# Service difficulty reports: Bell 47G-5A A list on [Bell 47G-5A](https://openairdocs.org/model/bell-47g-5a.md). Newest first. General aviation reporting is voluntary. - [SDR 2005FA0001075](https://openairdocs.org/sdr/2005FA0001075.md): Bushing · worn · Jul 29, 2005 · N715BH · Bell 47G5A · Reciprocating Engine Power Section > MAGNETO IDLER GEAR SHAFT BROKE, THE BREAK WAS CAUSED BY A WORN BUSHING ON THE GEAR/SHAFT P/N'S 76091 & 76283 THAT DRIVES IT. THIS IS THE SECOND TIME THIS SHAFT BROKE. TOTAL TIME SINCE OVERHAUL 230 HOURS. - [SDR GBHA0507001](https://openairdocs.org/sdr/GBHA0507001.md): Idler Gear · broken · Jul 12, 2005 · N715BH · Bell 47G5A · Magneto/Distributor > MAGNETO DRIVE IDLER GEAR SHAFT FAILED CAUSING BOTH MAGNETOS TO BECOME INOPERATIVE AND THE ENGINE FAILED. THE FAILURE APPEARED TO ORIGINATE AT THE OIL HOLE. TOTAL TIME ON THE ENGINE WAS 4600 HOURS AND TOTAL TIME ON THE PART PROBABLY WAS 4600 HOURS AND THE ENGIN - [SDR AUS20040185](https://openairdocs.org/sdr/AUS20040185.md): Clamp · cracked · Mar 14, 2004 · Bell 47G5A · Main Rotor Head > (AUS) MAIN ROTOR STABILIZER BAR CLAMP CRACKED. - [SDR AUS20021416](https://openairdocs.org/sdr/AUS20021416.md): Valve · separated · Dec 10, 2002 · Bell 47G5A · Aircraft Fuel Distribution System > (AUS) AIRCRAFT SUFFERED INFLIGHT POWER LOSS. INVESTIGATION FOUND LH FUEL TANK CRASHWORTHY SYSTEM BREAKAWAY FUEL VALVE BEGINNING TOSEPARATE WHICH RESTRICTED FUEL FLOW FROM THE LH TANK. SUSPECT CAUSED BY UNKNOWN PERSON STANDING ON VALVE DURING MAINTENANCE ORPREF - [SDR AUS20021053](https://openairdocs.org/sdr/AUS20021053.md): Crankshaft · cracked · Sep 18, 2002 · Bell 47G5A · Reciprocating Engine Power Section > (AUS) CRANKSHAFT CRACKED. CRACK RAN THROUGH THE OIL GALLERY, ACROSS THE THRUST FACE AND THROUGH THE OPPOSITE OIL GALLERY. CRACK EXTENDS THROUGH ALMOST 60% OF THE CIRCUMFERENCE OF BEARING JOURNALSURFACE. - [SDR AU010281](https://openairdocs.org/sdr/AU010281.md): Grip · cracked · Mar 22, 2001 · Bell 47G5A · Main Rotor Head > (AUS) MAIN ROTOR GRIP CRACKED IN SECOND, THIRD AND FOURTH THREADS. FOUND DURING EDDY CURRENT INSPECTION. X-RAY INSPECTION RESULTSWERE INCONCLUSIVE. - [SDR AU000165](https://openairdocs.org/sdr/AU000165.md): Longeron · cracked · Mar 28, 2000 · Bell 47G5A · Fuselage Main, Longeron/Stringer > (AUS) FUSELAGE LOWER LONGERON CRACKED. FOUND DURING X-RAY INSPECTION IAW AD/BELL47/62 AMDT2. - [SDR AU981525](https://openairdocs.org/sdr/AU981525.md): Drive · stripped · Nov 3, 1998 · Bell 47G5A · Main Rotor Gearbox > (AUS) MAIN TRANSMISSION FAN PULLEY DRIVE STRIPPED. SUSPECT INCORRECTLY TORQUED AT LAST MAINTENANCE CHECK. - [SDR AU981524](https://openairdocs.org/sdr/AU981524.md): Shaft · worn · Nov 3, 1998 · Bell 47G5A · Rotorcraft Cooling Fan System > (AUS) MAIN TRANSMISSION FAN PULLEY ASSEMBLY GEARSHAFT SPLINES WORN. SEE OPERATOR CONTROL NR AU981525 FOR ADDITIONAL INFORMATION. - [SDR 96ZZZX2921](https://openairdocs.org/sdr/96ZZZX2921.md): Mount · cracked · May 14, 1996 · N715BH · Bell 47G5A · Engine Mount Section > DURING 100-HOUR ANNUAL INSPECTION, CRACK NOTED AT FORWARD TRUNNION CLUSTER. AREA WAS STRIPPED OF PAINT AND DYE CHECKED. CRACK CONFIRMED. A BULLETIN WAS ISSUED BY THE MFG 3-7-96. THIS WAS A PMA'D PART. - [SDR 96ZZZX2301](https://openairdocs.org/sdr/96ZZZX2301.md): Bearing · making metal · Mar 28, 1996 · N615BH · Bell 47G5A · Main Rotor Gearbox > UPON FINDING METAL IN OIL SCREEN, TRANSMISSION WAS REMOVED AND DISASSEMBLED. LOWER SUN GEAR BEARING WAS FOUND TO BE MAKING METAL. SUBMITTER STATES THIS HAS BEEN THE SIXTH FAILURE IN TRANSMISSION. - [SDR 96ZZZX2246](https://openairdocs.org/sdr/96ZZZX2246.md): Gear · failed · Mar 1, 1996 · Bell 47G5A · Reciprocating Engine Rear Section > ENGINE ABRUPTLY QUIT RUNNING WHILE ON GROUND. INVESTIGATION REVEALED ASSESSORY DRIVE GEAR, WHICH IS A TWO-PIECE GEAR ASSEMBLED AT THE FACTORY, HAD FAILED. THE 6 BOLTS THAT ATTACH THE 2 PIECES HAD SHEARED & THE 3 DOWELS THAT SHOULD BE A PRESS FIT IN BOTH PIEC - [SDR 96ZZZX266](https://openairdocs.org/sdr/96ZZZX266.md): Tube · rusted · Dec 12, 1995 · N4348P · Bell 47G5A · Rotorcraft Flight Control > DURING 1,200-HOUR INSPECTION OF INTERIOR OF FLIGHT CONTROL TUBES, 2 TUBES HAD INTERNAL RUST. REPLACED TUBES. (AD 74-07-01.) SUBMITTER STATED THIS INSPECTION INTERVAL IS ADEQUATE AND IT COINCIDES WITH THE AIRFRAME OVERHAUL CYCLE. BELL SB 47-11-73-1. - [SDR 96ZZZX265](https://openairdocs.org/sdr/96ZZZX265.md): Tube · rusted · Dec 12, 1995 · N4348P · Bell 47G5A · Rotorcraft Flight Control > DURING 1,200-HOUR INSPECTION OF INTERIOR OF FLIGHT CONTROL TUBES, 2 TUBES HAD INTERNAL RUST. REPLACED TUBES. (AD 74-07-01.) SUBMITTER STATED THIS INSPECTION INTERVAL IS ADEQUATE AND IT COINCIDES WITH THE AIRFRAME OVERHAUL CYCLE. BELL SB 47-11-73-1. - [SDR 96ZZZX101](https://openairdocs.org/sdr/96ZZZX101.md): Spider Set · defective · Dec 1, 1995 · N4348P · Bell 47G5A · Main Rotor Gearbox > RECEIVED SPIDER SET FROM BELL AS A NEW REPLACEMENT PART. PLANETARY PIN HOLES ARE ROUGH AND HAVE TOO MUCH UNEVEN CHAMFER. - [SDR 95ZZZX6322](https://openairdocs.org/sdr/95ZZZX6322.md): Spider Set · mismanufactured · Oct 30, 1995 · N4348P · Bell 47G5A · Main Rotor Gearbox > RECEIVED SPIDER GEAR SET AS NEW REPLACEMENT PART FROM BELL. DURING RECEIVING INSPECTION, NOTED PINION PIN HOLE FINISH VERY ROUGH AND CHAMFER ROUGH AND ECCENTRIC. ALSO, TOO DEEP IN SPOTS. RETURNED TO BELL FOR REPLACEMENT. - [SDR 95ZZZX6241](https://openairdocs.org/sdr/95ZZZX6241.md): Bearing · failed · Oct 17, 1995 · N615BH · Bell 47G5A · Main Rotor Gearbox > OPERATOR REPORTS 5 TRANSMISSION BEARING FAILURES WITHIN THE LAST YEAR. SUSPECT IMPROPERLY MANUFACTURED BEARINGS, AND, AS A RESULT, IMPROPER INSTALLATION. AN ACCIDENT PREVENTION RECOMMENDATION WAS SUBMITTED TO AAI-200. - [SDR 95ZZZX6195](https://openairdocs.org/sdr/95ZZZX6195.md): Mount · improper weld · Oct 16, 1995 · N4348P · Bell 47G5A · Engine Mount Section > ENGINE MOUNT PAINT STRIPPED AND CLEANED FOR MAGNAFLUX TO PERFORM 1,200-HOUR INSPECTION. WELD JOINING TUBE TO LT MOUNT FITTING INCOMPLETE (MISSING.50 INCH OF WELD). REPAIRED BY WELDING. - [SDR 95ZZZX6086](https://openairdocs.org/sdr/95ZZZX6086.md): Bearing · making metal · Jul 12, 1995 · N615BH · Bell 47G5A · Main Rotor Gearbox > UPON FINDING METAL IN OIL SCREEN, TEAR DOWN INSPECTION OF MAIN TRANSMISSION WAS PERFORMED. LOWER SUNGEAR BEARING WAS FOUND TO BE THE CAUSE OF THE METAL CONTAMINATION. THIS HAS BEEN THE FIFTH BEARING FAILURE. EACH BEARING HAS HAD LESS THAN 200 HOURS TOTAL TI ## 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 = '47G5A' ORDER BY difficulty_date DESC ``` This list as a web page: https://openairdocs.org/model/bell-47g-5a/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.