As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APU DROPPED OFF LINE TWICE PRIOR TO BLOCK OUT(<P>TRANSFERRED TO MDDR 156768 IAW MEL 49-11-01A, <SPAN>CAT C DUE DATE 24NOV21. </SPAN></P> / <P><SPAN>APU ECU INDICATES " GEN FILTER" AS CAUSE FOR SHUT DOWN </SPAN></P> / <P>16NOV21 - LOG 1429853 - ITEM #10 - CVG - REMOVED AND REPLACED APU OIL FILTER DIFFERENTIAL PRESS SWITCH IAW AMM 49-27-15. OPS CKS AND LK CKS GOOD THIS CLEARS MDDR 1429853.</P>)