# Service difficulty reports: Continental IO-520-F

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

Newest first. General aviation reporting is voluntary.

Page 1 of 16 · 751 reports

- [SDR UATA202609092701](https://openairdocs.org/sdr/UATA202609092701.md): Control Cable · misinstalled · Aug 24, 2026 · N26TA · Cessna 207 · Elevator Tab Control System
  > A POST MAINT FLIGHT CHECK OF ACFT WAS CONDUCTED DUE TO AN ENG CHANGE, PROPELLER CHANGE, MULTIPLE FLT CONTROL SURFACE, CONTROL SURFACE CABLE CHANGES, & AN EXTENDED PERIOD OF DOWN TIME IN MAINT (APPROX. 6YRS.) DUE TO EXTREME CORROSION & OTHER MX ITEMS. AFTER TAK
- [SDR ENHA202606010001](https://openairdocs.org/sdr/ENHA202606010001.md): Wire · broken · May 28, 2026 · N207YH · Cessna 207A · Electrical Power System Wiring
  > AFTER TAKE-OFF, PILOT SMELLED SMOKE AND LOOKED AT GAGES AND ENGINE OIL TEMP SHOWED "0". PILOT TURNED AROUND AND LANDED. MECHANICS FOUND A LOOSE WIRE ON MAIN BUSS, BROKEN 10 AMP CIRCUIT BREAKER AND BROKEN WIRE AT VOLTAGE REGULATOR. MECHANICS TIGHTENED LOOSE WIR
- [SDR ENHA20250522001](https://openairdocs.org/sdr/ENHA20250522001.md): Muffler · leaking · May 21, 2025 · N207YH · Cessna 207A · Engine Exhaust System
  > PILOT REPORTED CO DETECTOR INDICATING. MECHANICS FOUND THE RIGHT HAND MUFFLER COUPLING LEAKING. MECHANICS REPLACED THE ATTACHING HARDWARE.
- [SDR UATA2025012301](https://openairdocs.org/sdr/UATA2025012301.md): Bulkhead · cracked · Jan 23, 2025 · N9829M · Cessna 207A · Fuselage Main, Bulkhead
  > CRACK IN FORWARD BULKHEAD OF HORIZONTAL STABILIZER, RIGHT HAND SIDE NEAR UPPER LIGHTNING HOLE. "REPLACED BULKHEAD WITH NEW BULKHEAD 1212136-14. SEE 337 DATED 1/23/25 FOR FURTHER DETAIL."
- [SDR 2025FA0000063](https://openairdocs.org/sdr/2025FA0000063.md): Muffler · cracked · Jan 18, 2025 · N7373U · Cessna 207A · Engine Collector/Tailpipe/Nozzle
  > YUTE COMMUTER SERVICE AIRCRAFT N7373U HAD AN UNSCHEDULED LANDING ON 1/18/25. PILOT REPORTED LOSS OF POWER IN FLIGHT AND AN ABNORMAL NOISE COMING FROM THE ENGINE CAUSING HIM TO DIVERT FROM HIS ORIGINAL DESTINATION. MECHANICS SENT OUT TO RETRIEVE AIRCRAFT FOUN
- [SDR 2024FA0000071](https://openairdocs.org/sdr/2024FA0000071.md): Magneto · failed insp · Jan 24, 2024 · N9861Z · Cessna U206G · Magneto/Distributor
  > FOUND FACTORY DEFECT WHILE PERFORMING FIRST 500-HOUR INSPECTION MAGNETO WITH TT 477.6 IN ACCORDANCE WITH SERVICE SUPPORT MANUAL X42001. COIL TAB HAD NOT BEEN INSTALLED PARALLEL WITH HOUSING TO COVER MATING SURFACE, AS SPECIFIED IN 6-2.4 5.C. THIS HAD RESULTE
- [SDR 2021FA0000041](https://openairdocs.org/sdr/2021FA0000041.md): Pin · worn · Feb 11, 2021 · N99439 · Cessna 207A · Engine (Reciprocating)
  > ENGINE WOULD NOT STOP THROWING ALTERNATOR BELTS. FOUND REAR COUNTERWEIGHT PIN AND CHEEK BUSHINGS AS WELL AS COUNTERWEIGHT BUSHINGS EXTREMELY WORN OUR OF SERVICE LIMITS.
- [SDR EVGR20200624](https://openairdocs.org/sdr/EVGR20200624.md): Tube · split · Jan 28, 2021 · N6153Z · Cessna U206G · Tire Tube
  > PILOT WAS TAXIING AIRCRAFT WHEN ANOTHER PERSON ON THE RAMP GRABBED HIS ATTENTION REGARDING THE LH MAIN TIRE BEING FLAT. HE STOPPED AND SHUT DOWN. WHEEL WAS REMOVED AND DISASSEMBLED. TIRE INNER TUBE WAS REPLACED AND WHEEL REINSTALLED. EXAMINATION OF THE INN
- [SDR ENHAN9728M](https://openairdocs.org/sdr/ENHAN9728M.md): Latch · worn · Aug 20, 2020 · N9728M · Cessna 207A · Doors
  > AT 1421 I WAS CLEARED TO TAKE OFF ON 1LAT GOLF. DURING THE TAKE OFF ROLL, THE NOSE DOOR CAME OPEN. I ABORTED THE TAKE OFF AND REQUESTED CLEARANCE TO TAXI BACK TO BASE. TOWER CLEARED ME TO TAXI ON ALPHA CHARLIE TO PARK. THEN TOWER ASKED WHY I ABORTED AND I
- [SDR ENHA202008210001](https://openairdocs.org/sdr/ENHA202008210001.md): Latch · sheared · Aug 20, 2020 · N9946M · Cessna 207A · Cargo/Baggage Doors
  > DURING FLIGHT, 6.5 MILES FROM PAKN TO THE SOUTH, I EXPERIENCED TURBULENCE. THE REAR CARGO DOOR LATCHING MECHANISM(ROD THAT CONNECTS THE TWO LATCHES) SHEARED IN FLIGHT. THE REAR DOOR OPENED. TOWER CLEARED ME TO LAND AND I PROCEEDED TO LAND ON 30 NORMALLY. T
- [SDR ENHA202008210002](https://openairdocs.org/sdr/ENHA202008210002.md): Latch · sheared · Aug 20, 2020 · N9946M · Cessna 207A · Cargo/Baggage Doors
  > DURING FLIGHT, 6.5 MILES FROM PAKN TO THE SOUTH, I EXPERIENCED TURBULENCE. THE REAR CARGO DOOR LATCHING MECHANISM(ROD THAT CONNECTS THE TWO LATCHES) SHEARED IN FLIGHT. THE REAR DOOR OPENED. TOWER CLEARED ME TO LAND AND I PROCEEDED TO LAND ON 30 NORMALLY. T
- [SDR 2020FA0000338](https://openairdocs.org/sdr/2020FA0000338.md): Alternator · burned · Jul 16, 2020 · N9651M · Cessna 207A · DC Generator-Alternator
  > LOW VOLTAGE LIGHT ILLUMINATED. 30 SECONDS LATER A STRONG ELECTRICAL BURNING SMELL CAME FROM BEHIND THE PANEL FOLLOWED BY A VERY SMALL AMOUNT OF SMOKE. RAN ELECTRICAL FIRE IN FLIGHT CHECKLIST AND LANDED 10 MINUTES LATER IN CHEFORNAK AND CALLED MX CONTROL TO REP
- [SDR 2020FA0000080](https://openairdocs.org/sdr/2020FA0000080.md): Lifter · spalled · Jan 22, 2020 · N710MH · Cessna U206F · Reciprocating Engine Power Section
  > PILOT REPORTED LOW OIL PRESSURE AT IDLE, REMOVED OIL PRESSURE REGULATOR AND FOUND SHARP METAL CHIP IN BOTTOM OF REGULATOR WHERE IT HAD ARRIVED AFTER FALLING OUT OF REGULATOR SEAT. PREVIOUS EXPERIENCE LED US TO BELIEVE THAT THE METAL WAS FROM A LIFTER, WE INSP
- [SDR ENHA20190926001](https://openairdocs.org/sdr/ENHA20190926001.md): Door · not closed · Sep 26, 2019 · N48CF · Cessna 207 · Cargo/Baggage Doors
  > PILOT REPORTED "DEPARTING FROM BETHEL, BACK DOOR OPENED DURING TAKEOFF ROLL. ABORTED TAKEOFF AND TAXIED BACK TO BASE." MX INSPECTED AND COULD NOT DUPLICATE.
- [SDR 2019FA0000211](https://openairdocs.org/sdr/2019FA0000211.md): Alternator · failed · Jul 6, 2019 · N206US · Cessna 206CESSNA · DC Generator-Alternator
  > WHILE IN FLIGHT THE SMELL OF BURNING ELECTRONICS WAS APPARENT IN THE CABIN. ALTERNATOR WAS TURNED OFF. ALL UNNECESSARY ELECTRONIC CIRCUITS WERE SHUT OFF USING THE ASSOCIATED CIRCUIT BREAKERS. THE FLIGHT WAS CONTINUED TO TOWARDS ITS DESTINATION WHICH WAS ABOUT
- [SDR 2019F00210](https://openairdocs.org/sdr/2019F00210.md): Engine · making metal · Jun 4, 2019 · N9946M · Engine (Reciprocating)
  > EXPERIENCED POWER SURGES IN FLIGHT. FOLLOWED BY RPM DECLINE AND ENGINE FAILURE. UPON INSPECTION BY MECHANIC FOUND METAL IN OIL FILTER.
- [SDR ENHA2019F00207](https://openairdocs.org/sdr/ENHA2019F00207.md): Unknown · smoke · May 16, 2019 · N9728M · Cessna 207 · Air Distribution System
  > POP HEARD ON CLIMB OUT, FOLLOWED BY ELECTRICAL SMELL AND SMOKE IN CABIN.
- [SDR ENHA2019FA0000154](https://openairdocs.org/sdr/ENHA2019FA0000154.md): Unknown · smoke · May 16, 2019 · N9728M · Cessna 207 · Air Distribution System
  > HEARD A POP ON TAKEOFF AND NOTICED STRONG ELECTRICAL SMELL AND SMOKE.
- [SDR EVGR201908070001](https://openairdocs.org/sdr/EVGR201908070001.md): Pump · leaking · May 6, 2019 · N67JA · Cessna U206G · Engine Fuel Pump
  > DURING A FUEL INJECTION SYSTEM CHECK WITH PRESSURE GAUGES IT WAS NOTED THAT FUEL WAS LEAKING FROM A VENT ON THE BACK SIDE OF THE ENGINE DRIVEN FUEL PUMP JUST BELOW THE LOW PRESSURE RELIEF VALVE ADJUSTMENT SCREW (THIS ADJUSTS THE LOW UNMETERED FUEL PRESSURE). T
- [SDR EPUA2019022019001](https://openairdocs.org/sdr/EPUA2019022019001.md): Ignition Lead · unknown · Feb 19, 2019 · N9869M · Cessna 207A · Ignition Power Supply
  > DURING FLIGHT PILOT INDICATED ENGINE ROUGHNESS AND VIBRATION. MAINTENANCE REPLACED LEFT HAND IGNITION HARNESS AND R/H MUFFLER.
- [SDR ENHA618D](https://openairdocs.org/sdr/ENHA618D.md): Alternator · seized · Feb 18, 2019 · N207VA · Cessna 207 · DC Generator-Alternator
  > ALTERNATOR FAILURE IN FLIGHT, PILOT MADE A PRECAUTIONARY LANDING AT PRIVATE AIRSTRIP DUE TO A BURNING SMELL IN THE CABIN. UPON INSPECTION MAINTENANCE, PERSONNEL FOUND THE ALTERNATOR HAD SEIZED, AND THE BURNING SMELL WAS FROM THE BELT SLIPPING ON THE SEIZED PUL
- [SDR CA180907015](https://openairdocs.org/sdr/CA180907015.md): Alternator · failed · Sep 7, 2018 · Cessna U206F · AC Generator-Alternator
  > (CAN) FAILED DURING FLIGHT, BATTERY RUN DOWN AS A RESULT. (TC# 20180907015)
- [SDR EPUA2018030316001](https://openairdocs.org/sdr/EPUA2018030316001.md): Bushing · worn · Mar 16, 2018 · N7389U · Cessna 207A · Reciprocating Engine Power Section
  > THE AIRCRAFT ENGINE HAD FREQUENT PROBLEMS WITH THE ALTERNATOR BELT COMING OFF. MAINTENANCE INSPECT THE COUNTERWEIGHT ATTACH BUSHING FOR DEFECTS. ON INSPECTION IAW SERVICE BULLETIN MSB 99-3C, IT WAS DETERMINED THAT WEAR TO BUSHING WAS FOUND TO BE.004" FROM O
- [SDR EPUA20180302001](https://openairdocs.org/sdr/EPUA20180302001.md): Bushing · worn · Mar 2, 2018 · N7384U · Cessna 207A · Reciprocating Engine Power Section
  > THE ENGINE HAD EXPERIENCE FREQUENT ALTERNATOR BELT THROWING PROBLEMS. NO FIX WAS FOUND. THE DECISION WAS MADE TO HAVE THE ENGINE INSPECTED FOR DEFECTS. FOUND EXCESSIVELY WORN CRANKSHAFT COUNTERWEIGHT BUSHINGS. THIS IS BELIEVED TO BE THE REASON THE ALTERNAT
- [SDR 2017FA0000512](https://openairdocs.org/sdr/2017FA0000512.md): Intake Valve · chipped · Oct 13, 2017 · N123TM · Cessna U206F · Reciprocating Engine Cylinder Section
  > LOW COMPRESSION DURING A 100 HOUR INSPECTION, IN ONE CYLINDER (20/80) WAS OBSERVED. BORESCOPE INSPECTION SHOWED AN INTAKE VALVE THAT HAD LOST PART OF THE LIP THAT SEALS AGAINST THE VALVE SEAT.
- [SDR 2017FA0000506](https://openairdocs.org/sdr/2017FA0000506.md): Rocker · brinelled · Oct 3, 2017 · N123TM · Cessna U206F · Reciprocating Engine Cylinder Section
  > DURING AN ENGINE REPAIR, ONE ROCKER ARM WAS FOUND TO HAVE SEVERELY WORN AREA WHERE THE ROCKER ARM PUSHES ON THE VALVE STEM.
- [SDR 2017FA0000345](https://openairdocs.org/sdr/2017FA0000345.md): Valve Spring · corroded · Aug 4, 2017 · Cessna U206G · Reciprocating Engine Cylinder Section
  > PILOT REPORTED LOSS OF POWER AND LOWERED TEMP READINGS FROM CYLINDER 2 IN FLIGHT. SHORTLY AFTER THAT ON APPROACH, HE LOST NR 4 TEMP READINGS AND MORE POWER LOSS. TROUBLESHOOTING REVEALED BROKEN INTAKE AND EXHAUST VALVE INNER SPRINGS ON NR 2 CYLINDER, BROKEN
- [SDR EPUA20170725001](https://openairdocs.org/sdr/EPUA20170725001.md): Door Sill · cracked · Jul 16, 2017 · N17GN · Cessna 207A · Fuselage Miscellaneous Structure
  > DURING A PHASE INSPECTION, THE COPILOT LOWER OUTER DOOR SILL WAS FOUND CRACKED. REPLACED WITH A NEW.
- [SDR 2017FA0000334](https://openairdocs.org/sdr/2017FA0000334.md): Lifter · spalled · May 12, 2017 · N9861Z · Cessna U206G · Reciprocating Engine Cylinder Section
  > THE ENGINE IS A FACTORY ENGINE WITH ONLY 192.7 HOURS TT. OUR ACFT FLY ROUGHLY 400 HOURS A YEAR. WE HAVE CHANGED OUR OIL TYPE SINCE THE LAST ENGINE CHANGE TO 20W50, AND BEGAN USING ADDITIVE TO PREVENT THIS DEFECT. WE HAVE REPLACED SPALLED AND DEFECTIVE LIFTE
- [SDR 2017FA0000337](https://openairdocs.org/sdr/2017FA0000337.md): Lifter · spalled · May 12, 2017 · N9861Z · Cessna U206G · Reciprocating Engine Cylinder Section
  > THIS ENGINE IS A FACTORY ENGINE WITH ONLY 192.7 HOURS TT. OUR ACFT FLY ROUGHLY 400 HOURS A YEAR. WE HAVE CHANGED OUR OIL TYPE SINCE THE LAST ENGINE CHANGE TO 20W50 AND BEGAN USING ADDITIVE TO PREVENT THIS DEFECT. WE HAVE REPLACED SPALLED AND DEFECTIVE LIFTE
- [SDR 2017FA0000365](https://openairdocs.org/sdr/2017FA0000365.md): Lifter · spalled · May 12, 2017 · N9861Z · Cessna U206G · Reciprocating Engine Cylinder Section
  > LIFTERS WITH SEVERE SPALLING AND ONE CAM LOBE THAT WAS WORN OUT OF TOLERANCE DUE TO A VERY BAD LIFTER. THIS LIFTER IS FACTORY AND IS DEFECTIVE AT 192.7 HRS.
- [SDR 2017FA0000366](https://openairdocs.org/sdr/2017FA0000366.md): Lifter · spalled · May 12, 2017 · N9861Z · Cessna U206G · Reciprocating Engine Cylinder Section
  > LIFTERS FOUND WITH SEVERE SPALLING AND ONE CAM LOBE THAT WAS WORN OUT OF TOLERANCE DUE TO A VERY BAD LIFTER. THIS LIFTER IS FACTORY AND IS DEFECTIVE AT 192.7 HRS.
- [SDR 2017FA0000369](https://openairdocs.org/sdr/2017FA0000369.md): Lifter · spalled · May 12, 2017 · N9861Z · Cessna U206G · Reciprocating Engine Cylinder Section
  > LIFTERS FOUND WITH SEVERE SPALLING AND ONE CAM LOBE THAT WAS WORN OUT OF TOLERANCE DUE TO A VERY BAD LIFTER. THIS LIFTERS IS FACTORY AND IS DEFECTIVE AT 192.7 HRS.
- [SDR 2017FA0000370](https://openairdocs.org/sdr/2017FA0000370.md): Lifter · spalled · May 12, 2017 · N9861Z · Cessna U206G · Reciprocating Engine Cylinder Section
  > LIFTERS WITH SEVERE SPALLING AND ONE CAM LOBE THAT WAS WORN OUT OF TOLERANCE DUE TO A VERY BAD LIFTER. THIS LIFTER IS FACTORY AND IS DEFECTIVE AT 192.7 HRS.
- [SDR 2017FA0000375](https://openairdocs.org/sdr/2017FA0000375.md): Lifter · spalled · May 12, 2017 · N9861Z · Cessna U206G · Reciprocating Engine Cylinder Section
  > THIS ENG IS A FACTORY ENG WITH ONLY 192.7 HRS TT. OUR ACFT FLY ROUGHLY 400 HRS A YEAR. WE HAVE CHANGED OUR OIL TYPE SINCE THE LAST ENG CHANGE TO EXON ELITE 20W50 AND BEGAN USING CAMGAURD ADDITIVE TO PREVENT THIS DEFECT. MOODY AVIATION IN SPOKANE WA FLIES TW
- [SDR 2017FA0000352](https://openairdocs.org/sdr/2017FA0000352.md): Connecting Rod · departed · Apr 27, 2017 · N5161U · Cessna 206CESSNA · Reciprocating Engine Cylinder Section
  > THREW A CONNECTING ROD FROM EITHER NR 3 OR NR 4 CYLINDER THROUGH THE TOP OF THE CRANKCASE. DID NOT DISASSEMBLE ENGINE. SENT BACK TO MANUFACTURER.
- [SDR 2016FA0000464](https://openairdocs.org/sdr/2016FA0000464.md): Engine · damaged · Sep 28, 2016 · N207VA · Cessna 207 · Engine (Reciprocating)
  > APPROX 2 MIN AFTER TAKEOFF FROM PAKN I NOTICED SMOKE IN THE COCKPIT AND BEGAN TO HEAD BACK THE AIRPORT. APPROX 30 SEC AFTER THE FIRST INDICATION OF SMOKE I HAD APPROXIMATELY A 50% REDUCTION IN POWER AND THE ENGINE BEGAN RUNNING ROUGH. BEFORE LANDING I WAS AT
- [SDR 2016FA0000321](https://openairdocs.org/sdr/2016FA0000321.md): Elt · failed · Jul 6, 2016 · N91170 · Cessna 207 · Emergency Locator Beacon
  > ELT DID NOT ACTIVATE AFTER THE AIRCRAFT IMPACTED THE SIDE OF A MOUNTAIN. ELT DID NOT APPEAR TO BE DAMAGED IN THE ACCIDENT.
- [SDR EPUA20160521001](https://openairdocs.org/sdr/EPUA20160521001.md): Muffler · contaminated · May 21, 2016 · N9948M · Cessna 207A · Engine Noise Suppressor
  > DURING TAKEOFF, PILOT REPORTS OF BURNING PLASTIC SMELL. INSPECTED ACFT & FOUND MELTED PLASTIC ON LT MUFFLER. IT IS BELIEVED THAT THE PLASTIC WAS FROM A TIE WRAP. REMOVED PLASTIC FROM MUFFLER. SUCCESSFUL OPERATIONAL CHECK FLIGHT OF ACFT WAS PERFORMED WITH N
- [SDR CA160321008](https://openairdocs.org/sdr/CA160321008.md): Cylinder · making metal · Mar 14, 2016 · Cessna U206G · Reciprocating Engine Cylinder Section
  > (CAN) ENGINE RECEIVED FOR INSPECTION DUE TO METAL CONTAMINATION. IT WAS IDENTIFIED BY THE ENGINEER DURING INSPECTION OF THE ENGINE OIL SCREEN. IT WAS ALSO NOTED THAT THE NR 5 LOWER SPARK PLUG ELECTRODES WERE COVERED IN A NON-FERROUS METAL. AS A RESULT, CYLINDE
- [SDR CA160319001](https://openairdocs.org/sdr/CA160319001.md): Cylinder · failed · Mar 13, 2016 · Reciprocating Engine Cylinder Section
  > (CAN) ENGINE STARTED RUNNING ROUGH JUST AFTER TAKEOFF, PILOT RETURNED TO AIRPORT. MAINTENANCE INSPECTED ENGINE AND FOUND ZERO COMPRESSION ON NR 5 CYLINDER AND METAL CONTAMINATION IN OIL FILTER. ENGINE WAS REMOVED AND SENT TO ENGINE SHOP FOR FURTHER INVESTIGAT
- [SDR P9KA2015120804](https://openairdocs.org/sdr/P9KA2015120804.md): Breaker Points · inoperative · Dec 6, 2015 · N93021 · Cessna 207A · Magneto/Distributor
  > PILOT REPORTED ENG DIED WHEN IGNITION SWITCH MOVED TO LT POSITION. TROUBLESHOOTING REVEALED LT MAGNETO INOPERATIVE. REPLACED LT MAGNETO WITH SERVICEABLE, ALL CHECKED SATISFACTORY. PRELIMINARY INSPECTION SHOWED LT MAGNETO POINTS NOT OPENING, POSSIBLY DUE TO
- [SDR YAAA20151118001](https://openairdocs.org/sdr/YAAA20151118001.md): Shaft · sheared · Nov 18, 2015 · N7380U · Cessna 207A · Vacuum Distribution System
  > PILOT REPORTS SUCTION READING NIL. REMOVED VACUUM PUMP & SHAFT WAS SHEARED.
- [SDR HXXC2016F00015](https://openairdocs.org/sdr/HXXC2016F00015.md): Tube · failed · Oct 20, 2015 · N996AK · Cessna U206E · Tire Tube
  > UPON LANDING, LEFT MAIN TUBE WENT FLAT.
- [SDR YAAA2015100520](https://openairdocs.org/sdr/YAAA2015100520.md): Switch · faulty · Oct 5, 2015 · N207JP · Cessna 207 · Pitot/Static Anti-Ice System
  > PILOT REPORTED SMOKE COMING FROM UNDER DASH ON LANDING WHEN TURNING ON PITOT HEAT. FOUND PITOT HEAT SWITCH MELTED UNDER DASH.
- [SDR 2015FA0000358](https://openairdocs.org/sdr/2015FA0000358.md): Crankshaft · broken · Jul 31, 2015 · N315EC · Cessna 2105A · Reciprocating Engine Power Section
  > AIRCRAFT ON CLIMBOUT THROUGH 4000' EXPERIENCED SUDDEN LOSS OF POWER AND MADE A FORCED LANDING TO A HIGHWAY. INSPECTION REVEALED CRANKSHAFT BROKEN IN VICINITY OF MAIN BEARING JOURNAL JUST FORWARD OF CYLINDERS NR 1 & 2. METAL CONTAMINATION NOTED IN THE OIL SC
- [SDR EPUA073115001](https://openairdocs.org/sdr/EPUA073115001.md): Engine · power loss · Jul 31, 2015 · N9996M · Cessna 207A · Engine (Reciprocating)
  > DURING A SCHEDULED FLIGHT, PILOT NOTICED ENG WAS NOT MAKING FULL POWER, PILOT RETURNED TO BASE & LANDED WITHOUT INCIDENT. REPLACED ENG ASSEMBLY DUE TO ITS TIME IN SERVICE & PREVIOUS OPERATIONAL HISTORY.
- [SDR CA150716007](https://openairdocs.org/sdr/CA150716007.md): Fastener · detached · Jul 13, 2015 · Cessna U206E · Fuel Storage
  > (CAN) FOUND LT WING FUEL BLADDER INBD MIDDLE AND INBD REAR CLIPS HAD FALLEN OFF, CAUSING THE FUEL BLADDER TO DROOP AND PUT PRESSURE ON THE FUEL LEVEL TRANSMITTER FLOAT AND CAUSE A LOWER FUEL LEVEL INDICATION. CLIPS WERE REINSTALLED AND A FUEL LEVEL INDICATION
- [SDR CA150706013](https://openairdocs.org/sdr/CA150706013.md): Engine · power loss · Jul 1, 2015 · Cessna U206E · Engine (Reciprocating)
  > (CAN) IN CRUISE FLIGHT THE ENGINE BEGAN RUNNING VERY ROUGHLY. PILOT RETURNED TO BASE FOR MAINTENANCE. SPARK PLUGS REMOVED, INSPECTED, AND TESTED, NO FAULTS FOUND. SPARK PLUGS CLEANED AND REINSTALLED. MAG TIMING CHECKED AND FOUND TO BE OUT +4 DEG, MAGNETO TIMIN
- [SDR CA150704002](https://openairdocs.org/sdr/CA150704002.md): Alternator · failed · Jun 26, 2015 · Cessna U206E · AC Generator-Alternator
  > (CAN) ON RUN UP PILOT DISCOVERED THE ALTERNATOR WAS NOT CHARGING. REMOVED ALTERNATOR PN DOFF10300JR, 123.9 TSOH. INSTALLED SERVICEABLE ALTERNATOR PN DOFF10300JR. RUN UP CARRIED OUT ALTERNATOR FUNCTION CHECKED OK.

Next page: https://openairdocs.org/engine/continental-io-520-f/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 = 'IO520F'
ORDER BY difficulty_date DESC
```

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

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