# Service difficulty reports: Sikorsky S-58ET A list on [Sikorsky S-58ET](https://openairdocs.org/model/sikorsky-s-58et.md). Newest first. General aviation reporting is voluntary. - [SDR CA031110007](https://openairdocs.org/sdr/CA031110007.md): Blade · broken · Sep 1, 2003 · Skrsky S58ET · Turbine Section > (CAN) THE AIRCRAFT WAS ENGAGED IN FIRE FIGHTING DUTIES WHEN ENGINE VIBRATION WAS FELT. ALL AIRCRAFT SYSTEMS WERE IN NORMAL, OPERATIONAL AND PERFORMANCE LIMITS. SUBSEQUENT TROUBLESHOOTING OF THE POWER SECTION WAS COMPLETED AND THE POWER SECTION WAS REMOVED FR - [SDR CA031110006](https://openairdocs.org/sdr/CA031110006.md): Piston Rod · severed · Aug 3, 2003 · Skrsky S58ET · Main Rotor Head > (CAN) ON AIRCRAFT APPROACH FOR LANDING, AIRFRAME VIBRATION WAS FELT. UPON LANDING AIRCRAFT WAS GROUND ROCKING. REDUCTION OF ENGINE THROTTLES INCREASED GROUND ROCK AND AIRFRAME VIBRATION. THROTTLES SHUT-OFF AND ROTOR BRAKE APPLIED, UPON BRAKING M/R BLADE SWEP - [SDR CA000128011](https://openairdocs.org/sdr/CA000128011.md): Hinge · cracked · Jan 7, 2000 · Skrsky S58ET · Rotorcraft Tail Boom > (CAN) SMALL CRACK FOUND ON UPPER LT PYLON HINGE ATTACHMENT. NO OBVIOUS CAUSE. - [SDR AU000128011](https://openairdocs.org/sdr/AU000128011.md): Hinge · cracked · Jan 7, 2000 · Skrsky S58ET · Rotorcraft Tail Boom > (AU) SMALL CRACK FOUND ON UPPER LT PYLON HINGE ATTACHMENT. NO OBVIOUS CAUSE. - [SDR CA990817020](https://openairdocs.org/sdr/CA990817020.md): Hub · cracked · Aug 9, 1999 · Skrsky S58ET · Tail Rotor Head > (CAN) T/R HUB WAS REMOVED AND DISASSEMBLED IN ORDER TO COMPLY WITH SB. DURING OVERHAUL, AN NDT INSPECTION REVEALED A CRACK IN THE RADIUS OF THE MOUNTING FLANGE (INBD SIDE). IT IS THOUGHT THAT A FAULTY CASTING MAY HAVE CAUSED THE CRACK. - [SDR 98ZZZX2585](https://openairdocs.org/sdr/98ZZZX2585.md): Oil Pump · jammed · Jun 16, 1998 · N4247V · Skrsky S58ET · Main Rotor Gearbox > LOW OIL PRESSURE LIGHT ILLUMINATED IN FLIGHT. A PRECAUTIONARY LANDING WAS MADE. ON SITE INSPECTION DETERMINED THAT A PIECE OF COTTER PIN HAD BROKEN OFF AND WAS CAUGHT IN THE PUMP. THE BROKEN COTTER PIN AND OIL PUMP WERE REPLACED. UPON RUN-UP, SYSTEM CHECKE - [SDR CA971222001](https://openairdocs.org/sdr/CA971222001.md): Fittng · broken · Nov 5, 1997 · Skrsky S58ET · Main Rotor Transmission Mount > (CAN) AIRCRAFT ON LOGGING MISSION, AFTER LAST FLIGHT AME FOUND THAT THE LUG OF THE PYLON FITTING HAD BROKEN OFF. - [SDR CA971125003](https://openairdocs.org/sdr/CA971125003.md): Blade · debonding · Oct 21, 1997 · Skrsky S58ET · Main Rotor Blades > (CAN) DEBONDING OF POCKET FROM MAIN ROTOR BLADE. A SECTION 8 INCHES BY 8 INCHES CAME OFF. - [SDR NYBA9713](https://openairdocs.org/sdr/NYBA9713.md): Blade · defective · Mar 18, 1997 · N26567 · Skrsky S58ET · Main Rotor Blades > RED BIM INDICATION REPLACED MAIN ROTOR BLADE - [SDR NYBA9712](https://openairdocs.org/sdr/NYBA9712.md): Ring Gear · making metal · Mar 18, 1997 · N129NH · Skrsky S58ET · Main Rotor Gearbox > GEARBOX RING GEAR CAUSING METAL GENERATION. REPLACED - [SDR CA960826102](https://openairdocs.org/sdr/CA960826102.md): Bolt · cracked · Aug 14, 1996 · Skrsky S58ET · Main Rotor Gearbox > (CAN) WHILE COMPLYING WITH AD 95-26-08, MPI INSPECTION OF THE MAIN ROTOR SHAFT, THESE BOLTS WERE ALSO MPI'D REVEALING CRACKS UNDER THE HEAD IN 4 OUT OF 5 BOLTS. SUGGEST MPI INSPECTION OF THE BOLTS BE DONE TO COINCIDE WITH THE SHAFT INSPECITON. - [SDR 96ZZZX4781](https://openairdocs.org/sdr/96ZZZX4781.md): Engine · stalls · Aug 7, 1996 · N129NH · Skrsky S58ET · Engine (Turbine/Turboprop) > DURING HIGH POWER DEMANDS, COMPRESSOR STALLS NOTED BY PILOT. DURING ACCELERATION CHECKS ON GROUND, MECHANIC NOTED COMPRESSOR STALLS. NYH BELIEVES THE COMPRESSOR STALLS ARE DUE TO DAMAGED 1ST STAGE COMPRESSOR BLADES (FOD). POWER SECTION REMOVED IAW S58T MM A - [SDR CA960826105](https://openairdocs.org/sdr/CA960826105.md): Transmission · making metal · Jul 3, 1996 · Skrsky S58ET · Main Rotor Gearbox > (CAN) MAIN GEARBOX REMOVED DUE TO METAL FOUND IN OIL FILTER - [SDR 96ZZZX2195](https://openairdocs.org/sdr/96ZZZX2195.md): Blade · leakage · Apr 2, 1996 · N26567 · Skrsky S58ET · Main Rotor Blades > DURING A 3-HOUR BIM CHECK, PILOT NOTED A RED BIM INDICATION. DURING A PRELIMINARY INSPECTION, LEAKAGE HAS BEEN NOTED TO BE EMANATING FROM THE SEAM BETWEEN POCKETS 19 AND 18. REPLACED BLADE IAW SIKORSKY S-58T MM. - [SDR 95ZZZX7056](https://openairdocs.org/sdr/95ZZZX7056.md): Drive Assy · debonded · Dec 3, 1995 · N26567 · Skrsky S58ET · Tail Rotor Drive Shaft > DURING A DAILY INSPECTION, A MECHANIC NOTICED THE BEARING SLEEVE WAS SHOWING SIGNS OF DEBONDING FROM THE SHAFT. NO OTHER DEFECTS WERE NOTED WITH THE SHAFT. REMOVED AND REPLACED NR 6 TAIL ROTOR DRIVE SHAFT ASSY WITH A SERVICEABLE UNIT. PERFORMED FLIGHT OPS C - [SDR 95ZZZX6201](https://openairdocs.org/sdr/95ZZZX6201.md): Coupling · defective · Oct 15, 1995 · N47781 · Skrsky S58ET · Tail Rotor Drive Shaft > DURING A SAFETY INSPECTION, A MECHANIC NOTED NUMEROUS RUBBER SEGMENTS (CHUNKS) MISSING FROM EVERY OTHER SEGMENT ON THIS NEW FAA/PMA PART. THIS COUPLING WAS IN THE NR 8 POSITION DIRECTLY UNDER THE TAIL ROTOR GEARBOX ATTACHED TO THE TAIL ROTOR GEARBOX INPUT. S - [SDR 95ZZZX6202](https://openairdocs.org/sdr/95ZZZX6202.md): Coupling · debonded · Oct 12, 1995 · N47781 · Skrsky S58ET · Tail Rotor Drive Shaft > DURING A 1,750 HOUR INSPECTION, THE MECHANIC NOTED THAT EVERY DOUBLE SEGMENT, THE RUBBER WAS DEBONDED BEYOND LIMITS IAW S-58T MMS. THIS COUPLING WAS IN THE NR 5 POSITION. SUBMITTER STATED INADEQUATE RUBBER BONDING ON THIS NEW FAA-PMA. REPLACED FLEX COUPLING - [SDR 95ZZZX5463](https://openairdocs.org/sdr/95ZZZX5463.md): Top Case · cracked · Sep 1, 1995 · N26567 · Skrsky S58ET · Main Rotor Gearbox > MAIN GEARBOX TOP CASE CRACKED AT FORWARD SUPPORT TUBE ATTACHMENT POINT. REPLACED MAIN GEARBOX TOP CASE PN S1635-20211 WITH NEW. - [SDR 95ZZZX2331](https://openairdocs.org/sdr/95ZZZX2331.md): Coupling · separation · Apr 7, 1995 · N26567 · Skrsky S58ET · Engine/Transmission Coupling > DURING 1750-HOUR INSPECTION, MECHANIC NOTED NUMEROUS RUBBER SEGMENTS FOUND SEPARATED BEYOND LIMITS IAW WITH S-58T MM. REPLACED FLEX COUPLING IAW S-58T MM. - [SDR 95ZZZX2330](https://openairdocs.org/sdr/95ZZZX2330.md): Coupling · separation · Apr 7, 1995 · N26567 · Skrsky S58ET · Engine/Transmission Coupling > DURING 1750-HOUR INSPECTION, MECHANIC NOTED NUMEROUS RUBBER SEGMENTS WERE FOUND SEPARATED BEYOND LIMITS IAW S-58T MM. REPLACED FLEX COUPLING IAW WITH S-58T MM. - [SDR 95ZZZX2083](https://openairdocs.org/sdr/95ZZZX2083.md): Gearbox Mount · lug missing · Mar 27, 1995 · N26567 · Skrsky S58ET · Main Rotor Gearbox > WHILE REPLACING THE INTERMEDIATE GEARBOX FOR A SCHEDULED OVERHAUL, NOTED GEARBOX AIRFRAME MOUNT MISSING A BOLT LUG EAR. NO APPARENT CAUSE CAN BE ATTRIBUTED TO THIS FAILURE. REPLACED GEARBOX AIRFRAME MOUNT PN S1620-64128-3 IAW S-58T MM. ## 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 = 'S58ET' ORDER BY difficulty_date DESC ``` This list as a web page: https://openairdocs.org/model/sikorsky-s-58et/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.