As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BOI FLIGHT NR 2388: LEFT MAIN GEAR WAS SLOW TO RETRACT ON TAKEOFF. TOOK APPROXIMATELY 15 SECONDS LONGER TO RETRACT THAN THE RIGHT MAIN GEAR. MAINTENANCE ADJUSTED OF THE LT MLG RETRACTION ACTUATOR. SWUNG GEAR. FUNCTIONAL TEST GOOD. NO PARTS REPLACED. AIRCRAFT RETURNED TO SERVICE.