# Service difficulty reports: Allison 250-C30G/2 A list on [Allison 250-C30G/2](https://openairdocs.org/engine/allison-250-c30g-2.md). Newest first. General aviation reporting is voluntary. - [SDR CA140521009](https://openairdocs.org/sdr/CA140521009.md): Fuel Control · malfunctioned · May 15, 2014 · Bell 230 · Fuel Control/Reciprocating Engines > (CAN) IN CRUISE FLIGHT NR 1 ENGINE PARTIAL POWER LOSS, 40 PERCENT TORQUE SPLIT FROM ENGINE NR 2. ENGINE NR 1 ROLLED BACK MANUALLY TO IDLE, ENGINE LIGHT OUT ILLUMINATED, THROTTLE MANUALLY ROLLED BACK UP, CONTINUED TO LAND WITH TORQUE SPLIT. GROUND RUN CARRIED - [SDR O842011F00000](https://openairdocs.org/sdr/O842011F00000.md): Valve · bypassing · Aug 8, 2011 · N830SF · Bell 230 · Engine (Turbine/Turboprop) > NR 1 ENGINE WAS LOW. TROUBLESHOT AND FOUND NR 1 OVERSPEED VALVE BYPASSING AIR. PART HAD BEEN INSTALLED FOR 115.4 HRS SINCE O/H. - [SDR O842010F00000](https://openairdocs.org/sdr/O842010F00000.md): Starter Gen · malfunctioned · Jul 28, 2010 · N880SF · Bell 230 · Starter-Generator > GENERATOR WOULD NOT GO ON-LINE AFTER ENGINE START FOR RETURN FLIGHT BACK TO HOME BASE FROM HELIPAD AFTER PATIENT DROP-OFF. - [SDR HEER117546](https://openairdocs.org/sdr/HEER117546.md): Swashplate · broken · Sep 23, 2007 · N14UH · Bell 230 · Main Rotor Mast/Swashplate > THE MECHANIC NOTICED THE CYCLIC LINK HAD COME IN CONTACT WITH THE INNER RING AND DURING HIS INVESTIGATION TO DETERMINE THE CAUSE OF THIS UNUSUAL CONDITION, HE FOUND SEVERAL PARTS TO BE EXCESSIVELY DAMAGED CAUSED BY A BROKEN BOLT 20-057-6-16D, TOTAL TIME 1688. - [SDR HEEA107326](https://openairdocs.org/sdr/HEEA107326.md): Engine · power loss · Sep 4, 2005 · N230H · Bell 230 · Engine (Turbine/Turboprop) > ON TAKEOFF, THE NR 2 ENGINE LOST POWER. PILOT PERFORMED SINGLE ENGINE LANDING. REPLACED ENGINE ASSEMBLY. - [SDR HEEA064949](https://openairdocs.org/sdr/HEEA064949.md): Fcu · failed · Nov 2, 1999 · N236X · Bell 230 · Fuel Control/Turbine Engines > AT 5,500 FEET DURING CRUISE, NR 1 ENGINE DECELERATED TO 68 PERCENT N1. RECOVERED AT 3,300 FEET, SLIGHT OSCILLATION ON LANDING. INSP OF FUEL CONTROL FOUND CATASTROPHIC DRIVE BEARING FAILURE. SPLIT UNIT AND DISCOVERED MAJOR DAMAGE TO INTERNAL DRIVE BODY PARTS - [SDR HEED064543](https://openairdocs.org/sdr/HEED064543.md): Seal · leaking · Apr 27, 1999 · N236X · Bell 230 · Turbine Engine Accessory Drive > MAG SEAL LEAKS. ORDERED REPLACEMENT. - [SDR HEED064545](https://openairdocs.org/sdr/HEED064545.md): Seal · leaking · Apr 27, 1999 · N236X · Bell 230 · Turbine Engine Accessory Drive > MAG SEAL LEAKS. ORDERED REPLACEMENT. - [SDR 99ZZZX1267](https://openairdocs.org/sdr/99ZZZX1267.md): Solenoid · failed · Nov 11, 1998 · N4UV · Bell 230 · Fuel Controlling System > SOLENOID WILL NOT ACTUATE. REMOVED AND REPLACED. - [SDR HEEA0012756](https://openairdocs.org/sdr/HEEA0012756.md): Filter · defective · Feb 2, 1998 · N230UN · Bell 230 · Turbine Engine Oil System > ENG OIL FILTER NO BYPASS INDICATION. - [SDR HEEA0010161](https://openairdocs.org/sdr/HEEA0010161.md): Fuel Control · malfunction · Jun 19, 1997 · N236X · Bell 230 · Fuel Control/Turbine Engines > FUEL CONTROL UNSTABLE IDLE, SLOW ACCEL. - [SDR HEEA968677](https://openairdocs.org/sdr/HEEA968677.md): Nozzle · defective · Dec 11, 1996 · N236X · Bell 230 · Fuel Injector Nozzle > FUEL NOZZLE NEEDS TO BE REPLACED, NOT ENOUGH THREADS TO ADD SHIMS. - [SDR HEEA967381](https://openairdocs.org/sdr/HEEA967381.md): Indicator · defective · Jun 5, 1996 · N230UN · Bell 230 · Engine Oil Indicating System > UPON POSTFLIGHT CHECK OF #1 ENGINE NOTED OIL FILTER BYPASS INDICATOR EXTENDED. REPLACED OIL FILTER WITH NO CHANGE. INDICATOR REPLACEMENT CORRECTED PROBLEM. REPLACED DISCREPANT PART. PERFORMED FUNCTIONAL TEST. INDICATOR FAILED OPERATIONAL TEST PRESSURE RANG - [SDR HEEA967297](https://openairdocs.org/sdr/HEEA967297.md): Governor · malfunction · May 31, 1996 · N230UN · Bell 230 · Turbine Governor > ERRATIC POWER SETTINGS (GOVERNOR WOULD NOT STAY WITHIN UPPER LIMITS) - [SDR HEEA967233](https://openairdocs.org/sdr/HEEA967233.md): Fuel Nozzle · defective · May 15, 1996 · N230UN · Bell 230 · Fuel Injector Nozzle > REMOVED FUEL NOZZLE DUE TO CAUSING HUNG STARTS AND DELAYED LIGHT OFF. UPON INSPECTION OF FUEL NOZZLE FOUND MODERATE STREAKS IN SPRAY PATTERN, FOUND EXCESSIVE CARBON BUILD UP BETWEEN INNER TIP AND TIP NUT UNDER MAGNIFICATION AFTER ACCUMULATING 8:05SINCE LAST C - [SDR HEEA967067](https://openairdocs.org/sdr/HEEA967067.md): Bleed Valve · defective · Apr 23, 1996 · N230UN · Bell 230 · Compressor Bleed Valve > BLEED VALVE CAUSING ENGINE SURGE DURING POWER CHECK AT 70% TORQUE SINGLE ENGINE. - [SDR HEEA966913](https://openairdocs.org/sdr/HEEA966913.md): Fuel Control · failed · Apr 2, 1996 · N230UN · Bell 230 · Fuel Control/Turbine Engines > FUEL CONTROL INVOLVED IN A HIGH SIDE GOVERNOR FAILURE AND ROTOR WENT TO 112%. - [SDR HEEA966914](https://openairdocs.org/sdr/HEEA966914.md): Governor · failed · Apr 2, 1996 · N230UN · Bell 230 · Turbine Governor > HIGH SIDE GOVERNOR FAILURE. - [SDR HEEA966803](https://openairdocs.org/sdr/HEEA966803.md): Actuator · defective · Feb 28, 1996 · N230UN · Bell 230 · Main Rotor Control > UNABLE TO BEEP DUAL ENGINE RPM UP OR DOWN. - [SDR HEEA956158](https://openairdocs.org/sdr/HEEA956158.md): Seal · oil leak · Nov 29, 1995 · Turbine Engine Accessory Drive > ENGINE REPAIRED DUE TO OIL LEAK AND 300 HOUR INSPECTION. UPON INSPECTION OF GEARBOX PARTS NOTED THE FOLLOWING: 1) OIL LEAKING FROM PTO MAG SEAL 2) EXCESSIVE WEAR ON SPACER. SEE MMIR #6159 FOR SPACER INFORMATION. - [SDR HEEA956159](https://openairdocs.org/sdr/HEEA956159.md): Spacer · worn · Nov 29, 1995 · Turbine Engine Accessory Drive > ENGINE REPAIRED DUE TO OIL LEAK AND 300 HOUR INSPECTION. UPON INSPECTION OF GEARBOX PARTS NOTED THE FOLLOWING: 1) OIL LEAKING FROM PTO MAG SEAL 2) EXCESSIVE WEAR ON SPACER. - [SDR HEED9558](https://openairdocs.org/sdr/HEED9558.md): Solenoid · inoperative · Apr 21, 1995 · N236X · Bell 230 · Fuel Controlling System > NR 1 ENGINE FLIGHT IDLE SOLENOID INOPERATIVE. ## 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 = '250C30G2' ORDER BY difficulty_date DESC ``` This list as a web page: https://openairdocs.org/engine/allison-250-c30g-2/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.