# Service difficulty reports: Lycoming GO-480-G1D6 A list on [Lycoming GO-480-G1D6](https://openairdocs.org/engine/lycoming-go-480-g1d6.md). Newest first. General aviation reporting is voluntary. - [SDR 2025FA0000523](https://openairdocs.org/sdr/2025FA0000523.md): Pump · high pressure · Nov 26, 2024 · N461F · Helio H295 · Fuel Boost Pump > PILOTS REPORTED THAT WHEN THE ELECTRIC FUEL BOOST PUMP WAS RUN THAT THE ENGINE FUEL PRESSURE EXCEEDED REDLINE. AFTER MUCH TROUBLE SHOOTING AND ADJUSTING AND LOOKING FOR RESTRICTION IN THE FUEL SYSTEM, IT WAS DETERMINED THAT THE ENGINE DRIVEN PUMP WAS NOT REGU - [SDR EVGR202100624](https://openairdocs.org/sdr/EVGR202100624.md): Pump · leaking · Dec 6, 2021 · N87763 · Helio H395 · Engine Fuel Pump > THE ENGINE DRIVEN PUMP WAS FOUND LEAKING FUEL OUT OF THE PUMP DRAIN AT A SLOW RATE. THE PUMP WAS REPLACED AND THE REPLACEMENT STARTED LEAKING IMMEDIATELY AT A FASTER RATE FROM THE PUMP DRAIN. IT WAS NOTICED THAT THERE IS NO LEAKAGE WHEN THE PUMP WAS CONNECTED - [SDR HYTA201606060001](https://openairdocs.org/sdr/HYTA201606060001.md): Relief Valve · backed out · Jun 6, 2016 · N713C · Helio H295 · Reciprocating Engine Oil System > A DISCREPANCY WAS NOTED BY PILOT OF HIGH OIL PRESSURE, A MECHANIC WAS SOON DISPATCHED TO TURN THE OIL PRESSURE DOWN. HE TURNED DOWN THE OIL PRESSURE FROM THE OIL RELIEF VALVE AND REINSTALLED IAW ENGINE MFG DATA, WHEN COMPLETE HE PERFORMED AN OPS AND LEAK CHEC - [SDR EVGR201409250001](https://openairdocs.org/sdr/EVGR201409250001.md): Spring · cracked · Sep 25, 2014 · N61JA · Helio H295 · Nose/Tail Landing Gear > BOTH HOOKS OF ONE OF THE TWO SPRING HOOKS, TAIL WHEEL STEERING SPRING, CRACKED AND FAILED. THE ASSEMBLY ONLY HAD 7.6 HOURS TIME IN SERVICE AND 18 LANDINGS WHEN IT FAILED. VISUAL EXAMINATION WITH A MAGNIFYING LENS REVEALED RUST IN THE CRACK INITIATION AREA O - [SDR EVGR201304120001](https://openairdocs.org/sdr/EVGR201304120001.md): Plug · worn · Nov 4, 2013 · N5387G · Helio HT295 · Reciprocating Engine Power Section > OIL ANALYSIS CAME BACK WITH VERY HIGH ALUMINUM METAL CONTENT IN THE OIL. METAL WAS ALSO VISIBLE IN THE DRAINED OIL WITH AN APPEARANCE LIKE METAL-FLAKE PAINT. THE FLAKES WERE SMALL ENOUGH THAT SOME WERE NOT BEING TRAPPED IN THE OIL FILTER EXCEPT SOME AS SLUDG - [SDR EVGR060210](https://openairdocs.org/sdr/EVGR060210.md): Fire Detector · chafed · Jun 2, 2010 · N61JA · Helio H295 · Fire Detection > (EVGR) THE FIRE DETECTION LOOP IN THE ENGINE COMPARTMENT CHAFED AGAINST SCAT TUBE CAUSING INTERMITTENT ALARM. THE UNIT IS FIRE DETECTION SYSTEM INSTALLED UNDER STC SA1586SO. - [SDR 20040823](https://openairdocs.org/sdr/20040823.md): Camshaft · making metal · Aug 20, 2004 · Helio H295 · Reciprocating Engine Power Section > AFTER ENGINE O/H, THE ENGINE WAS TEST RUN 5 HOURS ON THE TEST STAND AND THEN DISASSEMBLED BECAUSE OF METAL IN OIL. AS PART OF INSPECTION NOTED THAT NR 4 EXHAUST CAM LOBE APPEARED TO BE WEARING ABNORMALLY. HAS A ROUGH SURFACE WITH SOME PITTING AND APPEARANCE - [SDR 20040816](https://openairdocs.org/sdr/20040816.md): Bearing · flaking · Aug 13, 2004 · Helio H295 · Reciprocating Engine Power Section > ASSEMBLED THE ENGINE ACCORDING TO THE LYCOMING OVERHAUL MANUAL AND STANDARD PRACTICES. THE ENGINE WAS PREOILED AND RUN IN A TEST STAND USING AEROSHELL 100W OIL. AFTER A TWO HOUR BREAK-IN RUN WHERE ALL TEMPS AND PRESSURES WERE NORMAL THE OIL FILTER WAS CUT OP - [SDR 040505](https://openairdocs.org/sdr/040505.md): Rocker Cover · worn · May 4, 2004 · N62JA · Helio H295 · Reciprocating Engine Cylinder Section > ROCKER BOX, PN 68795 WAS WORN BY THE VALVE ROCKER SHAFT UNTIL THE SHAFT CUT THROUGH THE SHAFT RETAINER WHICH IS SPOT WELDED TO THE VALVE COVER. THREE OF SIX COVERS WERE SEVERELY WORN. A FOURTH COVER'S BRACKET WAS WORN THROUGH AND THE RESULTING SLUG OF METAL - [SDR CA040412014](https://openairdocs.org/sdr/CA040412014.md): Lug · cracked · Apr 7, 2004 · Helio H295 · Engine Mount Section > (CAN) HARD LANDING OCCURRED AND A HARD LANDING INSPECTION WAS CARRIED OUT ON THE ENTIRE A/C. NO OTHER DEFECTS WERE FOUND OTHER THAN THE CRACKED LUG MOUNT. AN ENGINE CHANGE WAS DONE. ENGINE MODEL G0-480-G1D6 S/N L-394-37 WAS INSTALLED. - [SDR 030815](https://openairdocs.org/sdr/030815.md): Attach Fitting · cracked · Aug 15, 2003 · N60JA · Helio H295 · Wing, Attach Fittings > UPPER WING ATTACH FITTINGS ARE CRACKED. THE CRACKS APPEAR ON THE FACE OF THE FITTINGS THAT GO AGAINST THE SPAR CARRY THRU. IN SOME CASES THE CRACKS CAN BE DETECTED INSIDE THE BARREL NUT BORE. 3 OF THE 4 FITTINGS ON THIS PLANE ARE CRACKED. TIMES IN SERVICE - [SDR 030327](https://openairdocs.org/sdr/030327.md): Points · loose · Mar 27, 2003 · N61JA · Helio H295 · Magneto/Distributor > MAGNETO BREAKER ASSEMBLY HAS LOOSE CAM FOLLOWER. - [SDR JUK2001F00001](https://openairdocs.org/sdr/JUK2001F00001.md): Camshaft · damaged · Aug 23, 2001 · N269L · Helio H295 · Reciprocating Engine Power Section > NEW CAMSHAFT AND LIFTERS WERE INSTALLED AT ENGINE OVERHAUL. ENGINE DISASSEMBLED AT 781 HOURS TSO DUE TO PROP STRIKE. TWO LOBES AND LIFTERS WERE SPALLED, ONE SEVERELY, THE OTHER TO A LESSER DEGREE. THE TWO LOBES INVOLVED ONLY OPERATE ONE VALVE EACH. THE LOB - [SDR 99ZZZX4519](https://openairdocs.org/sdr/99ZZZX4519.md): Valve Seat · separated · Nov 22, 1999 · Helio H295 · Reciprocating Engine Cylinder Section > THE EXHAUST VALVE SEAT WAS FOUND TO HAVE COME OUT FOLLOWING THE ENGINE TEST STAND RUN AND PRIOR TO THE INITIAL INSTALLATION RUN ON THE AIRCRAFT. A 'RATTLE' WAS NOTED AS THE ENGINE WAS TURNED THROUGH BY HAND. THE CYLINDER OVERHAUL SHOP HAS BEEN ALERTED AND OT - [SDR CA990715049](https://openairdocs.org/sdr/CA990715049.md): Line · ruptured · Jun 24, 1999 · Helio H295 · Engine Oil Distribution (Airframe Furnished) > (CAN) PILOT SMELLED SMOKE ON CLIMB-OUT AND SHUT OFF ALTERNATOR AND ELECTRICS. RETURNED TO DEADMAN'S POND. INVESTIGATION FOUND MAIN OIL LINE FROM ENGINE TO FILTER RUPTURED AT MID-POINT. SUSPECT THAT AT SOME TIME, LINE MAY HAVE BEEN IN CLOSE PROXIMITY TO THE - [SDR 97ZZZX4215](https://openairdocs.org/sdr/97ZZZX4215.md): Piston Pin · broken · Aug 15, 1997 · N2FOR · Helio H295 · Reciprocating Engine Cylinder Section > OPERATORS WERE NOTIFIED AIRCRAFT'S ENGINE CONTAINED A PISTON PIN FROM THE BATCH LISTED IN LYC SB 527C. AIRCRAFT WAS REMOVED FROM SERVICE AND ALL CYLINDERS REMOVED TO VISUALLY INSPECT FOR BATCH NR 17328. CYLINDER NR 5 REVEALED BROKEN PIN. NUMERS WERE NOT CLE ## 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 = 'GO480G1D6' ORDER BY difficulty_date DESC ``` This list as a web page: https://openairdocs.org/engine/lycoming-go-480-g1d6/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.