What was found
D: CREW REPORTS APU FIRE FAIL CAUTION MESSAGE ON SHORT FINAL. DEFERRED APU FIRE DETECTION LOOPS PER MEL 26-12-1B. NO MX ACTION REQ'D & PLACARD INSTALLED. / C: MEL 26-12-1B / CAT C DUE 10/24/22 / SEE A/C MX LOG #1012872 / CREW REPORTS APU FIRE FAIL CAUTION MESSAGE ON SHORT FINAL (FLIGHT #5018 FILED CLOSED) OCT 14, 2022 STATION: RIW--DEFERRED APU FIRE DETECTION LOOPS PER MEL 26-12-1B. NO MX ACTION REQ'D & PLACARD INSTALLED. / SEE A/C MX LOG #1012872 FOR APU DEFERRAL / OCT 16, 2022 STATION: FWA -- TROUBLESHOT APU FIRE FAIL CAUTION PER FIM 26-10-00. REMOVED AND REPLACED FIRE DETECTOR CONTROLLER PER AMM 26-10-01. OPS CHECK GOOD AT THIS TIME. THIS CLEARS DMI. PLACARDS REMOVED.