N519AL

Part: CHIN BUBBLE — CRACKED (ZONE 100) · airframe 14,694 hrs

RIGHT CHIN BUBBLE CRACKED, REMOVED AND REPLACED.

Part: PISTON — ERODED (ZONE 200) · airframe 13,623 hrs

SERVO LOCKED UP 4 TIMES ON FUNCTIONAL CHECK ON HYD BENCH. FOUND PLASMA COATING BROKE OFF SYS 1 AND 2 PISTONS. PLASMA WAS FOUND IN BOTH SYS BYPASS SPOOL, SLEEVES, AND PRIMARY CONTROL VALVES.

Part: PISTON — ERODED (ZONE 200) · airframe 13,797 hrs

SERVO LOCKED UP FOUR TIMES ON FUNCTIONAL CHECK ON HYD BENCH. FOUND PLASMA COATING BROKE OFF SYS 1 AND 2 PISTONS. PLASMA WAS FOUND IN BOTH SYS BYPASS SPOOL, SLEEVES, AND PRIMARY CONTROL VALVES.

Part: COVER — DEBONDED (T/R DRIVE SHAFT) · airframe 17,172 hrs

FOUND PADDLE "A" TIP WEIGHT COVER DEBONDED AND MOISTURE INGRESS IN WEIGHT POCKET.

Part: FLOOR PANEL — CORRODED (ZONE 100) · airframe 13,972 hrs

FOUND PILOTS FLOOR PANEL CORRODED, PN 7620402006-048, SN 16100711.

Part: FLOOR PANEL — CORRODED (ZONE 100) · airframe 13,972 hrs

FOUND FLOOR PANEL CORRODED.

Part: FLOOR PANEL — CORRODED (ZONE 100) · airframe 13,972 hrs

FOUND CO-PILOTS FLOOR PANEL CORRODED.

Part: FLOOR PANEL — CORRODED (ZONE 100) · airframe 13,972 hrs

FOUND FLOOR PANEL CORRODED.

Part: FLOOR PANEL — CORRODED (ZONE 100) · airframe 13,972 hrs

FOUND FLOOR PANEL CORRODED.

Part: EXPLOSIVE LINK — OUT OF ADJUST (LG)

ON TAKEOFF, LANDING GEAR WAS RETRACTED, 3 GREEN LIGHTS WENT OUT, AND RED UNLOCKED LIGHT ILLUMINATED. MAINTENANCE ADJUSTED LT MAIN GEAR EXPLOSIVE LINK, APPLIED HYDRAULICS, AND CYCLED LANDING GEAR SEVERAL TIMES. OPS CHECK GOOD. (K)

Part: INVERTER — FAILED (NR 1)

ON TAKEOFF, HP1 AND HP2 WENT OFF LINE. REPLACED NR 1 INVERTER WITH SERVICEABLE UNIT. AIRCRAFT OPS CHECK GOOD. (K)

Part: SEAL — LEAKING (STARTER GEN)

AFTER LANDING, OIL WAS OBSERVED ON MAIN GEAR AND TAILBOOM. REPLACED GEARBOX SEAL (STARTER/ GENERATOR) AND OIL RING ON STARTER/GENERATOR. ALL WORK C/W ICW C-30 MM. (K)

Part: FUEL FILTER — FAILED (NR 1)

AFTER TAKEOFF, FUEL PRESSURE DROPPED TO 4 PSI. RETURNED TO BASE AND NOTIFIED MAINTENANCE. MAINTENANCE REPLACED NR 1 FUEL FILTER. GROUND RUN AND OPS CHECK GOOD IAW MM. (K)

Part: BATTERY — INOPERATIVE (MASTER)

DURING FLIGHT, BATTERY HOT AND BATTERY OFF LIGHT ILLUMINATED. EMERGENCY CHECKLIST CONSULTED, TURNED BATTERY SWITCH OFF AS A PRECAUTION. PROCEEDED FOR MAINTENANCE. MAINTENANCE REMOVED BATTERY AND INSTALLED SERVIEABLE BATTERY. THE OPS CHECK WAS GOOD AND SET VOLTAGE REGULATOR. (K)

Part: VALVE — LEAKING (MLG)

WHILE HOVERING OUT FOR TAKEOFF, NOTICED HYDRAULIC FLUID ON THE HELIPAD. RETURNED TO PAD TO INVESTIGATE AND SHUTDOWN HELICOPTER AND THEN CONTACTED MAINTENANCE. MAINTENANCE FOUND LANDING GEAR VALVE BUTTON POPPED. RESET THE BUTTON AND COMPLIED WITH LANDING GEAR OPERATIONAL CHECK AND LEAK CHECK. THE OPS CHECK WAS GOOD AND NO LEAKS COULD BE FOUND. WORK WAS DONE IAW MM. (K)

Part: WIRE — BROKEN (MLG)

UPON PERFORMING THE T/O CHECK LIST, BOTH CREW MEMBERS NOTICED THAT THE LANDING GEARS WOULD NOT ACTUATE TO THE UP POSITION. CHECKED THE CIRCUIT BREAKERS AND RECYCLED LANDING GEAR, STILL IN THE LOCKED DOWN POSITION, RETURNED TO BASE WITH LESS THAN 130 KNOTS. MAINT REPAIRED BROKEN WIRE AT X1 OF RELAY K30 IN NR 1 OVERHEAD RELAY PANEL. AC PLACED ON JACKS AND GEAR WAS SWUNG AND WAS CHECKED GOOD. (K)

Part: GEAR — SPALLED (FUSELAGE TOP) · airframe 9,851 hrs

FOUND SPALLING AND GALLING ON PINION GEAR TEETH. SENT TO VENDOR FOR WARRANTY CREDIT.

Part: AMPLIFIER — INOPERATIVE (FIRE DETECTOR)

FIRE WARNING LIGHT ON NR 2 ENGINE ILLUMINATED. NO FIRE WAS SEEN. MAINTENANCE REMOVED AND REPLACED FIRE DETECTOR CONTROL AMP.

Part: ENGINE — MAKING METAL (NR 2)

IN FLIGHT, NR 2 ENGINE CHIP LIGHT CAME ON. MAINTENANCE FOUND METAL ON FWD PLUG ON NR 2 ENGINE. SMALL RING OF TINY FLAKES ON OUTSIDE PERIMETER OF CHIP PLUG. AIRCRAFT AOG FOR ENGINE.

Part: SEAL — LEAKING (T/R GEARBOX) · airframe 7,321 hrs

MULTIPLE INPUT SEALS LEAKING WHEN RUN-UP ON TEST STAND. REPLACED SEALS WITH NEW.

Part: HYDRAULIC SYSTEM — LOW (NR 1)

IN CRUISE FLIGHT PILOT NOTICED A KICK IN THE FLIGHT CONTROLS AND A SLIGHT FLUCTUATION IN NR 2 HYDRAULIC GAUGE THIS WAS FOLLOWED BY CHATTERING IN THE CYCLIC CONTROL, AIRCRAFT RETURNED TO BASE AND UPON INSPECTION MECHANIC DISCOVERED THE NR 1 HYDRAULIC SYSTEM WAS LOW, SERVICED THE NR 1 HYDRAULIC SYSTEM AND AIRCRAFT WAS RETURNED TO SERVICE.

Part: CONTROL PANEL — INOPERATIVE (MLG)

DURING LANDING, THE LANDING GEAR WARNING HORN WENT ON AND STAYED ON WITH THE GEAR DOWN AND LOCKED (3 GREEN LIGHT). UPON LANDING THE LANDING GEAR WAS PINNED IAW MEL AND LOGBOOK ENTRY WAS MADE. SUBSEQUENT INSPECTION REVEALED BROKEN WIRE NR LGW503R20 AT PIN (2) NR 1 OVERHEAD RELAY PANEL TO THE DIODE BRIDGE, THE WIRE WAS REPAIRED AND AIRCRAFT RETURNED TO SERVICE.

Part: RELAY — FAULTY (EXTINGUISH SYS)

DURING PRESTART CHECK OF THE ENGINE FIRE EXTINGUISHING SYSTEM, BOTTLE FIRED DURING TEST, RELAY COIL FOUND FAULTY.

Part: RELAY — FAULTY (EXTIGUISHING SYS)

DURING PRESTART CHECK OF THE ENGINE FIRE EXTINGUISHING SYSTEM. BOTTLE FIRED DURING TEST, RELAY COIL WAS FOUND FAULTY.

Part: SUPPORT BRACKET — BROKEN (PILOTS CYCLIC)

DURING COMPLIANCE OF ASB 76-67-44, FOUND CYCLIC SUPPORT NOT TO BE THE CORRECT CONFIGURATION. (X)

Part: WARNING LIGHT — ILLUMINATED (MLG) · airframe 6,984 hrs

BEFORE LANDING, UNSAFE GEAR INDICATION, (LEFT MAIN, NO GREEN, RED STAYED ON). RECYCLED GEAR AND ALL GREEN LIGHTS ILLUMINATED. VISUALLY CHECKED GEAR AND SWITCHES. NO DEFECTS WERE NOTED. (X)

Part: BEEP MOTOR — FAILED (NR 2 ENGINE)

AFTER LEVELING OFF AT 3,500 FEET, A LARGE TORQUE SPLIT WITH NR 2 ENGINE DROPPING TO 61 PERCENT N1 - T5 450 DEGREES TORQUE 30 PERCENT, COLLECTIVE WAS REDUCED TO CONTROL TORQUE AND T5 ON ENGINE NR 1 AND MAINTAINED LEVEL FLIGHT. DIVERTED FOR LANDING. REPLACED GOVERNOR AND BEEP MOTOR AND TORQUE SHAFT.

Part: GOVERNOR — FAILED (NR 2 ENGINE)

AFTER LEVELING OFF AT 3,500 FEET, A LARGE TORQUE SPLIT WITH NR 2 ENGINE DROPPING TO 61 PERCENT N1 - T5 450 DEGREES TORQUE 30 PERCENT, COLLECTIVE WAS REDUCED TO CONTROL TORQUE AND T5 ON ENGINE NR 1 AND MAINTAINED LEVEL FLIGHT. DIVERTED FOR LANDING. REPLACED GOVERNOR AND BEEP MOTOR AND TORQUE SHAFT.

Part: TORQUE SHAFT — FAILED (NR 2 ENGINE)

AFTER LEVELING OFF AT 3,500 FEET, A LARGE TORQUE SPLIT WITH NR 2 ENGINE DROPPING TO 61 PERCENT N1 - T5 450 DEGREES TORQUE 30 PERCENT, COLLECTIVE WAS REDUCED TO CONTROL TORQUE AND T5 ON ENGINE NR 1 AND MAINTAINED LEVEL FLIGHT. DIVERTED FOR LANDING. REPLACED GOVERNOR AND BEEP MOTOR AND TORQUE SHAFT.

Part: ADI — MALFUNCTIONED (E/E BAY)

DURING CLIMB-OUT, SMOKE WAS NOTICED IN THE COCKPIT. FOUND COPILOT'S ADI DEFECTIVE. REMOVED AND INSTALLED SERVICEABLE UNIT.