N778MA
Registered owner: UMB BANK NA TRUSTEE, UT (owner ≠ operator)
Operators of this aircraft
Who operated this tail, and how firmly we know it.
No operator established for this aircraft.
Accident & incident history
No NTSB accidents or incidents on file for this aircraft.
Maintenance disclosures
Service Difficulty Reports filed with the FAA for this airframe. Filing is largely voluntary — the number of reports is not a measure of reliability. To verify a report, search its control number at the FAA SDRS site.
3 reports on file, 2021-02-22 – 2024-04-14.
Part: LUBRICATION UNIT — LEAKING (ENGINE) · airframe 55,596 hrs · 17,376 cycles
AN OIL LEAK WAS FOUND ON THE ENGINE LUBRICATION UNIT WHERE THE AFT SUMP OIL SCAVENGE TUBE CONNECTS TO THE LUBRICATION UNIT. THE OIL SCAVENGE TUBE WAS REMOVED AND A NEW GASKET WAS INSTALLED. THE FOUR ATTACHING BOLTS WERE INSTALLED AND TORQUED PER THE AMM, USING A CALIBRATED TORQUE WRENCH. THE ENGINE RUN WAS ACCOMPLISHED WITH NO OIL LEAKS NOTED. A FLIGHT WAS INITIATED AND WHILE IN FLIGHT THE SCAVENGE OIL LINE LEAKED AT THE LUBRICATION UNIT, REQUIRING AN INFLIGHT SHUTDOWN OF THE ENGINE. MAINTENANCE REMOVED THE OIL LINE FROM THE LUBRICATION UNIT. INSPECTION FOUND THE THREADED INSERTS IN THE FOUR ATTACHING HOLES OF THE LUBRICATION UNIT HAD BACKED OUT AND WERE PROTRUDING ABOVE THE SURFACE OF THE LUBRICATION UNIT. THIS CONDITION PREVENTED THE GASKET FROM SEALING BETWEEN THE UNIT AND OIL LINE. THE LUBRICATION UNIT WAS SUBSEQUENTLY REPLACED WITH NO FURTHER LEAKS. THE THREADED INSERTS IN THE LUBRICATION UNIT SHOULD BE INSPECTED TO MAKE SURE THEY ARE SECURE, INSTALLED CORRECTLY AND NOT PROTRUDING ABOVE THE MATING SURFACE WHEN OIL LINES ARE ATTACHED TO THE LUBRICATION UNIT.
Part: SHUTOFF VALVE — MALFUNCTIONED (RT ENGINE) · airframe 55,000 hrs · 17,235 cycles
AIRCRAFT SLOWLY LOST PRESSURIZATION AT 300 FPM DURING CRUISE FLIGHT. TROUBLESHOT THE PROBLEM USING THE BOEING 737 FIM. DETERMINED TO BE LOW AIR DUCT PRESSURE COMING FROM THE RIGHT ENGINE. USING STEPS LISTED IN THE FIM TO TEST VALVES ON THE RIGHT ENGINE, DETERMINED THE RIGHT PRESSURE REGULATING AND SHUTOFF VALVE NEEDED TO BE CHANGED. CHANGED THE VALVE AND PERFORMED ENGINE RUNS. RIGHT ENGINE AIR DUCT PRESSURE WAS NOW CORRECT.
Part: LAMP — BLOWN (EXTERIOR LIGHT)
LEFT HAND EXTERIOR OVERWING EMERGENCY LIGHTS INOP. RELAMPED OPS CK OK.