# Service difficulty reports: Lycoming O-360-A4K

A list on [Lycoming O-360-A4K](https://openairdocs.org/engine/lycoming-o-360-a4k.md).

Newest first. General aviation reporting is voluntary.

Page 1 of 2 · 58 reports

- [SDR 2023FA0000844](https://openairdocs.org/sdr/2023FA0000844.md): Seal · failed · Dec 1, 2023 · N1420 · Amrgen AG5B · Reciprocating Engine Power Section
  > UPON,NSPECLION OL THE ENGINE TO DOTERMINE THE SOURCE OF A SIGNIFICANT OIL LEAK, IT WAS DETERMMED TO BE FROM LHE CRANKSHAFT SEAL. THE DEFECTIVE SEAL WAS REMOVED. AND THE AREA WAS CLEANED AND PEEPARED. AND A NEW SEAL WAS INSTALLED IAW SERVICE INSTRUCTION 13792
- [SDR 2023FA0000096](https://openairdocs.org/sdr/2023FA0000096.md): Magneto · destroyed · Feb 13, 2023 · N6632L · Beech C23 · Magneto/Distributor
  > BOTH MAGNETOS WERE REMOVED AS PART OF THE ANNUAL INSPECTION AND SENT TO NORVIC AERO ENGINES LTD (FAA APPROVAL 33NY343C) FOR THEIR 500 HOUR INSPECTION. THE MAGNETOS WERE RETURNED WITH 8130 PAPERWORK, RE-INSTALLED AND FOLLOWING COMPLETION OF THE ANNUAL INSPECTIO
- [SDR 2021FA0000016](https://openairdocs.org/sdr/2021FA0000016.md): Cover · dented · Jan 22, 2021 · N599J · Amrgen AA5B · Reciprocating Engine Cylinder Section
  > ENGINE WAS HAVING INTERMITTENT RPM LOSS & POWER LOSS WITH NO EXPLANATION AS TO WHY. ON THE GROUND DURING MAGNETO CHECK IT WOULD SOMETIMES BE NORMAL AND SOMETIMES LOSE RPM AND POWER ENOUGH TO ABORT A FLIGHT. OWNER ORDERED NEW MAGNETOS, HARNESS AND SPARK PLUGS
- [SDR 2019FA0000322](https://openairdocs.org/sdr/2019FA0000322.md): Cylinder · broken · Sep 22, 2019 · N28991 · Amrgen AA5B · Reciprocating Engine Cylinder Section
  > FRONT PILOT SIDE CYLINDER (#2?) BROKE APART IN FLIGHT. I'M NOT SURE WHICH CYLINDER SERIAL NUMBER BROKE, BUT IT IS ONE OF: 28520-16, 28279-14, 28387-30, 28415-23.
- [SDR CA190522007](https://openairdocs.org/sdr/CA190522007.md): Slip Ring · out of position · May 17, 2019 · Beech C23 · Alternator-Generator Drive
  > (CAN) SLIPRING FOUND INCORRECTLY POSITIONED ON ROTOR SHAFT AND BRUSH BLOCK ASSY FOUND IN CONTACT WITH THE SLIPRING WIRES. (TC# 20190522007)
- [SDR CA180808017](https://openairdocs.org/sdr/CA180808017.md): Magneto · separated · Aug 8, 2018 · Beech C23 · Magneto/Distributor
  > (CAN) DURING A FLIGHT AIRCRAFT LOST THE USE OF A MAGNETO. AFTER OPENING THE ENGINE COVER, THE TECHNICIAN NOTICED THAT THE FLANGE OF THE MAGNETO WAS HANGING. A LARGE QUANTITY OF METAL FILINGS HAS BEEN FOUND IN THE OIL FILTER. (TC# 20180808017)
- [SDR 2017FA0000454](https://openairdocs.org/sdr/2017FA0000454.md): Indicator · failed · Jul 2, 2017 · N1193V · Amrgen AG5B · Attitude Gyro and Indicating System
  > INSTALLED G5 ATTITUDE INDICATOR AS REPLACEMENT FOR VACUUM ATTITUDE INDICATOR. REMOVED VACUUM SYSTEM. UNIT FAILED 8 HOURS AFTER INSTALLATION. MANUFACTURER REPAIRED THE UNIT, SO FAR WORKING PROPERLY.
- [SDR 2017FA0000001](https://openairdocs.org/sdr/2017FA0000001.md): Connecting Rod · broken · Dec 21, 2016 · N505 · Amrgen AA5B · Reciprocating Engine Cylinder Section
  > THE ENGINE WAS ORIGINAL 1979. IT SUFFERED A PROPELLER STRIKE/SUDDEN STOPPAGE EVENT IN JANUARY 1996. THE CRANKSHAFT WAS BENT BEYOND LIMITS. THE CRANKSHAFT AND CASE WERE REPLACED WITH SERVICEABLE PARTS GROUND.006 OVER. ON 12/21/16, THE ENGINE FAILED IN FLIGHT
- [SDR BQVR201603290001](https://openairdocs.org/sdr/BQVR201603290001.md): Engine · making metal · Mar 22, 2016 · N274CT · Beech C23 · Engine (Reciprocating)
  > WHILE ACCOMPLISHING AN ANNUAL INSPECTION OF THE ACFT, NOTED FERROUS METAL INSIDE OIL FILTER CAN, AND DRAINED OIL. ENGINE IS NOT APPROVED FOR RETURN TO SERVICE. CUSTOMER WAS ADVISED OF FINDINGS. THIS ENGINE HAS 805.6 HRS SINCE O/H.
- [SDR JJ8S2014FA0000693](https://openairdocs.org/sdr/JJ8S2014FA0000693.md): Valve · cracked · Dec 2, 2014 · N9298S · Beech C23 · Fuel Control/Reciprocating Engines
  > DURING TAKEOFF, PILOT NOTICED THE ENGINE HAD LOST POWER. PERFORMED AN EMERGENCY LANDING ON INTERSTATE. SUSPECT CARBURETOR HEAT BOX VALVE FAILURE. DURING VISUAL INSPECTION IT WAS DETERMINED THAT THE VALVE HAD FAILED AGAIN. THIS VALVE, HAD BEEN REPLACED 50 HR
- [SDR 2014FA0000551](https://openairdocs.org/sdr/2014FA0000551.md): Butterfly Valve · cracked · Sep 24, 2014 · N9298S · Beech C23 · Fuel Control/Reciprocating Engines
  > WHILE PERFORMING TOUCH AND GO, PILOT NOTICED THAT ENGINE LOST POWER. SAFELY LANDED ACFT AND INSPECTED ENGINE COMPARTMENT. VISUAL INSPECTION SHOWED THAT THE CARBURETOR HEAT BOX VALVE HAD SEPARATED AND JAMMED INSIDE INTAKE. REMOVED CARBURETOR HEAT BOX AND RE
- [SDR 2011FA0000671](https://openairdocs.org/sdr/2011FA0000671.md): Alternator · loose · Aug 7, 2011 · N4521A · Amrgen AA5B · DC Generator-Alternator
  > ALTERNATOR CASE BOLTS WORKED LOOSE, SAFETY WIRE BROKEN. CATASTROPHIC FAILURE AT 152 HRS SINCE O/H. THE ORIGINAL MFG HISTORICALLY LAST MUCH LONGER. ADVISE SELF LOCKING BOLTS AND LOCK TABS AS THE ORIGINAL, AND EXTREME CLEANING OF MATING SURFACES PRIOR TO ASSY
- [SDR CA101117001](https://openairdocs.org/sdr/CA101117001.md): Valve Spring · broken · Nov 16, 2010 · Beech C23 · Reciprocating Engine Cylinder Section
  > (CAN) LORS D`UN INSPECTION DE 100 HRS, LE TECHNICIEN D`ENTRETIEN A DECOUVERT DU METAL (BRASSE) DANS LE FILTRE A L`HUILE. APRES INVESTIGATION, UNE "PUSH ROD TUBE" DE LA VALVE D`ADMISSION A ETE TROUVE DEFORME. APRES ANALYSE, LE RESSORT INTERIEUR DE LA VALVE A ET
- [SDR CA090106007](https://openairdocs.org/sdr/CA090106007.md): Wire · burned · Jan 6, 2009 · Amrgen AA5B · Light System Wiring
  > (CAN) DURING ANNUAL INSPECTION FLASHING BEACON WAS FOUND TO BE NOT WORKING. UPON TRACING THE WIRING A BURNED WIRE WAS DISCOVERED AT JUNCTION JP-1-2 BELOW INSTRUMENT PANEL AFT OF CENTER CONSOLE. THIS WAS THE SECOND TIME THAT BURNED WIRES WERE FOUND AT THIS LO
- [SDR CA070423002](https://openairdocs.org/sdr/CA070423002.md): Cylinder · cracked · Apr 23, 2007 · Beech C23 · Reciprocating Engine Cylinder Section
  > (CAN) CRACK FOUND IN CYLINDER. (TC NR 20070423002)
- [SDR 2006FA0000964](https://openairdocs.org/sdr/2006FA0000964.md): Attach Bolt · worn · Sep 19, 2006 · N9239S · Beech C23 · Fuselage Main, Attach Fittings
  > DURING PRE-RUNUP INSPECTION FOR ANNUAL INSPECTION ALTERNATOR BELT NOTED TO BE LOOSE. UPON INSPECTION OF ALTERNATOR FOR BELT TENSION THE FOLLOWING WAS NOTED: THE CASTLE NUT WAS BACKED OUT TO THE POINT OF CHAFING ON THE A+ WIRE, THE WIRE WAS KEEPING THE NUT FR
- [SDR 2005FA0001552](https://openairdocs.org/sdr/2005FA0001552.md): Connecting Rod · broken · Sep 30, 2005 · N23JK · Amrgen AA5B · Reciprocating Engine Power Section
  > CONNECTING ROD TO CRANKSHAFT BEARING FAILED RESULTING IN ROD DISCONNECTING FROM CRANKSHAFT AND SUBSEQUENT CASE PENETRATION AND ENGINE STOPPAGE.
- [SDR 2005FA0001341](https://openairdocs.org/sdr/2005FA0001341.md): Throttle · stiff · Sep 20, 2005 · N938TE · Amrgen AG5B · Fuel Control/Reciprocating Engines
  > ANNUAL INSP, IT WAS DISCOVERED THA THE THROTTLE WOULD NOT REACH THE FULL THROTTLE STOP. THE THROTTLE CABLE WAS DISCONNECTED AND THE THROTTLE ARM WAS MOVED BY HAND. THE THROTTLE WOULD BECOME STIFF AT HALF TRAVEL AND VIRTUALLY IMPOSSIBLE TO MOVE BEFORE REACHIN
- [SDR 2004FA0000169](https://openairdocs.org/sdr/2004FA0000169.md): Pump · inoperative · Dec 15, 2003 · N6756B · Beech C23 · Engine Fuel Pump
  > AIRCRAFT EXPERIENCED ENGINE FAILURE DUE TO LOSS OF FUEL PRESSURE DURING TRAINING FLIGHT. STUDENT FAILED TO TURN ON ALTERNATOR SWITCH AND BATTERY POWER WAS INSUFFICIENT TO OPERATE ELECTRIC FUEL PUMP. FAILURE OCCURRED IN VICINITY OF AIRPORT AND SAFE LANDING WA
- [SDR 2003FA0001146](https://openairdocs.org/sdr/2003FA0001146.md): Drive Gear · inoperative · Sep 29, 2003 · N940TE · Amrgen AG5B · Engine Cranking
  > WHILE ATTEMPTING TO START THE ENGINE, THE STARTER WOULD SPIN BUT WOULD NOT TURN THE ENGINE. THE ENGINE COWL WAS REMOVED AND IT WAS DETERMINED THAT THE STARTER DRIVE GEAR WOULD ENGAGE THE STARTER RING GEAR BUT WOULD NOT TURN. THE STARTER SHAFT WOULD ROTATE IN
- [SDR 2002FA0001191](https://openairdocs.org/sdr/2002FA0001191.md): Lock · overtorqued · Oct 3, 2002 · N837KS · Beech C23 · Reciprocating Engine Power Section
  > LOCKPLATE FOR CRANKSHAFT GEAR RETAINING BOLT NOT SUFFICIENTLY BENT ALLOWING CRANKSHAFT GEAR BOLT TO LOOSEN. CRANKSHAFT GEAR DOWEL PIN SHEARED. RECOMMENDATION TO PREVENT RECURRENCE: CRANKSHAFT GEAR BOLT TORQUE SHOULD BE VERIFIED AT 204IN/LBS AND LOCKPLATE IN
- [SDR CA020503005](https://openairdocs.org/sdr/CA020503005.md): Crankcase · cracked · Apr 11, 2002 · Beech C23 · Reciprocating Engine Power Section
  > (CAN) DURING A 50 HOUR INSPECTION, AN OIL LEAK WAS NOTED ON THE CRANKCASE HOUSING. FURTHER INSPECTION REVEALED A CRACK ON THE FORWARD LEFT HAND PART OF THE CASE.
- [SDR AUS20020717](https://openairdocs.org/sdr/AUS20020717.md): Screw · missing · Mar 20, 2002 · Beech C23 · Engine Air Intake System
  > (AUS) CARBURETTOR HEAT INOPERATIVE DUE TO MISSING SCREWS (3OFF) AND NUTS ALLOWING THE BUTTERFLY VALVE TO ROTATE FREELY ON THE SHAFT PNO 169-910049-47.
- [SDR 2002FA0000096](https://openairdocs.org/sdr/2002FA0000096.md): Engine · leaking · Dec 10, 2001 · N999TE · Amrgen AG5B · Reciprocating Engine Oil System
  > ENGINE DEVELOPED OIL LEAK AT THE TOP OF THE CASE NEAR THE ACCESSORY CASE. LEAK BEGAN DURING INITIAL ENGINE RUN. LEAK IS APPX 1/8 QT PER 6 HRS. LEAK COULD NOT BE FIXED WITHOUT REMOVING ENGINE.
- [SDR CA010118012](https://openairdocs.org/sdr/CA010118012.md): Stop · bent · Dec 1, 2000 · Amrgen AA5B · Ailerons
  > (CAN) LEFT AND RIGHT AILERON STOPS FOUND SEVERELY BENT. POSSIBLE WING DAMAGE.
- [SDR CA001129004](https://openairdocs.org/sdr/CA001129004.md): Cylinder · cracked · Nov 1, 2000 · Beech C23 · Cylinder Head Temperature (CHT) Indicating System
  > (CAN) THE CYLINDER ASSEMBLY CRACKED AT THE CYLINDER HEAD FLANGE. THE CRACK EXTENDED HALF WAY THROUGH THE CIRCUMFERENCE OF THE CYLINDER. (X)
- [SDR CA001129010](https://openairdocs.org/sdr/CA001129010.md): Cylinder · cracked · Nov 1, 2000 · Beech C23 · Cylinder Head Temperature (CHT) Indicating System
  > (CAN) THE CYLINDER ASSEMBLY CRACKED AT THE CYLINDER HEAD FLANGE. THE CRACK EXTENDED HALF WAY THROUGH THE CIRCUMFERENCE OF THE CYLINDER. (X)
- [SDR 20000811SH013](https://openairdocs.org/sdr/20000811SH013.md): Exhaust Valve · cracked · Jul 24, 2000 · N28384 · Amrgen AA5B · Reciprocating Engine Cylinder Section
  > EXHAUST VALVE BROKE ON NR 1 CYLINDER. HALF OF VALVE HEAD CAME OFF CAUSING DAMAGE TO NR 1 CYLINDER AND THEN BROKE INTO 3 PIECES. TWO PIECES LODGED IN THE MUFFLER. ONE SMALL PIECE TRAVELLED THROUGH THE INTAKE SYSTEM TO NR 4 CYLINDER WHERE IT DID DAMAGE TO THE
- [SDR 20000515SH020](https://openairdocs.org/sdr/20000515SH020.md): Float · damaged · Mar 20, 2000 · N4553C · Amrgen AA5B · Fuel Control/Reciprocating Engines
  > ENGINE WOULD NOT RUN UNLESS MIXTURE WAS LEANED ALMOST TO IDLE CUT OFF. IT WAS VERY RICH AND WOULD NOT RUN ABOVE 1,500 RPM. FOUND PLASTIC FLOAT TO BE FILLED WITH AVGAS TWO OF THREE CHAMBERS. FLOAT, P/N 30-800, CARBURETOR ASSY DATE, 9-97. (X)
- [SDR 20000517SH024](https://openairdocs.org/sdr/20000517SH024.md): Float · damaged · Mar 20, 2000 · N4553C · Amrgen AA5B · Fuel Control/Reciprocating Engines
  > ENGINE WOULD NOT RUN UNLESS MIXTURE WAS LEANED ALMOST TO IDLE CUT-OFF, IT WAS VERY RICH AND WOULD NOT RUN ABOVE 1,500 RPM. FOUND PLASTIC FLOAT FILLED 100 II AVGAS TWO OF THREE CHAMBERS, FLOAT PN 30-800 CARBURETOR ASSY, DATE 9-97. (X)
- [SDR 2000ZZZX265](https://openairdocs.org/sdr/2000ZZZX265.md): Cylinder · mismanufactured · Jan 14, 2000 · Reciprocating Engine Cylinder Section
  > PORT DOES NOT ALIGN WITH EXHAUST GASKET. ON RECEIPT OF CYLINDERS, THEY ARE CHECKED FOR CONFORMITY. ONE OF THE CHECKS IS PLACING A GASKET ON THE EXHAUST STUDS TO CHECK FOR CONCENTRICITY WITH THE PORT. ANOTHER CHECK IS TO SEE IF THE CYLINDER HEAD TEMPERATURE D
- [SDR 99ZZZX3607](https://openairdocs.org/sdr/99ZZZX3607.md): Valve · failed · Aug 25, 1999 · N74641 · Gulstm AA5B · Reciprocating Engine Cylinder Section
  > REMOVED NR 3 CYLINDER DUE TO BROKEN EXHAUST VALVE. VALVE BROKE IN-FLIGHT AND ENGINE STARTED RUNNING ROUGH. REPLACED CYLINDER ASSEMBLY, PISTON AND RINGS. ENGINE HAS 888.41 HRS SMOH.
- [SDR AU981080](https://openairdocs.org/sdr/AU981080.md): Hub · cracked · Aug 27, 1998 · Propeller Hub Section
  > (AUS) PROPELLER HUB CRACKED IN TWO AREAS. FOUND DURING INSPECTION IAW AD/PFP/13 AMDT3.
- [SDR CA980908032](https://openairdocs.org/sdr/CA980908032.md): Rod · disconnected · Aug 20, 1998 · Beech C23 · Reciprocating Engine Power Section
  > (CAN) NR 1 AND NR 3 CONNECTING RODS WERE FOUND DISCONNECTED FROM THE CRANKSHAFT. ENGINE IS BEING SENT FOR INVESTIGATION.
- [SDR 98ZZZX3035](https://openairdocs.org/sdr/98ZZZX3035.md): Hose · collapsed · Jun 18, 1998 · N4542L · Gulstm AA5B · Reciprocating Engine Oil System
  > IN CRUISE FLIGHT, ENGINE BEGAN TO RUN ROUGH. THE PILOT NOTED LOST OIL PRESSURE. HE CONTACTED ATC WHO DIRECTED HIM TO NEAREST AIRPORT. THE ENGINE KEPT DETERIORATING AND WHEN PILOT HAD THE FIELD MADE, SHUT ENGINE DOWN TO AVOID A CATASTROPHIC FAILURE. ACFT LA
- [SDR AU980560](https://openairdocs.org/sdr/AU980560.md): Bearing · loose · May 21, 1998 · Magneto/Distributor
  > (AUS) MAGNETO BEARING SPINNING IN PLATE.
- [SDR CA980504026](https://openairdocs.org/sdr/CA980504026.md): Cylinder · cracked · Apr 28, 1998 · Beech C23 · Reciprocating Engine Cylinder Section
  > (CAN) FOUND THE ALUMINUM HEAD ON NR 3 CYLINDER CRACKED AT THE TOP OF THE STEEL BARREL.
- [SDR AU980411](https://openairdocs.org/sdr/AU980411.md): Diode · failed · Mar 26, 1998 · Gulstm AA5B · DC Regulator
  > (AUS) DURING CRUISE, THE 'OVER-VOLTAGE' PROTECTION ZENER DIODE FAILED, CAUSING EXTENSIVE FAILURE OF ELECTRICAL AND AVIONICS EQUIPMENT.
- [SDR CA971021016](https://openairdocs.org/sdr/CA971021016.md): Rotor · broken · Oct 10, 1997 · Beech C23 · Magneto/Distributor
  > (CAN) AFTER STARTING THE ENGINES, A CHECK OF THE MAGNETOS REVEALED THE RIGHT HAND MAGNETO WAS DEAD. THE AIRCRAFT WAS TAKEN TO MAINTENANCE AND THE TECHNICIAN FOUND THE CAM BROKEN.
- [SDR AU970670](https://openairdocs.org/sdr/AU970670.md): Crankcase · cracked · Jun 6, 1997 · Reciprocating Engine Power Section
  > (AUS) ENGINE CRANKCASE CRACKED IN WEB BETWEEN CYLINDER BASE PADS -CRANKSHAFT GEAR SPALLED - CAM GEAR TEETH SPALLED - FUEL PUMP IDLER GEAR TEETH SPALLED - OIL PUMP HOUSING SCORED - STARTER RING GEAR CHIPPED
- [SDR 97ZZZX3089](https://openairdocs.org/sdr/97ZZZX3089.md): Throtle Body · stuck open · Jun 3, 1997 · N28339 · Gulstm AA5B · Fuel Control/Reciprocating Engines
  > THROTTLE STUCK OPEN. GAINED ACCESS TO AIRCRAFT ENGINE THROTTLE BODY BY REMOVING RT AND LT TOP ENGINE COWLINGS AND LOWER ENGINE COWL. RAN THROTTLE THROUGH AND SAW THROTTLE ARM LOOSE AND SLIPPING ON CARBURETOR. REMOVED AND INSPECTED ARM SERRATIONS AND CARBURET
- [SDR AU970541](https://openairdocs.org/sdr/AU970541.md): Coil · open · May 14, 1997 · Magneto/Distributor
  > (AUS) MAGNETO COIL OPEN CIRCUITED ON HIGH TENSION SIDE
- [SDR AU971134](https://openairdocs.org/sdr/AU971134.md): Spark Plug · intermittent · Apr 15, 1997 · Spark Plug/Igniter
  > (AUS) SPARK PLUGS INTERMITTENT IN OPERATION.
- [SDR 97ZZZX2854](https://openairdocs.org/sdr/97ZZZX2854.md): Valve · failed · Apr 12, 1997 · N38X · Gulstm AA5B · Reciprocating Engine Cylinder Section
  > VALVE MALFUNCTION OCCURRED DURING TAKEOFF AT APPROXIMATELY 2,450 RPM. (AIRPORT AT 5,100 FEET). OAT 20 DEGREES FAHRENHEIT.
- [SDR 97ZZZX1879](https://openairdocs.org/sdr/97ZZZX1879.md): Rod Bearing · failed · Apr 3, 1997 · N13FC · Beech C23 · Reciprocating Engine Power Section
  > METAL WAS FOUND IN THE SCREEN AND OIL FILTER AT THE 100-HOUR INSPECTION. THE CYLINDERS WERE REMOVED AND NO EVIDENCE OF METAL WEAR COULD BE FOUND. THE AIRCRAFT WAS PUT BACK INTO SERVICE AND FLOWN FOR APPROXIMATELY 50 HOURS. THE SCREENS AND FILTERS WERE AGAIN
- [SDR 96ZZZX6141](https://openairdocs.org/sdr/96ZZZX6141.md): Retain Screw · loose · Dec 12, 1996 · N28794 · Gulstm AA5B · Fuel Control/Reciprocating Engines
  > PILOT REPORTED ENIGNE HAD STARTED RUNNING ROUGH AND EGT AT PEAK WITH MIXTURE FULL RICH. INVESTIGATION REVEALED MIXTURE CONTROL VALVE END PLAY OF APPROX.0625 INCH. PRECISION AIRMOTIVE SB MSA-6 HAD NOT BEEN C/W. RETENTION SCREW P/N 15-B395 WAS FOUND TO HAVE
- [SDR CA960826093](https://openairdocs.org/sdr/CA960826093.md): Rotor · broken shaft · Aug 14, 1996 · Beech C23 · Magneto/Distributor
  > (CAN) THE MAGNETO DID NOT FUNCTION DURING GROUND RUN. THE MAGNETO WAS REPLACED. INSPECTION OF THE FAULTY MAGNETO REVEALED THE SLOTTED END OF THE ROTOR SHAFT BROKE NEAR THE SHOULDER.
- [SDR CA960826091](https://openairdocs.org/sdr/CA960826091.md): Cable · broken · Aug 13, 1996 · Beech C23 · Power Lever
  > (CAN) AT RUN-UP THE PILOT NOTED THAT THE ENGINE DID NOT RESPOND TO THROTTLE INPUT. THE ENGINE WAS SHUTDOWN BY THE MIXTURE CONTROL AND THE AIRCRAFT TOWED TO THE HANGAR. MAINTENANCE FOUND THE INNER CABLE OF THE THROTTLE CABLE BROKEN.
- [SDR 96ZZZX3876](https://openairdocs.org/sdr/96ZZZX3876.md): Cylinder · cracked · Jul 1, 1996 · N63TW · Beech C23 · Reciprocating Engine Cylinder Section
  > INSPECTION FOUND NR 4 CYLINDER CRACKED FROM OUTSIDE RADIUS OF INTAKE VALVE TO OUTSIDE RADIUS OF EXHAUST VALVE. CYLINDER HEAD SPLIT OPEN BLOWING BOTTOM SPARK PLUG FROM CYLINDER.
- [SDR 96ZZZX4954](https://openairdocs.org/sdr/96ZZZX4954.md): Distributor Blk · defective · Jun 19, 1996 · N66343 · Beech C23 · Magneto/Distributor
  > DISASSEMBLED RT MAGNETO. FOUND EXCESSIVE CARBON RESIDUE IN COIL AREA. FURTHER INVESTIGATION REVEALED THE ROTOR ARM ON GEAR ASSY HAD BECOME LOOSE ALLOWING APPROXIMATELY 30 DEGREE MOVEMENT SIDE TO SIDE. SUBMITTER RECOMMENDS 500-HOUR INSPECTION OF BLOCK AND GE

Next page: https://openairdocs.org/engine/lycoming-o-360-a4k/reports.md?page=2

## 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 = 'O360A4K'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/engine/lycoming-o-360-a4k/reports

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