N236QS

Part: APU — ODOR · airframe 10,166 hrs · 6,416 cycles

AIR CONDITIONING SMELLS LIKE DIRTY SOCKS. RAN APU FOR ONE HOUR. VERY WEAK OIL ODOR WHEN BLEED AIR IS FIRST TURNED ON. COMPLIED WITH ENGINE RUN UP AND TURNED ON BLEED AIR, STILL A VERY WEAK OIL ODOR NOTED. REMOVED AND REPLACED APU AND TURBOCOOLER IAW MM 49-10-01 AND 21-52-03. OPS AND LEAK CHECKED GOOD.

Part: NUT — CORRODED (FAN SHAFT) · airframe 9,413 hrs · 5,944 cycles

NR 2 ENGINE FAN SHAFT NUT IS DAMAGED FROM CORROSION. FOUND SHAFT NUT CORRODED. R & R CORRODED NUT FROM MAIN SHAFT. INSTALL NEW NUT IAW LMM 72-06-03, REV 7, & 72-70-02.

Part: ENGINE — MALFUNCTIONED (NR 1) · airframe 8,890 hrs · 5,628 cycles

IN CRUISE AT FL340, EXPERIENCED A LOUD VIBBRATION FROM THE NR 1 ENGINE AND A POWER ROLL BACK. FADEC ATTEMPTED ONE RE-LIGHT AND HEARD AN INCREASING, LOUDER VIBRATION AND PROCEEDED WITH A PRECAUTIONARY ENGINE SHUTDOWN WITH NO EXCEEDED ENGINE PARAMETERS NOTE. NORMAL SINGLE ENGINE LANDING AND TAXI. R & R NR 1 ENGINE IAW MM 71-00-01-900-801. OPS & LEAK CHECKED GOOD.

Part: APU — ODOR · airframe 8,827 hrs · 5,589 cycles

ON DESCENT AT ABOUT 25,000 FEET A STRONG ACRID SMELL WAS NOTICED PRIMARILY IN THE COCKPIT AND NOT THE CABIN. NO SMOKE WAS VISUALLY DETECTED. RAN APU AND ODOR WAS DETECTED. FOUND APU WAS JUST CHANGED 10-24-11 FOR OIL IN ECS SYS, SUSPECT DECONTAMINATION CHECK WAS NOT COMPLIED WITH. BORECOPED APU, CONDENSER, AND BEAT EXCHANGER WITH NO OIL NOTED. COMPLIED WITH DECONTAMINATION CHECK & RAN APU FOR 2 HOURS HOT WITH NO DEFECTS NOTED IAW MM 21-206.

Part: SKIN — LOOSE (FUSELAGE) · airframe 8,754 hrs · 5,544 cycles

EXPERIENCED A LOW FREQUENCY CONTINUOUS & SOMETIMES PULSATING VIBRATION DURING CLIMB & DECENT. OCCURRED AT ABOUT FL 200 UNTIL CRUISE. STARTING ABOUT 280KT IAS & CONTINUING UNTIL ABOUT .82M. IN CRUISE, SEEMED TO DIMISH ABOVE .82M & REOCCURED ABOUT .78M SLOWING. SOUND SIGNIFICANTLY LOUDER IN REAR OF ACFT & SEEMED TO BE LOCATED BENEATH CABIN FLOOR. FOUND SCREWS LOOSE ON SKIN PANEL. RETORQUED LOOSE SCREWS. CLEANED OUTFLOW VALVES & MANOMETRIC BOX INLETS. PERFORMED VIBRATION SURVEY ON LT & RT ENGINES. PERFORMED BOROSCOPE INSPECTION OF NR 2 ENGINE FIRST STAGE COMPRESSOR. NO DEFECTS FOUND. BORESCOPE OF RT ENGINE & VIBRATION SURVEY PERFORMED & FOUND WITHIN LIMITS IAW MM 72-00-00.

Part: UPLOCK — MALFUNCTIONED (NLG) · airframe 7,818 hrs · 4,965 cycles

AFTER TAKEOFF, DURING LANDING GEAR UP, WE GOT A GEAR UNSAFE INDICATION ALL (3) RED LIGHTS AND A FLASHING RED GEAR HANDLE. RETURNED TO AIRPORT GEAR DOWN WITH ALL INDICATIONS NORMAL (3) GREEN NO RED. REPLACED DEFECTIVE NLG UPLOCK ASSY IAW MM 32-322. OPS AND LEAK CHECKS GOOD.

Part: PIN — WORN (NLG) · airframe 7,627 hrs · 4,829 cycles

(ORIGINAL SUBMISSION DATE: 02/24/2010) AFTER TAKEOFF, WHEN THE GEAR WAS SELECTED UP, A LOUD BANGING NOISE WAS HEARD ON LWR LT SIDE OF CAPTAINS SEAT AND SIDE PANEL. BANGING NOISE WAS CONSTANT UNTIL EXCELERATED PAST 160 KNOTS WHERE THE NOISE BECAME LOUDER BUT WITH A WATER SLOSHING SOUND FROM UNDER THE FLOORBOARD. ALL THE GEAR INDICATORS WHERE NORMAL IN THEIR CYCLE AND ALL AIRSPEED, ALTIMETER AND INDICATORS WERE NORMAL WITH NO FLAGS OR WARNINGS. UPON LANDING THE NOISE STOPPED UPON DROPPING THE GEAR THROUGHOUT THE LANDING PHASE. AFTER LANDING AND COMING TO A COMPLETE STOP OFF THE RUNWAY AND ON THE TAXIWAY THE ACFT WAS INSPECTED AND NOTHING ABNORMAL WAS NOTED ON THE OUTSIDE OF THE FUSELAGE NOR IN THE NOSE WHEEL GEARWELL. CONDITIONS WERE HEAVY RAIN THROUGH OUT ALL PHASES OF FLIGHT. (UPATED: 04/29/2010) REPLACED NLG DOOR ROD PINS DUE TO EXCESSIVE FREE PLAY. SERVICED NLG STRUT WITH NITROGEN.

Part: MONITOR — ODOR (CABIN) · airframe 7,309 hrs · 4,644 cycles

PAX SMELLED SMOKE NEAR THE SIDE VALANCE AT THE MID CABIN. BURNING ODOR SEEMED TO GO AWAY WHEN LIGHTS WERE TURNED OFF. NO ODOR NOTICED IN REAR BAGGAGE, JUST IN MID CABIN AREA. REMOVED AND REPLACED CABIN MONITOR PER MM 25-000. OPS CHECK GOOD.

Part: AUTOPILOT SYS — MALFUNCTIONED · airframe 6,750 hrs · 4,297 cycles

AUTOPILOT DISCONNECTED 6 TIMES IN 30 MINUTES.

Part: ADC — FAULTY (NR 2) · airframe 6,750 hrs · 4,297 cycles

AUTOPILOT DISCONNECTED 6 TIMES IN 30 MINUTES. REF GDAS-PBI WO NR SC1004 8.2 AND A150 ADC R&I M2B FOR FURTHER DETAILS. PERFORMED AUTOPILOT FUNCTIONAL CHECKS IAW MM 22-100 WITH NO DEFECTS NOTED. AUTOPILOT SYS WAS ENGAGED FOR ONE HOUR WITH NO FAILURES. REMOVED NR 2 ADC PN 8220374-412, SN 18AB. INSTALLED OVERHAULED ADC PN 822037412 SN 1RAF PERFORMED OPS CHECK AND LEAK CHECK. NO DEFECTS FOUND AT THIS TIME. ADC AND STATIC CHECKS REQUIRED BY FAR PART 91.411 INCLUDING APPENDIX 6 GUIDE LINES FOR RVSM HAVE BEEN PERFORMED. NR 2 ADC HAS BEEN TESTED TO 50,000 FT ON NR2 ADC PN 8220314-412 SN 1RAF. CERTIFICATION THAT THE ATC TRANSPONDER TEST AND INSPECTION REQUIRED BY FAR 91.413 HAVE BEEN PERFORMED AND MEET THE REQUIREMENT OF FAR PART 43 APP. F. NR2 ADC WAS REPLACED UNDER ITEM 8.2 OF THIS WO NEEDS AUTOPILOT CHECK. PERFORMED AUTOPILOT CHECKS IAW MM 22-100 WITH NO DEFECTS NOTED. AUTOPILOT SYS WAS ENGAGED FOR ONE HOUR WITH NO FAILURES. DOWNLOADED FAULT CODES. AP DISCONNECT CODES REPORTS AIR DATA MISCOMPARE INVALID. NR2 ADC WAS REPLACED UNDER ITEM 8.2 OF THIS WO NEEDS AUTOPILOT CHECK. PERFORMED AUTOPILOT CHECKS IAW MM 22-100 WITH NO DEFECTS NOTED. AUTOPILOT SYS WAS ENGAGED FOR ONE HOUR WITH NO FAILURES.

Part: BRAKE ASSY — MALFUNCTIONED (MLG) · airframe 4,368 hrs · 2,771 cycles

DURING OCF AT 80KTS WHEN BRAKES APPLIED, LEFT TOE BRAKE -MORE PEDAL TRAVEL- AND AIRCRAFT PULLS HARD LEFT. ITEM IS UNDER INVESTIGATION.

Part: WARNING LIGHT — INOPERATIVE (LT MLG WW)

LEFT HAND WHEELWELL OVERHEAT WARNING LIGHT CAME ON DURING DESCENT.