N153QS

Part: PRESSURE SWITCH — INTERMITTENT (AUTOFEATHER) · airframe 1,014 hrs · 1,006 cycles

AFTER TAKE OFF, AT 300 FT, THE NR 2 PROPELLER AUTOFEATHERED, THE AUTOFEATHER WAS SELECTED OFF AND THE PROPELLER UNFEATHERED AND RETURNED TO NORMAL OPS. TORQUE WAS OBSERVED BY THE CREW DURING THE AUTOFEATHER AND THE THROTTLE WAS RETARDED TO PREVENT AN OVER TORQUE. NR 2 AUTOFEATHER PRESSURE SWITCH WAS REPLACED AND THE AIRCRAFT TESTED ON GROUND. THE SYSTEM WAS OPS CHECKED 6 TIMES AND NO DEFECTS WERE NOTED.

Part: BELLCRANK — LOOSE (RUDDER SYS) · airframe 980 hrs · 970 cycles

RUDDER TORQUE TUBE, BELL CRANK ATTACHMENT RIVETS AND BELL CRANK SHOWING SIGNS OF BEING LOOSE. ATTACH RIVETS ARE SMOKING.

Part: STRUCTURE — CRACKED (NLG)

THE ACFT FITTED WITH AMPHIB FLOATS HAD A NOSE GEAR FAILURE PREVIOUSLY AT 344.5 HRS. INITIAL FINDINGS OF THE FAILURE WERE THOUGHT TO BE FROM INTERGRANULAR CORROSION. NEW PARTS WERE FITTED AT THAT TIME. AT AFTT 422.6, JULY 2, 2015 THE NOSE GEARS WERE REMOVED AS AN INTERNAL COMPANY INSPECTION TO ENSURE THAT THE ACFT IS BEING INSPECTED TO A SUPERIOR STANDARD. ONCE THE LT NOSE GEAR WAS REMOVED, DISASSEMBLED AND CLEANED, IT WAS FOUND THAT THE SAME PART THAT PREVIOUSLY FAILED WAS FOUND TO BE CRACKED IN SEVERAL PLACES AND IF NOT FOUND WOULD HAVE LEAD TO A NOSE GEAR FAILURE.

Part: LIMIT SWITCH — FAILED (SPEED BRAKES) · airframe 1,450 hrs · 1,365 cycles

FLIGHT CREW REPORTED SPEED BRAKES WOULD NOT DEPLOY ON DESCENT GOING THROUGH 9000 FT AT 250 KIAS. SPEED BRAKES EVENTUALLY DEPLOYED AFTER CYCLING SPEED BRAKE CONTROL SWITCH SEVERAL TIMES. TROUBLESHOT SYS, FOUND HIGH INTERNAL RESISTANCE IN THE S156 SPEED BRAKE RETRACT LIMIT SWITCH. REPLACED THE S156 SWITCH WITH A NEW SWITCH, SPEED BRAKE SYS CHECKS IAW SERIES MM 27-60-00 WERE OK, NO FAULTS NOTED. RECOMMEND AIRFRAME MFG INVESTIGATE WHETHER AN ISOLATED FAULT, OR IF THERE MIGHT BE A PROBLEM WITH A SPECIFIC LOT OF SWITCH ASSY.

Part: WARNING LIGHT — MALFUNCTIONED (MLG HANDLE) · airframe 962 hrs · 915 cycles

UPON GEAR RETRACTION THE RED LIGHT IN THE GEAR HANDLE REMAINED ON AND THE GREEN LIGHT IN THE NOSE INDICATOR REMAINED ON.

Part: INDICATOR — MALFUNCTIONED (MLG) · airframe 962 hrs · 915 cycles

UPON GEAR RETRACTION THE RED LIGHT IN THE MLG HANDLE REMAINED ON & GREEN LIGHT IN THE NOSE INDICATOR REMAINED ON. THERE WAS ALSO ABNORMAL WIND NOISE & VIBRATON IN RUDDER PEDALS. MLG EXTENDED & INDICATED NORMAL LANDING. EXTENDED & INDICATED NORMAL. LANDING NORMAL. PLACED ACFT ON JACKS DISCONNECTED BOTH NLG DOORS TO INSPECT NLG MECHANISM NO DISCREPANCY NOTED. CYCLED MLG SYS SEVERAL TIMES & DURING OPS CHECK OF NLG SYS VERIFIED PROPER ENGAGEMENT OFF UPLOCK & DOWNLOCK SWITCHES, SWITCHED CHECKED GOOD. REINSTALLED DOORS AND PERFORMED FINAL OPS CHECK OF NLG SYS. CHECKED LOWER NLG STRUT FOR PROPER PSI, ALL CHECKS OF THE NLG SYSTEM CHECKED GOOD AT THIS TIME. ALL WORK DONE IAW MM 32-00-00.

Part: UNKNOWN — MALFUNCTIONED (BRAKE SYSTEM) · airframe 915 hrs · 864 cycles

COPILOTS (RT SIDE) WHEEL BRAKES ARE NOT EFFECTIVE FOR THE FIRST 2 TO 3 INCHES OF TRAVEL. WHEN REAPPLIED, BRAKING IS NORMAL. AFTER 5 OR 10 SECONDS OF TAXI, PROBLEM REOCCURS. OPERATED BRAKES ON BOTH PILOTS AND COPILOTS SIDE SET PARKING BRAKE NORMAL ON BOTH SIDES COULD NOT GET ANY PEDALS TO TRAVEL MORE THAN NORMAL ALL RADIUS ARE NORMAL WITH ANTI SKID ON ON OR OFF COULD NOT DUPLICATE. OPS CHECK SATISFACTORY IAW MM 6L 32-40-00.

Part: UNKNOWN — MALFUNCTIONED (BRAKE SYSTEM) · airframe 915 hrs · 864 cycles

COPILOTS (RT SIDE) WHEEL BRAKES ARE NOT EFFECTIVE FOR THE FIRST 2 TO 3 INCHES OF TRAVEL. WHEN REAPPLIED BRAKING IS NORMAL. AFTER 5 OR 10 SECONDS OF TAXI PROBLEM REOCCURS. OPERATED BRAKES ON BOTH PILOTS AND COPILOTS SIDE SET PARKING BRAKE NORMAL ON BOTH SIDES, COULD NOT GET ANY PEDALS TO TRAVEL MORE THAN NORMAL ALL RADIUS ARE NORMAL WITH ANTI SKID ON ON OR OFF COULD NOT DUPLICATE, OPS CHECK, YAW MM 6L 32-40-00.

Part: YOKE — LOCKED (COCKPIT) · airframe 750 hrs · 705 cycles

IN FLIGHT W/SPOILERS DEPLOYED, AC PITCHED FWD, YOKE LOCKED UP AND ROLL AUTHORITY WAS LOST UNTIL SPOILERS WERE STOWED. INSPECTED SPOILERS AND SPOILER CABLES, NO DEFECTS NOTED. DEPLOYED SPOILERS WITH HYDRAULIC POWER AND CHECKED YOKE FOR FREEDOM OF MOVEMENT, CHECKS GOOD. INSPECTED PITCH TRIM AND ROLL BOTH OPERATE NORMALY. ALL WORK IAW MM 27-60-00, 27-10-00.

Part: BUMPER BLOCK — DAMAGED (NLG) · airframe 653 hrs · 618 cycles

UPON LANDING GEAR RETRACTION, THE 3 GREEN LIGHTS EXTINGUISHED BUT THE RED GEAR HANDLE UNSAFE LIGHTS REMAINED ILLUMINATED. REMOVED EXCESS MATERIAL FROM RUBBER NOSE GEAR BUMPERS IN NOSE WHEEL WELL. OPERATIONAL CHECK NOW SATISFACTORY. CYCLED GEAR & CHECKED NOSE GEAR UPLOCK SWITCH ADJUSTMENT. CHECKS GOOD IAW MM CH 32-30-00. SERVICED HYD RESERVOIR.

Part: WIRE — DAMAGED (HORIZONTAL STAB) · airframe 578 hrs · 555 cycles

H-STAB FAIL ANNUNCIATOR LIGHT ILLUMINATED IN FLIGHT. TROUBLESHOT SYSTEM FOUND TOO LARGE OF AN OHM SPLIT AT C/P 473 OF CONTROLLER, TRACED WIRING BACK TO TB061 STILL HAD LARGE SPLIT OHM DIFFERENCE. REMOVED LT STAB LEADING EDGE, REPAIRED CONNECTIONS AT TB060 AND OHMED FROM C/P 473 NOW 198.4 ON BOTH SENSE WIRES AT 67.5 DEGREES. REINSTALLED LT STAB LEADING EDGE AND VERTICAL STAB KNEE CAP PANEL. OPERATED SYSTEM SEVERAL TIMES. OPERATES NORMAL. ALL WORK DONE PER 400XP MM 30-12-00

Part: BEARING — WORN (NLG) · airframe 535 hrs · 515 cycles

AFTER TAKEOFF, NOSE GEAR WOULD NOT RETRACT. REMOVED NOSE GEAR. DISASSEMBLED AND INSPECTED. REPLACED NLG LOWER BEARING WITH NEW BEARING P/N 128-350042-1, SCRAPER RING WITH EW RING P/N 2145-24-0160 AND ALL INTERNAL AND EXTERNAL SEALS. SERVICED AND REINSTALLED STRUT. PERFORMED RETRACTION TEST. ALL TEST SATISFACTORY ALL WORK PERFORMED IAW MM 12-10, 32-20 CMM 32-23.

Part: ENGINE — POWER LOSS (NR 1) · airframe 30 hrs · 33 cycles

NR 1 ENGINE WOULD NOT MAKE TAKEOFF THRUST AT FIREWALL.

Part: TRANSDUCER — INOPERATIVE (HYD SYSTEM) · airframe 18 hrs · 19 cycles

HYDRAULIC PRESSURE GAUGE INDICATED 0 PSI IN FLIGHT. VARIED BETWEEN 0 AND 1000 PSI THEN WENT TO 0 PSI FOR THE REMAINDER OF THE FLIGHT. REMOVED AND REPLACED HYDRAULIC PRESSURE TRANSDUCER. AND CONNECTOR PLUG FOR PRESSURE TRANSDUCER (P339) IAW MM 29-30-00. OPS CHECKED GOOD. LEAK CHECKED GOOD.

Part: UNKNOWN — UNKNOWN (BRAKE ASSY) · airframe 17 hrs · 18 cycles

BRAKE PEDALS FEEL SPONGY ON LT AND RT SIDE. BRAKES DO STOP AIRCRAFT BUT TAKE EXCESSIVE AMOUNT OF TRAVEL. BLEED BRAKES REF MM 32-40-00. NO DEFECT NOTED. TAXIED AIRCRAFT AND TESTED BRAKING SYSTEM. NO DEFECT NOTED. PEDALS FUNCTION NORMALLY AT THIS TIME.