# Service difficulty reports: Continental 0-470-11 A list on [Continental 0-470-11](https://openairdocs.org/engine/continental-0-470-11.md). Newest first. General aviation reporting is voluntary. - [SDR CA160316002](https://openairdocs.org/sdr/CA160316002.md): Bracket · cracked · Mar 15, 2016 · Cessna 305C · Trailing Edge Flaps > (CAN) DURING ANNUAL INSPECTION, A CRACK WAS DISCOVERED IN THE RT OUTBOARD FLAP BRACKET. IT ORIGINATED FROM THE RELEIF NOTCH AT THE LOWER(R/H) AFT ATTACHMENT TAB, WHERE IT IS RIVETED TO THE FLANGE OF THE REAR WING SPAR. THE CRACK IS APPROX 3/4" LONG. - [SDR CA150806002](https://openairdocs.org/sdr/CA150806002.md): Magneto · intermittent · Aug 2, 2015 · Cessna 305A · Magneto/Distributor > (CAN) PILOT REPORTED EXCESSIVE LT MAG DROP DURING RUN-UP PROCEDURE, 200RPM. CONFIRMED MAG DROP. INVESTIGATION REVEALED LT MAG ONLY OPERATING INTERMITTENTLY. REMOVED MAG FOR RETURN TO O/H FACILITY FOR INSPECTION AND INSTALLED SERVICABLE O/H MAG. LT MAG TIME - [SDR CA150514004](https://openairdocs.org/sdr/CA150514004.md): Plate · cracked · Mar 10, 2015 · Cessna 305C · Fuselage Main, Bulkhead > (CAN) DURING A SPECIAL INSPECTION OF THE AFFECTED AREA, SEVERAL CRACKS WAS DISCOVERED ON THE FWD LT LANDING GEAR REINFORCEMENT PLATE, PN-0613105-2. THE CRACKS RADIATED TANGENTIALLY FROM THE LOWER OTBD 5/16 HOLE AT THE 5:00 & 7:00 POSITION FOR ABOUT 1/2", TERM - [SDR CA060207005](https://openairdocs.org/sdr/CA060207005.md): Axle · cracked · Feb 7, 2006 · Cessna 305A · Nose/Tail Landing Gear Strut/Axle > (CAN) DURING A STRUCTURAL INSPECTION, A CRACK WAS FOUND IN RADIUS OF PART WHERE THE CYLINDER PORTION MEET THE BLOCK WHERE THE BOLTS ARE. BOTH AXLES (QTY 2) WERE CRACKED. ONE WAS VERY EASY TO SEE. THE OTHER APPEARED UNDER LIQUID PENETRANT. PARTS HAVE BEEN REPLA - [SDR CA050729003](https://openairdocs.org/sdr/CA050729003.md): Pump · failed · Jul 22, 2005 · Cessna 305A · Engine Fuel Pump > DURING INSPECTION RUN-UP, THE FUEL PRESSURE DROPPED TO 3 PSI AT IDLE (NORMAL PRESSURE IS 12 PSI). THE ENGINE HAD DIFFICULTY RUNNING. THE PART WAS REMOVED AND RETURNED TO THE OVERHAUL FACILITY FOR WARRANTY WORK. - [SDR CA050609010](https://openairdocs.org/sdr/CA050609010.md): Piston · broken · May 23, 2005 · Cessna 305A · Reciprocating Engine Power Section > (CAN) DURING FLIGHT, MOMENTARY DROP IN OIL PRESSURE WAS NOTED. DURING NEXT OIL CHANGE, SIGNIFICANT AMOUNTS OF METAL AND CARBON WERE NOTED IN OIL SCREEN. DUE TO HIGH LEVELS OF CARBON, IT WAS SUSPECTED THAT AN EXHAUST VALVE HAS FAILED. NR 1 CYLINDER WAS SUSPE - [SDR CA031107005](https://openairdocs.org/sdr/CA031107005.md): Guide · loose · Sep 11, 2003 · Cessna 305A · Reciprocating Engine Cylinder Section > (CAN) OTHER CYLINDERS INSTALLED ON THIS ENGINE DID NOT HAVE THE INTAKE GUIDE SEALS INSTALLED. (SHORTER GUIDES REQUIRES SEALS, WHILE LONGER GUIDES DO NOT REQUIRE SEALS.) THE INTAKE SPRINGS WERE REMOVED TO MEASURE THE GUIDE TO SEE IF THE SEALS WERE REQUIRED FO - [SDR CA031107006](https://openairdocs.org/sdr/CA031107006.md): Guide · loose · Sep 11, 2003 · Cessna 305A · Reciprocating Engine Cylinder Section > (CAN) DURING INSPECTION, IT WAS NOTED THAT THE INTAKE GUIDES WERE LEAKING OIL.THE SPRINGS WERE REMOVED TO MEASURE THE GUIDE HEIGHTS.THERE ARE NOW SHORTER GUIDES THAT REQUIRE THE INSTALLATION OF A SEAL. SOME OF THESE SEALS WERE NOT INSTALLED ON A BATCH OF CYLI - [SDR CA031107008](https://openairdocs.org/sdr/CA031107008.md): Guide · loose · Sep 11, 2003 · Cessna 305A · Reciprocating Engine Cylinder Section > (CAN) DURING INSPECTION, IT WAS NOTED THAT THE INTAKE GUIDES WERE LEAKING OIL. THE SPRINGS WERE REMOVED TO MEASURE THE GUIDE HEIGHTS. THERE ARE NOW SHORTER GUIDES THAT REQUIRE THE INSTALLATION OF A SEAL. SOME OF THESE SEALS WERE NOT INSTALLED ON A BATCH OF CYL - [SDR CA020731017](https://openairdocs.org/sdr/CA020731017.md): Tube · split · Jul 31, 2002 · Cessna 305 · Nose/Tail Landing Gear > (CAN) DURING SERVICING OF TAILWHEEL, A NEW TUBE WAS BEING INSTALLED. THE TUBE WAS INFLATED TO CHECK FOR LEAKS (STANDARD PROCEDURE) AND IT WAS NOTICED THAT THE SIDE OF THE TUBE STARTED TO SPLIT. 8 TUBES WERE PURCHASED AT THE SAME TIME. ALL OF THEM HAVE THE - [SDR CA010821005](https://openairdocs.org/sdr/CA010821005.md): Alternator · failed · Aug 11, 2001 · Cessna 305A · DC Generator-Alternator > (CAN) ALTERNATOR WENT OFF LINE. UPON REMOVAL OF THE ALTERNATOR WAS NOTICED THAT THE SPLINE GEAR WAS SHEARED. THE DRIVE SHAFT WAS ALSO SHEARED IN THE THREADED PORTION, JUST BELOW THE CASTLE NUT. THE CASTLE NUT WAS STILL INTACT ON THE TIP OF THE THREADED SHAFT W - [SDR CA010627044](https://openairdocs.org/sdr/CA010627044.md): Alternator · failed · Jun 22, 2001 · Cessna 305A · DC Generator-Alternator > (CAN) ALTERNATOR REMOVED FROM AIRCRAFT AFTER PILOT REPORTED NO INDICATION OF CHARGE AFTER HIS LAT LANDING. AFTER MAKING A FEW TESTS, IT WAS DETERMINED THAT THE ALTERNATOR WAS FAULTY. THIS OVERHAULED ALTERNATOR WS INSTALLED ON THE AIRCRAFT AS A REPLACEMENT FOR - [SDR CA010703035](https://openairdocs.org/sdr/CA010703035.md): Retainer · broken · Jun 15, 2001 · Cessna 305C · DC Generator-Alternator > (CAN) ALTERNATOR REMOVED FROM A/C ENGINE FOR INVEST. & TO SEE IF RETAINER CUP WS DAMAGED. SMALL PIECES OF METAL & RUBBER FELL OFF ACCESSORIES CASE UPON REMOVAL OF ALTNR. LOOKING AT ALTERNATOR SPLINE GEAR & DRIVE SHAFT, EVIDENCE OF DAMAGES WERE FOUND. RETAINING - [SDR CA010703037](https://openairdocs.org/sdr/CA010703037.md): Retainer · cracked · Jun 15, 2001 · Cessna 305A · DC Generator-Alternator > (CAN) ALTERNATOR REMOVED FROM A/C ENGINE FOR INVESTIGATION AND TO SEE IF RETAINER CUP WAS DAMAGED. LOOKING AT THE ALTERNATOR SPLINE GEAR AND DRIVE SHAFT, EVIDENCE OF DAMAGES WERE FOUND. THE RETAINING CUP WAS CRACKED WHERE THE RUBBER BUSHINGS ARE SEATED. THE RE - [SDR CA010621003](https://openairdocs.org/sdr/CA010621003.md): Alternator · failed · May 24, 2001 · Cessna 305A · AC Generator-Alternator > (CAN) ALTERNATOR WS REMOVE TO CHECK FOR INSTALLATION OF NUT AND SPLINE DRIVE. COTTER PINE WAS BROKEN AND NUT WAS BACKED OFF ON SPLINE. BOTH THE NUT AND COTTER PIN WS FOUND INSIDE THE ENGINE SPLINE GEAR. ALTERNATOR WAS SENT TO MANUFACTURER FOR OBSERVATIONS. - [SDR CA010621004](https://openairdocs.org/sdr/CA010621004.md): Alternator · failed · May 18, 2001 · Cessna 305A · AC Generator-Alternator > (CAN) ALTERNATOR WENT OFF LINE AND WOULD NO LONGER SUPPLY POWER. THE ALTERNATOR WAS REMOVED FOR REPLACEMENT. THE ALTERNATOR WAS RETURNED TO THE MANUFACTURER FOR WARRANTY CONDSIDERATION. THE MANUFACTURER 9SKYTRONICS) CONTACTED ME AND INFORMED ME THAT THE ROTORS - [SDR CA010621006](https://openairdocs.org/sdr/CA010621006.md): Alternator · failed · Apr 25, 2001 · Cessna 305A · AC Generator-Alternator > (CAN) ALTERNATOR WENT OFF LINE AND WOULD NO LONGER SUPPLY POWER. THE ALTERNATOR WAS REMOVED FOR REPLACEMENT. IT WAS NOTED THAT THE ALTERATOR DID HAVE A NUT INSTALLED ON THE SPLINE DRIVE. THE SPLINE DRIVE WAS NOTED TO BE SHEARED. THE ALTERNATOR WAS RETURNED TO - [SDR CA010621005](https://openairdocs.org/sdr/CA010621005.md): Alternator · failed · Apr 20, 2001 · Cessna 305A · AC Generator-Alternator > (CAN) ALTERNATOR WAS REMOVED TO CHECK FOR INSTALLATION OF NUT ON SPLINE DRIVE. COTTOR PIN WAS BROKEN AND NUT WAS BACKED OFF THE SPLINE. BOTH THE NUT AND COTTER PIN WAS FOUND INSIDE THE ENGINE SPLINE GEAR. ALTERNATOR WAS SENT TO MANUFACTURER FOR OBSERVATIONS. - [SDR CA010621007](https://openairdocs.org/sdr/CA010621007.md): Alternator · failed · Apr 19, 2001 · Cessna 305A · AC Generator-Alternator > (CAN) ALTERNATOR WENT OFF LINE AND WOULD NO LONGER SUPPLY POWER. THE ALTERNATOR WS REMOVED FOR REPLACEMENT. IT WAS NOTED THAT THE ALTERNATOR DID NOT HAVE A NUT INSTALLED ON SPLINE DRIVE. THE SPLINE DRIVE WAS NOTED TO BE SHEARED. THE ALTERNATOR WAS RETURNED TO - [SDR CA010214027](https://openairdocs.org/sdr/CA010214027.md): Hinge · cracked · Jan 25, 2001 · Cessna 305A · Trailing Edge Flaps > (CAN) WING FLAP HINGE INBOARD FOUND CRACKED AT BOTH LOWER FLANGES THAT ATTACH TO THE SPAR. PART REPLACED WITH NEW. - [SDR CA980930004](https://openairdocs.org/sdr/CA980930004.md): Control Cable · chafed · Sep 21, 1998 · Cessna 305A · Aileron Control System > (CAN) AILERON CABLE FOUND WITH BROKEN STRANDS. ON REMOVAL, NUMEROUS STRANDS WERE FOUND WORN AND BROKEN. - [SDR CA980325003](https://openairdocs.org/sdr/CA980325003.md): Spring · broken · Mar 9, 1998 · Cessna 305A · Engine Oil Pressure > (CAN) SPRING WAS BEING REMOVED FOR INSTALLATION ON ANOTHER AIRCRAFT. NO INDICATION THAT THE SPRING WAS BROKEN. REPLACED. - [SDR 98ZZZX362](https://openairdocs.org/sdr/98ZZZX362.md): Crankshaft · cracked · Dec 11, 1997 · Reciprocating Engine Power Section > CRANKSHAFT'S FIRST FILLET AREA CLOSEST TO FLANGE HAD A 50 PERCENT FSH INDICATION. - [SDR 98ZZZX4](https://openairdocs.org/sdr/98ZZZX4.md): Crankshaft · defective · Dec 11, 1997 · Reciprocating Engine Power Section > CRANKSHAFT'S FIRST FILLET AREA CLOSEST TO FLANGE HAD A 59 PERCENT FSH INDICATION. ## The whole list in SQL Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS: ```sql 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 engine_model_key = 'O47011' ORDER BY difficulty_date DESC ``` This list as a web page: https://openairdocs.org/engine/continental-0-470-11/reports --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.