# Service difficulty reports: Cessna 421C

A list on [Cessna 421C](https://openairdocs.org/model/cessna-421c.md).

Newest first. General aviation reporting is voluntary.

Page 1 of 9 · 427 reports

- [SDR 2026FA0000551](https://openairdocs.org/sdr/2026FA0000551.md): Gasket · degraded · Jun 30, 2026 · N68685 · Cessna 421C · Cabin Cooling System
  > FAILED GASKET PN: 5154056-2 FOR THE AC COMPRESSOR, RESULTING IN A SEVERE ENGINE OIL LEAK, SPRAYING ENGINE OIL ON THE EXHAUST SYSTEM.
- [SDR 2026FA0000506](https://openairdocs.org/sdr/2026FA0000506.md): Angle · cracked · Jun 10, 2026 · N543PM · Cessna 421C · Fuselage, Wing Attach Fittings
  > LEFT HAND UPPER ANGLE AT WING ROOT AND FUSELAGE CRACKS UNDER PRESSURIZATION/DEPRESSURIZATION WITH FLEX.
- [SDR 2026FA0000505](https://openairdocs.org/sdr/2026FA0000505.md): Wheel · cracked · Jun 10, 2026 · N543PM · Cessna 421C · Wheel/Ski/Float
  > 3-PIECE NOSE GEAR WHEEL ASSEMBLY CRACKS ON MIDDLE HUB ASSEMBLY #D30321.
- [SDR 2026FA0000316](https://openairdocs.org/sdr/2026FA0000316.md): Intake Duct · loose · May 3, 2026 · N123NP · Cessna 421C · Engine Air Intake System
  > ON 3 MAY 2026, APPROXIMATELY 11:55 AM, N123NP DEPARTED BIL FOR FBL AND FOUND THAT THE RIGHT ENGINE WOULDN'T MAKE RED LINE MAP AND ABORTED HIS TAKEOFF. MAINTENANCE FOUND A COUPLE INDUCTION TUBE CLAMPS LOOSE. THE MECHANIC TIGHTENED BOTH CLAMPS AND AND THE PILOT
- [SDR 2026FA0000153](https://openairdocs.org/sdr/2026FA0000153.md): Attach Fitting · cracked · Aug 20, 2025 · N421KM · Cessna 421C · Wing, Attach Fittings
  > LEFT WING FORWARD SPAR, OUTBOARD UPPER AFT-FACING WING ATTACH FITTING WAS FOUND TO BE CRACKED WITHIN GEAR WELL. THE PART IS SHOWN IN THE 421C IPC, SECTION 03-50, PAGE 16, ITEM 6. THE CRACK MEASURES ROUGHLY 5-1/8" AND RUNS HORIZONTALLY ACROSS SEVEN RIVET HOLES.
- [SDR 2025FA0000147](https://openairdocs.org/sdr/2025FA0000147.md): Fuel Tank · leaking · Mar 4, 2025 · N6867L · Cessna 421C · Fuel Storage
  > SHORTLY AFTER FUELING AIRCRAFT WITH GAMI G100UL BOTH MAIN TANKS STARTED LEAKING FROM MOST INSPECTION PANELS. ALSO A FUNCTIONAL CHECK OF THE FUEL SELECTOR VALVES INDICATES THAT THE RIGHT ENGINE SELECTOR VALVE IS STUCK IN POSITION.
- [SDR 2024FA0000146](https://openairdocs.org/sdr/2024FA0000146.md): Propeller · overspeed · Dec 8, 2023 · N146T · Cessna 421C · Propeller System
  > RIGHT PROP GOVERNOR FAILED APPROACHING LEVEL OFF FROM CLIMB. ENGINE SPIKED TO OVER 6,000 RPM, ENGINE RUINED, BROUGHT PROP CONTROL BACK TO NO AVAIL. THROTTLE BACK AND MIXTURE BACK TO GET ENGINE RPM DOWN. VISUAL PROP COMPLETELY ?AT, PROP WOULD NOT FEATHER, RI
- [SDR 2023FA0000665](https://openairdocs.org/sdr/2023FA0000665.md): Brake Disc · misrepaired · Oct 23, 2023 · Cessna 421C · Landing Gear Brake System
  > INSTALLED A NEW DISC ON LT MLG. LT BRAKE PEDAL FLUCTUATES. CHECKED DISC, & FOUND TO BE.020 DIFFERENCE IN THICKNESS FROM ONE SIDE TO THE OTHER. PART NOT MACHINED PROPERLY.
- [SDR 2023FA0000268](https://openairdocs.org/sdr/2023FA0000268.md): Cylinder · split · May 18, 2023 · N382BW · Cessna 421C · Reciprocating Engine Cylinder Section
  > AN OCCURRENCE WAS REPORTED THAT HAPPENED AT RALEIGH AIRPORT (RDU), ON THE 05/09/2023 AT 1715 EDT. THE SAID AIRCRAFT, N382BW HAD JUST GOTTEN AIRBORNE AND RECEIVED AN ADVISORY FROM ATC THAT SMOKE WAS STREAMING FROM THE LEFT ENGINE. AIRSPEED WAS AT 97 KNOTS AND T
- [SDR 2023F00043](https://openairdocs.org/sdr/2023F00043.md): Cylinder · seized · Jan 26, 2023 · N421J · Cessna 421C · Powerplant System
  > WHILE IN CRUISE FLIGHT AT 19,000 FT, PILOT NOTICED THE RIGHT ENGINE SURGING. HE SUSPECTED IT WAS A FAILED FUEL PUMP AND WHILE ATTEMPTING TO REMEDY THE SITUATION, HE THEN NOTICED MAP DROPPING AND A COMPLETE LOSS OF OIL PRESSURE. THAT IS WHEN HE DECIDED TO SHUT
- [SDR 9FDR202104010001](https://openairdocs.org/sdr/9FDR202104010001.md): Selector Valve · misinstalled · Apr 1, 2021 · N3968G · Cessna 421C · Pitot/Static System
  > WHEN PERFORMING TEST OF ALTERNATE STATIC SYSTEM, THE INSTRUMENTS WOULD NOT SHOW A CLIMB OR DESCENT. THE AIR DATA TEST SET BEHAVED AS THOUGH THERE WAS A MASSIVE STATIC LEAK OR DISCONNECTED LINE. WHEN THE TEST SET WAS CONNECTED TO THE STATIC PORTS ON THE FUSEL
- [SDR 2020FA0000524](https://openairdocs.org/sdr/2020FA0000524.md): Gear · disconnected · Nov 25, 2020 · N421BR · Cessna 421C · Engine (Reciprocating)
  > PILOT NOTED THAT RIGHT ALTERNATOR FAILED IN FLIGHT. POST FLIGHT INSPECTION FOUND ENGINE GEAR, ALTERNATOR DRIVE, RETAINING BOLTS WERE NOT INSTALLED AND TWO WERE FOUND RESTING ON THE ALTERNATOR MOUNTING POINT INSIDE ENGINE CASE. OTHER TWO BOLTS WERE NOT FOUND,
- [SDR 2020FA0000442](https://openairdocs.org/sdr/2020FA0000442.md): Spar · corroded · Oct 9, 2020 · N6794D · Cessna 421C · Fuselage Main, Structure
  > INSPECTED REAR SPAR AND FOUND CORROSION ON AFT SPAR RT SIDE WHERE DOUBLE PLATE IS RIVETED TO SPAR. INTERGRANULAR CORROSION BETWEEN THE DOUBLE AND SPAR. ALSO NOTED RIVETS ARE POPPING OFF DUE TO THE SEVERE CORROSION.
- [SDR HSRR2020022520](https://openairdocs.org/sdr/HSRR2020022520.md): Crossbeam · cracked · Feb 18, 2020 · N421GJ · Cessna 421C · Nacelle/Pylon, Main Frame
  > AFT NACELLE CROSS BEAM CRACKED AT OUTBOARD MOUNT FLANGE.
- [SDR 6DFA2019042319001](https://openairdocs.org/sdr/6DFA2019042319001.md): Heater · odor · Apr 19, 2019 · N421LE · Cessna 421C · Heating System
  > SMOKE IN CABIN DURING CRUISE. PIC TURNED ON HEATER AND FAN SWITCHES. NO HEAT, BUT FAINT BURNING SMELL. PIC LOOKED BACK SAW SMOKE AND SECURED HEATER.
- [SDR 2018FA0000508](https://openairdocs.org/sdr/2018FA0000508.md): Pressure Switch · failed · Dec 11, 2018 · N605SR · Cessna 421C · Heating System
  > IN SPITE OF NO REQUIREMENT TO TEST THIS PRESSURE SWITCH. FOUND THIS PRESSURE SWITCH FAILED IN THE CLOSED POSITION.
- [SDR 2018FA0000484](https://openairdocs.org/sdr/2018FA0000484.md): Connector · unsecure · Nov 16, 2018 · N200DC · Cessna 421C · Engine Indicating System Wiring
  > LEFT ENGINE TACHOMETER GENERATOR CANNONPLUG VIBRATED LOOSE DUE TO NOT BEING SAFETIED AND FROM VIBRATION OF ENGINE. CANNON PLUG REATTACHED AND SAFETIED. GROUND RAN ENGINE AND OPERATED NORMALLY. SUGGEST VERIFICATION OF CANNON PLUG BEING SAFTIED DURING NORMAL MAI
- [SDR 2018FA0000313](https://openairdocs.org/sdr/2018FA0000313.md): Actuator · failed · Jul 31, 2018 · N427JM · Cessna 421C · Landing Gear Actuator
  > NOSE GEAR COLLAPSED DURING NORMAL LANDING, NOSE GEAR ACTUATOR FAILED - UNLOCKED.
- [SDR 1TLR20180425001](https://openairdocs.org/sdr/1TLR20180425001.md): Throttle Body · leaking · Apr 25, 2018 · N212R · Cessna 421C · Fuel Controlling System
  > DURING ANNUAL INSPECTION ENGINE RUNS, NOTICED FUEL LEAK EMINATING FROM THROTTLE BODY FUEL CONTROL SHAFT. LOCATION OF THE FUEL LEAK IS RIGHT ABOVE EXHAUST MANIFOLD.
- [SDR CXUA201803210140](https://openairdocs.org/sdr/CXUA201803210140.md): Engine · failed · Dec 7, 2017 · N726RT · Cessna 421C · Engine (Reciprocating)
  > RIGHT ENGINE FAILED.
- [SDR 2017FA0000517](https://openairdocs.org/sdr/2017FA0000517.md): Drive Shaft · sheared · Oct 18, 2017 · N88606 · Cessna 421C · AC Generator-Alternator
  > PILOT REPORTED ON APPROACH TO LANDING, A MOMENTARY RIGHT ENGINE POWER FLUCTUATION, FOLLOWED BY RIGHT ALTERNATOR FAILURE, LANDED WITHOUT INCIDENT. POST FLIGHT MAINTENANCE FOUND ALTERNATOR DRIVE SHAFT SHEARED NEAR ALTERNATOR STATOR. THE ALTERNATOR DRIVE COUPLER
- [SDR CSLR2017082900001](https://openairdocs.org/sdr/CSLR2017082900001.md): Oil Cooler · cracked · Aug 18, 2017 · N88606 · Cessna 421C · Engine Oil Cooler
  > DURING ROUTINE POST OIL CHANGE INSPECTION, AN OIL LEAK WAS DISCOVERED ON THE OUTBOARD REAR CORNER OF THE LEFT ENGINE. INVESTIGATION REVEALED A CRACK OR VOID IN THE WELD ON BOTTOM OF THE OIL COOLER WHERE THE OIL LEAK ORIGINATED. REPLACED WITH NEW UNIT OPS OK.
- [SDR 2017FA0000335](https://openairdocs.org/sdr/2017FA0000335.md): Alternator · failed · Apr 20, 2017 · N410AJ · Cessna 421C · DC Generator-Alternator
  > NOTICED HEAVY ELECTRICAL SMELL COMING FROM ALTERNATOR, FOUND BEARING SEIZING UP.
- [SDR 2017FA0000333](https://openairdocs.org/sdr/2017FA0000333.md): Alternator · failed · Apr 20, 2017 · N30LT · Cessna 421C · DC Generator-Alternator
  > LEFT HAND ALTERNATOR OPERATION INTERMITTENT AFTER INSPECTION CHECK RUN, FOUND ALTERNATOR STARTING TO SEIZE UP WITH DAMAGE TO CLUTCH ASSEMBLY.
- [SDR 2017FA0000332](https://openairdocs.org/sdr/2017FA0000332.md): Alternator · failed · Apr 20, 2017 · N307FM · Cessna 421C · DC Generator-Alternator
  > NEW ALTERNATOR BEARINGS SEIZED AND SHEARED SHAFT. THIS IS ONE OF THREE WITH UNDER 300 HOURS SINCE NEW.
- [SDR 2017FA0000152](https://openairdocs.org/sdr/2017FA0000152.md): Cylinder · damaged · Apr 3, 2017 · N421HP · Cessna 421C · Reciprocating Engine Cylinder Section
  > AT INSPECTION ALL CYLINDERSS, HAD LOW DIFFERENTIAL PRESSURE CHECK, FOUND GLAZING ON CYLINDERSS AND ALL EXHAUST VALVE GUIDES WERE WORN OUT. REPLACED.
- [SDR 2017FA0000364](https://openairdocs.org/sdr/2017FA0000364.md): Lifter · spalled · Mar 17, 2017 · N6794D · Cessna 421C · Reciprocating Engine Cylinder Section
  > BOTTOM SURFACE OF LIFTERS SPALLING CAUSING DAMAGE TO CAMSHAFT.
- [SDR TO3R20170214001](https://openairdocs.org/sdr/TO3R20170214001.md): Air Filter · separated · Feb 14, 2017 · N999DM · Cessna 421C · Engine Air Intake System
  > OUR CUSTOMER REPORTED UNEVEN IDLE AND ERRATIC EGTS ON ALL CYLINDERS. AFTER TROUBLESHOOTING WE FOUND THAT ONE OF THE FILTERS WE REPLACED AT THE AIRCRAFTS LAST ANNUAL (18 HOURS AGO)HAD LOST THE INBOARD FELT SEAL AND PARTICLES WERE FOUND THROUGHOUT UPPER DECK RE
- [SDR 2017FA0000405](https://openairdocs.org/sdr/2017FA0000405.md): Line · failed · Dec 19, 2016 · N421EM · Cessna 421C · Hydraulic System, Main
  > THIS HYDRAULIC LINE RUNS FROM THE EMERGENCY BLOW DOWN BOTTLE TO THE SHUTTLE VALVE IN THE NOSE COMPARTMENT. WHEN WE PULLED THE BLOW DOWN LEVER THE LINE BLEW OFF THE BOTTLE FITTING SO THE LANDING GEAR DID NOT COME DOWN. FOUND THE LINE HAD A SINGLE FLARE THAT F
- [SDR 2016FA0000278](https://openairdocs.org/sdr/2016FA0000278.md): Cylinder Head · cracked · Jun 7, 2016 · N421AN · Cessna 421C · Reciprocating Engine Cylinder Section
  > PILOT WAS IN CRUISE AND THE RT ENGINE STARTED TO VIBRATE. AN ALTERNATE AIRPORT WAS SELECTED AND ENROUTE THE ENGINE STARTED TO LOOSE POWER. MAINTENANCE PERSONNEL REMOVED THE COWLING AND NOTED THAT THE NR 6 CYLINDER HEAD WAS SEPARATED FROM THE BARREL. CYLINDE
- [SDR 17GR201605160002](https://openairdocs.org/sdr/17GR201605160002.md): Housing · cracked · May 13, 2016 · N421ES · Cessna 421C · Engine Air Intake System
  > CRACKED LT ENGINE FILTER HOUSING. CRACK DISCOVERED WHILE ADJUSTING THE ALTERNATE AIR DOOR. CRACK WAS ON THE FLANGE BETWEEN THE FILTER AND THE ALTERNATE AIR DOOR ASSEMBLY.
- [SDR 2016FA0000226](https://openairdocs.org/sdr/2016FA0000226.md): Alternator · failed · May 10, 2016 · N421ZM · Cessna 421C · AC Inverter
  > RIGHT ALTERNATOR FAILED. PULLED OFF THE ALTERNATOR AND FOUND BROKEN ALTERNATOR SHAFT 1" OTBD OF DRIVE COUPLING. CAME OFF ENGINE FROM ACFT.
- [SDR 2016FA0000085](https://openairdocs.org/sdr/2016FA0000085.md): Tube · leaking · Jan 4, 2016 · N421FN · Cessna 421C · Turbine Engine Oil System
  > PILOT NOTED AN OIL LEAK ON THE LEFT ENGINE WHILE IN CRUISE FLIGHT AND REDUCED POWER WITH AN UNEVENTFUL LANDING PERFORMED. MAINTENANCE INSPECTED THE AIRCRAFT AND FOUND A LARGE HOLE IN THE BREATHER TUBE BETWEEN THE COMPRESSOR AND TURBINE LEAKING OIL AS WELL AS
- [SDR MLJA2016F00038](https://openairdocs.org/sdr/MLJA2016F00038.md): Windshield · delaminated · Dec 18, 2015 · N421HP · Cessna 421C · Flight Compartment Windows
  > PILOT WAS CLIMBING THROUGH 11,000 WHEN WINDSIELD DELAMINATED AND SPIDER CRACKED. PILOT MADE A PRECAUTIOANARY LANDING.
- [SDR CA151216014](https://openairdocs.org/sdr/CA151216014.md): Engine · power loss · Dec 10, 2015 · Cessna 421C · Engine (Turbine/Turboprop)
  > (CAN) DURING CLIMB THE ENGINE LOST POWER WITH NO PRIOR WARNING OR ABNORMAL INDICATIONS. THE ENGINE WAS SECURED AND THE CREW PERFORMED AN UNEVENTFUL SINGLE ENGINE LANDING AT THE DEPARTURE AIRPORT. POST FLIGHT INSPECTION FOUND A SHEARED FUEL PUMP DRIVE SHAFT. TH
- [SDR 2015FA0000556](https://openairdocs.org/sdr/2015FA0000556.md): Intake Valve · failed · Nov 9, 2015 · N43BM · Cessna 421C · Reciprocating Engine Cylinder Section
  > PILOT REPORTED A VIBRATION IN THE LT ENGINE AND MADE A PRECAUTIONARY LANDING. UPON INVESTIGATION IT WAS FOUND THAT THE LT ENGINE HAD DROPPED AN INTAKE VALVE AND A HOLE HAD BEEN KNOCKED IN THE CASE BELOW THE MAGS.
- [SDR 2015FA0000480](https://openairdocs.org/sdr/2015FA0000480.md): Engine · power loss · Oct 6, 2015 · N6161X · Cessna 421C · Engine (Reciprocating)
  > LOSS OF POWER DURING CRUISE WITH A SUBSEQUENT UNSCHEDULED LANDING.
- [SDR 17GR159B092401](https://openairdocs.org/sdr/17GR159B092401.md): Governor · failed · Sep 22, 2015 · N420RA · Cessna 421C · Propeller Governor
  > AFTER ROTATION PROPELLER WENT INTO FEATHER AND ENGINE SHUT DOWN WITHOUT ACTION ON THE PART OF THE PILOT. GOVERNOR WAS FOUND TO BE BEYOND ECONOMICAL REPAIR. PROPELLER AND GOVERNOR O/H 1006.8 PRIOR TO THIS EVENT. PILOT WAS BALE TO CONTINUE CLIMB ON 1 ENGINE AND
- [SDR NF2R201812210003](https://openairdocs.org/sdr/NF2R201812210003.md): Lifter · galled · Sep 4, 2015 · N421JH · Cessna 421C · Reciprocating Engine Cylinder Section
  > THE LEFT ENGINE LIFTER ARE PITTED.
- [SDR YN8R201504280001](https://openairdocs.org/sdr/YN8R201504280001.md): Bearing · worn · Apr 21, 2015 · N421RS · Cessna 421C · Magneto/Distributor
  > PILOT REPORTED NORMAL MAG DROP PRIOR TO DEPARTURE. IN CRUISE FLIGHT, PILOT FELT A SHUDDER IN THE AIRCRAFT AND LOST SOME POWER IN THE LEFT ENGINE. THIS WAS HIS DESTINATION. WE REMOVED THE COWLING ON THE LEFT ENGINE, REMOVED THE RT MAG AND FOUND IT VERY HARD
- [SDR 2015FA0000245](https://openairdocs.org/sdr/2015FA0000245.md): Crankcase · cracked · Mar 11, 2015 · N88584 · Cessna 421C · Reciprocating Engine Power Section
  > DURING A 100 HOUR INSPECTION, FOUND A SUSPECT CRACK ON THE RT ENGINE BETWEEN THE NR 1 AND NR 3 CYLINDERS. PERFORMED A DYE PENETRATE INSPECTION AND VERIFIED AN APPROXIMATELY 4" CRACK IN THE CRANKCASE EXTENDING FROM A THROUGH BOLT UP INTO THE CRITICAL AREA AS OU
- [SDR IGXR2014FA0000710](https://openairdocs.org/sdr/IGXR2014FA0000710.md): Line · failed · Dec 15, 2014 · N122TJ · Cessna 421C · Aircraft Fuel Distribution System
  > AFTER TAKEOFF, LT ENGINE STOPPED PRODUCING FULL POWER. AIRCRAFT SAFELY RETURNED BACK WITH 1 ENGINE. EXAMINED LT ENGINE AND DISCOVERED CYL NR 6 FUEL LINE DETACHED FROM FUEL MANIFOLD, LINE FAILED AT SOLDER JOINT AT MANIFOLD END. R & R CYLINDER NR 6 FUEL LINE
- [SDR 2014FA0000701](https://openairdocs.org/sdr/2014FA0000701.md): Crankshaft · broken · Nov 20, 2014 · N8HT · Cessna 421C · Reciprocating Engine Power Section
  > CRANKSHAFT BROKEN AT NR 3 MAIN JOURNAL. POSSIBLE INTERNAL FLAW AT MANUFACTURING.
- [SDR 2014FA0000358](https://openairdocs.org/sdr/2014FA0000358.md): Clamp · failed · Jun 2, 2014 · N558BF · Cessna 421C · Engine (Turbine/Turboprop)
  > FOD DAMAGE WAS FOUND ON LT ENGINE TURBO COMPRESSOR BLADES. THE SOURCE OF THE FOD DAMAGE WAS THE TAIL OFF FROM THE BAND CLAMP THAT HOLDS THE FILTER HOUSING ONTO THE TURBO. THE TAIL HAD AT SOME TIME SINCE LAST ANNUAL BROKEN OFF AND WAS SUCKED THROUGH THE GAP F
- [SDR 2014FA0000266](https://openairdocs.org/sdr/2014FA0000266.md): Nut · missing · Apr 23, 2014 · N459DM · Cessna 421C · Reciprocating Engine Cylinder Section
  > RT ENGINE NR 5 CYLINDER WAS DETERMINED TO HAVE 4 CYLINDER HOLD DOWN NUTS MISSING. UNABLE TO DETERMINE THE CAUSE. ENGINE REMOVED AND SENT OUT FOR REPAIR.
- [SDR FAA20140131000002](https://openairdocs.org/sdr/FAA20140131000002.md): Cylinder · cracked · Jan 9, 2014 · N421RX · Cessna 421C · Reciprocating Engine Cylinder Section
  > DURING SCHEDULED INSPECTION, NOTICED LIGHT COATING OF OIL TOP FWD CASE. CLEANED AND COMPLIED WITH CSB97-9 DYE CHECK. VERIFIED CRACK FWD TOP OF NR 5 CYLINDER. NOTED FLOW DIVIDER BRACKET BROKEN FWD AND AFT OF MOUNT. 166 HRS. SINCE RAM SERVICEABLE CASE INSTALL
- [SDR IBUA2014F00048](https://openairdocs.org/sdr/IBUA2014F00048.md): Sleeve · out of position · Nov 14, 2013 · N745CA · Cessna 421C · Fire Protection System Wiring
  > ACFT WAS IN FLIGHT WHEN A FIRE WARNING LIGHT ILLUMINATED. PILOT ACTIVATED ENGINE EXTINGUISHER SYS AND WARNING LIGHT WENT OUT. DURING INSPECTION, FIRE SLEEVE PROTECTING ENGINE WIRE BUNDLE AFT OF ENGINE, ADJACENT TO INBD EXHAUST PIPE WAS FOUND TO BE TOUCHING
- [SDR 2013FA0000674](https://openairdocs.org/sdr/2013FA0000674.md): Boot · failed · Nov 8, 2013 · N720FS · Cessna 421C · Airfoil Anti/De-ice System
  > EYELET ATTACHMENT NOT FULLY INSULATED ALLOWING DIRECT SHORT TO GROUND ON ONE DE-ICE BOOT. THE SECOND WAS A FAILED INBD CIRCUIT.
- [SDR CA131021001](https://openairdocs.org/sdr/CA131021001.md): Engine · inoperative · Sep 25, 2013 · Cessna 421C · Engine (Turbine/Turboprop)
  > (CAN) SHORTLY AFTER TAKEOFF, THE ACFT CRASHED IN A FIELD WITHIN AIRPORT BOUNDARY. THE LT ENGINE WAS PRODUCING NO POWER. THE BEA HAS ASKED FOR ENGINE MFG ASSISTANCE FOR THE INVESTIGATION OF THE ENGINES WHICH WILL TAKE PLACE AT A LATER DATE.
- [SDR YN8R201307310001](https://openairdocs.org/sdr/YN8R201307310001.md): Pump · leaking · Jul 31, 2013 · Cessna 421C · Engine Fuel Pump
  > AFTER FUELING, PILOT NOTICED FUEL DRIPPING FROM GANG DRAIN BENEATH ENGINE. DISCOVERED FUEL WAS DRIPPING FROM ENGINE DRIVEN FUEL PUMP AT A RATE OF A DROP EVERY THREE SECONDS.

Next page: https://openairdocs.org/model/cessna-421c/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 aircraft_model_key = '421C'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/model/cessna-421c/reports

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