N388QS
Operators of this aircraft
Who operated this tail, and how firmly we know it.
| Operator | Role | Period | Basis |
|---|---|---|---|
| NETJETS AVIATION, INC. (DXTA) | Certificate holder | — | Matched by certificate designator |
Accident & incident history
No NTSB accidents or incidents on file for this aircraft.
Maintenance disclosures
UPON MAIN CABIN DOOR CLOSURE FROM INSIDE OF AIRCRAFT COUNTER SPRING BROKE. CABIN DOOR IS CLOSED MANUALLY FROM OUTSIDE AND WILL FREE FALL OPEN WHEN UNLATCHED. GAINED ACCESS TO MED COUNTERBALANCE SPRING. COMPLETED GVI AND NOTED FWD SPRING IS BROKEN. REMOVED REEL ASSY, SHAFT STOP, RETAINER CLIP, ARBOR ASSY. DISASSEMBLED COUNTERBALANCE SPRING AND INSTALLED NJA SUPPLIED NEW SPRING, REINSTALLED REEL ASSY, SHAFT STOP, RETAINER CLIP, ARBOR ASSY. PERFORMED COUNTERBALANCE SYSTEM RIGGING PROCEDURE, ADJUSTED COUNTERBALANCE SPRING AND CABLE TO CORRECT TENSION. MED OPS CHECKED GOOD. NO FURTHER DISCREPANCIES NOTED. RESTORED ALL GAINED ACCESS TO ORIGINAL CONFIG. IAW AMM 52-10-50.
DURING A BATT OVER TEMP EMERGENCY, THE GEAR WAS COMMANDED DOWN FOR LANDING CONFIGURATION. THE GEAR DID NOT REACT. THE LANDING GEAR HANDLE LOCKED IN PLACE IN THE DOWN POSITION. WE WENT AROUND AND COMPLETED THE MANUAL GEAR EXTENSION VIA THE QRH AND SUCCESSFULLY LANDED WITH THE GEAR EXTENDED. ELECT TO CHANGE OUT BOTH MAIN SHIP NICAD BATTERIES DUE TO LT OVERHEAT HIGH TEMP IN FLIGHT AND THE NOTED HIGHER RESISTANCE FOR BOTH BATTERY'S TEMP SENSORS WHEN CHECKED. WORK ACCOMPLISHED IAW MM 24-31-00
DURING THE 12 MONTH INSPECTION FOUND THE PRESENCE OF CORROSION ON THE FWD LH "CHIN FAIRING". REMOVED MILD CORROSION FROM LH FWD BELLY SKIN AT CHIN FAIRING. UPON CLEANING FWD LH CHIN FAIRING OF CORROSION, FOUND THAT THE CORROSION IS INTERGRANULAR. COMPLIED WITH NETJETS ERO-986223 REV.IR DATED SEP. 08, 2025. N388QS LH FWD FUSELAGE SKIN CORROSION.
DURING PRE FLIGHT FOUND NUMEROUS EMERGENCY LIGHTS OUT. TRIED CHARGING BATTERY PACK TWICE FOR THIRTY MINUTES EACH TIME WITH NO SUCCESS. NR 2 BATTERY PACK ON THE EMERGENCY LIGHTNING SYSTEM IS NOT HOLDING A CHARGE. EXTERIOR EMERGENCY LIGHTS ARE CONSIDERED INOPERATIVE. REMOVED EXISTING NR 4 BATTERY AND INSTALLED REPAIRED BATTERY IN SAME LOCATION. FUNCTIONAL CHECK OF EMERGENCY LIGHTS GOOD.
RH FLAP CLOSE-OUT PANEL RIB AND STRAP CORROSION.
RH FWD FUSELAGE HAS PRESENCE OF CORROSION AROUND AVIONICS DOOR. PERFORMED EDDY CURRENT INSPECTION FOR CRACKS AND CORROSION ON RH FWD FUSELAGE AROUND AVIONICS DOOR IAW CESSNA 680 NDTM PART 6 CHAPTER 20-00-02. NO CRACKS OR CORROSION NOTED DURING TIME OF INSPECTION. PERFORMED ULTRASONIC REMAINING THICKNESS INSPECTION ON RH FWD FUSELAGE AROUND AVIONICS DOOR IAW CESSNA 680 NDTM PART 4 CHAPTER 20-00-01. RECORDED REMAINING THICKNESS ON STRUCTURE. REFER TO SQUAWK 98-1 FOR ADDITIONAL DETAILS. COMPLIED WITH RFTS-113690 REV.0 DATED 29APR25. N388QS (680-0113) RH NOSE FUSELAGE SKIN CORROSION. THIS IS A PERMANENT MINOR REPAIR.
MAIN DOOR: DURING PREFLIGHT INSPECTION FOUND A CRACK NEXT TO THE AFT DOOR HINGE. CORRECTIVE ACTION; REMOVED PAINT AND SEALANT FROM THE HINGES TO VERIFY NO STRUCTURAL DAMAGE PRESENT. NO DEFECTS NOTED. AREAS WERE CLEANED OF SEALANT AND PAINT TO CONFIRM NO DAMAGE, NONE NOTED. ALL AREAS RESTORED/REPROTECTED. ALL WORK DONE IN REF TO CE-680 SPM 20-50-00
NOSE WHEEL WELL RH SIDE GOUGE (REF NJA RFTS-111517 REV - DATED 08/15/2024).
EMERGENCY LIGHTING: EMERGENCY LIGHTS OCCASIONALLY VERY DIM IN THE MORNING. AFTER CHARGING WITH APU POWER, THE LIGHTS WORK NORMALLY. BATTERY PACK ARE WEAK AND NEED EVALUATED. //SIGNOFF// REMOVED AND REPLACEDALLEMERGENCYBATIERYPACKSIAWCE680AMM33-50-10. PERFORMED RECHARGE PROCEDURE AND OPS CHECK. OPS CHECK. GOOD
MULTIPLE AREAS OF CORROSION FOUND ON RH HORIZONTAL UPPER AND LOWER SKIN CORROSION. THE NETJETS REQUEST FOR TECHNICAL SERVICE (RFTS) RFTS-110551 REV.0 DATED APRIL 04, 2024 WAS ACCOMPLISHED TO REPAIR UPPER AND LOWER RH HORIZONTAL SKIN.
CRACK FOUND ON LH UPPER SUPPORT BRACKET IN THE NOSE LANDING GEAR WHEEL WELL. ACCOMPLISHED NETJETS REQUEST FOR TECHNICAL SERVICES (RFTS) TEMPORARY REPAIR RFTS-110537 REV. 1 DATED MARCH 30, 2024. NOSE WHEEL WELL MID FRAME CRACK-FLY ON REPAIR.
MULTIPLE AREAS OF CORROSION FOUND ON LH HORIZONTAL UPPER AND LOWER SKIN CORROSION. THE NETJETS REQUEST FOR TECHNICAL SERVICES (RFTS) RFTS-110554 REV. 0 DATED APRIL 04, 2024 WAS ACCOMPLISHED TO REPAIR UPPER AND LOWER LH HORIZONTAL SKIN.
WITH MAIN BATTERIES OFF EMERGENCY EXIT LIGHT ABOVE GALLEY AT MAIN ENTRANCE IS INOPERATIVE. LIGHT ILLUMINATES WHEN BATTERIES TURNED ON. DUE TO INTERNAL FAILURE REMOVED & REPLACED #1 EMERGENCY LIGHTING BATTERY PN CBS28-1 SN 0391M WITH REPAIRED PN CBS28-1 SN 008693 IAW AMM 33-50-10.
ON DOING POWER ON CHECKLIST, INTERIOR EMERGENCY OVERHEAD LIGHT BEHIND PAX SEAT 4, GALLEY, MAIN STAIR ENTRANCE, INTERIOR OVERHEAD EXIT, MAIN ENTRANCE INTERIOR LT & RT EXITS, & ACFT FWD AISLE LIGHTS INOP. DURING THE FUNCTIONAL TEST IT WAS FOUND THAT NEWLY REPLACED #1 EMERGENCY LIGHTING POWER SUPPLY BATTERY (#2 IN SYSTEM) HAD NOT HAD G-SWITCH RE-SET, RE-SET G-SWITCH & REPEATED CHARGING PROCEDURE IAW AMM 33-50-10 AND CONDUCTED OPS CHECKED GOOD IAW AMM 33-50-10. NO OTHER DEFECTS WERE NOTED.
THE MAIN CABIN DOOR DROPS DOWN QUICKLY WHILE OPENING. OPS CHECK MAIN ENTRY DOOR AND CABLE TENSIONS IAW CE 680 AMM 52-10-50. CABLE TENSIONS ARE WITHIN LIMITS AND DOOR FUNCTIONS NORMALLY
WHILE PERFORMING TASK 57-00-00-2501 AN EDDY CURRENT INDICATION WAS FOUND IN THE CENTER SPAR LWS 6 FORWARD FASTENER HOLE IN THE SECOND LAYER OF MATERIAL. REMOVED FASTENER, REAMED HOLE OVERSIZE, PERFORMED NDT AND INSTALLED NEW FASTENER PER AQRD ENGINEERING REPAIR ORDER.
REPAIRED CORRODED AREA IN THE RH WING LOWER SKIN AT THE AFT SIDE MAIN LANDING GEAR WHEEL WELL OPENING, BY BLENDING, PERFORMING NDT, REPORTING FOR REPAIR DISPOSITION, FABRICATING AND INSTALLING REPAIR SHIMS AND DOUBLER IN ACCORDANCE WITH AEROSPACE QUALITY RESEARCH AND DEVELOPMENT MRO LLC ENGINEERING REPAIR ORDER
CABIN EMERG LIGHT: RH FOWARD OVERHEAD LIGHT DOES NOT ILLUMINATE DURING PREFLIGHT TEST. REMOVED AND REPLACED NO 1 EMERGENCY BATTERY PACK REF CE680 MM 33-50-10 OPS CHECK GOOD.
FORWARD EXIT PATH LIGHT INOP BOTH IN EMERG AND AISLE MODE. REMOVED DEFECTIVE STRIP LIGHT & INSTALLED CUSTOMER SUPPLIED NEW STRIP LIGHT. INSTALLED NEW STRIP LIGHT INTO VACANT POSITION. POWERED UP AIRCRAFT AND PERFORMED OPS CHECKS OF THE DROPPED ISLE LIGHTING. OPS CHECKS ARE GOOD. WORK DONE IAW AMM 33-20-00.
HYDRAULIC FLUID: HYDRAULIC VOLUME LOW CAS MESSAGE ILLUMINATED. GAUGE STABILIZED AT 60PSI AFTER PUMPS WERE UNLOADED. // SIGNOFF// UPON INITIAL INSPECTION FOUND RH HYDRAUUC PUMP PRESSURE UNE CHAFFING AGAINST AGB BREATHER TUBE. CHAFFING WAS SO SEVERE IT RUBBED A HOLE IN AGB BREATHER TUBE. SERVICED HYDRAUUC RESERVOIR TO RILL AND TURNM ON AUX PUMP AND NOTED NO HYDRAUUC LEAKS. WHILE DRY MOTORING RH ENGINE NOTED HYDRAUUC OIL SPRAYING FROM CRACK IN HYD PRESSURE LINE INTO AGB BREATHER TUBE WHERE BOTH UNES WERE CHAFFING. ALSO NOTED SEVERAL CLAMPS ON HYD PRESSURE/SUCTION UNES MISSING AND IN WRONG LOCATION. POO INSTALLED NEW RH ENGINE HYDRAUUC PRESSURE /SUCTION UNE AND NEW AGB BREATHER TUBE. REWORKED TUBE CLAMPS AND PLACED ALL CLAMPS IN CORRECT LOCATION. COMPLETED RH ENGINE HYDRAUUC PRESSURE LINE CLAMP LOCATION TC-000-29-200703M R6 08/19/2021. WILL MONITOR SHIPPING FOR RH ENGINE HYDRAUUC PUMP, RH ENGINE HYD PUMP ON BACKORDER. PER MCC, GAINED ACCESS AND CHECKED BOTH RH ENGINE HYDRAUUC MANIFOLD FILTERS AND MAIN HYDRAUUC MANIFOLD FILTERS WITH NO DEFECTS NOTED. AS A PRECAUTIONARY, REPLACED BOTH RH ENGINE HYD MANIFOLD FILTERS AND BOTH MAIN HYD MANIFOLD FILTERS. PER MCC, MOVE FORWARD WITH OPS/LEAK CHECKS WITHOUT REPLACNG RH ENGINE DRIVEN HYDRAUUC PUMP. 2/9 GAINED ACCESS TO LANDING GEAR CONTROL VALVE AND RESET VALVE. RESET GEAR UPLOCK SHUTTLE VALVES. SERVICED HYDRAUUC RESERVOIR TO RJU.. COMPLETED BLEEDING OF INBOARD/OUTBOARD BRAKES ON BOTH MAIN LANDING GEAR. RESERVICED HYDRAUUC RESERVOIR TO FUU.. PRIMED/BLED HYDRAUUC SYSTEM AND COMPI.ETED OPS CHECK WITH NO LEAKS NOTED. RH ENGINE DRIVEN HYDRAUUC PUMP BUILDS 3000PSI WITH NO CHATTERING NOTED. RESERVICED HYDRAULIC RESERVOIR TO FULL.. GAINED ACCESS TO EMERGENCY GEAR VENT LINE AND CLEARED VENT OF REMAINING HYDRAUUC FLUID. CLOSED ALL ACCESS. WORK COMPLETED WITH REFERENCE TO CE680 AMM 12-12-02, 12-13-01 AND 32-00-00
AFTER SHUTDOWN WE NOTICED THE TWO LEFT SIDE OVERHEAD EMERGENCY LIGHTS AND THE EXTERIOR BOARDING DOOR EMERGENCY LIGHT WERE ON WITH THE EMERGENCY LIGHT SWITCH IN THE OFF POSITION. THE AIRCRAFT WAS SHUT DOWN AND THE MAIN SHIP BATTERIES WERE OFF AND DISCONNECTED. APPLIED EXTERNAL POWER TO AC USING GPU. VERIFIED MED EMERGENCY LIGHT WAS ON. GAINED ACCESS TO EMERGENCY LIGHT BATTERY PACK #2 5G SWITCH AS REQUIRED . RESET EMERGENCY LIGHT BATTERY PACK #2 5G SWITCH. VERIFIED MED EMERGENCY LIGHT WAS OFF. RESTORED CABIN CARPET AS REQUIRED. REF. MM 33-50-10.
BATTERY OFF L AMBER CAS: ON DESCENT AND OUT OF FL 410 WITH REDUCED POWER, THE LEFT BATTERY TEMP INDICATOR EXCEEDED NORMAL TOLERANCES. THE TEMPERATURE WENT ABOVE 120 DEGREES CENTIGRADE AND FLUCTUATED BETWEEN 100 AND 170 DEGREES VERY RAPIDLY. WE DECLARED AN EMERGENCY, COMPLETED THE QRH FOR A BATT OVERTEMP L, AND LANDED WITHOUT INCIDENCE. AFTER LANDING AND UPON INSPECTION THE BATTERY WASNT HOT OR IN ANYWAY DEFORMED. // SIGNOFF// GAINED ACCESS TO AND INSPECTED LH MAIN SHIP BATTERY WITH NO DEFORMATION OR SIGNS OF OVERTEMP NOTED. REMOVED LH BATTERY AND INSPECTED SURROUNDING STRUCTURE WITH NO DEFECTS NOTED. INSPECTED LH BATTERY TEMP SENSOR CANNON PLUG AND WIRING HARNESS WITH NO DEFECTS NOTED. PERFORMED WIRING RING OUT OF LH BATTERY INTEGRTED TEMP SENSOR AND FOUND RESISTANCE VALUE TO DIFFER FROM REPLACEMENT BATTERY AND RH BATTERY TEMP SENSOR. REMOVED LH MAIN SHIP BATTERY AND INSTALLED OVERHAULED UNIT. CLEANED LH AND RH TEMP SENSOR CANNON PLUGS. PERFORMED APU RUN AND ALLOWED BATTERY'S TO CHARGE NO FLUCTUATION OR ERRONEOUS BATTERY TEMPS NOTED. LH BATTERY INDICATES ACTUAL TEMPATURE. SHUT DOWN AIRCRAFT AND CLOSED ALL ACCESS. OPS CHECK GOOD. WORK PERFORMED IAW CE680 AMM 24-31-00 AND CE680 WDM 24-32-01.
DURING AND AFTER APU START UP IN FLIGHT WITH APU BLEED OFF WE HAD AN ELECTRICAL SMOKE SMELL COMING FROM THE COCKPIT GASPERS. AFTER SHUTDOWN OF THE APU THE SMELL WENT AWAY. FOUND WIRE BUNDLE DAMAGED FROM APU BLEED DUCT COUPLING IN TAIL CONE. REMOVED SECTION OF APU BLEED DUCT AND REMOVED WATER SEPARATOR DUCTING TO GAIN ACCESS TO WIRE BUNDLE FOR EVALUATION. RESOLUTION: UPON INSPECTION FOUND FOUR WIRES EXHIBITING A BURNED/CHAFE APPEARANCE. DETERMINED THREE OF THE FOUR WIRES TO BE COSMETIC ISSUES, AS THE CENTER CONDUCTOR WAS NOT COMPROMISED. FOUND THE FINAL WIRE TO BE DAMAGED TO THE CENTER CONDUCTOR AND IS MARKED AS 1ET004-3PTO65B. DETERMINED THIS WIRE IS CURRENTLY UNUSED, REFERENCING THE CESSNA 680 WIRING DIAGRAM MANUAL 49-00-01 FIGURE 06 SHEET 3 AND THE CITATION STANDARD PRACTICES MANUAL 20-30-15. APPLIED HEAT SHRINK AND END CAP TO UNUSED (1ET004-3PTO65B) WIRE. REAPPLIED PROTECTIVE TAPE AND RESECURED WIRE BUNDLE, IN REF TO CESSNA STANDARD PRACTICES MAN. 20-30-15.
DURING AND AFTER APU START UP IN FLIGHT WITH APU BLEED OFF WE HAD AN ELECTRICAL SMOKE SMELL COMING FROM THE COCKPIT GASPERS. AFTER SHUTDOWN OF THE APU THE SMELL WENT AWAY. SIGN OFF. UPON INSPECTION FOUND FOUR WIRES EXHIBITING A BURNED/CHAFED APPEARANCE. DETERMINED THREE OF THE 4 WIRES TO BE COSMETIC ISSUE, AS THE CENTER CONDUCTOR WAS NOT COMPROMISED. FOUND FINAL WIRE TO BE DAMAGED TO THE CENTER CONDUCTOR AND IS MARKED AS 1ET004-3PT065B. DETERMINED THIS WIRE IS CURRENTLY UNUSED, REF THE CESSNA 680 WIRING DIAGRAM MANUAL 49-00-01 FIG, 06 SHEET 3 AND CITATION STANDARD PRACTICE MANUAL 20-30-15. APPLIED HEAT SHRINK AND END CAP TO UNUSED WIRE. REAPPLIED PROTECTIVE TAPE AND RESECURED WIRE BUNDLE, IN REF TO CESSNA STANDARD PRATICES MANUAL 20-30-15.
REPAIR OF CORROSION ON THE LOWER RIGHT AFT WING SPAR CAP AT WS 37. ENGINEERING REPAIR LETTER DQ25965RRL1 DATED JUNE 5, 2020.
MECHANICALLY BLENDED CORROSION ON THE LT WING AFT SPAR LOWER CAP APX 8 INCHES INBD OF W.S. 37.00, ACCESSIBLE THROUGH THE LT LANDING GEAR WHEEL WELL AREA. APPLIED GRIDS AND PERFORMED NDT, AND SUBMITTED FINDINGS TO ENGINEERING. PERFORMED BLEND, TREAT, PRIME REPAIR IAW FIELD REPAIR FR-680-0113-5037.
REPAIRED CORRODED AREAS ON THE RT UPPER WING SKINS, UNDERNEATH THE MIDDLE AND FORWARD WING-TO-FUSELAGE DRAG ANGLES, BY BLENDING, TREATING, AND PRIMING AFFECTED AREAS, REPLACING A CORRODED SKIN WITH NEW P/N 6922680-28 S/N NSN, AND INSTALLING AN OVER-SIZED FASTENER PER FIELD REPAIR FR-680-0113-4610 REVISION (-) APPROVED BY FAA FORM 8100-9 DATED 27 SEP 2017
DURING CRUISE AT FL400, LANDING GEAR UNLOCK LIGHT ILLUMINATED FOR APPROXIMATELY ONE MINUTE. DURING DESCENT THE LANDING GEAR UNLOCK LIGHT CAME ON & THE NOSE GEAR DOORS MADE AN ATTEMPT TO OPEN. JACKED AIRCRAFT, AND PERFORMED INITIAL GEAR SWINGS, NO DEFECTS WERE NOTED. OHMED ALL THREE GEAR UP LOCK SWITCHES. FOUND THE RT UPLOCK SWITCH TO HAVE AN ERRATIC & INTERMITTENT RESISTANCE OF UP TO 75OHMS BETWEEN PINS A&B. REMOVED THE RT MLG UPLOCK SWITCH AND INSTALLED A NEW UPLOCK SWITCH. PERFORMED GEAR SWINGS AND RIGGED SWITCH. OPS CHECKED GOOD IAW MM 32-60-00.
WITH APU RUNNING & BLEED AIR ON, SMOKE WAS ENTERING CABIN. RAN EACH ENGINE SEPARATELY WITH APU OFF & MECH ONBOARD, CABIN CLEARED & NO SMOKE OR ODOR NOTED. REMOVED AND REPLACED THE APU IAW MM 49-10-00. OPS AND LEAK CHECKED GOOD. RAN APU WITH BLEED AIR ON IN BOTH FULL HOT AND FULL COLD, NO SMOKE PRESENT IN COCKPIT OR CABIN.
LT GEAR WW HAS CORROSION ON SPAR AND LOWER SKIN. REPAIRED IAW S-680-0113/02RD.
ON DEPARTURE, SELECTED GEAR UP. LOUD WABBLING NOISE FROM NOSE GEAR FOLLOWED BY RED UNLOCK LIGHT. GEAR EXTENDED NORMALLY. REPLACED RT MLG UPLOCK SWITCH IAW MM 32-60-00.
AFTER MLG RETRACTION, UNLOCK LIGHT DID NOT EXTINGUISH. DOWN LIGHTS OUT GEAR UP. GEAR EXTENDED, LIGHTS ILLUMINATED & UNLOCK LIGHT OUT. OPS GEAR. COULD NOT DUPLICATE. COLD SOAKED UPLOCKS & OPS MLG. RED UNLOCK LIGHT WENT OUT EACH TIME. NR 1 GEAR PCB, LT UPLOCK WOULD INTERMITTENTLY SHOW NOT UPLOCKED. SWITCH CHECKED GOOD. SWITCHES RIGGED CORRECTLY. UPLOCK HOOKS FREE MOVING. NLG STRUT PRESSURE GOOD. UPLOCK SWITCH CHECKED GOOD. FOUND NLG ACTUATOR SPADE DOOR BACK .5 INCHES. REPOSITIONED NLG DOOR, CHECKED GOOD. OHMED ALL SWITCHES & GROUNDS, CHECKED GOOD. R & R BOTH MAIN UPLOCK SWITCHES, & NOSE SWITCH. RIGGED & OPS GEAR, CHECKED GOOD IAW MM 32-60-00.
LANDING GEAR UNLOCK LIGHT REMAINED ILLUMINATED AFTER GEAR RETRACTION. GEAR HANDLE WENT TO THE UP POSITION. FOUND NOSE GEAR ROLLER FROZEN AND DIFFICULT TO SPIN. ROLLER DISASSEMBLED AND CLEANED IAW MM 20-10-35. CYCLED GEAR, OPS CHECK GOOD. IAW MM 32-00-00.
(REPEAT WRITE-UP) RED GEAR "UNLOCK" LIGHT INITIALLY EXTINGUISHED WHEN RETRACTED GEAR DURING CLIMB-OUT, THEN CAME ON 5 MIN INTO FLIGHT. UPON EXTENDING, LIGHT WENT OUT AND GEAR EXTENDED NORMALLY. CHECKED ALL UPLOCK SWITCHES, HARNESS, & CONNECTORS, CHECKED MANUAL RELEASE CABLES, NO DISCREPANCIES NOTED. CHECKED AND SERVICED NOSE GEAR STRANG IAW MM 32-20-00-600.
RED GEAR "UNLOCKED" LIGHT REMAINED ON DURING FLIGHT. LANDING GEAR EXTENDED NORMALLY, RED GEAR "UNLOCKED" LIGHT EXTINGUISHED. (3) GREEN GEAR DOWN INDICATIONS WERE NORMAL. SERVICED NOSE STRUT TO PROPER INFLATION. PERFORMED MLG SYS UPLOCK SWITCH OPS CHECK SYS OPERATES NORMAL. WORK DONE IAW THE MM, CHAPTER 32-20-00-600 AND 32-60-00.
IN THE DESCENT, CABIN PRESSURE BEGAN TO CLIMB AT 6000 FPM THEN DESCEND AT 6000 FPM. DEPLOYED THE PAX OXYGEN MASKS AND INITIATED AN EMERGENCY DESCENT. (S)
WHILE CRUISING AT FL 340, ENTERED VIS MOISTURE. RAT* WAS APPROX-10* AND THE SAT * -30* , TURNED ON ENG/ STAB HEAT AND WING ANTI-ICE. APPROX 5 MINUTES LATER, ACFT HAD SLOWED TO MACH .69 AND THE " ENGINE FAULT" RT, THEN LT CAS MESSAGES ILLUMINATED THESE MESSAGES WERE ILLUMINATED FOR A FEW MINUTES, THEN EXTINGUISHED ACFT WAS LOSING POWER IN THE ICING ENVIRONMENT SO OPTED TO DESCEND. IN THE DESCENT, CABIN PRESSURE BEGAN TO CLIMB AT 6000 FPM THEN DECENT AT 6000 FPM PASSENGERS NOTED BURSTS OF HOT AIR COMING THROUGH VENTS. DEPLOYED PAX OXYGEN MASKS AND INITIATED AN EMERGENCY DESCENT FROM FL 280 AFTER DESCENT THROUGH 16000 FT MSL PRESSURIZATION STABILIZED, LANDED WITH OUT FURTHER INCIDENT. REPACKED OXY MASKS IAW MM 35-20-00. *NOTE: NOT ABLE TO SERVICE OXY BUTTON DUE TO NO MAINT FACILITY HERE. OXY READ ON GAUGE = 1250 PSI WHICH IS WITHIN LIMITS FOR OCF. RAN ACFT FOR PRESSURATION ISSUE. ALL BLEED SOURCES TEST NORMAL. OP'S NORMAL IAW MM 21-30-00 DOWN. RAN BOTH ENG'S, DOWNLOAD FAULT FILES AND SENT TO MFG. MFG STATED ENG'S WERE OPERATING WITHIN NORMAL LIMITS. NO FAULT CODES TO CONFIRM ANY ENG PROBLEMS ENG'S OP'S NORMAL IAW MM 77-00-00.
AFTER TAKEOFF AND UPON RAISING THE GEAR HANDLE, THE GEAR WOULD NOT COME UP. FOUND NOSE GEAR SQUAT SWTICH OUT OF ADJUST, READJUSTED SQUAT SWITCH, OPS CHECK GOOD AT THIS TIME IAW CE-680 MM 32-60-00.