N70

Part: UNKNOWN — ODOR (ZONE 200)

ON 09 DECEMBER 2025, WAS PERFORMING FLIGHT INSPECTION MANEUVERS WHEN THE CREW BECAME AWARE OF A STRONG ODOR OF ELECTRICAL SMOKE IN THE COCKPIT. AN EMERGENCY WAS DECLARED WITH BOSTON TRACON AND AN EMERGENCY LANDING WAS PERFORMED ON RUNWAY 27. AIRPORT RESCUE AND FIREFIGHTING VEHICLES WERE DISPATCHED AND THE CREW EVACUATED ON THE RUNWAY. THE AIRCRAFT WAS THEN TOWED TO SIGNATURE FLIGHT SUPPORT FBO. MAINTENANCE AND ON-CALL DUTY MANAGER HAVE BEEN NOTIFIED. RU3A

Part: SWITCH — OUT OF ADJUST (CABIN DOOR) · airframe 15,979 hrs · 8,329 cycles

CABIN DOOR WARNING LIGHT ILLUMINATED IN FLIGHT. CORRECTED BY ADJUSTING FWD "J" HOOK MICROSWITCH

Part: WARNING LIGHT — ILLUMINATED (COCKPIT) · airframe 15,974 hrs · 8,324 cycles

CABIN DOOR GAVE LOUD POP ON DEPARTURE WHEN PRESSURIZING. CABIN DOOR WARNING LIGHT ILLUMINATED

Part: FRAME — CRACKED (FUSELAGE) · airframe 15,952 hrs · 8,307 cycles

FUSELAGE FRAME FS291 IS CRACKED AND DENTED. ISSUED MAJOR EO 20-28-04 FRAME 291 FLANGE DAMAGE.

Part: SKIN — CRACKED (TE FLAP) · airframe 15,679 hrs · 8,175 cycles

LT OUTBOARD FLAP LOWER FORWARD SKIN IS CRACKED.

Part: SKIN — CRACKED (TE FLAP) · airframe 15,679 hrs · 8,175 cycles

OUTBOARD FLAP LOWER FORWARD SKIN CRACKED APPROXIMATELY 1.5 INCH IN LENGTH.

Part: SKIN — CRACKED (TE FLAP) · airframe 8,175 hrs

OUTBOARD FLAP LOWER FORWARD SKIN CRACKED.

Part: WARNING SYSTEM — ACTIVATED (COCKPIT) · airframe 15,255 hrs · 7,967 cycles

LT FIRE EXTINGUISHER DISCHARGE LIGHT ILLUMINATED IN FLIGHT.

Part: SWITCH — DAMAGED (AIRSTAIR LIGHT) · airframe 14,688 hrs · 7,714 cycles

ARCING BEHIND RELIEF TUBE COMPARTMENT. AIR STAIR DOOR HAS NO POWER TO INSPECTION LIGHTS AND REAR LIGHT. FOUND RELIEF TUBE SPRING WRAPPED AROUND AIR STAIR LIGHT SWITCH. UNWRAPPED SPRING FROM AIR STAIR LIGHT SWITCH. INSTALLED RELIEF TUBE AND RESET AIR STAIR CIRCUIT BREAKER, NO FURTHER ISSUES DISCOVERED.

Part: CONNECTOR — DAMAGED (FIRE BOTTLE) · airframe 14,664 hrs · 7,703 cycles

DURING FLIGHT, THE RIGHT FIRE BOTTLE DISCHARGED LIGHT ILLUMINATED. CORRODED KNIFE EDGE CONNECTORS WERE DISCOVERED AND REPLACED.

Part: UPLOCK SWITCH — FAULTY (NLG) · airframe 13,991 hrs · 7,362 cycles

GREEN NLG & TAXI ANNUNCIATOR IS ON WITH GEAR DOWN. INDICATOR FLASHES IN PULSE, STEADY WITH NLG& TAXI LIGHTS ON. REPLACED NOSE LANDING GEAR UPLOCK INDICATOR SWITCH.

Part: DIODE — INOPERATIVE (RUDDER) · airframe 13,521 hrs · 7,118 cycles

RUDDER BOOST CAUTION LIGHT ILLUMINATED IN FLIGHT. R & R DIODE ON PLUG 3140P3 & 3140P4. READJUSTED ANTI-CHAFING WRAP ON IAPS WIRE HARNESS. OPERATIONS CHECKED GOOD IAW MM CHP 27-22.

Part: WARNING SYSTEM — ACTIVATED (COCKPIT) · airframe 13,519 hrs · 7,116 cycles

DURING DECENT THE RUDDER BOOST OFF SEGMENT LIGHT WITH ASSOCIATED CAUTION LIGHT FLICKERED SEVERAL TIMES & THEN REMAINED ON STEADY. THE EMER & ABNORMAL CHECK LISTS WERE CONSULTED & APPROPRIATE STEPS FOLLOWED. ACFT FLOWN TO INTENDED LANDING & RON LOCATION, APPROXIMATELY TWENTY 20 MILES FROM INCIDENT LOCATION WHERE ADEQUATE RUNWAY & MX FACILITIES ARE AVAILABLE & LANDED WITHOUT FURTHER INCIDENT.

Part: FAN — INOPERATIVE (NCU) · airframe 13,257 hrs · 6,986 cycles

RIGHT AFIS SLIDING SCREEN FROZE IN FLIGHT WITH A COMPLETE NCU LOCKUP. AFTER LANDING TO ATTEMPT A POWER DOWN RESTART OF AFIS, AN ELEC BURN SMELL NOTICED IN CABIN, AFTER MISSION POWER WAS REMOVED ELEC BURN SMELL DISAPPEARED, REPLACED NCU FAN.

Part: BRACKET — DEFECTIVE (ZONE 400) · airframe 11,405 hrs · 6,109 cycles

WHILE ON APPROACH, AIRCRAFT YAWED 15-20 DEGREES RIGHT OF RUNWAY CENTERLINE. MAIN GEAR TOUCHED PAVEMENT AS GO-AROUND WAS EXECUTED. ON RE-APPROACH, A FULL STOP LANDING WAS ACCOMPLISHED WITH NO FURTHER INCIDENT. BACKGROUND INFO RELATIVE TO CURRENT INCIDENT. RIGHT PROP PITCH LIGHT CAME ON PRIOR TO TOUCHDOWN. AIRCRAFT YAWED TO RIGHT (PROP PITCH BELOW FLIGHT IDLE STOP). FOUND RT GROUND IDLE SOLENOID BRACKET NOT CLAMPING REVERSE WIRE ROPE HOUSING TIGHTLY. TIGHTENED BRACKET AND ADJUSTED ROLLER. GROUND RUN CHECKED SERVICEABLE.

Part: ROD — BINDING (BETA RING) · airframe 11,357 hrs · 6,088 cycles

BETA RING FEED BACK RODS ARE BINDING WHEN MOVING FWD AND AFT. DISCOVERED FEED BACK RODS BENT .030.

Part: CONTROL HANDLE — FAILED (MLG) · airframe 9,846 hrs · 5,352 cycles

DESCENT CHECKLIST WAS COMPLETED. PILOT LOWERED GEAR HANDLE BELOW 184 KNOTS. SIC COMMENCED CHECKLIST AND NOTED THE GEAR POSITION INDICATOR LIGHTS WERE NOT ILLUMINATED NOR WERE THE 2 RED INDICATOR LIGHTS IN THE LANDING GEAR CONTROL HANDLE. PILOT COMMENCED A GO-AROUND AT 1500 FT MSL AND BEGAN TO CLIMB TO 2000 FT MSL. SUBSEQUENTLY THE GEAR LOWERED ON ITS OWN.

Part: PACKING — CUT (FUEL FILTER)

INBOUND TO DESTINATION, NOTICED A THIN STREAM OF CLEAR LIQUID COMING FROM THE TOP VENTS OF THE LT ENGINE. THE CREW DECIDED TO RETURN TO HOME STATION TO HAVE FLUID AND POSSIBLE LEAK REPAIRED. REPLACED DEFECTIVE FUEL FILTER O-RING ON LT ENGINE. (K)

Part: NOZZLE — DAMAGED (ENGINE) · airframe 11,983 hrs

ENGINE TURBINE NOZZLE HAS STRIPPED THREADS AT GP SUPPORT MATING SURFACE.

Part: NOZZLE — FOD (ENGINE) · airframe 11,983 hrs

TURBINE NOZZLE HAS FOREIGN MATERIAL ON AFT SIDE OF DIAPHRAGM.

Part: BLOWER — OVERHEATED (CABIN)

THE CREW REPORTED SMOKE SMELL IN FLIGHT. MOTOR REMOVED AND REPLACED. APPARENT CAUSE BLOWER MOTOR OVERHEATING. ENGINEERING DEPARTMENT WILL RESEARCH MOTOR COOLING, AND WILL ISSUE APPROPRIATE TIEO. (M)

Part: TRANSISTOR — SHORTED (TACAN SYSTEM)

ELECTRICAL FUMES INSIDE AIRCRAFT, MADE PRECAUTIONARY LANDING. (M)