What was found
ON A PRACTICE CAT IIIA AUTOLAND APPROACH, AT APPROX 1,000 AGL, AUTOPILOT A DISENGAGED WITH NO APPARENT CAUSE. ALL PROCEDURES PERFORMED WERE STANDARD IAW A CAT III AUTOLAND APPROACH. ONCE NOTED WE PERFORMED A NORMAL MANUAL AAPROACH AND LANDING. ACFT GROUNDED. PERFORMED DFCS BITE TEST IAW FIM 22-11 TASK 801 FAULT REVIEW. CURRENT STATUS, NO FAULTS. FAULT HISTORY - NO FAULT BY FLT LEG. PERFORMED LAND VERIFY IAW AMM 22-11-00/201. BITE GRP 49. TESTS OK. ALL LWMP REQUIRED TESTS COMPLETE AND OK IAW AMM 22-00-01.