What was found
DEPARTED KCPP HEADING TO KSDL. IN CRUISE ABOUT 1.5 HRS INTO FLT, CAPTAIN REPORTED DUAL BLEED LIGHTS CAME ON INDICATING A BLEED AIR LEAK IN THE TAIL SECTION. CAPTAIN REDUCED POWER & LIGHTS WENT OUT A COUPLE MINS LATER. CAME BACK ON WHEN POWER LEVERS ADVANCED. CREW DECIDED TO DIVERT TO KOKC. ACFT LANDED SAFELY IN OKC. LOCAL MAINT CALLED TO INVESTIGATE POSSIBILITY OF A BLEED AIR LEAK IN TAIL SECTION. CREW PERFORMED ENG RUNS WHILE MAINT LEAK CHECKED BLEED AIR SYS. MX FOUND A SENSE LINE B NUT HAD WORKED LOOSE BLOWING A SMALL AMOUNT OF BLEED AIR TOWARDS A TEMP SENSOR. SENSE LINE WAS RESECURED & ENG RUNS/LEAK CHECKS COMPLETED. NO OTHER LEAKS NOTED. ACFT REPOSITIONED TO KELP WITH ISSUES. BLEED AIR SYSTEM & THE LEAKING B NUT WERE INSPECTED AGAIN BY ATI MAINTENANCE WITH NO DISCREPANCIES NOTED.