N461MC

CESSNA 404 No injuries Part 91 — operator not named in the NTSB record

ATA 2210

Part: AUTOPILOT SYS — FAULTED · airframe 7,843 hrs · 5,230 cycles

DEPARTED KSGR HEADING TO KACK, APPROX 2 HRS 45 MINS INTO FLT, CAPTAIN REPORTED MULTIPLE EQUIPMENT ISSUES/FAILURES. NR 1 & 2 AHRS HEADING FLAGGED, AHRS 1 ADC INPUT, AUTO PILOT, RUDDER BOOST & MACH TRIM LIGHT CAME ON. NO CIRCUIT BREAKERS POPPED WITH ALL OF THESE EQUIPMENT ISSUES. THE CAPTAIN ELECTED TO DIVERT INTO KRIC. THE CREW LANDED SAFELY AT THE INTENDED AIRPORT. CHECKING THE FLT PATH OF THE AIRCRAFT, IT HAD WENT THROUGH THREE DIFFERENT STORM/WEATHER CELLS. THE FIRST AREA THEY WERE INSTRUCTED TO CHECK WAS THE NOSE AVIONICS BAY. IT HAS OCCURRED SEVERAL TIMES WHEN LEAR 60 ACFT HAVE FLOWN THROUGH RAIN OR SAT ON GROUND IN RAIN, THAT SLIGHT MOISTURE/HUMIDITY IN THE BAY CREATES ISSUES WITH EQUIPMENT. THE LOCAL MX CREW DID NOTE A SMALL AMOUNT OF WATER IN FLOOR OF BAY & IDENTIFIED A DOOR SEAL WHERE A POSSIBLE LEAK COULD BE. THIS AREA WAS RE SEALED & ENTIRE BAY WAS BLOWN OUT & DRIED. A COMPLETE FUNCTIONAL CHK OF AVIONICS/AUTOPILOT SYS COMPLETED MULTIPLE TIMES. ALL SYS FUNCTIONED NORMAL. ACFT RETURNED TO SERVICE & HAS COMPLETED 2 FLTS TOTALING 6 HRS. NO ISSUES REPORTED.

ATA 3620

Part: MIXING VALVE — INTERMITTENT (ZONE 400) · airframe 6,172 hrs · 4,168 cycles

ON SATURDAY 6-25-22, LEAR 60-284, N461MC WAS DEPARTING KAUS HEADING TO KELP, SHORTLY AFTER TAKEOFF THE CREW NOTICED DUAL BLEED AIR LIGHTS ILLUMINATED INDICATING HIGH TEMPERATURE IN THE TAIL SECTION, THE CAPTAIN REDUCED POWER, THE CREW THEN THOUGHT THEY NOTICED A LIGHT SMOKE SMELL. THEY THEN CONTACTED ATC TO RETURN TO KAUS. THE AIRCRAFT WAS LANDED SAFELY BACK AT KAUS. ATI JET MAINTENANCE WAS DISPATCHED TO AUS TO INSPECT THE AIRCRAFT. THE TAIL SECTION WAS ACCESSED TO CHECK FOR ANY BLEED AIR LEAKS WHICH WOULD TURN THE DUAL BLEED LIGHTS ON. THE ENGINES WERE RUN UP TO FULL POWER SEVERAL TIMES - NO LEAKS WERE NOTED AND THE BLEED AIR LIGHTS DID NOT ILLUMINATE. THE AIRCRAFT WAS THEN FLOWN TO ELP WITH NO ISSUES. THE COWLINGS WERE LOWERED TO CHECK TO BLEED AIR MIXING VALVE FUNCTIONS. THE ENGINES WERE RUN UP TO FULL POWER AGAIN THE RH MIXING VALVE DID NOT TRANSITION AT THE RIGHT TIME 1 OUT OF THE THREE FULL POWER RUNS. THE VALVE STAYED IN HIGH PRESSURE LONGER THAN IT SHOULD HAVE. THE BLEED LIGHTS STILL DID NOT ILLUMINATE. THE MIXING VALVE WAS REPLACED AND ENGINE RUNS COMPLETED - ALL INDICATIONS WERE NORMAL. A TEST FLIGHT WAS ALSO COMPLETED WITH NO ISSUES/DISCREPANCIES.