N685BA
Registered owner: BUSINESS AVIATION COURIER INC, SD (owner ≠ operator)
Operators of this aircraft
Who operated this tail, and how firmly we know it.
| Operator | Role | Period | Basis |
|---|---|---|---|
| BUSINESS AVIATION COURIER, INC. (DUFA) | Certificate holder | — | Matched by certificate designator |
Accident & incident history
No NTSB accidents or incidents on file for this aircraft.
Maintenance disclosures
WHILE IN CRUISE FLIGHT, THE PILOT NOTICED THE RIGHT ENGINE OIL TEMP CLIMBING TO NEAR RED LINE TEMPERATURE. THE OIL PRESSURE AND ALL OTHER ENGINE PARAMETERS APPEARED NORMAL BUT AS A PRECAUTION, THE PILOT SHUT DOWN THE RIGHT ENGINE. DIVERTED TO THE NEAREST SUITABLE AIRPORT AND MADE AN UNEVENTFUL LANDING. INVESTIGATION FOUND NO OBVIOUS DISCREPANCIES. ENGINE GROUND RUNS WERE PERFORMED AND THE OIL TEMP REMAINED IN THE NORMAL RANGE.
JUST AFTER BEGINNING HIS DESCENT, THE PILOT NOTICED HIS LEFT WING OVERHEAT LIGHT HAD ILLUMINATED STEADY. FOLLOWING PROCEDURES, THE PILOT CLOSED HIS LEFT BLEED AIR VALVE, TURNED OFF THE LEFT GENERATOR AND EXTENDED THE LANDING GEAR. AFTER A COUPLE OF MINUTES HAD PASSED, THE WING OVERHEAT LIGHT REMAINED ON. FOLLOWING THE PROCEDURE FOR THIS, THE PILOT SHUT DOWN THE LEFT ENGINE AS REQUIRED BY THE FLIGHT MANUAL. THE LIGHT STILL REMAINED ILLUMINATED SO, DUE TO THE WEATHER, THE PILOT DIVERTED TO THE NEAREST AIRPORT AND LANDED. INVESTIGATION DISCOVERED THAT THIS HAD BEEN A FALSE INDICATION PROBLEM DUE TO A CHAFED WIRE TO GROUND.
THE PILOT WAS ATTEMPTING TO START THE ENGINE WHEN THE EGT TEMP BEGAN TO ACCELERATE TO NEAR THE RED LINE INDICATION. HE ABORTED THE START AND NOTIFIED MX. MX PERSONELL MADE ANOTHER ATTEMPT TO START THE ENGINE BUT AGAIN, THE EGT TEMP BEGAN TO RISE RAPIDLY TO NEAR THE RED LINE SO THE START WAS ABORTED. THE END CAP OF THE P3 CHAMBER ON THE FCU WAS REMOVED AND CORROSION WAS EVIDENT ON THE CAP. UPON FURTHER INVESTIGATION IT WAS NOTED THAT THE TEFLON BACK-UP RING AND THE O-RING ON THE PISTON WERE DETERIORATING AND LEAVING PARTICLES ALONG THE CYLINDER WALL AND INTO THE BOTTOM OF THE CHAMBER. A SERVICEABLE FCU WAS INSTALLED WHICH CORRECTED THE PROBLEM. ENGINEERING WAS CONTACTED AND APPEARED INTERESTED IN INVESTIGATING THE CAUSE HOWEVER NO CONCLUSIONS HAVE BEEN MADE SO FAR.
AFTER START UP, THE PILOT WAS STARTING HIS TAXI ROLL WHEN THE ACFT BEGAN TO TURN LT. HE MADE SEVERAL ATTEMPTS TO CORRECT IT BUT THE ACFT CONTINUED LT UNTIL IT WAS HARD OVER. THE ACFT WAS BROUGHT IN AND THE PROBLEM COULD NOT BE DUPLICATED. THE POTS FROM THE ACTUATOR AND RUDDER PEDALS WERE REMOVED AND OHMED OUT. THE WIRING AND CONNECTORS WERE INSPECTED AND CHECKED OK. THE NWS SERVO VALVE WAS REMOVED AND SWAPPED WITH A KNOWN SERVICEABLE UNIT FROM ANOTHER ACFT AND BOTH OPS CHECKED OK. THE FOLLOWING DAY THE SUSPECT VALVE WHICH HAD BEEN INSTALLED ON ANOTHER ACFT FAILED WITH A UNCOMMANDED HARD LT TURN WHILE TAXIING. THERE APPEARS TO BE AN INTERMITTENT PROBLEM WITH THE SERVO VALVE SO A NEW VALVE WAS PURCHASED AND INSTALLED WHICH OPS CHECKED GOOD.
AFTER LANDING ROLLOUT AND AT APPROX TAXI SPEED, THE PILOT ENGAGED THE NOSE WHEEL STEERING SYS AND IMMEDIATELY ENCOUNTERED AN UNCOMMANDED HARD LT TURN. THE PILOT WAS ABLE TO STOP THE ACFT WITH ONLY THE NOSE WHEEL OFF THE EDGE OF THE RUNWAY. THE ACFT WAS PUSHED BACK ON THE RUNWAY AND TOWED TO MX. THE HYD MULE WAS CONNECTED TO THE ACFT AND THE NOSE WHEEL SYS ACTIVATED WHICH OPERATED NORMALLY. THE WIRING HARNESSES AND CONNECTOR PINS AND SOCKETS WERE INDIVIDUALLY CHECKED WITH NO PROBLEMS NOTED. AFTER SEVERAL ATTEMPTS, THE PROBLEM COULD NOT BE DUPLICATED. MX WAS UNABLE TO DETERMINE THE CAUSE AT THIS TIME.