EXECUTIVE FLITEWAYS, INC.

#2 ENGINE FIRE INDICATION OBSERVED DURING CLIMB OUT FROM KBED. CREW FOLLOWED QRH PROCEDURES AS REQUIRED. ENGINE FIRE INDICATION FOR #2 ENGINE ON CLIMB OUT. FOLLOWED QRH PROCEDURES. USED BOTH EXTINGUISHERS. INDICATION CONTINUED. SECURED ENGINE AND LANDED SINGLE ENGINE. INDICATION WAS FALSE. THERE WAS NO ENGINE FIRE.

DISCOVERED DURING GROUND OPERATION. NO AIR WAS FELT AT THE BACK OF THE TAT PROBES. INSPECTION OF THE BLEED AIR FEED LINE STARTING AT THE TAT SOLENOID IN THE AFT EQUIPMENT BAY AREA FOUND A LINE HAD SEPARATED JUST AFTER AN ADEL SUPPORT CLAMP. NO ADDITIONAL SURROUNDING DAMAGE WAS FOUND DUE TO THIS BREAK. GULFSTREAM FAST WAS CALLED AND THEY PERMASWAGED A NEW LINE IN PLACE. OPERATIONAL GROUND CHECK OF TAT PROBE WAS SATISFACTORY WITH AIR EXISTING THE AFT END OF BOTH LEFT AND RIGHT PROBES.

WHILE PERFORMING FUSELAGE INTERIOR WING ATTACH INSPECTION TC 532055, FOUND FUEL MAINFOLD LINE CHAFING AGAINST APU IGNITOR, IGNITION LEAD.

FLIGHT CREW REPORTED EXCESSIVE VIBRATION FROM LT ENGINE AREA FOLLOWING LANDING. NOTED EXCESSIVE BRUSH DUST AND DIRT, ETC. ON AND AROUND LT ENGINE STARTER/GENERATOR. REPLACED STARTER/GENERATOR, ENGINE VIBRATION NORMAL. DURING TEARDOWN OF REMOVED STARTER/GENERATOR FOR O/H, NOTED ANTI-DRIVE END BEARING BURNED, EVIDENCE OF SPINNING IN ANTI-DRIVE END BRUSH SUPPORT ASSY. END BELL HOUSING. INSTALLED BEARINGS APPEAR NON-STANDARD; MARKINGS SHOW MFG OUT OF COUNTRY, PN W6204RLD, ADDITIONAL MARKING OF "ZA12". DRIVE END BEARING THE SAME, EXCEPT WITH "ZA13" CODE MARKING. TRANSIENT ACFT.

FLIGHT CREW REPORTED EXCESSIVE VIBRATION FROM L/H ENGINE AREA FOLLOWING LANDING AT PWK. NOTED EXCESSIVE DUST AND DIRT, ETC. ON AND AROUND L/H ENGINE STARTER/GENERATOR. REPLACED STARTER/GENERATOR WITH AN EXCHANGE STARTER/GENERATOR, ENGINE VIBRATION NORMAL. DURING TEAR-DOWN OF REMOVED STARTER/GENERATOR FOR OVERHAUL, NOTED ANTI-DRIVE END BEARING BURNED, EVIDENCE OF BEARING SPINNING IN END BRUSH SUPPORT ASSY. END BELL HOUSING. INSTALLED BEARINGS APPEAR NON-STANDARD; MARKINGS SHOW MANUFACTURED IN CHINA BY PEER, P/N W6204RLD, WITH ADDITIONAL MARKING OF "ZA12". DRIVE END BEARING SIMILAR, EXCEPT WITH "ZA13" MARKING. TRANSIENT ACFT, MX HISTORY UNKNOWN.

THE CUSTOMER REPORTED THAT THE CREW OXYGEN SYSTEM LOST PRESSURE OVER A FEW DAYS. DURING TROUBLESHOOTING OF THE SYSTEM THE TECHNICIAN FOUND THE ADAPTER FITTING, P/N 500189, LOCATED BETWEEN THE TUBING NUT AND THE PRESSURE GAUGE, P/N 171013-00, FOR THE CREW OXYGEN BOTTLE, LOCATED IN EXTERNAL OXYGEN SERVICING PANEL. FURTHER INSPECTION REVEALED THAT THE FITTING WAS CRACKED LONGITUDINALLY ON THE FEMALE PORTION OF THE FITTING, WHICH IS A PIPE THREAD. THIS CRACK IS EXACTLY THE SAME AS PREVIOUSLY REPORTED AND PRINTED IN AC 43-16A. A NEW GUAGE, P/N 171013-00 WHICH INCLUDES THE FITTING, P/N 500189, WAS INSTALLED AND LEAK CHECKED. NO LEAKS WERE NOTED.

(REF NR: ON 800FH101706JC) AFTER TAKEOFF, COULD NOT RAISE LANDING GEAR. INSPECTED LANDING GEAR. FOUND LEFT WEIGHT ON WHEELS SWITCH TO BE INTERMITTENT. REPLACED LEFT MAIN GEAR WEIGHT ON WHEEL MICROSWITCH. ACCOMPLISHED SEVERAL GEAR SWINGS WITH SATISFACTORY RESULTS. (K)

(REF NR: ON 298EF092206JC) CREW REPORTED MAIN GEAR RED UNSAFE LIGHTS REMAINED ILLUMINATED UNTIL GEAR WAS RECYCLED. INSPECTED MAIN GEAR RETRACTION/EXTENSION SYSTEM. VISUALLY INSPECTED MAIN AND NOSE GEAR WELLS AND LT AND RT MAIN GEAR SQUAT SWITCHES. CYCLED GEAR 20 TIMES WITH SATISFACTORY RESULTS. (K)

REF NR (ON 298EF090106JC) CREW REPORTED MAIN GEAR RED UNSAFE LIGHTS REMAINED ILLUMINATED UNTIL GEAR WAS RECYCLED. INSPECTED MAIN GEAR ASSEMBLIES, DOORS, MICRO SWITCHES AND GEARLOCKS. CLEANED AND LUBRICATED MICRO SWITCHES AND GEARLOCKS. CYCLED GEAR NUMEROUS TIMES WITH SATISFACTORY RESULTS. (S)

UPON TAKEOFF THE LANDING GEAR WOULD NOT RETRACT, REQUIRING NUMEROUS GEAR HANDLE CYCLES TOO RETRACT THE LANDING GEAR. MAINTENANCE INSPECTED AND OPERATED THE LANDING GEAR SYSTEM. DURING INSPECTION FOUND THE GEAR SELECTOR SWITCH TO BE INTERMITTENT. REMOVED AND REPLACED GEAR SELECTOR SWITCH WITH NEW ASSEMBLY. CYCLED GEAR FOUND SATISFACTORY. (K)

NOSE GEAR UNSAFE LIGHT REMAINED ILLUMINATED UPON GEAR RETRACTION. CREW RECYCLED GEAR AND ALL LIGHTS EXTINGUISHED. MAINTENANCE INSPECTED LANDING GEAR SYSTEM AND FOUND NOSE LANDING GEAR TO BE LAGGING DURING OPERATION. TROUBLESHOT SYSTEM TO GEAR SELECTOR VALVE. REPLACED SELECTOR VALVE WITH NEW AND OPERATIONAL CHECK OF GEAR FOUND TO BE SATISFACTORY. (K)

NOSE GEAR UNSAFE LIGHT REMAINED ILLUMINATED AFTER GEAR RETRACTION. INSPECTED LANDING GEAR SYSTEM AND FOUND NOSE GEAR FREE FALL ACTUATOR ARM TO BE STICKING IN EXTENDED POSITION. REPLACED NOSE GEAR FREE FALL ACTUATOR. ACCOMPLISHED NOSE GEAR UPLOCK ADJUSTMENT TEST, FREE FALL GEAR BLOW DOWN PLUMBING LEAK CHECK AND SEVERAL GEAR SWINGS WITH SATISFACTORY RESULTS. (K)

NOSE GEAR RED UNSAFE LIGHT DID NOT EXTINGUISH ON TAKEOFF, FOLLOWED BY BOTH MAIN GEAR UNSAFE LIGHTS (RED) ILLUMINATING. GEAR WAS EXTENDED AND ALL T3 GEAR INDICATED LOCKED WITH NO UNSAFE CONDITION. AIRCRAFT LANDED UNEVENTFULLY. INSPECTED LANDING GEAR SYS AND TROOUBLESHOT PROBLEM TO THE LANDING GEAR DOOR CONTROL VALVE. FOUND VALVE TO BE LEAKING INTERNALLY INTO THE EMERGENCY AIR SYS SIDE. PURGED FLUID FROM EMERGENCY CIRCUIT. REPLACED LANDING GEAR DOOR CONTROL VALVE. CYCLED GEAR 15 TIMES WITH SATISFACTORY RESULTS. SERVICED HYDRAULIC SYSTEM. (K)

RT MAIN GEAR DOWN LOCKED GREEN LIGHT REMAINED ILLUMINATED AFTER GEAR RETRACTION. INSPECTED MAIN GEAR SYSTEM AND FOUND GEAR SELECTOR HANDLE WIRE BUNDLE CHAFFING CAUSING FAULT. REPLACED HANDLE ASSY AND ACCOMPLISHED SEVERAL GEAR SWINGS WITH SATISFACTORY RESULTS. (K)

DURING CLIMB, NR 1 ENGINE FIRE WARNING LIGHT ILLUMINATED AT ITT 802 DEGREES, REDUCED TO 760 DEGREES, LIGHT EXTINGUISHED. ENGINE INDICATIONS WERE NORMAL. VISUALLY INSPECTED BLEED AIR PLUMBING AND ELECTRICALLY RUNG OUT FIRE WARNING CIRCUIT. FOUND AFT FIRE ELEMENT BELOW MFG. REQUIREMENTS. REPLACED AFT FIRE ELEMENT. ALL CHECKS NORMAL. (M)

DURING CLIMB, AT ALTITUDE, THE NR 1 ENGINE FIRE WARNING ILLUMINATED, ITT INDICATED 805 DEGREES. THRUST REDUCED BELOW 790 DEGREES ITT, AND LIGHT WENT OUT. ALL ENGINE INDICATIONS WERE NORMAL. MAINTENANCE TROUBLESHOT NR 1 ENGINE FIRE WARNING LIGHT ILLUMINATION TO A LEAKING N1 MONOPOLE GASKET. MAINTENANCE REPLACED MONOPOLE GASKET. A SATISFACTORY OPERATIONAL AND LEAK TEST WAS CONDUCTED AND THE AIRCRAFT WAS RTS. (K)

NR 2 MAIN GEAR UNSAFE LIGHTS DID NOT EXTINGUISH DEPARTING. PREVIOUS GEAR CYCLES WERE UNEVENTFUL. LAST GEAR CYCLE INTO ISP WAS NORMAL. JACKED AIRCRAFT, INSPECTED MAIN LANDING GEAR ASSEMBLIES, UPLOCK AND DOWNLOCK SWITCHES AND DOOR SWITCHES AND MECHANISMS, FOUND NO FAULTS. LUBRICATED MAIN GEAR ASSEMBLIES. ACCOMPLISHED 20 PLUS GEAR SWINGS AND PERFORMED SATISFACTORY OPERATIONAL CHECKS. (EA11200504903) (K)

DURING CLIMB, AT ALTITUDE, THE NR 2 ENGINE FIRE WARNING ILLUMINATED, ITT INDICATED 801 DEGREES, WARNING CEASED WITHIN 10 SECONDS AFTER THRUST WAS REDUCED BELOW 780 DEGREES ITT. ALL ENGINE INDICATIONS WERE NORMAL. MAINTENANCE TROUBLESHOT NR 2 ENGINE FIRE WARNING LIGHT ILLUMINATION TO A LEAKING N1 MONOPOLE GASKET. MAINTENANCE REPLACED MONOPOLE GASKET. A SATISFACTORY OPERATIONAL AND LEAK TET WAS CONDUCTED AND THE AIRCRAFT WAS RTS. (K)

AFTER TAKEOFF, CREW FELT A VIBRATION. CREW RETURNED FOR INSPECTION AND EVALUATION. AC LANDED UNEVENTFULLY. AIRCRAFT WAS INSPECTED. FOUND T/R LOCK ACCESS PANEL MISSING FROM LT IB ENGINE. AC WAS INSPECTED FOR DAMAGE OR DEFECT- NONE NOTED. NEW PANEL INSTALLED. AC WAS RETURNED TO SERVICE. (K)

(REF: 1940060805JC) CLIMBING THROUGH 12,000 FEET, CABIN PRESSURE PANEL DISPLAYED A FAULT LIGHT. SIMULTANEOUSLY AN EMERGENCY PRESS LIGHT ILLUMINATED FOLLOWED BY EMERGENCY PRESSURIZATION SYS ACTIVATION. CABIN ALT ONLY REACHED APPROX 6000 FT INDICATED. CREW THEN PROCEEDED TO FOLLOW CHECKLIST PROCEDURES. AC WAS INSPECTED AND PERFORMED PRESSURIZATION GROUND CHECKS. FOUND AUTO PRESS SYS FAILED. AUTO SYS PLACED ON MEL. UPON FURTHER TESTING AT MFG, FOUND DEFECTIVE FLOW CONTROL VALVE. REPLACED VALVE. ALL OPS CHECKS PERFORMED SATISFACTORY. AC RETURNED TO SERVICE. AC DIVERTED AND LANDED UNEVENTFULLY. (K)

DURING CRUISE FLIGHT AT 39,000 FEET, A BANG WAS HEARD FOLLOWED BY LT ENGINE SHUTDOWN AND ILLUMINATION OF BOTH LT ENGINE COMPUTER LIGHTS AND OIL PRESSURE DROP. MFG NOTIFIED. INITIAL EVALUATION REVEALED NO MECHANICAL DAMAGE OR DEFECTS NOTED TO ENGINE ASSY. DOWNLOAD AND INTERROGATION OF EDU INDICATED THE PROBABLE CAUSE TO BE POSSIBLE ELECTRONIC FUEL CONTROL FAILURE. RESTART WAS ATTEMPTED ALTHOUGH UNSUCCESSFUL, AIRCRAFT WAS DIVERTED AND SINGLE ENGINE LANDING WAS ACCOMPLISHED UNEVENTFULLY. (EA11200402145)

VIBRATION FELT DURING FLT FROM REAR OF AC. ALL ENG INDICATIONS NORMAL. PASSING AC REPORTED WITNESSING SPARKS FROM REAR OF RT SIDE OF AC. UPON INITIAL INSP, METAL DEBRIS WAS NOTED IN LT ENGINE TAIL PIPE AREA. ENG MFG AND REPAIR FACILITY WERE CONTACTED FOR FURTHER INSP. BOROSCOPE INSPECTION REVEALED POSSIBLE 4TH STAGE LP COMPRESSOR ROTOR OR STATOR FAILURE. ENGINE REMOVED FOR DISASSEMBLY, INSP AND REPAIR. CREW BRIEFED ON A POSSIBLE SINGLE ENG APPROACH AND REQUESTED AIRPORT FIRE RESCUE. APPROX 10 NM OUT, VIBRATION WAS FELT ALTHOUGH ALL ENG INDICATIONS CONTINUED TO REMAIN NORMAL. AC LANDED UNDER ALL ENGINE POWER, NO FURTHER VIBRATIONS DURING LANDING, ROLL OUT OR TAXI. (EA11200402104)

UPON APPROACH, FLAPS WOULD NOT EXTEND FOR LANDING. SYSTEM WAS INSPECTED AND OPERATION CHECKS WERE ACCOMPLISHED. NO DEFECTS WERE NOTED AND AIRCRAFT WAS RETURNED TO SERVICE. NO FLAPS LANDING ACCOMPLISHED IAW FLIGHT MANUAL. (EA11200305003)

FOLLOWING TAKEOFF, MAIN GEAR RETRACTION RED UNSAFE LIGHT REMAINED ILLUMINATED. GEAR WAS RECYCLED AND ALL GREEN DOWN/LOCKED WAS INDICATED. AIRCRAFT RETURNED TO POINT OF DEPARTURE. AIRCRAFT RETURNED TO ISP FOR INSPECTION AND EVALUATION. NO DISCREPANCIES NOTED DURING FERRY FLIGHT. LANDING GEAR INSTALLATION, MICRO-SWITCHES AND SIDESTAYS INSPECTED AND ADJUSTMENTS CHECKED FOR PROPER RIGGING. ACCOMPLISHED SUCCESSFUL GEAR SYSTEM SWINGS AND FUNCTIONAL CHECKS. NO DEFECTS WERE NOTED. AIRCRAFT WAS RETURNED TO SERVICE. (M)

DURING GEAR RETRACTION, NOSE WHEEL UNSAFE LIGHT ILLUMINATED. INSPECTION WAS COMPLETED ON NOSE GEAR AND DOORS, NOSE GEAR UPLOCK, UPLOCK ACTUATORS AND SHUTTLE VALVE. NO DISCREPANCIES NOTED. GEAR OPERATIONAL CHECK ACCOMPLISHED, CYCLED 10 TIMES AND FOUND OPS CHECK GOOD. SUSPECT CAUSE TO BE RELATED TO AIRCRAFT BEING COLD SOAKED DUE TO WEATHER CONDITIONS.

AUTOPILOT PITCHES NOSE DOWN WHEN ENGAGED IN CRUISE FLT. REMOVED NR 1 VERTICAL GYRO AND INSTALLED OVERHAULED UNIT. OPS CHECK GOOD.

RT THRUST REVERSER ILLUMINTED IN FLIGHT, SYSTEM OPERATED CORRECTLY IWA MFG MM. VISUAL INSPECTION REVEALED STICKY LATCHES AND DEFECTIVE T/R ACCUMULATOR. AWAITING FINAL FIX AND RETURN TO SERVICE. REMOVED AND REPLACED ACCUMUALTOR AND INDICATOR GAUGE. LATCHES WERE CLEANED AND LUBRICATED. AS PRECAUTION, T/R SELECTOR VALVES WERE REPLACED ALONG WITH THE SYSTEM RELIEF VALVE AND THE RT SIDE T/R ACTUATOR. ALL CHECKS, NORMAL.

DURING CLIMB, LANDING GEAR DID NOT RETRACT WHEN SELECT UP ON FIRST RETRACTION ATTEMPT. SELECTOR HANDLE CYCLED GEAR OPERATED NORMALLY ON ALL SUBSEQUENT SELECTIONS. ACCOMPLISHED OPERATION CHECKS COULD NOT DUPLICATE, TROUBLESHOT SYSTEM AND REPLACED SUSPECTED INTERMITTENT MAIN LANDING GEAR DOOR CONTROL VALVE. ACCOMPLISHED NUMEROUS GEAR SWINGS TO INSURE PROPER OPERATION AND AIRCRAFT WAS RETURNED TO SERVICE. (M)

AFTER LANDING, THE FLIGHT CREW NOTED THAT THE NR 3 ENGINE OIL WARNING LIGHT ILLUMINATED. OIL PRESSURE INDICATED 25 PSI. UPON POST FLIGHT INSPECTION, CREW NOTICED OIL LEAKING FROM THE NR 3 ENGINE COWLING AND OIL FILTER BYPASS BUTTON WAS POPPED. AIRFRAME TT 9153.0 HOURS. NR 3 ENGINE TT 8958.2 HOURS NR3 ENGINE CYCLES 6436. AIRCRAFT WAS INSPECTED BY MAINTENANCE AND SUSPECTED AN INTERNAL FAILURE. LOANER ENGINE WAS INSTALLED IN THE NR 3 POSITION. ORIGINAL NR 3 ENGINE WAS SENT TO MFG FOR TEARDOWN INSPECTION.

ON TAKEOFF CLIMB, LANDING GEAR FAILED TO RETRACT, TRANSPONDER DID NOT REPORT, CABIN FAILED TO PRESSURIZE. INSPECTED AND FOUND DEFECTIVE LEFT MAIN GEAR SQUAT SWITCH. REMOVED LEFT SQUAT SWITCH AND INSTALLED A NEW UNIT IAW LEAR 60 MM. OPERATIONAL CHECK, GOOD. UNEVENTFUL PRECAUTIONARY LANDING.

UPON LANDING GEAR EXTENSION, DURING FINAL APPROACH, RIGHT MAIN GEAR GREEN DOWN AND LOCK LIGHT DID NOT ILLUMINATE. PERFORMED LIGHT TEST AND CONFIRMED LIGHT INOPERATIVE. REPLACED BULBS IN LANDING GEAR CONTROL PANEL. JACKED AIRCRAFT AND PERFORMED LANDING GEAR FUNCTIONAL CHECK. OPS CHECK GOOD IAW LEARJET MM. FLT CREWS SUSPECTED GEAR DOWN LIGHT INDICATION BULB TO BE AT FAULT. RAN ALL APPROPRIATE CHECKS AND AS FURTHER PRECAUTION REQUESTED TOWER FLYBY FOR LANDING GEAR DOWN VERIFICATION. (M)

AIRCRAFT WAS IN CRUISE AT FL 35000, WHEN CREW NOTICED THAT THE AIRCRAFT BEGAN TO GRADUALLY DEPRESSURIZE. THE CREW ELECTED TO DESCEND TO A LOWER ALTITUDE. DURING DESCENT CABIN PRESSURE DROP CAUSED THE AURAL WARNING HORN TO SOUND AND PAX OXYGEN MASKS TO DEPLOY. CREW THEN DECLARED AN EMERGENCY AND DIVERTED TO BUF INTERNATIONAL AIRCRAFT MADE NORMAL LANDING. AIRCRAFT WAS INSPECTED AND FOUND CLAMPS SECURING MAIN CABIN AIR SUPPLY TUBE FLEX COUPLINGS HAD LOOSENED CAUSING LEAKAGE AND SUBSEQUENT LOSS OF PRESSURIZATION SYSTEM EFFICIENCY. ALL COUPLINGS CLAMPS SECURED A ACCOMPLISHED SYSTEM TEST. CHECKED OK.

PROPELLER HAS NEW STYLE BLADE LOCKS. COTTERPIN THAT HOLDS SPRING AND LOCK IN ASSEMBLY IS FAILING OR WEARING OUT THE HOLES IN HOUSING.

EN ROUTE TO MKC, THE LT AND RT FUEL QUANTITY INDICATORS DISPLAYED A RAPIDLY DECREASING FUEL TOTALLY INCONSISTENT WITH THE FUEL FLOW INDICATIONS. AN EMERGENCY WAS DECLARED AND AIRCRAFT DIVERTED AND LANDED AT STL WITHOUT INCIDENT. FUEL CONTENTS GAUGE AMPLIFIERS; LEFT P/N FAB50, SN TW777. TT 6,783.2 HOURS, RT PN FAB30, SN TP2848. TT 6,783.2 HOURS. AMPLIFIER COAXIAL CONNECTORS WERE FOUND WET. CONNECTORS DRIED AND CLEANED. ACFT FUEL QUANTITY CALIBRATION CHECK PERFORMED WITH NO DISCREPANCIES. ACFT RETURNED TO SERVICE. REF: OPER CONTROL NR 98ZZZX499.

EN ROUTE TO MKC, THE LT AND RT FUEL QUANTITY INDICATORS DISPLAYED A RAPIDLY DECREASING FUEL TOTALLY INCONSISTENT WITH THE FUEL FLOW INDICATIONS. AN EMERGENCY WAS DECLARED AND AIRCRAFT DIVERTED AND LANDED AT STL WITHOUT INCIDENT. FUEL CONTENTS GAUGE AMPLIFIERS; LEFT P/N FAB50, SN TW777. TT 6,783.2 HOURS, RT PN FAB30, SN TP2848. TT 6,783.2 HOURS. AMPLIFIER COAXIAL CONNECTORS WERE FOUND WET. CONNECTORS DRIED AND CLEANED. ACFT FUEL QUANTITY CALIBRATION CHECK PERFORMED WITH NO DISCREPANCIES. ACFT RETURNED TO SERVICE. REF: OPER CONTROL NR 98ZZZX498.

AIRCRAFT ON GROUND AT GON, WITH ELECTRIC POWER ON IN AIRCRAFT. BURNING SMELL EMITTED FROM LAVATORY. ELECTRIC POWER REMOVED FROM AIRCRAFT. IDENTIFIED CAUSE OF BURNING SMELL TO BE VENTURI OPERATED FAN. AIRCRAFT OPERATED IAW MEL PROCEDURES. FAN AND VENTURI TUBE PN 132322-2-1, SN 84-1449. TSN: 6,696.9 HOURS. FAN MOTOR PN 207640-10 BURNED AND MELTED. INSTALLED OVERHAULED FAN AND VENTURI TUBE. PERFORMED OPERATIONAL CHECK, GOOD. AIRCRAFT RETURNED TO SERVICE 11-6-97.

DURING APPROACH TO GSP, RT ENGINE FIRE WARNING ILLUMINATED MOMENTARILY. ENGINE POWER WAS REDUCED AND THE FIRE WARNING EXTINGUISHED. THE AIRCRAFT LANDED WITHOUT INCIDENT. NO DISCREPANCIES WERE FOUND. THE FIRE WARNING SYSTEM TESTS NORMAL. A & P MECHANIC AT GSP REMOVED RT ENGINE COWLS. CHECKED AND CLEANED FIRE LOOP CONNECTORS. PERFORMED VISUAL INSPECTION OF ENGINE AND FOUND NO EVIDENCE OF ENGINE FIRE OR BLEED AIR LEAKS. SECURED ENGINE COWLS. AIRCRAFT RETURNED TO SERVICE.

DURING APPROACH TO ISP, NR 2 ENGINE FIRE WARNING LIGHT FLASHED TWICE. AIRCRAFT LANDED WITHOUT INCIDENT. FALSE FIRE WARNING SUSPECTED. INSPECTED NR 2 ENGINE FIRE LOOPS, NO DISCREPANCIES FOUND AND NO EVIDENCE OF ENGINE FIRE. INSPECTED NR 2 ENGINE FIRE PROTECTION AIRCRAFT WIRING AND FOUND CHAFED WIRE. REPAIRED CHAFED WIRE. OPERATIONAL CHECK AIRCRAFT FIRE WARNING SYSTEM SATISFACTORY FOR RETURN TO SERVICE.

EN ROUTE JAN TO SGF, NR 2 ENGINE FIRE WARNING ILLUMINATED. PEFORMED ENGINE FIRE SHUT-DOWN PROCEDURES ON NR 2 ENGINE. DISCHARGED NR 1 FIRE BOTTLE, AIRCRAFT LANDED AT SGF WITHOUT INCIDENT. INSPECTED NR 2 ENGINE FIRE LOOPS, NO DISCREPANCIES FOUND. FIRE WARNING SYSTEM OPERATING NORMAL. CLEANED NR 2 ENGINE FIRE LOOP CONNECTORS. INSTALLED REPLACEMENT NR 1 FIRE BOTTLE. AIRCRAFT RETURNED TO ISP. PERFORMED DETAILED INSPECTION OF AIRCRAFT FIRE WARNING SYSTEM. REPLACED MASTER WARNING CONTROL BOX, P/N 2618055-23, WITH SERVICEABLE UNITS. OPERATIONAL CHECK AIRCRAFT FIRE WARNING SYSTEM SATISFACTORY FOR RETURN TO SERVICE.

JFK/DTW, NITE IMC - ON 2-27-96 EN ROUTE, RT CURRENT LIMITER FAIL LIGHT ILLUMINATED FOLLOWED BY THE RT GEN FAIL LIGHT ILLUMINATED. AIRCRAFT DIVERTED TO BUF. AIRCRAFT LANDED WITHOUT INCIDENT. INSTALLED NEW CURRENT LIMITER, O/H GENERATOR, O/H VOLTAGE REGULATORS (VOLTAGE REGULATORS REPLACED FOR PRECAUTION). OPERATIONAL CHECKED DC ELECTRICAL SYSTEM GOOD. AIRCRAFT RETURNED TO SERVICE, 2-28-96. LANDINGS, 6,786.

DURING APPROACH TO HUF, NOSE GEAR WOULD NOT INDICATE DOWN AND LOCKED. CYCLED GEAR SEVERAL TIMES TO OBTAIN DOWN AND LOCKED INDICATION. AIRCRAFT LANDED WITHOUT INCIDENT. DUE TO THE NATURE OF THE RECENT MECHANICAL RELIABILITY OF THE NOSE GEAR OPERATION IN LEARJET N717JB, NOSE GEAR ACTUATOR PN 2317100-12, SN B117, HAS BEEN REMOVED FROM SERVICE. PART TT: 2792.8 HOURS. LANDINGS, 2,266.

DURING APPROACH TO TOL, EXTENDED LANDING GEAR AND NOSE GEAR, UNSAFE LIGHT REMAINED ILLUMINATED. CYCLED LANDING GEAR, NORMAL DOWN AND LOCKED INDICATION. CONTACTED TOL TOWER TO CONFIRM NOSE GEAR DOWN. AIRCRAFT LANDED WITHOUT INCIDENT. NOSE GEAR STRUT DEFLATED AND LEAKING HYDRAULIC FLUID. REPLACED NOSE STRUT SEALS, SERVICED STRUT. AIRCRAFT RETURNED TO SERVICE.

ISP - AFTER TAKEOFF, CABIN AND COCKPIT FILLED WITH SMOKE (ENGINE OIL FUMES). EMERGENCY ACTIONS WERE TAKEN AND AIRCRAFT RETURNED TO ISP WITHOUT INCIDENT. BORESCOPE INSPECTION OF ENGINE COMPRESSOR SECTION REVEALED OIL PRESENT IN THE NR 4 AND NR 5 BEARING CARBON SEAL CAVITY. ENGINE TEAR DOWN WILL BE REQUIRED. FINAL REPORT TO FOLLOW. LANDINGS, 6,624.

ISP - AFTER TAKEOFF, CABIN AND COCKPIT FILLED WITH SMOKE (ENGINE OIL FUMES). EMERGENCY ACTIONS WERE TAKEN AND AIRCRAFT RETURNED TO ISP WITHOUT INCIDENT. BORESCOPE INSPECTION OF ENGINE COMPRESSOR SECTION REVEALED OIL PRESENT IN THE NR 4 AND NR 5 BEARING CARBON SEAL CAVITY. OIL LEAKAGE PAST THE NR 4 AND NR 5 AIR/OIL SEALS RESULTED IN SMOKE IN THE CABIN. BOTH THE NR 4 AND NR 5 SEALS WERE REPLACED AND THE NR 5 SEAL AREA SCAVENGE CAPABILITY IMPROVED WITH THE INCORPORATION OF SB 72-3540. THE ENGINE HAS BEEN REASSEMBLED AND HAS DEMONSTRATED ACCEPTABLE PERFORMANCE/FUNCTION ON TEST CELL AND RETURNED TO SERVICE.

ON 1-11-95 DURING APPROACH TO ISP, LT ENGINE CHIP DETECTOR WARNING LIGHT ILLUMINATED. AIRCRAFT LANDED WTIHOUT FURTHER INCIDENT. INSPECTION OF CHIP DETECTOR REVEALED A PIECE OF METAL BRIDGED ACROSS CHIP DETECTOR CONTACTS. ENGINE REMOVED FROM SERVICE. TEAR DOWN REPORT WILL FOLLOW.