What was found
OXY LO PRESS CAUTION MSG IN FLIGHT €” 29,000FT/-40*C/1390 PSI. RAN QRH & DESCENDED. PSI HELD STEADY AT 1360 PSI AT LOWER ALTITUDE. CAUTION MSG REMAINED ON THROUGHOUT FLT. ACFT WAS SVC€™D AT SGF, PRIOR TO DEPARTURE. INDICATED 1510 PSI AT 11*C AT GATE. ON CLIMBOUT, PSI INDICATED 1440 PSI AND DECREASED STEADILY TO 1390 PSI WHEN CAUTION ILLUMINATED. (FLIGHT 5585 FILED CLOSED)THIS DISCREPANCY WAS TRANSFERRED TO CAMP ITEM 27299628 WITH THE FOLLOWING CORRECTIVE ACTION: "REFERENCE AML 1229487, CP27299784, ML27299629 FOR TROUBLESHOOTING AND LEAK CHECK. LEAK CHECK GOOD AIRCRAFT OK FOR SERVICE."