N709AL

Part: CONDUIT — CORRODED

CORROSSION ON CONDUIT FOUND DURING CLEAN UP.

Part: LONGERON — CORRODED (UNKNOWN)

LONGERON CORRODED BEYOND LIMITS.

Part: GOVERNOR — LOOSE (NR 2 ENGINE) · airframe 27,290 hrs

NR 2 ENGINE FAILED POWER CHECK. TIGHTENED NR 2 GOVERNOR AND RESEATED NR 2 HEATER VALVE. SUBSEQUENT POWER CHECK AT +2.

Part: SUPPORT — CORRODED (ZONE 100) · airframe 26,698 hrs

SUPPORT PITTING CORROSION BEYOND LIMITS.

Part: ENGINE — POWER LOSS (NR 2) · airframe 26,349 hrs · 28,059 cycles

ON APPROACH NR 2 ENGINE LOST POWER AND WENT HOT, THEY TRIED TO MAKE A GO AROUND. THEY HAD TO LAND DUE TO THE A/C MAKING NOISES. ACFT LANDED SAFELY.

Part: CONNECTOR — SHORTED (FIRE HANDLE) · airframe 25,823 hrs

IN CRUISE FLIGHT, NR 2 ENGINE FIRE T-HANDLE ILLUMINATED WITH AUDIBLE TONE. MX REPLACED NR 2 ENGINE FLAME DETECTOR AND CONNECTOR.

Part: DOWNLOCK SENSOR — OUT OF ADJUST (RT MLG)

LANDING GEAR UNLOCKED LIGHT ILLUMINATED WHEN THE GEAR WAS EXTENDED. MAITENANCE ADJUSTED THE DOWN LOCK PROXIMITY SENSOR FOR THE RT MAIN LANDING GEAR. (K)

Part: WARNING LIGHT — ILLUMINATED (MLG)

WHILE ON APPROACH TO LANDING, LANDING GEAR WAS PLACED IN THE DOWN POSITION. SYSTEMS INDICATED THE LANDING GEAR WAS NOT SECURE. RETURNED TO BASE AND NOTIFIED MAINTENANCE. (K)

Part: PUMP — FAILED (NR 2)

AIRCRAFT RUNNING ON THE PLATFORM. THE NR 2 HYDRAULIC FAILED WHILE THE AIRCRAFT WAS ON THE PLATFORM, MAINTENANCE WAS NOTIFIED. THE MECHANIC REMOVED AND REPLACED THE NR 2 HYDRAULIC PUMP DUE TO A SHEERED SHAFT, GROUND RUN WAS PERFORMED AND AIRCRAFT WAS RETURNED TO SERVICE.(K)

Part: RELAY — FAILED (FIRE EXTING)

ON PRE-FLIGHT, THE FIRE EXTINGUISHER SYSTEM FAILED. MAINTENANCE WAS INFORMED AND THE MECHANIC REMOVED AND REPLACED THE K2 RELAY IN THE NR 1 RELAY IN THE OVERHEAD PANEL IAW MM. THE AIRCRAFT WAS RETURNED TO SERVICE.(K)

Part: OIL COOLER — MALFUNCTIONED (NR 2 ENGINE)

SHORTLY AFTER TAKE OFF, DURING CLIMB OUT NR 2 ENGINE OIL TEMP EXCEDED REDLINE. AIRCRAFT RETURNED TO CREOLE, TEMPERATURE REACHED 115 DEGREES FOR 10 MINUTES, THE MECHANIC CHECKED CHIP PLUGS AND REPLACED THE ENGINE OIL, THERMOSTAT AND OIL COOLER AND HE CHECKED THE ENGINE INTERNAL OIL FILTER.

Part: LANDING GEAR — MALFUNCTIONED (MAIN)

AFTER TAKEOFF, THE LANDING GEAR FAILED TO RETRACT. PERFORMED FUNCTION CHECK OF THE LANDING GEAR AND COULD NOT DUPLICATE. THE LANDING GEAR WAS EXTENDED AND RETRACTED APPROXIMATELY 13 TIMES AND FUNCTIONED NORMALLY.

Part: GEAR — CORRODED (PTO GEAR)

UPON REMOVAL FROM BOX AND VISUAL INSPECTION, FOUND CORROSION PITTING ON GEAR SURFACE, GEAR TEETH, AND BEARING JOURNAL. C/W BLACK OXIDE PROCEDURE AT FACTORY BEFORE RELEASING PART.

Part: PINION GEAR — SPALLED (GEARBOX)

UPON INSPECTION OF GEARBOX PARTS, LIGHTS SPALLING AND GALLING ON PINION GEAR TEETH CAUSING LIGHT SPALLING ON T/M GEAR GEARTEETH. (M)

Part: BEARING — FAILED (NLG)

DURING RETRACTION TEST OF LANDING GEAR, NOSE STRUT PISTON WOULD NOT EXTEND COMPLETELY WITH AIRCRAFT ON JACKS. WHEEL WOULD CENTER 180 DEGREES FROM NORMAL CENTER. (WHEEL AND FORK ASSY WOULD CENTER BACKWARDS). LOWER BEARING, PN 1944E9A, MOUNTING FLANGE BOLT HOLES DRILLED 180 DEGREES OUT OF INDEX WITH BEARING CENTERING CAM LOBE. (X)

Part: DOUBLER — CORRODED (STABILIZER)

DURING SCHEDULED MAINTENANCE, FOUND STABILIZER DOUBLER WITH EXCESSIVE CORROSION. COMPONENT P/N 7600006003011.

Part: SPAR RIB — CORRODED (STABILIZER)

DURING SCHEDULED MAINTENANCE, FOUND STABILIZER SPAR RIB WITH EXCESSIVE CORROSION. COMPONENAT P/N 7600006003011.

Part: TIP CAP — CORRODED (STABILIZER)

DURING SCHEDULED MAINTENANCE, FOUND STABILIZER INSTALLATION WITH EXCESSIVE CORROSION.

Part: LONGERON — CORRODED (LT STABILIZER)

DURING SCHEDULED MAINTENANCE, FOUND LT STABLIZER LONGERON WITH EXCESSIVE CORROSION.

Part: RIB — CORRODED (STABILIZER)

DURING SCHEDULED MAINTENANCE, FOUND STABILIZER RIB WITH EXCESSIVE CORROSION. COMPONENT P/N 7600006003011.

Part: PUMP — SHAFT SHEARED (HYDRAULIC)

DURING LEVEL FLIGHT, NR 2 HYDRAULIC PRESSURE GAUGE DROPPED TO ZERO, NO NOISE WAS HEARD, AIRSPEED WAS REDUCED TO 80 KNOTS. LANDING GEAR HANDLE WAS MOVED TO THE EXTEND POSITION. GEAR DID NOT EXTEND. EMERGENCY CHECK LIST WAS UTILIZED TO EXTEND GEAR. LANDING GEAR EXTENDED AND LANDED WITHOUT FURTHER INCIDENT. INSPECTED AIRCRAFT, FOUND NR 2 FILTER BYPASS BUTTON POPPED ON HYDRAULIC MODULE. FLUID LEVEL INDICATED FULL. REMOVED NR 2 HYDRAULIC PUMP, FOUND SHAFT SHEARED, REPLACED PUMP. REMOVED AND REPLACED NR 2 HYDRAULIC MODULE. SERVICED SYSTEM AND PURGED AIR FROM SYSTEM. GROUND RUN, LEAK CHECK, PINNED LANDING GEAR.

Part: MODULE — BYPASS TRIPPED (HYDRAULIC)

DURING LEVEL FLIGHT, NR 2 HYDRAULIC PRESSURE GAUGE DROPPED TO ZERO, NO NOISE WAS HEARD, AIRSPEED WAS REDUCED TO 80 KNOTS. LANDING GEAR HANDLE WAS MOVED TO THE EXTEND POSITION. GEAR DID NOT EXTEND. EMERGENCY CHECK LIST WAS UTILIZED TO EXTEND GEAR. LANDING GEAR EXTENDED AND LANDED WITHOUT FURTHER INCIDENT. INSPECTED AIRCRAFT, FOUND NR 2 FILTER BYPASS BUTTON POPPED ON HYDRAULIC MODULE. FLUID LEVEL INDICATED FULL. REMOVED NR 2 HYDRAULIC PUMP, FOUND SHAFT SHEARED, REPLACED PUMP. REMOVED AND REPLACED NR 2 HYDRAULIC MODULE. SERVICED SYSTEM AND PURGED AIR FROM SYSTEM. GROUND RUN, LEAK CHECK, PINNED LANDING GEAR.

Part: PTO GEAR — CRACKED (GEARBOX)

4-24-95 - RECEIVED GEARBOX FROM A/C N709AL-PTN WITH PTO GEAR CRACKED. CONDITION - FOUND PTO GEAR CRACKED AT FWD END ABOVE SPLINED AREA. SUSPECT OVERTORQUE ON OUTPUT SHAFT.

Part: SHAFT — WORN (SPLINES)

REMOVED AT ENGINE CHANGE. OIL COOLER BLOWER SHAFT SPLINES WORN EXCESSIVELY.

Part: BLADE — CRACKED (M/R)

DURING 500-HOUR INSPECTION, FOUND CRACK IN SPAR ORIGINATING FROM BUSHING HOLE. COMPONENT P/N 7600009300013.

Part: BLADE — CRACKED (M/R)

DURING 500-HOUR INSPECTION, FOUND CRACK IN SPAR ORIGINATING FROM ROOT END BUSHING HOLE. COMPONENT P/N 7600009300013.

Part: STRUT — DAMAGED (ENGINE DECK)

DURING 1,500 HOUR INSPECTION, FOUND STRUT WITH MECHANICAL DAMAGE. PART UNSERVICEABLE.

Part: MOUNT — CHAFED (ENGINE DECK)

DURING 1500 HOUR INSPECTION, FOUND ENGINE MOUNT CHAFED BEYOND LIMITS, DAMAGED WHEN RIVETS INSTALLED.

Part: MOUNT — CRACKED (ENGINE DECK)

DURING 1500 HOUR INSPECTION, FOUND ENGINE MOUNT HAS A SMALL CRACK, NOT SERVICEABLE, DEFECTIVE WELD.

Part: SHAFT — WORN (COOLER BLOWER)

DISCOVERED AT ENGINE CHANGE, OIL COOLER BLOWER SPLINES WORN EXCESSIVELY. SUSPECT CAUSE - WHEN INSTALLED ON ENGINE, SPLINES WERE INSTALLED WITH GREASE. THE GREASE BLOCKED ENGINE OIL PASSAGE IN GEARBOX CAUSING LOSS OF LUBRICATION ON WET SPLINES.