# Service difficulty reports: Cessna 337H A list on [Cessna 337H](https://openairdocs.org/model/cessna-337h.md). Newest first. General aviation reporting is voluntary. - [SDR CA130710010](https://openairdocs.org/sdr/CA130710010.md): Stop Pin · backed out · Jul 10, 2013 · Cessna 337H · Engine Fuel Pump > (CAN) THE PILOT REPORTED THAT HIS MIXTURE CONTROLS WHERE A FULL KNOB OUT FROM EACH OTHER AND FUEL FLOWS WHERE OUT FROM EACH OTHER DURING GROUND RUN. INSPECTION REVEALED THE MIXTURE STOP PIN ON THE REAR ENGINE FUEL PUMP HAD COME OUT. THE MIXTURE CONTROL COULD - [SDR CA100608014](https://openairdocs.org/sdr/CA100608014.md): Drive Gear · worn · Jun 1, 2010 · Cessna 337H · Magneto/Distributor > ON INSP OF OIL SCREEN METAL WAS FOUND AND INSP WAS CARRIED OUT AND FOUND THAT THE MAGNETO DRIVE GEAR WAS MISSING SEVERAL TEETH AND THE REST OF THE TEETH WHERE WORN DOWN TO ALMOST A KNIFE EDGE. IT IS ALMOST LIKE THE GEAR WAS NOT HARDENED PROPERLY. - [SDR 2009FA0000510](https://openairdocs.org/sdr/2009FA0000510.md): Air Filter · defective · Jun 9, 2009 · N1244S · Cessna 337H · Engine Fuel and Control > UPON RECEIVING INSP OF NEW MFG AIR FILTERS PN P107336 IT WAS FOUND THAT 3 OUT OF 4 NEW FILTERS HAD A DEFECTIVE SEALING SURFACE CAUSING THE SEALING/MATING SURFACE TO CRACK AND CRUMBLE. THIS DEFECTIVE SEALING SURFACE COULD POTENTIALY ENTER THE ENGINE INLET. THE - [SDR 2006FA0000863](https://openairdocs.org/sdr/2006FA0000863.md): Clamp · cracked · Jul 18, 2006 · N1258S · Cessna 337H · Engine Collector/Tailpipe/Nozzle > WHILE DOING A PRE-TOW WALKAROUND INSPECTION, NOTICED THE FRONT ENGINE EXHAUST TAIL PIPES WERE LOOSE AND SUPPORT CLAMPS PN 15501261 BROKEN ON BOTH LT AND RT SIDES. BOTH CLAMPS HAD BOTH OUTER EARS BROKEN OFF AT WELDMENT. PREVIOUS CLAMPS FAILED AFTER EXHAUST SY - [SDR 2004FA0000690](https://openairdocs.org/sdr/2004FA0000690.md): Points · worn · Jul 1, 2004 · N1258S · Cessna 337H · Magneto/Distributor > PILOT REPORTED REAR ENGINE LT MAGNETO INOPERABLE ON RUN-UP. TROUBLESHOT AND FOUND CONTACT POINTS NOT OPENING FAR ENOUGH. NYLON CAM FOLLOWER FOUND MELTED AT CONTACT POINT ARM. CONTACT COMPARTMENT COVER HAS VENT HOLES THAT ARE COVERED BY INSTRUCTIONS IN MASTE - [SDR 2004FA0000266](https://openairdocs.org/sdr/2004FA0000266.md): Safety Switch · damaged · Feb 18, 2004 · N1244S · Cessna 337H · Landing Gear Position and Warning > AFTER TAKE OFF PILOT WAS UNABLE TO RETRACT THE LANDING GEAR, THE GEAR DID SHOW DOWN AND LOCKED. THE PLANE LANDED WITHOUT INCIDENT. FOUND NOSE GEAR SAFETY SWITCH BAD INTERNALLY NOT ALLOWING NOSE GEAR TO RETRACT, (SENSING STILL ON GROUND). IT IS SUSPECTED THAT - [SDR AUS20031318](https://openairdocs.org/sdr/AUS20031318.md): Control Cable · frayed · Nov 28, 2003 · Cessna 337H · Trailing Edge Flap Control System > (AUS) IB FLAP CABLE CONTAINED BROKEN WIRES LOCATED AT TIGHT BEND AROUND THE BELLCRANK. APPROXIMATELY 50 PERCENT OF THE WIRES WERE BROKEN. INSPECTION CARRIED OUT IN RESPONSE TO MFG ALERT. - [SDR 2002FA0000005](https://openairdocs.org/sdr/2002FA0000005.md): Arm · worn · Dec 20, 2001 · N1258S · Cessna 337H · Mixture Control > DURING ANNUAL INSPECTION FOUND MIXTURE ARM ROD END ATTACHING BOLT LOOSE. ATTEMPTED TO TIGHTEN BOLT BUT FOUND THERE WAS STILL PLAY. DISASSEMBLED ROD END ATTACHING BOLT AND A STEEL SERRATED BEARING INSERT FELL OUT OF THE BRONZE MIXTURE ARM. THIS WAS CAUSED BY - [SDR 20010529CW007](https://openairdocs.org/sdr/20010529CW007.md): Gear · worn · Apr 23, 2001 · N729AS · Cessna 337H · Vacuum Distribution System > A DETAINLED INVESTIGATION OF THE STARTER DRIVE REVEALED THAT ALL OF THE GEAR TEETH WERE WORN EXCESSIVELY ON ONE OF THE BEVEL GEARS WHICH DRIVES THE VACUUM PUMP. - [SDR CA001228030](https://openairdocs.org/sdr/CA001228030.md): Fuel Tank · cracked · Nov 15, 2000 · Cessna 337H · Fuel Storage > (CAN) WHILE BEING STORED IN A HANGAR RIGHT WING WAS DISCOVERED TO BE LEAKING FUEL. UPON FURTHER INSPECTION NR3 FUEL TANK P/N 1516132-16 HAD A CRACK ON TOP NEAR THE TRAILING EDGE. FUEL TANK WAS THEN REMOVED, REPAIRED AND REINSTALLED. - [SDR CA001211005](https://openairdocs.org/sdr/CA001211005.md): Bracket · cracked · Oct 20, 2000 · Cessna 337H · Landing Gear Steering System > (CAN) DISCOVERED DURING A 100 HOUR INSPECTION. THE TOP OF THE BRACKET WHERE THE SHIMMY DAMPER ATTACHES WAS FOUND CRACKED. - [SDR CA001211004](https://openairdocs.org/sdr/CA001211004.md): Cam · cracked · Oct 20, 2000 · Cessna 337H · Steering Unit > (CAN) DISCOVERED DURING A 100-HOUR INSPECTION. THE SHIMMY DAMPER ATTACH BRACKET WAS FOUND CRACKED. DUE TO THIS, THE LANDING GEAR (NOSE) WAS REMOVED AND THE STEERING CAM WAS SENT OUT FOR NDT. THE CAM WAS FOUND CRACKED AT THE LOWER FORWARD SHIMMY DAMPER ATTACH - [SDR 20000504SH014](https://openairdocs.org/sdr/20000504SH014.md): Circuit Breaker · failed · Mar 28, 2000 · N12445 · Cessna 337H · Landing Gear Retraction/Extension System > THE CIRCUIT BREAKER FAILED TO THE OPEN POSITION PREVENTING A NORMAL EXTENSION OF THE AIRCRAFT LANDING GEAR. (X) - [SDR CA000713003](https://openairdocs.org/sdr/CA000713003.md): Clevis Pin · sheared · Mar 3, 2000 · Cessna 337H · Landing Gear Retraction/Extension System > (CAN) ON INSPECTION OF LANDING GEAR DOWNLOCK ACTUATOR THE RT CLEVIS PIN HALF WAS MISSING. THE CLEVIS PIN WAS REMOVED AND FOUND TO BE SHEARED. A NEW PIN WAS INSTALLED.ON FURTHER INSPECTIONS TWO OTHERS WERE FOUND SHEARED AND MANY OTHER BENT ON DIFERENT AIRCRAFT. - [SDR 98ZZZX874](https://openairdocs.org/sdr/98ZZZX874.md): Pump · failed · Feb 5, 1998 · N132CM · Cessna 337H · Reciprocating Engine Oil System > FOLLOWING TAKEOFF, AIRSPEED SLOWED. REAR ENGINE INSTRUMENTS INDICATED ENGINE WAS LOSING POWER. OIL PRESSURE WAS DROPPING AND THE PROPELLER WENT INTO FEATHER. THE ENGINE WAS SHUT DOWN AND A LANDING WAS MADE. AN INSPECTION OF THE ENGINE DETERMINED THE OIL PU - [SDR CA970610001](https://openairdocs.org/sdr/CA970610001.md): Oil Pump · drive sheared · Jun 2, 1997 · Cessna 337H · Reciprocating Engine Oil System > (CAN) PROPELLER FEATHERED AND ENGINE SHUTDOWN IN FLIGHT. AIRCRAFT RETURNED TO BASE. POST FLIGHT INSPECTION FOUND THE OIL PUMP DRIVE GEAR SHEARED. - [SDR EY2R9600923](https://openairdocs.org/sdr/EY2R9600923.md): Dowel · corroded · Aug 1, 1996 · Cessna 337H · Propeller Assembly > DOWEL CORRODED. - [SDR EY2R9600922](https://openairdocs.org/sdr/EY2R9600922.md): Cylinder Pin · corroded · Aug 1, 1996 · Cessna 337H · Propeller Assembly > CORROSION FOUND CYLINDER PIN. - [SDR EY2R9600921](https://openairdocs.org/sdr/EY2R9600921.md): Dowel · corroded · Aug 1, 1996 · Cessna 337H · Propeller Assembly > DOWEL CORRODED. - [SDR EY2R9600920](https://openairdocs.org/sdr/EY2R9600920.md): Cylinder Pin · corroded · Aug 1, 1996 · Cessna 337H · Propeller Assembly > CYLINDER PIN CORRODED. - [SDR 96ZZZX2501](https://openairdocs.org/sdr/96ZZZX2501.md): Hub · broken · Mar 6, 1996 · N26FG · Cessna 337H · Alternator-Generator Drive > THIS FAILURE OCCURRED DESPITE C/W TCM SB 95-3. THE BUSHING AND RETAINER WERE SHOWING WEAR, HOWEVER, NOT NEAR FAILURE. SUSPECT THIS FAILURE IS A BY-PRODUCT OF THE SLOP IN THE BUSHING. THIS AREA SHOULD GET A CLOSE INSPECTION AT C/W SERVICE BULLETIN. ## 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 = '337H' ORDER BY difficulty_date DESC ``` This list as a web page: https://openairdocs.org/model/cessna-337h/reports --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.