AZTEC WORLDWIDE AIRLINES INC

Operated by AZTEC WORLDWIDE AIRLINES INC (per NTSB report)

Operated by AZTEC WORLDWIDE AIRLINES INC (per NTSB report)

The collapse of the left main landing gear for reasons that could not be determined.

Part: ENGINE — ABNORMAL · airframe 22,512 hrs · 35,744 cycles

ENGINE CHIP DETECTOR LIGHT ILLUMINATED IN FLIGHT,. LOW OIL PRESSURE LIGHT ILLUMINATED, LOW OIL PRESSURE INDICATED. POST-FLIGHT, REMOVED OIL SCREEN AND FOUND METAL CONTAMINATION

Part: FUEL CAP — INSTALLED (ZONE 500)

PILOT DEPARTED WITH WATER IN FUEL; DUE TO FUEL TANK CAP IMPROPERLY SECURED, AND HEAVY RAIN

Part: O-RING — DAMAGED (HYD FILTER) · airframe 19,644 hrs

LANDING GEAR WILL NOT LOCK ON EXTENSION. MANUALLY PUMPED GEAR DOWN AND LOCKED WITH THREE GREEN LIGHTS. WE FOUND THE RH ENGINE HYDRAULIC FILTER RESERVOIR LEAKING FROM THE O-RING. REMOVED HYDRAULIC FILTERS VERIFIED NO CONTAMINANTS AND REPLACED O-RING. THE HYDRAULIC SYSTEM WAS SERVICED WITH 400 ML OF 5606. AFTER ENGINE RUNS, SERVICE HYDRAULIC SYSTEM ADDITIONAL 50ML 5606 AND NO LEAKS NOTED.

Part: MAGNETO — INTERMITTENT (LT ENGINE) · airframe 19,599 hrs

LEFT ENGINE LOST POWER 25 MILES FROM FXE: RAN THE LEFT ENGINE, DURIN MAGNETO CHECK ON LH MAGNETO ENGINE LOST POWER, ON BOTHMAGNETO'S (DUAL MAGNETO SET UP) RAN GOOD FOR ABOUT FIVE MINUTES, LOST POWER AND CONTINUED THAT WAY, FUALT WAS CONFIRMED ON THE MAGENTO. REPLACED MAGNETO AND PROBLEM WAS RESOLVED. MAGNETO ONLY HAD 110.6 HOURS SINCE 500 HOUR INPECTION / REPAIR. THE FUEL SYSTEM AND IGNITION HARNESS WAS ALSO INSPECTED NO FAULTS, SPARK PLUGS INSOECTED AND CLEANED NO FUALTS, CONTOLLERS FLUSHED NO FAULTS, OIL FILTER WAS REMOVED AND INSPECTED NO FAULTS. NEW OIL FLITER INSTALLED. INSPECTED FUEL CAPS AND FUEL SUMPED NO WATER, FUEL CAPS INSPECTED NO FAULTS, COMPRESSION CHECKED AND FOUND #2 COMPRESSION LOW, REPLACED CYLINDER.

Part: MAGNETO — INTERMITTENT (LEFT ENGINE) · airframe 19,599 hrs

LEFT ENGINE LOST POWER 25 MILES FROM FXE: RAN THE LEFT ENGINE, DURIN MAGNETO CHECK ON LH MAGNETO ENGINE LOST POWER, ON BOTHMAGNETO'S (DUAL MAGNETO SET UP) RAN GOOD FOR ABOUT FIVE MINUTES, LOST POWER AND CONTINUED THAT WAY, FUALT WAS CONFIRMED ON THE MAGENTO. REPLACED MAGNETO AND PROBLEM WAS RESOLVED. MAGNETO ONLY HAD 110.6 HOURS SINCE 500 HOUR INPECTION / REPAIR. THE FUEL SYSTEM AND IGNITION HARNESS WAS ALSO INSPECTED NO FAULTS, SPARK PLUGS INSOECTED AND CLEANED NO FUALTS, CONTOLLERS FLUSHED NO FAULTS, OIL FILTER WAS REMOVED AND INSPECTED NO FAULTS. NEW OIL FLITER INSTALLED. INSPECTED FUEL CAPS AND FUEL SUMPED NO WATER, FUEL CAPS INSPECTED NO FAULTS, COMPRESSION CHECKED AND FOUND #2 COMPRESSION LOW, REPLACED CYLINDER.

Part: TUBE — PUNCTURED (TIRE) · airframe 1,153 hrs · 1,297 cycles

ON LANDING ROLLOUT THE PILOT NOTED THE LEFT MAIN TIRE DEFLATED LATE IN THE ROLLOUT. A REPLACEMENT NEW TIRE AND TUBE WERE INSTALLED AND THE AIRCRAFT RETURNED TO THE MAIN BASE. FOLLOWING INSPECTION OF THE AIRCRAFT IT WAS RETURNED TO SERVICE. EVALUATION OF THE TIRE AND TUBE SHOWED A VERY MINOR PUNCTURE OF THE TUBE IN THE AREA OF THE INBOARD SIDEWALL. NO EVIDENCE WAS FOUND INSIDE THE TIRE OR THROUGH THE TIRE SIDEWALL THAT WOULD HAVE CONTRIBUTED TO THE PUNCTURE.

Part: ENGINE — MAKING METAL (RIGH) · airframe 16,557 hrs

THE AIRCRAFT WAS ENROUTE, THE PILOT NOTED A LOSS OF MANIFOLD PRESSURE FOLLOWED BY A LOSS OF RPM IN THE RT ENGINE. THE PILOT INITIATED AN ENGINE SHUTDOWN UPON NOTICING THE OIL PRESSURE DROPPING. THE ENGINE WAS SECURED AND THE FLIGHT ROUTED TO NASSAU FOR LANDING. A CREW WAS SENT TO INVESTIGATE THE ENGINE CONDITION. UPON INSPECTION AND OPERATION OF THE ENGINE IT WAS DETERMINED TO REMOVE THE ENGINE AT ITS LOCATION DUE TO METAL IN THE OIL FILTER AND CONSIDERABLE ABNORMAL ENGINE NOISE DURING RUNNING. NOTED THE NUMBER SIX PISTON INDICATED DAMAGE FROM DETONATION AND FURTHER TEARDOWN REVEALED IT HAD TWO BURNED CONNECTING ROD BEARINGS. EVALUATION IS CONTINUING TO DETERMINE IF AN INITIAL CAUSE OF FAILURE CAN BE ISOLATED.

Part: LANDING GEAR — COLLAPSED (LEFT) · airframe 17,864 hrs

AIRCRAFT WAS ON ROLLOUT DURING A NORMAL LANDING. THE LANDING GEAR INDICATED DOWN AND LOCKED. THE LANDING GEAR HANDLE HAD RETURNED TO NEUTRAL DURING THE LANDING GEAR EXTENSION PHASE. DURING ROLLOUT, THE LEFT MAIN LANDING GEAR COLLAPSED AND THE AIRCRAFT VEERED OFF THE RUNWAY. THE AIRCRAFT ROLLED INTO THE GRASS/DIRT AREA OFF THE RUNWAY DURING WHICH THE NOSE LANDING GEAR COLLAPSED. THE AIRCRAFT WAS REMOVED FROM THE RUNWAY AND RETURNED TO THE CARRIERS MAINTENANCE FACILITY. THE AIRCRAFT WAS PLACED ON JACKS AND INSPECTED. THERE WAS NO VISIBLE DAMAGE TO THE RETRACT/EXTENSION SYSTEM OR THE LANDING GEARS THEMSELVES. IT WAS DETERMINED THAT THE INNER LANDING GEAR DOORS WERE OPEN AT THE TIME OF THE LEFT LANDING GEAR COLLAPSE. THE RIGGING OF THE LANDING GEAR WAS CHECKED AND FOUND CORRECT PER THE AMM. THE LANDNG GEAR WAS OPERATED IN THE SHOP WITH NO INDICATION OF IMPROPER OPERATION. THE SYSTEM WAS REINSPECTED WITH NO DEFECTS NOTED. THE LANDING GEAR WAS ONCE AGAIN OPERATED ON THE JACKS WITH NO DEFECTS IN OPERATION FOUND. INSPECTION AND ANALYSIS IS ONGOING.

Part: HOUSING — FAILED (HYD FILTER) · airframe 11,380 hrs

THE LEFT SIDE HYDRAULIC SYSTEM FILTER BOWL ASSEMBLY SEPARATED FROM THE UPPER FILTER HOUSING DUE TO A FAILURE IN THE THREAD PORTION OF THE FILTER BOWL. NO STRESS ON THE BOWL COULD BE DETECTED AND THE REASON FOR THE FAILURE REMIANS UNKNOWN. FAILURE OF THE BOWL CAUSED A TOTAL LOSS OF HYDRAULIC FLUID INCLUDING THE RESERVE/EMGERGENCY PUMP SUPPLY. AT THIS TIME NO REASON HAS BEEN FOUND FOR THE LOSS OF FLUID IN THE EMERGENCY EXTENSION SYSTEM. THE NOSE LANDING GEAR FAILED TO LOCK IN THE DOWN POSITION DUE TO LOSS OF FLUID IN THE PRIMARY AND BACKUP/EMERGENCY SYSTEMS. INVESTIGATION FOR THE CAUSE OF THE EMERGENCY SYSTEM LOSS IS ON GOING. TOTAL TIME AND TOTAL CYCLES OF THE PART THAT FAILED IS NOT TRACKED.

Part: LANDING GEAR — MALFUNCTIONED (ZONE 700) · airframe 15,451 hrs

THE NOSE LANDING GEAR DID NOT EXTEND FULLY DURING APPROACH AS WAS SEEN BY THE INSPECTION MIRROR. THE PILOT ABORTED THE APPROACH AND IN TROUBLESHOOTING EXTENDED THE LANDING GEAR TO THE FULLY LOCKED POSITION WITH THE MANUAL EXTENSION HAND PUMP. THE LANDING GEAR HANDLE RETURNED TO NEUTRAL. THE PILOT STATED THAT USING NORMAL PROCEDURES, THE NOSE GEAR DID NOT EXTEND OR RETRACT AND THE GEAR HANDLE DID NOT RETURN TO NEUTRAL. THE LANDING WAS UNEVENTFUL. THE PLANE WAS REPOSITIONED WITH THE LANDING GEAR DOWN TO THE MAIN MAINTENANCE FACILITY. IN MAINTENANCE THE CONDITION COULD NOT BE REPRODUCED. THE LANDING GEAR WAS CHECKED FOR PROPER SERVICIGN AND INSPECTED WITH NO DEFECTS NOTED. THE AICRAFT WAS SENT FOR FLIGHT EVALUATION. THE PILOT REPORTED OPERATING THE LANDING GEAR BY NORMAL METHODS 12 CYCLES WITH NO ISSUES. THE AIRCRAFT WAS RETURNED TO SERVICE AND HAS PERFORMED WITHOUT INCIDENT. CYCLES ARE NOT TRACKED ON THIS AIRCRAFT.

Part: FUEL CAP — LOOSE (FUEL SYSTEM) · airframe 12,810 hrs

EN ROUTE FROM TPA TO BUY, PILOT NOTICED LOW FUEL INDICATION AND DIVERTED TO JAX AND LANDED SAFELY WITHOUT INCIDENT. PILOT DISCOVERED FUEL CAPS NOT SECURED PROPERLY. PILOT HAD THE AIRCRAFT TOPPED OFF WITH FUEL AND SECURED FUEL CAPS AND PROCEEDED TO BUY WITHOUT INCIDENT. MAINTENANCE IS INSPECTING FUEL CAPS.

Part: INJECTOR — PLUGGED (RT ENGINE) · airframe 14,491 hrs

JUST AFTER TAKEOFF FROM YIP, PILOT NOTICED POWER ON RIGHT ENGINE TO BE LOW AND WITH LOW READINGS ON THE EGT GAUGE. PILOT RETURNED AND LANDED SAFELY AT YIP WITHOUT INCIDENT. MAINTENANCE INSPECTED AND FOUND NR 2 AND NR 6 FUEL INJECTORS PLUGGED, MAINTENANCE CLEANED INJECTORS, COMPLIED WITH GROUND RUN AND OPERATIONAL CHECK NORMAL, NO FURTHER DEFECTS NOTED.

Part: STUD — BROKEN (RT ENGINE) · airframe 12,806 hrs

EN ROUTE FROM CLT TO ORL, APPROXIMATELY 90 MINUTES INTO THE FLIGHT THE RIGHT ENGINE STARTED BACKFIRING. THE PILOT PROCEEDED TO SHUT THE ENGINE DOWN AS A PRECAUTIONARY MEASURE AND DIVERTED TO SGJ AND LANDED SAFELY WITHOUT INCIDENT. MAINTENANCE INSPECTED AND FOUND ALL FOUR CYLINDER BASE MOUNTING STUDS ON RIGHT ENGINE NR 6 CYLINDER BROKEN. MAINTENANCE IS IN PROCESS OF REPAIRING ENGINE.

Part: TURBOCHARGER — DEFECTIVE (RT ENGINE) · airframe 14,460 hrs

ON CLIMBOUT OF BUY, PILOT NOTICED RIGHT ENGINE STARTED RUNNING ROUGH AND NOTICED DROP IN MANIFOLD PRESSURE. PILOT NOTIFIED TOWER AND PROCEEDED TO RETURN BACK AND LAND SAFELY AT BUY WITHOUT INCIDENT. MAINTENANCE INSPECTED AND REPLACED RIGHT ENGINE TURBO CHARGER, RUN UP AND OPERATIONAL CHECK NORMAL, NO FURTHER DEFECTS NOTED.

Part: DIPSTICK — UNSECURE (RT ENGINE) · airframe 14,391 hrs

SHORTLY AFTER TAKEOFF FROM FWA, PILOT NOTICED OIL STREAKING OUT OF RIGHT ENGINE. THE PILOT TURNED BACK AND LANDED SAFELY AT FWA WITHOUT INCIDENT. ONCE ON THE GROUND PILOT NOTICED RIGHT ENGINE OIL DIP STICK NOT SECURED. MAINTENANCE REPLACED DIP STICK, CLEANED AND SERVICED ENGINE, COMPLETED ENGINE RUN UP AND OPERATIONAL CHECK, NO FURTHER DEFECTS NOTED.

Part: UNKNOWN — LACK OF LUBE (LANDING GEAR) · airframe 12,652 hrs

RIGHT AFTER DEPARTURE FROM LCK, PILOT WAS UNABLE TO GET LANDING GEAR FULLY RETRACTED. PILOT PROCEEDED TO EXTEND GEAR BACK DOWN AND RETURN AND LANDED SAFELY AT LCK WITHOUT INCIDENT. MAINTENANCE COMPLETED OPERATIONAL GEAR SWING AND LUBRICATION, OPERATIONAL CHECK NORMAL NO FAULTS NOTED.

Part: TIRE — FAILED (MLG) · airframe 14,153 hrs

ON LANDING, PILOT NOTICED TWO FLAT MAIN TIRES, MAINTENANCE REPLACED BOTH MAIN TIRES, NO OTHER DEFECTS NOTED.

Part: PUMP — FAILED (HYD SYSTEM) · airframe 9,108 hrs

CREW DECLARED EMERGENCY AND DIVERTED, EN ROUTE. DIVERSION WAS DUE TO LANDING GEAR NOT LOCKING IN UP POSITION. ONLY CREW OF 1 ON BOARD. PILOT USED HAND PUMP IAW FLIGHT MANUAL AND WAS ABLE TO EXTEND GEAR, AND HAD DOWN AND LOCKED INDICATION. ACFT LANDED WITHOUT FURTHER INCIDENT. POST FLIGHT INSPECTION REVEALED RT ENGINE DRIVEN HYD PUMP HAD FAILED. PART HAD 126 HOURS SINCE O/H. UNIT RETURNED TO O/H FACILITY FOR INSPECTION. INSPECTION REVEALED PLATE AND GEAR FAILURE. UNIT PERMANENTLY REMOVED FROM SERVICE AS REPLACEMENT PARTS ARE NO LONGER AVAILABLE.

Part: UPLOCK HOOK — LACK OF LUBE (RT MLG) · airframe 12,442 hrs

AFTER DEPARTING BUY TO CPK PILOT SELECTED GEAR UP BUT THE GEAR DID NOT GO UP ALL THE WAY, PUT GEAR BACK DOWN AND RETURNED TO BUY. MAINTENANCE FOUND THE RIGHT GEAR UPLOCK HOOK NOT ENGAGING ALL THE WAY. CLEANED AND LUBED UPLOCK HOOK GEAR, OPS CHECKED GOOD.

Part: EXHAUST PIPE — SEPARATED (RT ENGINE) · airframe 8,980 hrs · 1 cycles

DURING CRUISE AT 4000' THE PILOT EXPERIENCED A PARTIAL DROP IN MP ON THE RIGHT ENGINE. A DIVERSION TO KPBI WAS PERFORMED AND THE AIRCRAFT LANDED WITHOUT FURTHER INDECENT. A POST FLIGHT VISUAL INSPECTION REVEALED THAT THE LEFT REAR EXHAUST PIPE HAD SEPARATED FROM THE FLANGE ON THE TURBO Y PIPE. THE REAR EXHAUST PIPE AND THE LEFT INTERMEDIATE EXHAUST PIPE THEN EXITED THE ENGINE COMPARTMENT THROUGH THE COWL FLAP OPENING AT THE BOTTOM REAR OF THE ENGINE NACELLE.

Part: BUSS — INOPERATIVE (ELECTRICAL) · airframe 13,689 hrs

GOING INTO AIRPORT, ACFT HAD A TOTAL AVIONICS FAILURE. MX FOUND BOTTOM CIRCUIT BREAKER BUSS INOP. FOUND LOOSE SCREW FEEDING BUSS, TIGHTENED SCREW, OPS CHECKS GOOD.

Part: DRAG BRACE — CRACKED (MLG)

PILOT, REPORTED A NORMAL LANDING. TAPPED ON BRAKES, RT MLG COLLAPSED. ACFT REMOVED FROM ACTIVE RUNWAY. SECURED & INSPECTED RT MLG. INSPECTION REVEALED FAILURE DUE TO BROKEN DRAG BRACE. DRAG BRACE BROKE APPROX 3 " FROM BOTTOM HINGE WHERE IT ATTACHES TO RT STRUT. IT APPEARS DRAG BRACE DEVELOPED AN INTERNAL CRACK WHICH CAUSED STRUCTURE OF DRAG BRACE TO WEAKEN CAUSING GEAR TO COLLAPSE. BOTTOM HINGE GREASE FITTING LOOSE. HINGE BUSHING FROZEN IN-PLACE & SHOWED SIGNS OF CORROSION ON INSIDE WALLS OF BUSHING. BUSHING BOLT WORN DUE TO SPINNING IN BUSHING. TOP HINGE BUSHING HAD MINOR SCORING CORROSION INSIDE WALLS OF BUSHING. DRAG BRACE TUBE SHOWS SIGNS OF CORROSION INSIDE WALLS OF TUBE.

Part: ACTUATOR — OUT OF ADJUST (NLG) · airframe 13,360 hrs

AFTER DEPARTURE OUT OF LCK PILOT SELECTED GEAR UP, BUT IT DID NOT GIVE A GEAR UP INDICATION, RETURNED TO LCK. MAINTENANCE FOUND THE NOSE GEAR WAS NOT GOING UP ALL THE WAY. ADJUSTED NOSE GEAR ACTUATOR, OPS CHECKS GOOD.

Part: LINE — LOOSE (FUEL SYSTEM) · airframe 11,909 hrs

AFTER TAKEOFF OUT OF HFD TO BWI PILOT NOTICED FUEL FLOW LOW AND EGT HIGH. MAINTENANCE FOUND THE UPPER DECK REFERENCE LINE LOOSE. TIGHTENED LINE, OPS CHECKED GOOD.

Part: BOLT — PULLED (NR 5 CYLINDER) · airframe 11,904 hrs

AFTER TAKEOFF OUT OF SYR RIGHT ENGINE MANIFOLD PRESSURE DROPPED. AIRCRAFT THEN RETURNED TO SYR WITHOUT ANY PROBLEMS. MAINTENANCE FOUND NR 5 CYLINDER INTAKE PIPE HOLD DOWN BOLT PULLED THE THREADS OUT OF CYLINDER. MAINTENANCE HELICOILED CYLINDER, OPS CHECKED GOOD.

Part: CONTROLLER — DEFECTIVE (RT ENGINE) · airframe 13,048 hrs

AFTER TAKEOFF OUT OF LCK THE RIGHT ENGINE STARTED SURGING PLUS AND MINUS 3 INCHES, THEN RETURNED TO LCK. MAINTENANCE CHECKED FUEL NOZZLES, FOUND OK. CHANGED THE DIFFERENTIAL CONTROLLER, OPS CHECKED GOOD.

Part: PLUG — MISSING (VACUUM PUMP) · airframe 11,681 hrs

WHILE TROUBLESHOOTING AN ALTERNATOR PROBLEM MAINTENANCE FOUND THAT AT 2000 RPM ONLY HAD 3 INCH VAC PRESSURE. FOUND THE VANE WEAR INSPECTION PLUG MISSING FROM VAC PUMP S/N D3497 TSN 475.7 RAPCO. REMOVED AND REPLACED PUMP.