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 98ZZZX458Actuator · failedAIRCRAFT REPORTED NO DOWNLOCK INDICATION ON LT GEAR AFTER REPEATED CYCLES. AIRCRAFT MADE LOW PASS. LT GEAR WAS CONFIRMED TO BE UP AND LOCKED. MANUAL UPLOCK RELEASE DEPLOYED. LT GEAR STILL LOCKED UP. EMERGENCY BLOW-DOWN BOTTLE WAS ACTUATED AND 3 GREEN INDIJan 15, 1998 · N789TT · Cessna 550 · Landing Gear Retraction/Extension SystemSDR 98ZZZX457Blower · seizedPILOT REPORTED SMOKE ON LANDING. FOUND CABIN BLOWER MOTOR TO BE CAUSE. MOTOR WAS SEIZED. (MOTOR INSTALLED IN 1991.) TSOH/TSN: 313.1 HOURS. INSTALLED NEW BLOWER MOTOR.Jan 9, 1998 · N77ND · Cessna 550 · Air Distribution FanSDR AU971544Door · separated(AUS) LH ENGINE OIL ACCESS DOOR MISSING. CREW HAD REPORTED NOISE DURING FLIGHTDec 10, 1997 · Cessna 550 · Fluid Service DoorsSDR 97ZZZX4966Rib · crackedUPON REMOVAL OF THE LEFT LOWER RUDDER CLOSEOUT SKIN, THE INTERSPAR RIB WAS FOUND CRACKED ACROSS THE ENTIRE WIDTH OF THE RIB. THE DAMAGE TO THE RIB WAS A CLEAR INDICATION OF A CRACK CAUSED BY FATIGUE. THE DECREASED INTEGRITY ALSO CAUSED THE ATTACHING RUDDER SNov 17, 1997 · N387HA · Cessna 550 · Rudder, Spar/RibSDR AU971549Sleeve · broken(AUS) LH OLEO WOULD NOT EXTEND AFTER TAKE-OFF PREVENTING LANDING GEAR RETRACTION. LATER THE OLEO EXTENDED ALLOWING GEAR RETRACTION. THE OLEO WAS DISASSEMBLED AND SPACER PNO 5541208-1 WAS FOUND JAMMED INSIDE OF A BROKEN BEARING LOWER SLEEVE PNO 5541309-7.Nov 14, 1997 · Cessna 550 · Main Landing Gear Strut/Axle/TruckSDR 97ZZZX5035Gearbox · seizedAFTER TAKEOFF FOR FLIGHT TO ORLANDO, FLAPS SELECTED UP. HEARD BANG AND FLAP CIRCUIT BREAKER TRIPPED. RESET CIRCUIT BREAKER, FLAPS DID NOT MOVE AND CIRCUIT BREAKER TRIPPED AGAIN. FLIGHT CONTINUED TO DESTINATION AT REDUCED SPEED AND MADE UNEVENTFUL LANDING. Nov 12, 1997 · N45NS · Cessna 550 · Trailing Edge Flap Control SystemSDR 97ZZZX5032Gearbox · shearedWHILE TROUBLEHSHOOTING FLAP DRIVE FAILURE, FOUND LEFT FLAP GEARBOX DRIVESHAFT SHEARED. THIS WAS CAUSED BY RIGHT FLAP GEARBOX SEIZING. REPLACED GEARBOX WITH UPGRADED DASH 38 UNIT iAW CESSNA SB 558-27-16, REV 7.Nov 12, 1997 · N45NS · Cessna 550 · Trailing Edge Flap Control SystemSDR CA971117011Capacitor Assy · burned(CAN) THE LT GENERATOR WAS RESET TWICE TO BRING IT BACK ON LINE AND THE AIRCRAFT DEPARTED. MAINTENANCE PERSONNEL RAN THE ENGINE TO CHECK FOR GENERATOR PROBLEMS, BUT EVERYTHING WAS NORMAL. AFTER REMOVING THE LT LOWER ENGINE COWLING TO DO A VISUAL, IT WAS NOTINov 6, 1997 · Cessna 550 · Starter-GeneratorSDR 98ZZZX3Seat Rail · wornDURING PHASE 5 INSPECTION, FOUND HOLES WORN TO LIMITS AT CO-PILOT'S RIGHT SEAT RAIL HATCH. SPLICED IN NEW SECTION OF SEAT RAIL IAW CESSNA 550 SRM FIGURE 801.Nov 1, 1997 · N84EA · Cessna 550 · Fuselage, Seat/Cargo Attach FittingsSDR 97ZZZX4599Bearing · nut looseNLG WOULD CYCLE IN THE NOSE WHEELWELL. HYDRAULIC PRESSURE 'ON' LIGHT WOULD ILLUMINATE EVERY TIME THE GEAR CYCLED. FOUND THE NOSE STRUT BEARING HAD LOOSENED AND BACKED OFF. THIS ALLOWED THE STRUT TO EXTEND BEYOND LIMITS. WITH THE STRUT EXTENDED BEYOND LIMITOct 15, 1997 · N47SW · Cessna 550 · Nose/Tail Landing Gear Strut/AxleSDR 97ZZZX4456Control Cable · frayedDURING FLAP RIGGING, FOUND FLAP PRE-SELECT CABLE FRAYED. ORDERED P/N 14550-776-39 CABLE ASSY. FOUND BALL SWEDGE LOCATED AT 106.69 INCH. CONFIRM LOCATION OF SWEDGE BALL WITH CESSNA. CABLE REMOVED FROM AIRCRAFT WAS 103.0 INCHES. CESSNA IN PROCESS OF BUILDINOct 9, 1997 · N12549 · Cessna 550 · Trailing Edge Flap Control SystemSDR CA971010007Aileron · cracked(CAN) RIGHT AILERON LEADING EDGE SKIN CRACKED IN TWO PLACES UNDER INBD BALANCE WEIGHT. SCREW HEADS ABOUT 1 INCH LONG EACH. LEADING EDGE REPLACED. PART TC: 2,277 HOURS.Oct 6, 1997 · Cessna 550 · AileronsSDR CA971010006Skin · cracked(CAN) ON DORSAL FIN REPLACEMENT, A 2 INCH CRACK WAS FOUND IN THE RT UPPER TAILCONE SKIN AT STN 456.5 RUNNING FROM THE UPPER EDGE OF THE SKIN CIRCUMFERENTIALLY TOWORDS THE RIGHT. REPAIRED IAW ASSB 851-0047.Oct 6, 1997 · Cessna 550 · Fuselage Main, Plate/SkinSDR CA971010005Flange · cracked(CAN) BOTH ENGINE INLETS CRACKED IN THE RADIUS OF THE COWL ATTACH FLANGE ABOUT 5 INCHES LONG. REPAIRED. PART TC: 2,837.Oct 6, 1997 · Cessna 550 · Engine Anti-Icing SystemSDR CA971010004Doubler · damaged(CAN) DURING MANUFACTURING AND INSTALLATION OF THE DORSAL FIN, A RIVET AT THE REAR PRESSURE BULKHEAD (STN 345.0) WAS DRILLED THROUGH THE SKIN, DOUBLER AND FLANGE ANGLE ADJACENT TO A BULKHEAD ATTACHMENT RIVET. AIRCRAFT TT: 2,277 HOURS.Oct 3, 1997 · Cessna 550 · Vertical StabilizerSDR CA971010003Bulkhead · misinstalled(CAN) ON INSPECTION, FOUND THAT THE FIRST 12 INCHES AFT OF THE REAR PRESSURE BULKHEAD (STN 345.0) TO THE RIGHT OF CENTERLINE AT THE UPPER CENTER STRINGER, RIVETS WERE INSTALLED WITH INSUFFICIENT EDGE DISTANCE. AIRCRAFT TT: 2,277 HOURS.Oct 3, 1997 · Cessna 550 · Fuselage Main, BulkheadSDR CA970930008Splice · mismanufactured(CAN) SPLICE DOUBLER AT THE INSIDE LOWER AFT CORNER OF THE LEFT WINDSCREEN FOUND WITH .083 INCH EDGE DISTANCE ON TWO RIVETS, THIS IS LESS THAN THE MINIMUM EDGE DISTANCE. ON FORWARDD RIVET ABOUT .020 INCH HAS BEEN FILED AWAY. SB 550-53-26 REFERS. AIRCRAFT T:Sep 26, 1997 · Cessna 550 · Fuselage Miscellaneous StructureSDR CALA9800726Gusset · mismanufactured(CAN) GUSSET FOUND WITH LESS THAN MIN EDGE DISTANCE AND TOP 3 RIVETS HAD BEEN GROUND AWAY. REPLACED RIVETS AND GUSSET. REFER TO SB550-53-26.Sep 25, 1997 · Cessna 550 · Fuselage Miscellaneous StructureSDR CA980930009Gusset · mismanufactured(CAN) GUSSET FOUND WITH LESS THAN MIN EDGE DISTANCE AND TOP 3 RIVETS HAD BEEN GROUND AWAY. REPLACED RIVETS AND GUSSET. REFER TO SB550-53-26.Sep 25, 1997 · Cessna 550 · Fuselage Miscellaneous StructureSDR 97ZZZX4367Hinge Pin · nickedCREW REPORTED MAIN ENTRANCE DOOR HINGE WAS LOOSE. ON INSPECTION, FOUND THE UPPER HINGE PIN RETAINING RING HAD COME OFF AND THE HINGE PIN HAD DROPPED DOWN AND OUT OF THE HINGE ALLOWING EXCESSIVE PLAY IN THE UPPER HINGE. SUBMITTER STATED THIS AREA AND ASSEMBLYSep 23, 1997 · N116K · Cessna 550 · Passenger/Crew DoorsSDR 97ZZZX4345Grommet Assy · brokenRIGHT IGNITER WAS EXTREMELY DIFFICULT TO REMOVE. WHEN REMOVED PARTS WERE HEARD TO FALL INSIDE COMBUSTION CHAMBER. BORESCOPE INSPECTION REVEALED PORTIONS OF BOTH LEFT AND RIGHT GROMMET ASSEMBLIES LYING IN COMBUSTION CHAMBER. ENGINE HAS BEEN DISASSEMBLED TO HSep 19, 1997 · N84EA · Cessna 550 · Turbine Engine Combustion SectionSDR 97ZZZX4614Fan · failedDURING DESCENT, CABIN AND DEFOG FANS WERE SELECTED TO 'HIGH'. A BURNT SMELL AND SMOKE CAME FROM DEFOG OUTLETS. FANS WERE TURNED OFF AND AIRCRAFT DIVERTED TO CLOSER APT. SMOKE DISSIPATED AFTER TURNING OFF FANS. INVESTIGATION FOUND THE DEFOG FAN WAS INOPERABSep 16, 1997 · N97S · Cessna 550 · Windshield/Door Rain/Ice RemovalSDR 97ZZZX4288Switch · failedDURING POST-FLIGHT CHECK, THE MACH AIRSPEED WARNING SYSTEM WOULD NOT TEST PROPERLY. TROUBLESHOOTING REVEALED A BAD MACH AIRSPEED WARNING SWITCH. REPLACED SWITCH AND SYSTEM TESTED AND OPERATED CORRECTLY. SUBMITTER STATED THIS SWITCH HAS POOR RELIABILITY. THSep 10, 1997 · N846HS · Cessna 550 · High Speed WarningSDR 97ZZZX4290Control Cable · mismanufacturedDURING SCHEDULED CABLE INSPECTION, THE AILERON CABALE WHICH RUNS THROUGH THE FUSELAGE WAS FOUND TO HAVE BROKEN STRANDS. UPON RECEIPT OF THE NEW CABLE, FOUND THE TERMINAL END WAS INCORRECT (CLEVIS TYPE INSTEAD OF 'EYE' TYPE). THE MANUFACTURER WAS CONTACTED ANSep 4, 1997 · N4614N · Cessna 550 · Aileron Control SystemSDR 97ZZZX4297Gearbox · shaft shearedDRIVE GEAR SHEARED AT NARROW PORTION OF GEAR. THIS IS UPDATED MODEL THAT IS SUPPOSED TO PREVENT SHEARING SHAFT IN THIS LOCATION.Sep 1, 1997 · N800LA · Cessna 550 · Trailing Edge Flap ActuatorSDR 97ZZZX4012Shimmy Damper · brokenNOSE WHEEL BEGAN TO SHIMMY ON LANDING ROLL-OUT AT APPROXIMATELY 50 KNOTS. NO ABNORMAL CREW ACTION REQUIRED. SHIMMY DAMPER WAS REMOVED AND FOUND TO HAVE FAILED INTERNALLY. ROLL PIN SECURING SHAFT TO PISTON SHEARED. THIS PREVENTED ANY DAMPENING ACTION. NOSEAug 27, 1997 · N232DM · Cessna 550 · Shimmy DamperSDR 97ZZZX3819Switch · failedMECHANIC NOTICED POWER BRAKE PUMP STOPPED CYCLING AFTER FLIGHT, IT NORMALLY CYCLES EVERY MINUTE OR SO TO RECHARGE PRESSURE ACCUMULATOR. LACK OF CYCLING TRACED TO OPEN PRESSURE SWITCH WHICH WAS REPLACED AND OPS RETURNED TO NORMAL. SUBMITTER HAS HAD TO CHANGE Aug 15, 1997 · N26496 · Cessna 550 · Landing Gear Brake SystemSDR CA970820016Arm Assembly · bent(CAN) DURING A PHASE 5 INSPECTION, THE ARM WAS FOUND DRIVEN HARD AGAINST THE CABIN VENTILATION JUNCTION BOX AND THE MICROSWITCH STRIKER ARM WAS BENT AND FOLDED AGAINST THE JUNCTION BOX. THE MOTOR DRIVING THE ARM AND VALVE ASSEMBLY HAD FAILED DUE TO OVERHEATINGAug 14, 1997 · Cessna 550 · Air Distribution SystemSDR CA970820015Skin · cracked(CAN) WHILE REPLACING DORSAL FIN PER SB 550-53-24, A 2" CRACK WAS FOUND IN THE R/H SKIN ABOUT HALF WAY BETWEEN THE FRESH AIR DUCT FLANGE AND THE FRAME AT FS456.50 TRAVELLING CIRCUMFERENTIALLY FROM THE TOP EDGE TOWARDS THE R/H SIDE. AREA IS BEING REPAIRED BY INAug 13, 1997 · Cessna 550 · Fuselage Main, Plate/SkinSDR CA970902003Channel · cracked(CAN) CHANNELS IN LEFT HAND WHEEL WELLS FOUND CRACKED DURING A PHASE INSPECTION.Aug 12, 1997 · Cessna 550 · Fuselage Miscellaneous StructureSDR CA970815016V-Nav Controller · faulty(CAN) V-NAV SELECTOR SWITCH MOVED INADVERTENTLY BETWEEN POSITIONS DUE TO WORN SWITCH. THIS DISABLED THE ALTITUDE ALERTER AND AIRCRAFT DESCENDED BELOW ASSIGNED ALTITUDE. SWITCH HAS BEEN SAFETIED IN ALERTER POSITION UNTIL PARTS ARE AVAILABLE. PLACARD INSTALLED IAug 1, 1997 · Cessna 550 · Flight Management Computing Hardware SystemSDR CA970722021Flex Drive Shaft · corroded(CAN) DURING TROUBLESHOOTING OF THE ENGINE SYNCHRONIZATION SYSTEM THE ACTUATOR FLEX DRIVE SHAFT WAS FOUND BROKEN INTO TWO PIECES AT APPROXIMATELY MID SPAN. THE CABLE WAS CORRODED WITH WATER PRESENT.Jul 15, 1997 · Cessna 550 · Engine SynchronizingSDR 97ZZZX3717Pressure Switch · failedDURING A DAILY INSPECTION, A/C POWER WAS TURNED ON. THE ANTI-SKID BRAKE PUMP BEGAN TO RUN, BUT WOULD NOT SHUT OFF ONCE SYSTEM PRESSURE WAS MADE. TROUBLESHOOTING REVEALED A BAD IN-LINE PRESSURE SWITCH. SWITCH WAS INSTALLED 459.4 HOURS AGO. TAKING INTO CONSIJul 1, 1997 · N26496 · Cessna 550 · Brake Anti-Skid SectionSDR 97ZZZX3087Switch · stuckON TAKEOFF, 'HYD PRESS ON'. LIGHT STAYED ON AFTER LANDING GEAR RETRACTION. PILOT RAN CHECKLIST ITEMS AND DIVERTED TO FJJ. TROUBLESHOOTING REVEALED SWITCH S89 STUCK. SWITCH WAS REPLACED AND FUNCTIONAL TEST COMPLETED SATISFACTORILY.Jun 6, 1997 · N84EA · Cessna 550 · Hydraulic Indicating SystemSDR CA970602005Sense Line · loose(CAN) AFTER ENGINE CHANGE DURING TEST FLIGHT ON LEVEL OFF AT 14,000 FEET WITH ENGINE POWER REDUCTION #2 ENGINE SPOOLED DOWN TO IDLE. MULTIPLE ATTEMPTS, THROUGH POWER LEVER MOVEMENTS, TO REGAIN POWER DURING DESCENT AND LANDING WERE UNSUCCESSFUL. AFTER TEST FLIGMay 28, 1997 · Cessna 550 · Fuel Control/Reciprocating EnginesSDR 97ZZZX2863Blower · failedINSTALLED A CESSNA CITATION FACTORY SUPPLIED 'NEWLY OVERHAULED' EXCHANGE OVERHEAD BLOWER ASSEMBLY PN 9912323-2, MANUFACTURER'S PN BC61A901-2EX ON 5-7-96. NORMAL USE IS FOR THIS BLOWER TO BE TURNED 'ON' TO SUPPLY AIR TO THE OVERHEAD WEMAC VENT SYSTEM. APPARENMay 28, 1997 · N10EG · Cessna 550 · Air Distribution FanSDR CA970523006Exhaust Duct · cracked(CAN) DURING INSPECTION A CRACK WAS FOUND IN THE EXHAUST DUCT. THE ONE INCH CRACK WAS RADIATING AXIALLY FORWARD FROM THE AFT EDGE OF THE DUCT. THE DEFECTIVE PART WAS REPLACED BY PRATT & WHITNEY SERVICE CENTRE.May 14, 1997 · Cessna 550 · Engine Collector/Tailpipe/NozzleSDR 97ZZZX2088Switch · failedTHIS SWITCH IS THE CONTROL FOR THE POWER BRAKE PUMP. IT FAILS IN THE ELECTRICALLY 'OPEN' POSITION AND THE PUMP FAILS TO RUN CREATING A NO BRAKES CONDITION. SUBMITTER STATED IN LOOKING AT PAST RECORDS FOR THE LAST 5 YEARS, HAVE CHANGED THIS P/N SWITCH 5 TIMESApr 22, 1997 · N2737K · Cessna 550 · Landing Gear Brake SystemSDR 97ZZZX2000Motor Assy · intermittentREMOVED AND REPLACED ANTI-SKID HYDRAULIC POWER PACK ASSY. AFTER 29.8 HRS OF USAGE, THE MOTOR BECAME INTERMITTENT. SUSPECT A LOOSE CONNECTION WITHIN THE MOTOR ASSY. THIS WAS A REPAIRED ANTI-SKID HYDRAULIC POWER PACK PROVIDED BY THE MANUFACTURER. REMOVED ANDApr 22, 1997 · N2663Y · Cessna 550 · Brake Anti-Skid SectionSDR 97ZZZX1999Motor Assy · malfunctionAFTER REPLACING THE ANTI-SKID BRAKE MOTOR ASSY WITH THE GREEN AND BLACK WIRES CONNECTED PROPERLY, THE MOTOR ASSY RUNS IN A COUNTER CLOCKWISE DIRECTION, OPPOSITE OF THE NORM. REMOVED AND REPLACED ANTI-SKID MOTOR ASSY. SUBMITTER SUSPECTS IMPROPER WIRING WITHINApr 22, 1997 · N2663Y · Cessna 550 · Brake Anti-Skid SectionSDR 97ZZZX2686Tcas Unit · malfunctionPILOT DEVIATED FROM ASSIGNED ALTITUDE OF FL 330 AFTER HE APPARENTLY RECEIVED A SECOND RA VERBAL ALERT TO DESCEND WHILE APPROACHING ANOTHER AIRCRAFT AT ASSIGNED ALTITUDE OF FL 310. PILOT SAID HE HAD TCAS II UNIT CHECKED AT A REPAIR STATION AND UNIT CHECKED GOOApr 12, 1997 · N960CP · Cessna 550 · Air Collision Avoidance SystemSDR CA970304005Engine · making metal(CAN) DURING CLIMB AFTER TAKEOFF A LOUD BANG WAS HEARD FOLLOWED BY A FLAME OUT. THE ENGINE WAS SHUTDOWN AS PER PROCEDURES AND THE AIRCRAFT RETURNED TO BASE. POST FLIGHT INSPECTION FOUND FERROUS METAL LAYING IN THE TAILCONE. BOROSCOPE OF THE H.P. TURBINE REVEALMar 1, 1997 · Cessna 550 · Engine (Turbine/Turboprop)SDR CWQA061DStator Vane · fracturedONE OF THE REAR INNER COMPRESSOR STATOR VANES HAD BECOME LIBERATED AND HAD BEEN INGESTED THROUGH THE CORE OF ENGINE. ENGINE REMOVED. LAB ANALYSIS OF STATOR REVEALED THE BRAZE MATERIAL USED TO RETAIN THE VANES HAD BEEN CHEMICALLY REMOVED LEAVING VANE RETENTIOFeb 25, 1997 · N6862Q · Cessna 550 · Turbine Engine Compressor SectionSDR 98ZZZX857Housing Assy · failedDURING ROUTINE PHASE 'B' INSPECTION, THE 7 O'CLOCK IGNITER WAS REMOVED AND THE COMBUSTION CHAMBER LINER GROMMET (HOUSING ASSY?) FELL FROM POSITION INTO THE SPACE SURROUNDING THE COMBUSTION CHAMBER. SUSPECT THE HOUSING WEBS BROKE FREE FROM THE COMBUSTION LINERFeb 17, 1997 · N232DM · Cessna 550 · Turbine Engine Combustion SectionSDR CA970211004Fuel Control · faulty(CAN) DURING CRUISE FLIGHT THE #1 ENGINE ROLLED BACK FROM CRUISE POWER TO APPROXIMATELY 80 PERCENT N2 AT FL390. AFTER LANDING THE "O" RINGS IN THE P3 PLUMBING WAS REPLACED AND THE ENGINE GROUND RUN SERVICEABLE. FOLLOWING DAY THE SAME PROBLEM RECURRED AND THE FFeb 4, 1997 · Cessna 550 · Fuel Control/Reciprocating EnginesSDR 97ZZZX1622Windsheild · defectiveOWNER REQUESTED INSTALLATION OF A SET OF WINDSHEILDS DELIVERED BY THE CUSTOMER. INQUIRIES WERE MADE FROM THE SUPPLIER AS TO THE TRACEABILITY OF THE WINDSHIELDS. NO TRACABILITY COULD BE PROVIDED AND NEW WINDSHIELDS WERE ORDERED FROM CESSNA AND INSTALLED. THIJan 31, 1997 · N801JP · Cessna 550 · Flight Compartment WindowsSDR 97ZZZX1621Windsheild · defectiveOWNER REQUESTED INSTALLATION OF A SET OF WINDSHEILDS DELIVERED BY THE CUSTOMER. INQUIRIES WERE MADE FROM THE SUPPLIER AS TO THE TRACEABILITY OF THE WINDSHIELDS. NO TRACABILITY COULD BE PROVIDED AND NEW WINDSHIELDS WERE ORDERED FROM CESSNA AND INSTALLED. THIJan 31, 1997 · N801JP · Cessna 550 · Flight Compartment WindowsSDR 97ZZZX1652Nozzles · defectiveWHILE PERFORMING AN INCOMING MAINTENANCE INSPECTION, NR 1 ENG FLAMED OUT WHEN THE POWER LEVER WAS BEING RETARDED. PERFORMED A FUEL MANIFOLD PRESSURE CHECK, FOUND TO BE ON THE HIGH SIDE, STILL WITHIN LIMITS. REMOVED ASSY SENT TO PRATT AND WHITNEY. FOUND 7 NOJan 29, 1997 · N337RE · Cessna 550 · Fuel Injector NozzleSDR CA970109017De-Icer Boot · delaminated(CAN) PILOT REPORTED RT DE-ICER BOOT WOULD NOT INFLATE WHEN REQUIRED TO REMOVE ICE BUILD-UP ON LEADING EDGE DURING FLIGHT. MAINTENANCE FOUND BOOT INTERNALLY DELAMINATED BETWEEN CELLS AT W.S. 91.0. THIS AREA IS WHERE THE WING FLEXES (SKINS JOINED AT THIS SPOTJan 5, 1997 · Cessna 550 · Airfoil Anti/De-ice SystemSDR AU970135Valve · seized(AUS) HYDRAULIC OPEN CENTRE BYPASS VALVE INTERNAL FAULT - VALVE INTERMITTENTLY SEIZED IN THE OPEN POSITIONJan 3, 1997 · Cessna 550 · Hydraulic System, Main
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