N391AL

Part: WIRE — SHORTED (FLT CONTROL SYS)

IN FLIGHT, BOTH ELEVATORS FAILED, AARS ROLL FAILED, SCAS PITCH FAILED, AND FBW ELEVATORS WENT FULL UP. THE AIRCRAFT ROLLED LT AND PITCHED UP. WITH FULL FWD AND FULL RT CYCLIC, PILOTS DID NOT REGAIN CYCLIC CONTROL UNTIL THE AIRSPEED HAD DROPPED BELOW 100 KTS. MAINTENANCE FOUND HIGH RESISTANCE SHORT TO GROUNDED SHIELD IN NR 2 PITCH CONTROL MOTION TRANSDUCER WIRE SEGMENT. REPLACED WIRE SEGMENT IAW BHT ELECTRICAL STANDARD PRACTICES MANUAL. GROUND OP CHECK GOOD. (K)

Part: FILTER — FAILED (FUEL SYS)

ON TAKEOFF, NR 2 ENGINE FUEL FILTER LIGHT CAME ON, AND THE PILOT LANDED THE AC. THE MECHANIC REMOVED AND REPLACED NR 2 ENGINE FUEL FILTER ELEMENT, GROUND RUN AND LEAK CHECKED IAW MM, AC WAS RETURNED TO SERVICE. (K)

Part: ECU — FAILED (NR 1 ENGINE)

NR 1 ENGINE FAILED DURING TAKE OFF, AIRCRAFT RETURNED TO PLATFORM. MAINT REMOVED NR 1 ENGINE HMU AND INSTALLED SERVICEABLE HMU. ALSO REMOVED NR 1 ENGINE ECU AND INSTALLED SERVICEABLE ECU.

Part: HMU — FAILED (NR 1 ENGINE)

NR 1 ENGINE FAILED DURING TAKE OFF, AIRCRAFT RETURNED TO PLATFORM. MAINT REMOVED NR 1 ENGINE HMU AND INSTALLED SERVICEABLE HMU ALSO REMOVED NR 1 ENGINE ECU AND INSTALLED SERVICEABLE ECU.

Part: STARTER — MALFUNCTIONED (ENGINE)

WILL NOT ENGAGE EVERYTIME. REQUEST WARRANTY REPAIR. RO 33256 DMR 719713

Part: STARTER — FAILED (ENGINE)

STARTER WILL NOT ENGAGE. REQUEST WARRANTY REPAIR. DMR 719714 RO33252

Part: SKID — MISMANUFACTURED (MLG)

PART TT: NEW: FWD AND AFT SKID TUBE INSERTS WILL NOT ALIGN FOR ATTACHMENT- MISMANUFACTURED.

Part: PLATE — MISMANUFACTURED (MASTER SPLINE)

DURING REPLACEMENT OF THE DRIVEPLATE WITH THE NEW UNIT. PART IS MISMANUFACTURED: MASTER SPLINE IS MACHINED APPROXIMATELY 45 DEGREES COUNTER CLOCKWISE FROM ITS PROPER LOCATION.

Part: ENGINE — CHIP LIGHT (RIGHT ENGINE)

NR 2 ENGINE CHIP LIGHT ILLUMINATED. SHUT DOWN NR 2 ENGINE, CONTINUED IN-FLIGHT. INSPECTED CHIP DETECTOR AND FOUND 2 SMALL FLAKES. INSPECTED OIL PUMP SCREENS, FOUND NO METAL. DETERMINED FLAKES ALLOWABLE, GROUND AIRCRAFT 45 MINUTE PENALTY RUN. RECHECKED CHIP PLUGS, FOUND NO METAL. ENGINE MEETS SERVICEABILITY CHECK IAW G.E. MM. GROUND RUN LEAK CHECK CHIP PLUG.

Part: BEARING — CHAFED (ENGINE AREA)

UNSCHEDULED MAINTENANCE, ENGINES REMOVED TO FACILITATE SHEET METAL REPAIRS TO LONGERON. FOUND BEARING BODY CHAFED BOTH SIDES BY CLEVIS.

Part: PYLON SUPPORT — CRACKED (PYLON RT)

THE RT PYLON SUPPORT IS CRACKED 14.50 INCHES FROM THE FORWARD TRANSMISSION ISLAND AFT. THE CRACK WAS DISCOVERED DURING REPLACEMENT OF THE RT CYCLIC SERVO. THE FOLLOWING COMPONENTS OF THE PYLON STRUCTURE WERE CRACKED: BEAM (W.O. 65.00). PYLON SUPPORT ASSY, RT. BULKHEAD (STA 227.10).

Part: BULKHEAD — CRACKED (FS 227.10)

THE RT PYLON SUPPORT IS CRACKED 14.50 INCHES FROM THE FORWARD TRANSMISSION ISLAND AFT. THE CRACK WAS DISCOVERED DURING REPLACEMENT OF THE RT CYCLIC SERVO. THE FOLLOWING COMPONENTS OF THE PYLON STRUCTURE WERE CRACKED: BEAM (W.O. 65.00). PYLON SUPPORT ASSY, RT. BULKHEAD (STA 227.10).

Part: BEAM — CRACKED (WL 65)

THE RT PYLON SUPPORT IS CRACKED 14.50 INCHES FROM THE FORWARD TRANSMISSION ISLAND AFT. THE CRACK WAS DISCOVERED DURING REPLACEMENT OF THE RT CYCLIC SERVO. THE FOLLOWING COMPONENTS OF THE PYLON STRUCTURE WERE CRACKED: BEAM (W.O. 65.00). PYLON SUPPORT ASSY, RT. BULKHEAD (STA 227.10).

Part: FIRE DET UNIT — FAULTY (NR 2 ELECT BAY)

WHILE IN LEVEL FLIGHT, NR 2 ENGINE FIRE LIGHT ILLUMINATED. PERFORMED CLEARING TURN TO CHECK FOR SMOKE. NO SMOKE WAS NOTED. FOLLOWED EMERGENCY CHECKLIST AND RETURNED TO BASE. TROUBLESHOT SYSTEM. FOUND FIRE CONTROL UNIT UNSERVICEABLE. REPLACED FIRE CONTROL UNIT.