What was found
ON SATURDAY 1/3/2026, N198HB CYO198, DEPARTED KERI HEADING TO KECP. DURING CLIMB, THE PRESSURIZATION SYSTEM DUAL BLEED AIR WARNING LIGHTS ILLUMINATED. THE CAPTAIN DECIDED TO DIVERT/RETURN TO KERI. LOCAL MAINTENANCE WAS CALLED AND ENGINE RUNS WERE COMPLETED FOR A LEAK CHECK OF THE BLEED AIR SYSTEM. SECTIONS OF THE BLEED AIR TUBES IN THE TAIL SECTION WERE IDENTIFIED WITH THE TEMP SENSOR POSITIONED VERY CLOSE TO THE BLEED AIR TUBES. THE SENSOR SECTIONS WERE RE POSITIONED COMPARING PLACEMENT TO THE REST OF THE SYSTEM AND REFERENCING THE LEARJET M.M. ENGINE RUNS WERE COMPLETED AGAIN WITH NO ISSUES REPORTED. A TEST FLIGHT WILL BE COMPLETED BEFORE IT IS RETURNED TO SERVICE FOR FINAL DETERMINATION OF CONTINUING ISSUE.