# Service difficulty reports: Continental IO-520-BA

A list on [Continental IO-520-BA](https://openairdocs.org/engine/continental-io-520-ba.md).

Newest first. General aviation reporting is voluntary.

Page 1 of 3 · 111 reports

- [SDR 2026FA0000631](https://openairdocs.org/sdr/2026FA0000631.md): Impulse Coupling · destroyed · Jul 8, 2026 · N231S · Beech V35 · Magneto/Distributor
  > THE PILOT/OWNER ATTEMPTED TO START THE PLANE. AFTER THE FIRST FAILED START, THE PROPELLER STOPPED SPINNING DURING THE SECOND ATTEMPTED START. THE PILOT ABORTED THE START AND ALERTED ME TO A GRINDING SOUND. UPON INSPECTING THE ENGINE, THE LEFT MAGNETO HOUSING H
- [SDR 2018FA0000470](https://openairdocs.org/sdr/2018FA0000470.md): Control Cable · corroded · Nov 1, 2018 · N9568Q · Beech V35 · Aileron Control System
  > DURING CRUSE ALTITUDE 7500FT, THERE WAS A LOSS OF AILERON CONTROL. THE AIRCRAFT DRIFTED TO THE RIGHT AND WAS CORRECTED BY ROLLING LEFT. THE PILOT THEN FELT SOMETHING BREAK AND THE RIGHT WING DROPPED. THE PILOT TURNED THE AILERON CONTROL YOKE TO THE LEFT, UNTI
- [SDR 2018FA0000460](https://openairdocs.org/sdr/2018FA0000460.md): Gasket · failed · Sep 1, 2017 · N285LA · Beech V35B · Engine Air Intake System
  > INDUCTION AIR FILTER INSTALLED WITH STC APPROVAL. GASKET FAILING. GASKET IS MISSING IT CAN COME LOOSE AND BE INGESTED IN TO THE ENGINE. 500 HR TT.
- [SDR 2017FA0000280](https://openairdocs.org/sdr/2017FA0000280.md): Magneto · faulty · Jun 26, 2017 · N35MS · Beech 35BEECH · Magneto/Distributor
  > WHILE IN FLIGHT, THE TACH SHOWED THE RIGHT MAG GOING OUT OF SYNC WITH LEFT FOR BRIEF MOMENTS. THE TACH INDICATION WOULD SCROLL DOWN AND BACK UP DURING THESE BRIEF EVENTS. THE ENGINE CONTINUED TO RUN SMOOTH AND AT A CONSTANT RPM. ON THE GROUND, A MAG CHECK S
- [SDR 2017FA0000416](https://openairdocs.org/sdr/2017FA0000416.md): Brake Disc · failed · Oct 20, 2016 · N688M · Beech F33A · Landing Gear Brake System
  > RIGHT MAIN BRAKE DISC NON-REPAIRABLE DUE TO FAILURE AT ALL THREE MOUNTING POINTS. ORIGINAL EQUIPMENT.
- [SDR PAIR201605203338](https://openairdocs.org/sdr/PAIR201605203338.md): Crankcase · cracked · May 19, 2016 · N1880L · Beech V35B · Reciprocating Engine Power Section
  > COMPLIED WITH AD 77-13-22 & FOUND A CRACK APPROX 1 INCH LONG IN THE CRANKCASE CRITICAL AREA EXTENDING DOWNWARD NEAR THE UPPER FWD STUD OF NR 1 CYLINDER. ENG MANUFACTURED IN 1977 WITH TOTAL TIME OF 765.5 HOURS, 109.6 HOURS SINCE OVERHAUL IN 2006.
- [SDR 2016FA0000074](https://openairdocs.org/sdr/2016FA0000074.md): Camshaft · cracked · Dec 26, 2015 · N61SM · Beech A36 · Reciprocating Engine Power Section
  > DURING CLIMB OUT, PIC HEARD ENGINE NOISE. AT 6000 AGL ENGINE SHUTDOWN AND PILOT LANDED AT NEAREST AIRPORT. A SUBSEQUENT ENGINE TEARDOWN REVEALED APPROXIMATELY 12 CAM GEAR TEETH DAMAGED ON PN 655516A.
- [SDR 2011FA0000347](https://openairdocs.org/sdr/2011FA0000347.md): Bearing · spun · May 6, 2011 · N2561T · Navion STCNAVION · Reciprocating Engine Power Section
  > ENGINE BEGAN RUNNING EXTREMELY ROUGH AND PRODUCED ONLY PARTIAL POWER. MADE A PRECAUTIONARY LANDING WITHIN 5 MINUTES. ON TEARDOWN, DISCOVERED NR 2 MAIN BEARING HAD SPUN AND CUT OIL TO NR 3 ROD BEARING WHICH OVERHEATED. NR 3 AND NR 4 RODS SEPARATED FROM CRANK
- [SDR 2010FA0000538](https://openairdocs.org/sdr/2010FA0000538.md): Rib · cracked · May 17, 2010 · N103SM · Beech A36 · Trailing Edge Flaps
  > DURING AN ANNUAL INSP, (1) NOSE RIB WAS FOUND CRACKED IN THE RT FLAP. IT IS THE RIB LOCATED DIRECTLY BENEATH THE ATTACH BRACKET MOUNTED ON THE SKIN.
- [SDR 2010FA0000580](https://openairdocs.org/sdr/2010FA0000580.md): Rib · cracked · May 17, 2010 · N1886W · Beech A36 · Leading Edge Devices
  > ((OF1R)) DURING AN ANNUAL INSP, 1 RT FLAP NOSE RIB WAS FOUND CRACKED. IT IS THE RIB LOCATED DIRECTLY BENEATH THE ACTUATOR ATTACH BRACKET. IT WAS CRACKED IN THE RELIEF CUTOUT FOR THE FLANGES AND THROUGH THE MOST FWD NUTPLATE RIVET HOLES. VERY INACCESSABLE A
- [SDR 2008FA0000436](https://openairdocs.org/sdr/2008FA0000436.md): Cylinder · cracked · May 6, 2008 · N2024W · Beech V35 · Reciprocating Engine Cylinder Section
  > CRACK VISIBLE AT NR 4 CYLINDER. CRACK APPEARS TO START AT CASTING ANOMALY, CONTINUES TO EDGE OF FINS, AND IS VISIBLE AT THE FIRST FOUR COOLING FINS. ALSO VERIFIED, THROUGH USE OF EDDY CURRENT, THAT THE CRACK CONTINUES TO THE SPARK PLUG HOLE. ALL OTHER CYLINDER
- [SDR XGN2008F00001](https://openairdocs.org/sdr/XGN2008F00001.md): Cylinder Head · cracked · Jan 7, 2008 · N1194A · Beech 36BEECH · Reciprocating Engine Cylinder Section
  > ENGINE CYLINDER HEAD CRACKED. (K)
- [SDR XGN2008F00002](https://openairdocs.org/sdr/XGN2008F00002.md): Cylinder Head · cracked · Jan 7, 2008 · N1194A · Beech 36BEECH · Reciprocating Engine Cylinder Section
  > ENGINE CYLINDER HEAD CRACKED. (K)
- [SDR XGN2008F00000](https://openairdocs.org/sdr/XGN2008F00000.md): Cylinder Head · cracked · Dec 7, 2007 · N1194A · Beech 36BEECH · Reciprocating Engine Cylinder Section
  > ENGINE CYLINDER HEAD CRACKED. (K)
- [SDR 2007FA0001054](https://openairdocs.org/sdr/2007FA0001054.md): Cylinder Head · cracked · Nov 21, 2007 · N1194A · Beech 36BEECH · Reciprocating Engine Cylinder Section
  > CRACKED BEHIND INJECTOR BETWEEN FIRST AND THIRD FIN. SAME AS ALL THE OTHERS. THE (NEW) E-SERIES CYLINDER HEAD IS DEFECTIVE. (K)
- [SDR 2007FA0001055](https://openairdocs.org/sdr/2007FA0001055.md): Cylinder Head · cracked · Nov 21, 2007 · N1194A · Beech 36BEECH · Reciprocating Engine Cylinder Section
  > CYLINDER HEAD CRACKED BEHIND INJECTOR BETWEEN FIN NR 1 AND 3. DEFECTIVE MFG PROCESS. (K)
- [SDR XGN2007F00029](https://openairdocs.org/sdr/XGN2007F00029.md): Cylinder Head · cracked · Nov 21, 2007 · N1194A · Beech 36BEECH · Reciprocating Engine Cylinder Section
  > CYLINDER HEAD CRACKED BEHIND INJECTOR BETWEEN FIN NR1 AND NR 3.
- [SDR XGN2007F00030](https://openairdocs.org/sdr/XGN2007F00030.md): Cylinder Head · cracked · Nov 21, 2007 · N1194A · Beech 36BEECH · Reciprocating Engine Cylinder Section
  > CYLINDER HEAD CRACKED BEHIND INJECTOR BETWEEN 1ST AND 3RD FING. SAME AS ALL THE OTHERS! THE (NEW E-SERIES) CYLINDER HEAD IS DEFECTIVE AND MFG KNOWS IT AND THEY KEEP SELLING THEM. (K)
- [SDR 2007FA0001087](https://openairdocs.org/sdr/2007FA0001087.md): Rib · cracked · Nov 9, 2007 · N4475S · Beech V35B · Trailing Edge Flaps
  > AT ANNUAL INSPECTION FOUND RT FLAP ROD ATTACH POINT RIB CRACKED. (K)
- [SDR XGN2007F00026](https://openairdocs.org/sdr/XGN2007F00026.md): Cylinder · cracked · Sep 5, 2007 · N1194A · Beech 36BEECH · Reciprocating Engine Cylinder Section
  > CRACKED BEHIND INJECTOR BETWEEN 1ST AND 3RD FIN. (K)
- [SDR XGN2007F00020](https://openairdocs.org/sdr/XGN2007F00020.md): Cylinder Head · cracked · Jul 18, 2007 · N1194A · Beech 36BEECH · Reciprocating Engine Cylinder Section
  > ECI, REV 3, E SERIES, CYLINDER ASSY, 611.9. SINCE NEW CRACKED ON TOP OF CYLINDER BEHIND FUEL INJECTOR BETWEEN THE (1ST) AND (3RD) FIN. COMPRESSION CHECK WITH SOAPY WATER REVEALED CRACK. CAN NOT BE SEEN WITH THE NAKED EYE. (K)
- [SDR XGN2007F00022](https://openairdocs.org/sdr/XGN2007F00022.md): Cylinder · cracked · Jul 18, 2007 · N1194A · Beech 36BEECH · Reciprocating Engine Cylinder Section
  > REV 3, E SERIES CYLINDER ASSY 611.9 SINCE NEW CRACKED O TOP OF CYLINDER BEHIND FUEL INJECTOR BETWEEN THE FIRST AND THIRD FIN. COMPRESSION CHECK WITH SOAPY WATER REVEALED CRACK. CAN NOT BE SEEN WITH THE NAKED EYE. (K)
- [SDR XGN2007F00023](https://openairdocs.org/sdr/XGN2007F00023.md): Cylinder · cracked · Jul 18, 2007 · N1194A · Beech 36BEECH · Reciprocating Engine Cylinder Section
  > REV 3, E SERIES, CYL ASSY 611.9 SINCE NEW. CRACKED ON TOP OF CYLINDER BEHIND FUEL INJECTOR BETWEEN THE FIRST AND THIRD FIN. COMPRESSION CHECK WITH SOAPY WATER REVEALED CRACK CAN NOT SEE WITH THE NAKED EYE. (K)
- [SDR XGN2007F00024](https://openairdocs.org/sdr/XGN2007F00024.md): Cylinder · cracked · Jul 18, 2007 · N1194A · Beech 36BEECH · Reciprocating Engine Cylinder Section
  > REV 3, E SERIES CYLINDER ASSY 611.9. SINCE NEW, CRACKED ON TOP OF CYLINDER BEHIND FUEL INJECTOR BETWEEN FIRST AND THIRD FIN. COMPRESSION CHECK WITH SOAPY WATER REVEALED CRACK. CAN NOT SEE WITH THE NAKED EYE. (K)
- [SDR 2007FA0000391](https://openairdocs.org/sdr/2007FA0000391.md): Magneto · failed · Apr 11, 2007 · N11BX · Beech F33A · Magneto/Distributor
  > DURING NORMAL FLIGHT, VFR CONDITIONS, LT MAGNETO FAILED TO CONTINUE FIRING. AC LANDED WITHOUT INCIDENT. UPON TROUBLESHOOTING LT MAGNETO FOUND TO ONLY FIRE ON ONE LEAD. MAGNETO REPLACED WITH NEW UNIT. DEFECTIVE MAGNETO FOUND TO HAVE LOOSE PARTS RATTLING INS
- [SDR XGN2007F00001](https://openairdocs.org/sdr/XGN2007F00001.md): Cylinder Head · cracked · Dec 26, 2006 · N1194A · Beech 36BEECH · Reciprocating Engine Cylinder Section
  > CRACKED CYLINDER HEAD. (K)
- [SDR 2006FA0001207](https://openairdocs.org/sdr/2006FA0001207.md): Case · damaged · Nov 22, 2006 · N205DB · Beech V35 · Engine (Reciprocating)
  > ENGINE LT CASE, MALT DEVELOPED HOLE APPROX 6 INCHES X 4 INCHES AS ROD-PISTON APPEARS TO BE MISSING FOR NR 4 CYLINDER. ENGINE OPERATED: (104 HOURS - 2004), (14 HOURS - 2005), (12 HOURS - 2006). PROPELLER RECENTLY SHIMMED BLADE NR 3, RED DYE AROUND PROP SEAL.
- [SDR 2006FA0001229](https://openairdocs.org/sdr/2006FA0001229.md): Line · broken · Nov 22, 2006 · N205DB · Beech V35 · Reciprocating Engine Oil System
  > STARFLEX 193, LOW PRESSURE HOSE, LP MIL-H-50555 WAS USED TO CONNECT OIL COOLER TO FIREWALL FITTING. OIL PRESSURE WILL RUN BETWEEN 50-100 PSI IN LINE. HOSE BROKE AT FITTING AT OIL COOLER OUTLET, ALL OIL WAS PUMPED OUT OF ENGINE CAUSING ROD TO BE RAMMED THROU
- [SDR XGN2007F00002](https://openairdocs.org/sdr/XGN2007F00002.md): Cylinder Head · cracked · Oct 10, 2006 · N1096W · Beech F33A · Reciprocating Engine Cylinder Section
  > CRACKED CYLINDER HEADS. (K)
- [SDR XGN2007F00003](https://openairdocs.org/sdr/XGN2007F00003.md): Cylinder Head · cracked · Oct 10, 2006 · N1096W · Beech F33A · Reciprocating Engine Cylinder Section
  > CRACKED CYLINDER HEADS. (K)
- [SDR XGN2007F00017](https://openairdocs.org/sdr/XGN2007F00017.md): Cylinder · cracked · Oct 10, 2006 · N1096W · Beech F33A · Reciprocating Engine Cylinder Section
  > CRACKED CYLINDER HEADS. (K)
- [SDR XGN2007F00019](https://openairdocs.org/sdr/XGN2007F00019.md): Cylinder · cracked · Oct 10, 2006 · N1096W · Beech F33A · Reciprocating Engine Cylinder Section
  > CRACKED CYLINDER HEADS. (K)
- [SDR XGN2007F00018](https://openairdocs.org/sdr/XGN2007F00018.md): Cylinder · cracked · Sep 25, 2006 · N1194A · Beech 36BEECH · Reciprocating Engine Cylinder Section
  > CRACKED CYLINDER HEAD. (K)
- [SDR XGN2006F00005](https://openairdocs.org/sdr/XGN2006F00005.md): Cylinder · cracked · May 23, 2006 · N1194A · Beech 36BEECH · Reciprocating Engine Cylinder Section
  > CYLINDER HEAD CRACKED IN THE EXHAUST PORT AREA. (K)
- [SDR XGN2006F00006](https://openairdocs.org/sdr/XGN2006F00006.md): Cylinder · cracked · May 23, 2006 · N1194A · Beech 36BEECH · Reciprocating Engine Cylinder Section
  > CYLINDER HEADS CRACKED IN THE EXHAUST PORT AREA. (K)
- [SDR XGN2006F00007](https://openairdocs.org/sdr/XGN2006F00007.md): Cylinder · cracked · May 23, 2006 · N1194A · Beech 36BEECH · Reciprocating Engine Cylinder Section
  > CYLINDER HEAD CRACKED IN THE EXHAUST PORT AREA. (K)
- [SDR XGN2006F00008](https://openairdocs.org/sdr/XGN2006F00008.md): Cylinder · cracked · May 23, 2006 · N1194A · Beech 36BEECH · Reciprocating Engine Cylinder Section
  > CYLINDER HEAD CRACKED IN THE EXHAUST PORT AREA. (K)
- [SDR XGN2006F00009](https://openairdocs.org/sdr/XGN2006F00009.md): Cylinder · cracked · May 23, 2006 · N1194A · Beech 36BEECH · Reciprocating Engine Cylinder Section
  > CYLINDER HEAD CRACKED IN THE EXHAUST PORT AREA. (K)
- [SDR XGN2006F00011](https://openairdocs.org/sdr/XGN2006F00011.md): Cylinder · cracked · May 23, 2006 · N236CH · Beech A36 · Reciprocating Engine Cylinder Section
  > CYLINDER HEAD CRACKED IN THE EXHAUST PORT AREA. (K)
- [SDR X6N2006F00000](https://openairdocs.org/sdr/X6N2006F00000.md): Cylinder · cracked · May 23, 2006 · N236CH · Beech A36 · Reciprocating Engine Cylinder Section
  > CYLINDER HEAD CRACKED IN THE EXHAUST PORT AREA. (K)
- [SDR XGN2006F00000](https://openairdocs.org/sdr/XGN2006F00000.md): Cylinder · cracked · Apr 14, 2006 · N1096W · Beech F33A · Reciprocating Engine Cylinder Section
  > CYLINDER HEAD CRACK BETWEEN THE EXHAUST VALVE SEAT AND THE BOTTOM SPARK PLUG HOLE. DUE TO THE CYLINDER HEAD FAILURES, WE ARE DOING COMPRESSION CHECKS AT 25 HR INTERVALS. (K)
- [SDR XGN2006F00002](https://openairdocs.org/sdr/XGN2006F00002.md): Cylinder · cracked · Apr 14, 2006 · N1096W · Beech F33A · Reciprocating Engine Cylinder Section
  > CYLINDER HEAD CRACKED. (K)
- [SDR XGN2006F00069](https://openairdocs.org/sdr/XGN2006F00069.md): Cylinder · cracked · Apr 9, 2006 · N1194A · Beech 36BEECH · Reciprocating Engine Cylinder Section
  > CYLINDER HEAD CRACKED IN THE EXHAUST PORT AREA. (K)
- [SDR XGN2006F00026](https://openairdocs.org/sdr/XGN2006F00026.md): Cylinder · cracked · Apr 6, 2006 · N361BC · Beech 36BEECH · Reciprocating Engine Cylinder Section
  > CYLINDER HEADS CRACKED IN THE EXHAUST PORT AREA. (K)
- [SDR XGN2006F00012](https://openairdocs.org/sdr/XGN2006F00012.md): Cylinder · cracked · Apr 4, 2006 · N236CH · Beech A36 · Reciprocating Engine Cylinder Section
  > CYLINDER HEAD CRACKED IN THE EXHAUST PORT AREA. (K)
- [SDR 2006FA0000183](https://openairdocs.org/sdr/2006FA0000183.md): Piston · damaged · Feb 3, 2006 · N1069F · Beech E33A · Reciprocating Engine Power Section
  > ALL 6 PISTON SKIRTS HITTING CASE. ALL PISTON DAMAGE BEYOND REPAIR. (K)
- [SDR XGN2005F00011](https://openairdocs.org/sdr/XGN2005F00011.md): Cylinder · cracked · Oct 11, 2005 · N1194A · Beech 36BEECH · Reciprocating Engine Cylinder Section
  > CRACKS FOUND AT THE 50 HOUR INSPECTION. ON GOING PROBLEM WITH THE ECI CYLINDERS. (K)
- [SDR XGN2005F00012](https://openairdocs.org/sdr/XGN2005F00012.md): Cylinder · cracked · Oct 11, 2005 · N1194A · Beech 36BEECH · Reciprocating Engine Cylinder Section
  > CRACKS FOUND AT THE 50 HR INSPECTION. ON GOING PROBLEM WITH THE ECI CYLINDERS. (K)
- [SDR XGN2005F00013](https://openairdocs.org/sdr/XGN2005F00013.md): Cylinder · cracked · Oct 11, 2005 · N1194A · Beech 36BEECH · Reciprocating Engine Cylinder Section
  > HEADS FOUND CRACKED AT THE 100 HR INSPECTION. 5 OF THE 6 CYLINDERS HAVE BEEN CHANGED IN THE LAST 400 HOURS OF OPERATION. THIS CONTINUES TO BE AN ON GOING PROBLEM. (K)
- [SDR XGN2005F00015](https://openairdocs.org/sdr/XGN2005F00015.md): Cylinder · cracked · Oct 11, 2005 · N1096W · Beech F33A · Reciprocating Engine Cylinder Section
  > THESE CYLINDERS SHOWED TO BE CRACKED IN THE EXHAUST SIDE OF THE HEAD. THE LEAKS SHOWED UP WHEN DOING THE COMPRESSION CHECK. DUE TO THE NR OF CRACKED CYLINDER HEADS, COMPRESSION CHECK DOEN EVERY 50 HOURS. (K)

Next page: https://openairdocs.org/engine/continental-io-520-ba/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 = 'IO520BA'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/engine/continental-io-520-ba/reports

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