As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON DESCENT TURNED ON ENG - WING ANTI-ICE RECEIVED "A WING A-ICE L DISAG ALERT SHORTLY AFTER RECEIVED AN AIR MANF 1 FAIL" COMPLIED WITH QRH AND DIVERTED, WITHOUT INCIDENT. R & R LT MANIFOLD FAILURE DETECTION PRESSURE SWITCH IAW MM 36-23-03-4. ALSO REPLACED NR1 ENGINE MANIFOLD FAILURE DELAY RELAY R2-5256. PERFORMED PNEUMATIC SYS PRESSURE DECAY TEST IAW MM 36-00-02-5. DECAY TIME IS IN LIMITS IAW TABLE 1. NO FURTHER DEFECTS NOTED, OK FOR SERVICE.