As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
YVR/PHX - FLT 2278 - AIR TURNBACK. FLIGHT CREW REPORTED LEFT IRS FAILED, GPWS FAILED AND THE NR 6 SLAT INTRANSIT LIGHT ILLUMINATED ON FORWARD AND OVERHEAD. CONTRACT MAINTENANCE REALIGNED IRS'S WITH NO DEFECTS NOTED. GPWS BITE NORMAL. OPERATED SLATS/FLAPS SEVERAL TIMES WITH NO FAULTY INDICATIONS NOTED. SLATS PHYSICALLY OPERATED NORMALLY. (X)