITH AIRCRAFT LOADED, AFTER PUSH BACK, NOSE STRUT APPEARS FLAT. MAINTENANCE SERVICED NOSE LANDING GEAR STRUT WITH NITROGEN PER SERVICE PLACARD USING A CALIBRATED GAUGE. NO PARTS REPLACED. AIRCRAFT RETURNED TO SERVICE.