# Service difficulty reports: Superior IO-320 series

A list on [Superior IO-320 series](https://openairdocs.org/engine/superior-io-320-series.md).

Newest first. General aviation reporting is voluntary.

- [SDR 2026FA0000200](https://openairdocs.org/sdr/2026FA0000200.md): Impulse Coupling · destroyed · Jun 30, 2025 · N2VQ · Piper PA30 · Magneto/Distributor
  > PILOT REPORT OF HEARING A BANG AT STARTUP. WHILE BRINGING THE PLANE TO THE MAINTENANCE SHOP ACROSS THE AIRFIELD, THE PILOT HEARD A LOUD GRINDING NOISE COMING FROM THE LH ENGINE, HE THEN SHUT THE ENGINE DOWN. IT WAS DISCOVERED DURING VISUAL INSPECTION THAT THE
- [SDR 2024FA0000231](https://openairdocs.org/sdr/2024FA0000231.md): Hose Connector · disconnected · Dec 9, 2023 · N752JB · Amtr VANSRV6A · Navigation System
  > BRASS 1/4" HOSE COUPLING CAME DISCONNECTED INSIDE THE COCKPIT WHERE THE PITOT LINE ENTERS THE CABIN. THIS RESULTED IN A LOSS OF INDICATED AIRSPEED DURING CRUISE FLIGHT. LIKELY CAUSE OF FAILURE WAS IMPROPER ASSEMBLY WHEN ORIGINALLY INSTALLED. A NEW COUPLING WAS
- [SDR 2022FA0000663](https://openairdocs.org/sdr/2022FA0000663.md): Bearing · worn · Nov 2, 2022 · N593EH · Cirrus SR20 · Magneto/Distributor
  > CROSSMEMBER ON P/N M3819 COMES LOOSE CAUSING BRUSH WEAR THAT BREAKS TAB ON P/N K3975 TAN.
- [SDR 2022FA0000631](https://openairdocs.org/sdr/2022FA0000631.md): Carburetor · leaking · Feb 24, 2022 · N602FT · Piper PA28161 · Fuselage Structure (General)
  > MARVEL-SCHEBLER CARBURATOR WAS REMOVED DO TO SIGNS OF FUEL LEAKING AROUND CARB BOWL HALFS AND THROTTLE BODY. COMPLIED WITH SB 366C TOTAL TIME OF CARB. SINCE OVERHAUL WAS 198 HRS.
- [SDR 2016FA0000467](https://openairdocs.org/sdr/2016FA0000467.md): Carburetor · loose · Oct 3, 2016 · N63WT · Fuel Control/Reciprocating Engines
  > DURING ANNUAL INSPECTION NOTICED DARK STAIN BETWEEN FLOAT BOWL AND TOP OF CARB (BUT NO FUEL STAIN). WIGGLED AIR BOX AND DISCOVERED THE FLOAT BOWL WAS LOOSE EVEN THOUGH BOWL SCREWS AND LOCK TABS WERE STILL IN PLACE. THERE APPEARS TO BE SIGNIFICANT PLAY IN THE S
- [SDR 2016FA0000023](https://openairdocs.org/sdr/2016FA0000023.md): Receiver · malfunctioned · Jan 18, 2016 · N8706Y · Piper PA30 · Global Positioning System
  > AIRCRAFT IS CONFIGURED WITH AN IFR CERTIFIED GTN-750 GPS COUPLED TO AN E2000 PFD/MFD AS THE PRIMARY FLIGHT INSTRUMENTATION DISPLAYS. THE PILOT WAS ALSO UTILIZING A STARTUS 2 WITH THE OPTIONAL OEM EXTERNAL GPS ANTENNA AND PROGRAMMED WITH THE CURRENT FIRMWARE 2
- [SDR 2011FA0000228](https://openairdocs.org/sdr/2011FA0000228.md): Spar · corroded · Apr 6, 2011 · N4592R · Piper PA28140 · Wing Spar
  > CORROSION LOCATED ON RT WING SPAR AFT SIDE, WS 59-61, AT FUEL TANK FLEXIBLE ACCESS.
- [SDR 2010FA0001125](https://openairdocs.org/sdr/2010FA0001125.md): Diode · broken · Oct 6, 2010 · N528CC · Amrgen AA5 · Flight Control System Wiring
  > MASTER SWITCH TURNED ON TO START ENGINE FOR FLT RESULTING IN VISIBLE SMOKE & ODOR IN CABIN. RETURNED TO HANGAR & FOUND IMPROPER RESPONSE & FUNCTION OF MASTER SWITCH. INVESTIGATION REVEALED THE MASTER CONTACTOR CONTROL WIRE FROM AIRFRAME GROUND POINT BEHIND I
- [SDR 2010FA0000195](https://openairdocs.org/sdr/2010FA0000195.md): Capacitor · leaking · Mar 2, 2010 · N8598Y · Piper PA30 · Navigation System
  > NAVIGATION RECEIVER BECAME INOPERATIVE AFTER THE BELOW LISTED COMPONENT LEAKED ELECTROLYTE ON TO THE PRINTED CIRCUIT BOARD.
- [SDR 2007FA0000989](https://openairdocs.org/sdr/2007FA0000989.md): Landing Gear · worn · Nov 6, 2007 · N22HW · Piper PA30 · Main Landing Gear Attach Section
  > PART (A) OF AD 77-13-21 REQUIRES INSPECTION OF LANDING GEAR EVERY 1000 HRS IAW SL 782. AIRCRAFT EXPERIENCED A COLLAPSED RT MLG FOLLOWING A SCENARIO THAT IS IDENTIFIED IN SL 782. THIS SCENARIO INCLUDES A POPPED LANDING GEAR MOTOR CIRCUIT BREAKER RESULTING IN
- [SDR 2006FA0000146](https://openairdocs.org/sdr/2006FA0000146.md): Skin · bent · Jan 19, 2006 · N7368Y · Piper PA30 · Horizontal Stabilizer, Plate/Skin
  > DURING INSP OF HORIZ STAB, FWD SPAR AND CTR SECTION SKIN WAS FOUND BENT, DISTORTED AT CENTER LIGHTENING HOLE. SKIN AND SPAR BOTH SHOWED SIGNS OF WRINKLING AND DEFORMATION. CLOSE INSP OF PARTS DID NOT SHOW ANY CRACKS. SPAR HAD BEEN REINFORCED WITH SPAR REINF
- [SDR 2005FA0001519](https://openairdocs.org/sdr/2005FA0001519.md): Commutator · destroyed · Nov 1, 2005 · N9918F · Cessna 172R · Engine Starter
  > A SEGMENT OF THE COMMUTATOR CAME OFF DURING STARTING, COMPLETELY DISTROYING THE BRUSES AND THE INSIDE OF THE STARTER. (K)
- [SDR 2005FA0001437](https://openairdocs.org/sdr/2005FA0001437.md): Stud · collapsed · Oct 17, 2005 · Cessna 172R · Nacelle/Pylon, Main Frame
  > THE STUD SPRINGS ARE COLLAPSING UPON INSTALLATION. SUSPECT POOR HEAT-TREATING OF THE SPRINGS. NOTICED EXCESSIVE CHAFFING (SMOKING) FROM THE ENGINE COWLING SINCE AIRCRAFTS WERE NEW. AT ABOUT 300TT THE RECEPTACLES FOR THE STUDS STARTED TO FAIL. WHEN NEW STUDS
- [SDR 2005FA0001260](https://openairdocs.org/sdr/2005FA0001260.md): B-Nut · loose · Aug 22, 2005 · N7546F · Bbavia 7KCAB · Reciprocating Engine Oil System
  > ENGINE OIL PRESSURE LINE B-NUT AT GEAR CASE LOST TORQUE AND THE ENGINE LOST ALL OIL. LACK OF LUBRICATION CAUSED FAILURE OF THE NR2 CONNECTING ROD BEARING. (K)
- [SDR 2005FA0000038](https://openairdocs.org/sdr/2005FA0000038.md): Bolt · improper part · Nov 2, 2004 · N76ML · Bbavia 7KCAB · Fasteners
  > DURING ANNUAL INSPECTION, IT WAS FOUND THAT ONE OF THE NAS BOLTS HOLDING THE IB END OF THE LANDING GEAR WAS TOO SHORT AND DID NOT GO ALL THE WAY THROUGH THE NAS NUT. THESE BOLTS WERE INSTALLED AT THE FACTORY, DURING A REPAIR IN 2001. FAILURE WOULD RESULT IN
- [SDR 2004FA0000614](https://openairdocs.org/sdr/2004FA0000614.md): Bolt · corroded · Mar 26, 2004 · N7192Y · Piper PA30 · Fasteners
  > DURING ANNUAL INSPECTION THE STABILATOR WAS REMOVED FOR FURTHER INSPECTION. THIS IS DUE TO PREVIOUS PROBLEMS ON OTHER PA24 AND PA30/39 AIRCRAFT WITH STABILATOR TORQUE TUBE AND ATTACHMENT BOLTS WITH EXCESSIVE CORROSION. BOTH BOLTS AN175C33A THAT ATTACHES THE
- [SDR 2004FA0000395](https://openairdocs.org/sdr/2004FA0000395.md): Servo · inoperative · Mar 18, 2004 · N974SP · Cessna 172S · Aircraft Fuel Distribution System
  > FUEL MIXTURE CONTROL ARM WILL NOT ROTATE TO (IDLE CUT-OFF) POSITION.
- [SDR 2004FA0000287](https://openairdocs.org/sdr/2004FA0000287.md): Control Wheel · cracked · Feb 19, 2004 · N752CF · Piper PA30 · Control Column Section
  > A CRACK WAS FOUND IN THE CO-PILOT CONTROL WHEEL WHEN IT WAS REMOVED. THE BOTTOM OF THE WHEEL FROM FRONT TO REAR THROUGH THE PIN HOLE. THIS CRACK IS NOT VISABLE FROM THE OUTSIDE.
- [SDR BAQA091185](https://openairdocs.org/sdr/BAQA091185.md): Blade · inoperative · Nov 18, 2003 · N117KY · Bolkms BK117C1 · Air Distribution Fan
  > FAN BLADES CAME OFF. REPLACED WITH SERVICEABLE UNIT.
- [SDR 2003FA0000965](https://openairdocs.org/sdr/2003FA0000965.md): Seat Frame · broken · Aug 23, 2003 · N8730V · Bbavia 7KCAB · Passenger Compartment Equipment
  > 2 SEAT BACK SUPPORT STRAPS BROKE ON HARD LANDING (G-METER REUD 9G) UPPER STRAP WAS A NEW BREAK AT WELD CENTER STRAP BROKE AT REPAIR WELD FROM PREVIOUS BREAK. CFI IN REAR SEAT SUSTAINED MINOR BACK INJURY, AIRCRAFT LT MAIN GEAR COLLAPSED RESULTING IN PROP STRIK
- [SDR 2004FA0000613](https://openairdocs.org/sdr/2004FA0000613.md): Bolt · corroded · Jun 30, 2003 · N8458Y · Piper PA30 · Fasteners
  > DURING ANNUAL INSPECTION THE STABILATOR WAS REMOVED FOR FURTHER INSPECTION. THIS IS DUE TO PREVIOUS PROBLEMS ON THE PA24 AND PA30/39 AIRCRAFT WITH STABILATOR TORQUE TUBE AND ATTACHMENT BOLTS WITH EXCESSIVE CORROSION. BOTH BOLTS AN175C33A THAT ATTACHES THE ST
- [SDR 2004FA0000616](https://openairdocs.org/sdr/2004FA0000616.md): Bolt · corroded · Jun 30, 2003 · N7321Y · Piper PA30 · Fasteners
  > DURING ANNUAL INSPECTION THE STABILATOR WAS REMOVED FOR FURTHER INSPECTION. THIS IS DUE TO PREVIOUS PROBLEMS ON OTHER PA24 AND PA30/39 AIRCRAFT WITH STABILATOR TORQUE TUBE AND ATTACHMENT BOLTS WITH EXCESSIVE CORROSION. BOTH BOLTS AN175C33A THAT ATTACHES THE
- [SDR 2003FA0000523](https://openairdocs.org/sdr/2003FA0000523.md): Cylinder Head · cracked · May 21, 2003 · N64551 · Cessna 172P · Reciprocating Engine Cylinder Section
  > CYLINDER HEAD FOUND CRACKED FROM UPPER TO LOWER SPARK PLUG HOLES. BEING FOWARDED FOR MECHANIC AS FAX NUMBER DOES NOT WORK AT AFS-640. POC J. SHAPIRO 201-556-6600 EXT 230.
- [SDR 2004FA0000611](https://openairdocs.org/sdr/2004FA0000611.md): Bolt · corroded · Jan 17, 2003 · N8560Y · Piper PA30 · Fasteners
  > DURING ANNUAL INSPECTION THE STABILATOR WAS REMOVED FOR FURTHER INSPECTION. THIS IS DUE TO PREVIOUS PROBLEMS ON OTHER PA24 AND PA30/39 AIRCRAFT WITH STABILATOR TORQUE TUBE AND ATTACHMENT BOLTS WITH EXCESSIVE CORROSION. BOTH BOLTS AN175C33A THAT ATTACHES THE
- [SDR 2004FA0000624](https://openairdocs.org/sdr/2004FA0000624.md): Bolt · corroded · Jan 17, 2003 · N8560Y · Piper PA30 · Fasteners
  > DURING ANNUAL INSPECTION THE STABILATOR WAS REMOVED FOR FURTHER INSPECTION. THIS IS DUE TO PREVIOUS PROBLEMS ON OTHER PA24 AND PA30/39 AIRCRAFT WITH STABILATOR TORQUE TUBE AND ATTACHMENT BOLTS WITH EXCESSIVE CORROSION. BOTH BOLTS AN175C33A THAT ATTACHES THE
- [SDR 2004FA0000609](https://openairdocs.org/sdr/2004FA0000609.md): Bolt · corroded · Nov 15, 2002 · N8943Y · Piper PA39 · Fasteners
  > DURING ANNUAL INSPECTION THE STABILATOR WAS REMOVED FOR FURTHER INSPECTION. THIS IS DUE TO PREVIOUS PROBLEMS ON OTHER PA24 AND PA 30/39 AIRCRAFT WITH STABILATOR TORQUE TUBE AND ATTACHMENT BOLTS WITH EXCESSIVE CORROSION. BOTH BOLTS AN175C33A THAT ATTACHES THE
- [SDR 2004FA0000615](https://openairdocs.org/sdr/2004FA0000615.md): Bolt · corroded · Sep 19, 2002 · N7672Y · Piper PA30 · Fasteners
  > DURING ANNUAL INSPECTION THE STABILATOR WAS REMOVED FOR FURTHER INSPECTION. THIS IS DUE TO PREVIOUS PROBLEMS ON OTHER PA24 AND PA30/39 AIRCRAFT WITH STABILATOR TORQUE TUBE AND ATTACHMENT BOLTS WITH EXCESSIVE CORROSION. BOTH BOLTS AN175C33A THAT ATTACHES THE
- [SDR 2002FA0001093](https://openairdocs.org/sdr/2002FA0001093.md): Points · burned · Jul 1, 2002 · N814RC · Piper PA30 · Magneto/Distributor
  > DURING ENGINE RUN AND MAGNETO CHECK, MAGNETO WOULD RUN. FOUND POINTS BURNED, PITTED AND WORN. TOTAL HOURS ON ITEM: 195.0, REPLACED BREAKER POINTS. (SW15200210915)
- [SDR 2002FA0001094](https://openairdocs.org/sdr/2002FA0001094.md): Bolt · corroded · Jul 1, 2002 · N8030Y · Piper PA30 · Fasteners
  > DURING ANNUAL INSPECTION STABILATOR WAS REMOVED FOR FURTHER INSPECTION. THIS IS DUE TO PREVIOUS PROBLEMS ON OTHER PA24 AND PA30 AIRCRAFT WITH STABILATOR TORQUE TUB AND ATTACHMENT BOLTS WITH EXCESSIVE CORROSION. BOTH BOLTS (PN AN175C33A) THAT ATTACHES THE STA
- [SDR 2002FA0001095](https://openairdocs.org/sdr/2002FA0001095.md): Bolt · corroded · Jul 1, 2002 · N814RC · Piper PA30 · Fasteners
  > DURING ANNUAL INSPECTION STABILATOR WAS REMOVED FOR FURTHER INSPECTION. THIS IS DUE TO PREVIOUS PROBLEMS ON OTHER PA24 AND PA30 AIRCRAFT WITH STABILATOR TORQUE TUBE AND ATTACHMENT BOLTS WITH EXCESSIVE CORROSION. BOTH BOLTS (PN AN175C33A) THAT ATTACHES THE ST
- [SDR 2002FA0001096](https://openairdocs.org/sdr/2002FA0001096.md): Bolt · corroded · Mar 25, 2002 · N7008Y · Piper PA30 · Fasteners
  > DURING ANNUAL INSPECTION STABILATOR WAS REMOVED FOR FURTHER INSPECTION. THIS IS DUE TO PREVIOUS PROBLEMS ON OTHER PA24 AND PA30 AIRCRAFT WITH STABILATOR TORQUE TUBE AND ATTACHMENT BOLTS WITH EXCESSIVE CORROSION. BOTH BOLTS (PN AN175C33A) THAT ATTACHES THE ST
- [SDR 2002FA0000235](https://openairdocs.org/sdr/2002FA0000235.md): Spar · cracked · Sep 25, 2001 · N8615V · Bbavia 7KCAB · Wing Spar
  > WING MAIN SPAR, TOP OF SPAR OUTBOARD OF STRUT FITTING.
- [SDR 2001FA0000225](https://openairdocs.org/sdr/2001FA0000225.md): Bulkhead · cracked · Jul 17, 2001 · N430CP · Cessna 172S · Propeller Spinner Section
  > UPON A POSTFLIGHT INSPECTION, THE PROPELLER SPINNER BULKHEAD AND SPINNER ASSEMBLY WERE DISCOVERED CRACKED. THE CORNER PORTION OF THE BULKHEAD WAS COMPLETELY RIPPED AWAY AND THE EDGE OF THE SPINNER WAS PEELING UP AND TORN. PROBABLE CAUSE: MANUFACTURING DEFECT
- [SDR 2002FA0000245](https://openairdocs.org/sdr/2002FA0000245.md): Spar · cracked · Jun 30, 2001 · N8643 · Bbavia 7KCAB · Wing Spar
  > AIRFRAME TOTAL TIME 3161 DURING THE ANNUAL INSPECTION AND WHILE COMPLYING WITH AD INSTRUCTIONS. IT WAS DISCOVERED THAT THE RIGHT WING REAR SPAR HAD AN 8 INCHES LONG LONGITUDINAL CRACK AT THE REAR STRUT ATTACH POINT. ITS SUSPECTED THAT THE AIRFRAME HIGH TIME
- [SDR 2001FA0000123](https://openairdocs.org/sdr/2001FA0000123.md): Spar · cracked · Jun 29, 2001 · N86960 · Bbavia 7KCAB · Wing Spar
  > DURING INSPECTION OF RIGHT WING, A CRACK WAS FOUND ON THE AFT SIDE OF THE FORWARD WOOD SPAR, 79 INCHES OUTBOARD FROM THE BUTT RIB. THE 5 INCH LONG, HORIZONTAL CRACK WAS LOCATED AT THE COMPRESSION MEMBER AND RAN THROUGH THE HOLES FOR THE DRAG WIRES. UNDETERMI
- [SDR 2001FA0000112](https://openairdocs.org/sdr/2001FA0000112.md): Bolt · broken · Jun 27, 2001 · N7993Y · Piper PA30 · Main Landing Gear
  > THE AN3-10A BOLT, HOLDING THE MAIN GEAR SPRING ATTACH BRACKET ON TO THE STRUT HOUSING, BROKE. IT CAUSED THE BRACKET TO JAM AGAINST THE GEAR FORWARD ATTACH FITTING AND WOULD NOT LET THE GEAR GO DOWN. AIRCRAFT LANDED WITH THE GEAR UNSAFE.
- [SDR 2002FA0000250](https://openairdocs.org/sdr/2002FA0000250.md): Spar · cracked · Jan 25, 2001 · N6369N · Bbavia 7KCAB · Wing Spar
  > WOODEN SPARS, NAILS OUT OF LEADING EDGE RIBS, WOODEN SPACERS WERE LEFT OUT OF FIRST FOUR INBOARD LEADING EDGE RIBS. LEADING EDGE LOOSE, NAILS LOOSE. HAD BEEN PATCHED BEFORE, HAD PUT SCREWS INSTEAD OF NAILS ON LEADING EDGE SPARS AND RIBS. SOME RIBS CRACKED,
- [SDR 20010222CW006](https://openairdocs.org/sdr/20010222CW006.md): Tube · broken · Jan 10, 2001 · N3891P · Amtr VANSRV6 · Trailing Edge Flap Control System
  > FLAP ROD BROKE JUST BELOW UPPER BALL JOINT CAUSING FLAP TO RETRACT ON LANDING. THIS PART IS.3125 X.058 6061 T6 ALUMINUM TUBING AND APPEARS TO BE WEAK AFTER THREADS ARE CUT IN ENDS.
- [SDR AU000237](https://openairdocs.org/sdr/AU000237.md): Pipe · leaking · Apr 2, 2000 · Piper PA30 · Fuel Indicating System
  > (AUS) RIGHT FUEL FLOW LINE LOCATED AT BACK OF INSTRUMENT INADEQUATELY FLARED. FUEL LEAKING.

## 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 = 'IO320'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/engine/superior-io-320-series/reports

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