N910SA
Registered owner: PERSISTENT ROOTS LLC, IL (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
INSPECTION DISCLOSED WING STRINGER ON LOWER RH WING WAS CRACKED INBOARD AND OUTBOARD OF RIB AT W.S 108.5
DURING A ROUTINE INSPECTION OF THE ALTERNATOR DRIVE HUB, THE INSPECTOR NOTED THE CASTELLATED NUT RETAINING THE DRIVE HUB WAS LOOSE (THE COTTER PIN THROUGH THE CASTELLATED NUT WAS STILL IN PLACE). INSPECTION AFTER REMOVAL OF THE DRIVE HUB ASSEMBLY DISCLOSED EXCESSIVE WEAR ON THE THRUST WASHER, DRIVE HUB GEAR AND DRIVE HUB HOUSING FACE. INSTRUCTIONS FOR THE INSTALLATION OF THE HUB REQUIRES A LUBRICATED TORQUE OF THE CASTELLATED NUT OF 300 TO 450 INCH POUNDS (PUBLICATION M-16). THE DRIVE HUB ASSEMBLY WAS OVERHAULED WITH 396.8 HOURS SINCE INSTALLATION. REPLACED THE DRIVE HUB WITH A NEW DRIVE HUB, NEW THRUST WASHER AND NEW DRIVE KEY.
THE LT ALTERNATOR WAS REMOVED FOR ROUTINE INSPECTIONS. AFTER REMOVING THE COVER FROM THE BACK OF THE ALTERNATOR, THE TECHNICIAN NOTED SOME GREEN DISCOLORATION ON ONE OF THE DIODES. FURTHER INVESTIGATION DISCLOSED THE DIODE WIRE WAS BROKEN OFF OF THE DIODE BASE. THE SAME WIRE WAS DISCOVERED BROKEN OFF AT THE TOP OF AN ADJACENT DIODE. REPLACED THE ALTERNATOR.
THE LANDING GEAR ACTUATOR AND MOTOR ASSY WAS R & R WITH LANDING GEAR ACTUATOR PN 95-810017-23 DURING MX WITH AN O/H UNIT. DURING LANDING GEAR RIGGING, MOTOR SOUNDED OK AS THE GEAR WAS BROUGHT UP. WHEN GEAR WAS SELECTED DOWN, ACTUATOR AND MOTOR MADE A SLOW, DEEP GRINDING NOISE. MOTOR WAS REMOVED FOR INSP. IT WAS NOTICED THAT THE WASHER PN 105090CR032-4E, IPC 32-30-00-04, IN BETWEEN MOTOR AND GEAR, WAS MISSING. MOTOR HAD SIGNS OF RUBBING BY THE PINION GEAR. FURTHER INVESTIGATION REVEALED THAT THE WASHER WAS MISPLACED BETWEEN THE GEAR ACTUATOR HSG AND SPUR AND PINION GEAR PN 35-810135. IF THE UNITS ARE ASSEMBLED IAW THE MM THE NARRATIVE NEVER TELLS YOU TO INSTALL THE PN 105090CR032-4E WASHER, AND FIG 202- "LANDING GEAR ACTUATOR ASSY" DOES NOT DEPICT THE WASHER. THE IPC 32-30-00-04 FIG 2 OF 2 DOES SHOW THE WASHER (ITEM 320) IN ITS PROPER LOCATION. THIS IS CONFUSING AND MISLEADING.