N648DX
Registered owner: QUEST DIAGNOSTICS CLINICAL LABORATORIES INC, PA (owner ≠ operator)
Operators of this aircraft
Who operated this tail, and how firmly we know it.
| Operator | Role | Period | Basis |
|---|---|---|---|
| QUEST DIAGNOSTICS INC (Q5QA) | Certificate holder | — | Matched by certificate designator |
Accident & incident history
No NTSB accidents or incidents on file for this aircraft.
Maintenance disclosures
PILOT NOTED THE LEFT MAIN TIRE WAS FLAT ON LANDING. REMOVED FAILED WHEEL ASSEMBLY AND INSTALLED A REPLACEMENT OVERHAULED WHEEL ASSEMBLY WITH NEW TIRE. THE AIRCRAFT WAS RETURNED TO SERVICE.
WHEN THE PILOT DEPARTED AND BEGAN THE TAXI, IMMEDIATELY NOTICED A PROBLEM AND SHUTDOWN. DISCOVERED THE RT WHEEL & TIRE ASSEMBLY WAS COMPLETELY FLAT. AFTER THE WHEEL HAD BEEN REMOVED, AN INSPECTION DISCLOSED THAT THE ASSEMBLY O-RING WAS SLICED IN TWO PLACES. THERE IS ONLY ONE PROBABLE REASON WHY THE O-RING COULD HAVE BEEN DAMAGED IN THIS MANNER: THE O-RING WAS NOT FULLY SEATED IN THE WHEEL SEAL GROOVE IN THE TWO DAMAGED AREAS WHEN THE WHEEL WAS ASSEMBLED.
LOSS OF ENGINE OIL PRESSURE IN FLIGHT REQUIRING ENGINE SHUTDOWN.
ON APPROACH, PILOT UNABLE TO RETARD THE RT THROTTLE COMPLETELY. A SUCCESSFUL LANDING WAS ACCOMPLISHED. INSPECTION REVEALED ONE OF THE DUST COVER SEGMENTS FOR THAT THROTTLE WAS NOT MOVING IN SEQUENCE WITH THROTTLE MOVEMENT. ON FURTHER INVESTIGATION, IT WAS FOUND THAT THE TAB THAT HOOKS THE DEFECTIVE SEGMENT TO THE NEXT SEGMENT HAD BROKEN AND DROPPED INTO THE ACTUATOR GEARS INSIDE THE THROTTLE QUADRANT PREVENTING COMPLETE THROTTLE LEVER MOVEMENT. THE THROTTLE JAM OCCURRED DURING DESCENDING POWER LEVER MOVEMENT AND NOT IN SOME OTHER FLIGHT CRITICAL PHASE OF OPERATION.