Cessna 550

Service difficulty reports · 988

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duckdb -csv -c "SELECT sdr_id, difficulty_date, n_number, aircraft_make, aircraft_model, part_name, part_condition, jasc_code, discrepancy
  FROM 'https://openairdocs.org/data/latest/faa_service_difficulty_report.parquet'
  WHERE aircraft_model_key = '550'
  ORDER BY difficulty_date DESC"

Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.

SDR 97ZZZX354Switch · failedFLIGHT CREW REPORTED NO 'SURFACE DE-ICE' LIGHT WHEN DE-ICE BOOTS INFLATED. DETERMINED WING AND TAIL DE-ICE BOOT PRESSURE SWITCHES DEFECTIVE, MOST LIKELY DUE TO WATER CONTAMINATION. SUBMITTER SUGGESTS SWITCHES NEED TO BE INSTALLED IN A POSITION THAT WILL LIMIDec 14, 1996 · N6862Q · Cessna 550 · Airfoil Anti/De-ice SystemSDR 97ZZZX353Switch · failedFLIGHT CREW REPORTED NO 'SURFACE DE-ICE' LIGHT WHEN DE-ICE BOOTS INFLATED. DETERMINED WING AND TAIL DE-ICE BOOT PRESSURE SWITCHES DEFECTIVE, MOST LIKELY DUE TO WATER CONTAMINATION. SUBMITTER SUGGESTS SWITCHES NEED TO BE INSTALLED IN A POSITION THAT WILL LIMIDec 14, 1996 · N6862Q · Cessna 550 · Airfoil Anti/De-ice SystemSDR CA961218018Capacitor · shorted(CAN) A NOISE FILTER FOR THE LT STARTER GENERATOR BURNED AND WAS FOUND DURING A PHASE 5 INSPECTION. A SMALL BUT INTENSE FIRE HAD BURNED SURROUNDING WIRING AND RETAINING BRACKET WAS DEFORMED FROM THE BURN. THE OIL FROM THE CAPACITOR COVERED THE WIRING AROUND Dec 11, 1996 · Cessna 550 · DC Generating SystemSDR CA961205019Gearbox · failed(CAN) WHILE COMPLYING WITH SB 550-27-16, AND AFTER REMOVAL OF BOTH GEARBOXES, ONE COULD BE TURNED FREELY WITHOUT OUTPUT SHAFT TURNING.Dec 2, 1996 · Cessna 550 · Trailing Edge Flap Control SystemSDR CA961118006Locking Bolt · low torque(CAN) DURING DISASSEMBLY FOR HSI ABOUT 1/4 CUP OF CARBON GRANUALS WERE REMOVED FROM THE LP TURBINE SHAFT INCLUDING A RING OF CARBON AROUND THE INTERSHAFT OIL TRANSFER TUBE. THE SECURING BOLT WAS UNSTAKED AND WHEN A SOCKET WAS APPLIED TO REMOVE THE BOLT, A TORQNov 14, 1996 · Cessna 550 · Turbine SectionSDR 96ZZZX5971Rib Strap · misinstalledLEFT WING RIB AT WS 91 UPPER STRAP IS JOGGLED TO FIT BETWEEN SPAR AND RIB. ASSEMBLY AT FACTORY PUT STRAP ABOVE SPAR, CREATING A 0.050 INCH BUMP IN WING. SUBMITTER STATES CESSNA RESEARCHED AIRCRAFT BUILD RECORDS AND COULD NOT FIND ANYTHING SHOWING WHY THIS WANov 10, 1996 · N101KK · Cessna 550 · Wing, Rib/BulkheadSDR 96ZZZX5736Window · crackedDURING PRISM INSPECTION OF CO-PILOT'S WINDOW, FOUND 4 FASTENER HOLES CRACKED AT UPPER FORWARD. CRACK CONNECTS CENTER 2 FASTENERS. WINDOW IS TO BE REPLACED.Nov 1, 1996 · N84EA · Cessna 550 · Flight Compartment WindowsSDR 96ZZZX5604Cotter Pin · wornON CLIMB-OUT AFTER TAKEOFF, RT ENGINE OIL TEMPERATURE BEGAN TO RISE AND PRESSURE BEGAN TO FALL. PILOT IMMEDIATELY SHUT DOWN RT ENGINE AND RETURNED TO AIRPORT WHERE AN UNEVENTFUL LANDING WAS MADE. LOSS OF ENGINE OIL WAS DISCOVERED TO BE COMING FROM THE NR 4 BOct 23, 1996 · N6846T · Cessna 550 · Engine Emergency Shutdown SystemSDR 96ZZZX5634Inverter · failedINVESTIGATION FOR A DOUBLE INVERTER FAILURE FOUND OPTIC COUPLER IN PHASE LOCK CIRCUIT FALIED. WITH COUPLER FAILED FREQ OUTPUT UNREGULATED, CAUSING PHASE LINK TO DISCONNECT THE OTHER INVERTER. PHASE LINK NOT PROTECTED BY FAULT MONITOR AND CAN FAIL BOTH INVERTOct 21, 1996 · N24E · Cessna 550 · AC InverterSDR 97ZZZX216Switch · inoperativeLOSS OF HYDRAULIC POWER BRAKE SYSTEM. MICROSWITCH FAILED. AIRCRAFT LANDED SAFELY WITHOUT POWER BRAKE SYSTEM.Oct 18, 1996 · N217FS · Cessna 550 · Landing Gear Brake SystemSDR CA961028007Switches · defective(CAN) GEAR SELECTED UP, RED IN TRANSIT LIGHT STAYED ON AND HYDRAULIC PRESSURE LIGHT ON. NOSE RETRACTED, BUT MAIN DID NOT. HYDRAULIC LIGHT THEN WENT OUT. BOTH MAIN LANDING GEAR DOWNLOCK GREENS CAME ON. GEAR SELECTED DOWN PRIOR TO LANDING AND ALL 3 GEARS DOWOct 15, 1996 · Cessna 550 · Landing Gear Position and WarningSDR 96ZZZX5269Connector · miswiredPILOT REPORTED 'GEAR UNSAFE' LIGHT REMAINS 'DIMLY' LIT AFTER GEAR UP WITH PANEL LIGHTS ON. FOUND WIRE 'D41' FROM GEAR UNSAFE LIGHT ASSY PINNED INTO 'F2' INSTEAD OF 'A2' OF CONNECTOR J3A AS SCHEMATIC SHOWS ON P3A SIDE, WIRE IDENTIFIED AS F2P3APP4 WAS PINNED IOct 1, 1996 · N2734K · Cessna 550 · Landing Gear Position and WarningSDR 96ZZZX5353Oil Pump · weakLEFT ENGINE SHOWED EVIDENCE OF HIGH OIL CONSUMPTION. TROUBLESHOOTING REVEALED WEAK SCAVENGE OIL PUMP. OIL PUMP WAS REMOVED AND REPLACED WITH OVERHAULED UNIT AND OPERATION RETURNED TO NORMAL.Sep 30, 1996 · N245CC · Cessna 550 · Turbine Engine Oil SystemSDR 96ZZZX5546Periseal · brokenPILOT REPORTED FIRE WARNING LIGHT CAME ON IN-FLIGHT. THROTTLE WAS REDUCED AND LIGHT WENT OUT. TROUBLESHOT SYSTEM AND FOUND BROKEN PERI-SEAL ON INBOARD SIDE OF LEFT ENGINE ALLOWED BLEED AIR TO BLOW ON FIRE LOOP. NO ADDITIONAL PROBLEM FOUND. REPLACED 2 PERI-Sep 26, 1996 · N8415A · Cessna 550 · Pneumatic Distribution SystemSDR 96ZZZX5150Coupling · overtorqueWHILE PERFORMING MAINTENANCE TO ACM, COUPLING (V-BAND CLAMP) WAS FOUND SEVERELY OVERTORQUED ALMOST TO THE POINT OF FAILURE. CLAMP WAS REPLACED USING CORRECT TORQUE, OPS CHECK GOOD. SUBMITTER RECOMMENDS MAINTENANCE PERSONNEL ADHERE TO PROPER CLAMP TORQUE PROCSep 20, 1996 · N5314J · Cessna 550 · Cabin Cooling SystemSDR 96ZZZX5072Relief Valve · leakingUPON ACTIVATION OF GEAR BLOW-DOWN TO TEST NEWLY INSTALLED BOTTLE, AFTER 3 GREENS WERE OBTAINED THE BODY OF THE RELIEF VALVE WAS LEAKING AROUND SEAM QUICKLY DEPLETING SUPPLY OF NITROGEN. THIS OCCURRED ON 3 BOTTLES IN A ROW FROM SAME VENDOR.Sep 18, 1996 · N602AT · Cessna 550 · Landing Gear Retraction/Extension SystemSDR 96ZZZX5260Bolt · wrong partDURING PHASE 5 INSPECTION, FOUND INCORRECT BOLT AND NUTS INSTALLED IN RUDDER TORQUE TUBE WHERE IT ATTACHED TO BELLCRANK. THREE DIFFERENT TYPES OF LOCKING NUTS USED IN PLACE OF CASTLE NUTS THAT ARE REQUIRED. MOST LIKELY INSTALLED BY PAINT SHOP WHEN AIRCRAFT WSep 17, 1996 · N6862Q · Cessna 550 · Rudder Control SystemSDR 96ZZZX5268Slide Assy · splitWHILE ACCOMPLISHING A PHASE INSPECTION, FLIGHT CONTROL GUST LOCK WAS ENGAGED AND FOUND SLOPPY AND OUT OF RIG. FURTHER INVESTIGATION FOUND THE GUST LOCK SLIDE ASSY HAD SPLIT IN HALF WHERE THE RT ELEVATOR CABLE PASSES THROUGH. ONLY THE FORWARD SIDE OF THE SLIDSep 10, 1996 · N1886G · Cessna 550 · Gust Lock Damper SystemSDR 96ZZZX5261Transducer · inoperativeDURING MAINTENANCE INSPECTION, NOTED THAT ANTI-SKID SYSTEM WAS INOPERATIVE. TROUBLESHOOTING OF SYSTSEM SHOWED LEFT WHEEL SPEED TRANSDUCER INOPERATIVE. TRANSDUCER REPLACED WITH OVERHAULED UNIT AND SYSTEM WORKED WITHIN LIMITS.Sep 9, 1996 · N245CC · Cessna 550 · Brake Anti-Skid SectionSDR CA960923003Seal · malfunctioned(CAN) DURING FLIGHT AT 5,000 FEET ASL, FLIGHT CREW NOTICED A GRADUAL LOSS OF CABIN PRESSURIZATION UNTIL THE AIRCRAFT CABIN ALTITUDE MATCHED AIRCRAFT ALTITUDE. AIRCRAFT RETURNED TO BASE UNPRESSURIZED. AIRCRAFT PRESSURIZATION SYSTEM GROUND CHECKED WITHOUT FAULSep 4, 1996 · Cessna 550 · Passenger/Crew DoorsSDR CA960909031Door Seal · failed(CAN) AT FL 350, ONE HOUR INTO FLIGHT, DOOR SEAL BLEW. CABIN ALTITUDE CLIMBED RAPIDLY TO 18,000 FEET. REPLACED CABIN DOOR SEAL DUE TO SUSPECTED MOISTURE AND FREEZING, THEREFORE, BLOCKING THE SUPPLY OF AIR TO KEEP THE DOOR SEAL INFLATED. ENTIRE SEAL INFLATIONAug 28, 1996 · Cessna 550 · Passenger/Crew DoorsSDR 97ZZZX1168Controller · misoverhauledACFT CLLIMBED TO FL 260. CREW NOTICED A DISCREPANCY IN THE CABIN PRESSURE DIFFERENTIAL, ALTITUDE AND CONTROLLER INDICATION. AFTER INVESTIGATION AND COMPARISON WITH ANOTHER ACFT, IT WAS FOUND DURING OVERHAUL THE INCORRECT FACE HAD BEEN INSTALLED ON THE RATE CJul 30, 1996 · N26621 · Cessna 550 · Pressure Regulator/Outflow ValveSDR 96ZZZX4339Bumper Pad · defectivePILOTS REPORTED LT REVERSER WOULD INTERMITTENTLY 'HANG UP' WHILE OPENING, BUT CLOSE AND LOCKING WERE NORMAL. 319.7 HRS, 490 CYCLES PRIOR TO THIS OCCURRENCE, ROHR SB CIT 78-8R1 WAS C/W WHICH INSTALLS NEW DOOR BUMPERS OVER OLD BUMPERS. THIS DECREASES CLEARANCEJul 29, 1996 · N87SF · Cessna 550 · Engine Thrust ReverserSDR 96ZZZX4338Bumper Pad · defectivePILOTS REPORTED LT REVERSER WOULD INTERMITTENTLY 'HANG UP' WHILE OPENING, BUT CLOSE AND LOCKING WERE NORMAL. 319.7 HRS, 490 CYCLES PRIOR TO THIS OCCURRENCE, ROHR SB CIT 78-8R1 WAS C/W WHICH INSTALLS NEW DOOR BUMPERS OVER OLD BUMPERS. THIS DECREASES CLEARANCEJul 29, 1996 · N87SF · Cessna 550 · Engine Thrust ReverserSDR CA960807006Brake Stator · fractured(CAN) LEFT HAND BRAKE STATOR LOCATED NEAREST THE PRESSURE PLATE FRACTURED IN MULTIPLE LOCATIONS AT THE RELIEF SLOTS/KEYWAYS. THE BROKEN SEGMENT OF THE ROTOR DROPPED DOWN AND JAMMED THE WHEEL.Jul 28, 1996 · Cessna 550 · Landing Gear Brake SystemSDR 96ZZZX3867Fan · motor failedDEFOG FAN FAILED IN-FLIGHT FILLING CABIN WITH SMOKE. DEFOG AND OVERHEAD FANS ARE ON SAME CIRCUIT WHICH ALLOWS CONTINUED POWER TO FAILED UNIT WITHOUT TRIPPING CIRCUIT BREAKER. EMERGENCY DESCENT INITIATED AND LANDED SAFELY. RECOMMEND SB TO SPLIT CIRCUIT AND IJul 15, 1996 · N6763L · Cessna 550 · Windshield/Door Rain/Ice RemovalSDR CA960923002Valve · failed(CAN) AIRCRAFT EN ROUTE WHEN PRESSURE BEGAN DECREASING AT UNCONTROLLABLE RATE. OXYGEN MASKS DEPLOYED AND DONNED, AIRCRAFT LANDED SAFELY AT ALTERNATE SITE. MAINTENANCE FOUND MOISTURE TRAPPED IN DOOR SEAL AIR SUPPLY LINE. PURGED AIR USING LT ENGINE TO SUPPLY Jul 8, 1996 · Cessna 550 · Passenger/Crew DoorsSDR 96ZZZX3824Engine · failedAIRCRAFT EXPERIENCED AN AIRFRAME RUMBLE FOLLOWED BY A FAN SPEED INDICATION GOING DOWN FOLLOWED BY ANOTHER RUMBLE. RIGHT ENGINE SHUT DOWN AND AN UNEVENTFUL LANDING MADE. MAINTENANCE REPORTED FAN VERY DIFFICULT TO TURN BY HAND. ENGINE REMOVED FOR TEAR DOWN INJul 3, 1996 · N511WC · Cessna 550 · Engine (Turbine/Turboprop)SDR CA960724402Data Base · error(CAN) WHEN DOING A FLIGHT MANAGEMENT SYSTEM APPROACH, FMS DISENGAGED AND STEERING COMMANDS WENT OFF THE SCREEN. PILOT UNABLE TO RE-ENGAGE APPROACH. AIRCRAFT PERFORMED CORRECTLY ON NORMAL APPROACH (ILS). WHILE UNDER INVESTIGATION, MANUFACTURER CONTACTED AND Jun 21, 1996 · Cessna 550 · Flight Management Computing Hardware SystemSDR AU960882Duct · leaking(AUS) RH ENGINE FIRE WARNING SYSTEM ACTIVATED - INVESTIGATION COULD FIND NO FAULTS EXCEPT FOR A FEW MINOR LEAKS FROM THE BLEED AIR DUCTS WHICH MAY OR MAY NOT HAVE CAUSED THE FIRE WARNINGJun 21, 1996 · Cessna 550 · Engine Bleed Air SystemSDR CA960923026Door Seal · leaking(CAN) PILOT REQUESTED RAPID DESCENT TO 10,000 FEET AND ADVERSION TO ALTERNATE LANDING SITE. PILOT REPORTED DOOR SEAL LEAKING AND A SLOW DEPRESSURIZATION. RUN-UP RT ENGINE AND WITH DOOR OPENED, DEPRESSED THE PLUNGER FOR THE DOOR SEAL VALVE AND ALLOWED THE SYSJun 19, 1996 · Cessna 550 · Passenger/Crew DoorsSDR 96ZZZX3014Frame · crackedDURING REMOVAL OF PILOT'S WINDSHIELD TO INSTALL A NEW WINDSHIELD, APPROXIMATELY 3 CRACKS WERE FOUND IN THE SIDE WINDOW FRAME, THE LARGEST OF WHICH WAS APPROXIMATELY 2.5 INCHES LONG AND HAD BEEN PREVIOUSLY STOP DRILLED. THERE WERE ALSO NUMEROUS DEEP GOUGES ANDMay 28, 1996 · N80AW · Cessna 550 · Fuselage Miscellaneous StructureSDR 96ZZZX3522Stiffener · crackedTHIS PART HAS BEEN FOUND CRACKED IN EACH OF FOUR 550'S. THE CRACKS ARE LOCATED ON THE FLANGES OF THE STIFFENER AND ARE VERY MINUTE. SUBMITTER STATED NOT SURE WHAT THE CAUSE OF THESE CRACKS ARE, THEY ARE ALL IN THE SAME LOCATION AND CAN BE SEEN BY LOOKING UP May 24, 1996 · N26496 · Cessna 550 · Wing Miscellaneous StructureSDR CA960620006Junction Box · mis wired(CAN) WHILE PERFORMING A ROUTINE PHASE 5 INSPECTION, THE TECHNICIAN FOUND THAT IMPROPER WIRING PROCEDURES WERE FOLLOWED DURING MANUFACTURE OF THE THRUST REVERSER JUNCTION BOX P/N 5538328-16 REF. IPC 78-30-03. IT WAS NOTED THAT SEVERAL WIRES WERE INCORRECTLY ROMay 23, 1996 · Cessna 550 · Engine Thrust ReverserSDR CA960620011Quadrant Switch · broken wiring(CAN) ON THIS AIRCRAFT AND 4 OTHERS, THROTTLE QUADRANT SWITCHES S153, S161, S154 AND S162 WHICH CAUSE THRUST REVERSER TO STOW OR DEPLOY, HAVE FAILED. CAUSE WAS FOUND TO BE BECAUSE THE SWITCHES ARE MOUNTED ON THE MOVING THROTTLE WHERE THE WIRING IS CONTINUOUSLYMay 22, 1996 · Cessna 550 · Engine Thrust ReverserSDR 96ZZZX2959Spar · corrodedUPON REMOVING A SKIN PANEL FROM RT WING AFT OF LANDING GEARWELL TO FACILITATE REPAIR OF SMALL CRACKS IN WING SKIN, DISCOVERED CORROSION ON LOWER AFT SPAR CAP FROM WING ROOT TO WS 74.5. REMOVED CORROSION FROM AFFECTED AREAS OF SPAR CAP AFTER CONTACTING CESSNA May 16, 1996 · N45ME · Cessna 550 · Wing SparSDR CA960529004Fuel Contrl Unit · blocked orifice(CAN)DURING A SIMULATED ENGINE FAILURE, THE #2 ENGINE RETARDED TO IDLE. AFTER THE EXERCISE TERMINATED, THE THROTTLE WAS ADVANCED TO RESTORE POWER BUT THE ENGINE FAILED TO RESPOND. BLOCKED PC AIR ORIFICE INTHE FCU. THIS ENGINE HAD UNDERGONE HOT SECTION INSPECTIMay 15, 1996 · Cessna 550 · Fuel Controlling SystemSDR 96ZZZX3832Battery · overheatBATTERY TEMPERATURE ROSE TO AN OVERHEAT CONDITION WITHIN 30 MINUTES AFTER DEPARTURE. CORRECTIVE PROCEDURE ISOLATED BATTERY FROM GENERATOR CONTINUING TO HEAT BATTERY. BATTERY EXAMINED BY MAINTENANCE TECH AND DISCOVERED TO HAVE BAD CELLS. BAD BATTERY REPLACED May 4, 1996 · N7ZU · Cessna 550 · Battery/Charger SystemSDR 96ZZZX2782Brake Assy · wrong diskINSTALLED STC SA 4954NM, CLEVELAND WHEELS AND BRAKES. AFTER 1 LANDING, THE BRAKES ALMOST LOCKED UP. BOTH BRAKES: AFTER INSPECTION, FOUND DISKS FROZEN IN WHEELS. THE DISKS WERE FOUND TO BE THE WRONG TYPE TO BE INSTALLED. BOTH BRAKES WERE NEW AND ASSEMBLED May 1, 1996 · N533MA · Cessna 550 · Landing Gear Brake SystemSDR 96ZZZX2781Brake Assy · wrong diskINSTALLED STC SA 4954NM, CLEVELAND WHEELS AND BRAKES. AFTER 1 LANDING, THE BRAKES ALMOST LOCKED UP. BOTH BRAKES: AFTER INSPECTION, FOUND DISKS FROZEN IN WHEELS. THE DISKS WERE FOUND TO BE THE WRONG TYPE TO BE INSTALLED. BOTH BRAKES WERE NEW AND ASSEMBLED May 1, 1996 · N533MA · Cessna 550 · Landing Gear Brake SystemSDR 96ZZZX2245Diode · burnedAIRCRAFT RETURNED TO MAINTENANCE WHEN COCKPIT FILLED WITH SMOKE SHORTLY AFTER TAKEOFF. AOA HEATER CIRCUIT BREAKER TRIPPED AND WOULD NOT RESET. INVESTIGATION REVEALED TWO DIODES IN AOA HEAT CIRCUIT TOUCHING GROUND THROUGH RIGHT PITOT STATIC HEAT SWITCH. A REApr 10, 1996 · N777FL · Cessna 550 · Stall Warning SystemSDR 96ZZZX2098Oil Pump · defectiveRIGHT ENGINE WOULD SMOKE DURING ENGINE START. TROUBLSHOOTING SHOWED OIL SCAVAGE PUMP WAS WEAK. REMOVED AND REPLACED OIL PUMP ASSY. SB 7185 HAD BEEN C/W.Mar 29, 1996 · N245CC · Cessna 550 · Turbine Engine Oil SystemSDR CA960321001Speed Monopole · open circuit(CAN) AFTER INSTALLATION OF AN OVERHAULED STARTER/GENERATOR, INITIAL GROUND RUN OPERATION SEEMED SATISFACTORY, HOWERVER SUBSEQUENT FLIGHTS REVEALED THAT THE STARTER WOULD NOT DISENGAGE AUTOMATICALLY. THE START SEQUENCE WAS MANUALLY DISENGAGED AND THE FLIGHT COMar 7, 1996 · Cessna 550 · Starter-GeneratorSDR 96ZZZX1157Skin · crackedAFTER AIRCRAFT WAS STRIPPED FOR PAINT JOB, SKIN CRACK FOUND ON UPPER RIGHT WING SURFACE AT WS 49.0, CRACK MEASURED 3 INCHES 'DIAGONALLY' PASSING THROUGH RIVETS THAT ATTACH FLAP BELLCRANK SUPPORT. ONE-THIRD OF HEAD OF MIDDLE RIVETS SHEARED. CESSNA ENGINEERINGFeb 17, 1996 · N26621 · Cessna 550 · Wing, Plate/SkinSDR 96ZZZX1956Turbine · damagedAT THE CUSTOMER'S REQUEST, A BORESCOPE INSPECTION OF THE HIGH PRESSURE TURBINE, IMPELLER, AND THE NR 4 BEARING WAS PERFORMED. THE HIGH PRESSURE TURBINE SHOWED SIGNS OF FOD DAMAGE. REMOVED THE ENGINE'S HOT SECTION AND FOUND THE H.P. TURBINE DAMAGED. THE DIFFFeb 16, 1996 · N402ST · Cessna 550 · Turbine SectionSDR CA960304008Cable · defective(CAN) BOTH FORWARD THROTTLE CABLE ASSEMBLIES FOUND TO BE RETAINING MOISTURE. IN EXTREME COLD CONDITIONS, BOTH ASSEMBLIES PROGRESSIVELY STIFFENED, RESTRICTING THROTTLE MOVEMENT. WHEN CABLES WERE COLD SOAKED, THEY WOULD EVENTUALLY SEIZE CABLES TO THE POINT WHEREFeb 8, 1996 · Cessna 550 · Power LeverSDR 96ZZZX1373Tach Generator · improper partTHE LT ENGINE N1 TACHOMETER GENERATOR DID NOT RESEMBLE THE OTHER TACHOMETER GENERATORS. INVESTIGATION FOUND VENDOR-ADVANCE POWER, INC., IS NOT AN APPROVED CESSNA/CITATION VENDOR FOR THIS PART. ENGINE LOG BOOK SHOWS A CITATION PART NUMBER WHEN THIS UNIT WAS IJan 24, 1996 · N114DS · Cessna 550 · Engine RPM Indicating SystemSDR 96ZZZX842Antirotate Ring · failedAFTER ENGINE START, ENGINE SOUNDED STRANGE (LIKE VACUUM CLEANER). TROUBLESHOT AND SUSPECTED INTERNAL DAMAGE. ENGINE REMOVED AND SENT FOR OVERHAUL. FOUND THE ANTI-ROTATION RING HAD FAILED.Jan 16, 1996 · N511AB · Cessna 550 · Turbine Engine Compressor SectionSDR 96ZZZX829Blade · failureENGINE SOUNDED STRANGE AFTER START. TROUBLESHOT TO ENGINE INTERNAL. SENT OUT FOR OVERHAUL. FOUND 3 HT BLADES FAILED.Jan 16, 1996 · N120JP · Cessna 550 · Turbine SectionSDR CA960111017Exhaust Duct · cracked(CAN)INSPECTION REVEALED TWO (2) CRACKS RADIATING AXIALLY FROM THE AFT EDGE OF THE EXH DUCT. ONE CRACK 1 7/8" LONG, THE OTHER 3/4" LONG. 6 1/2" SPACE BETWEEN THE CRACKS, WITH THE CRACKS RUNNING PARALLEL.Dec 29, 1995 · Cessna 550 · Engine Collector/Tailpipe/Nozzle
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