# Service difficulty reports: N124EH A list on [N124EH](https://openairdocs.org/aircraft/N124EH.md). Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model. Newest first. - [SDR ERAA097497](https://openairdocs.org/sdr/ERAA097497.md): Cover · misoverhauled · Sep 14, 2004 · N124EH · Bolkms BO105S · Turbine Section > SUMP COVER AIR HOLE IS BLOCKED. RETURNING ON ERA REPAIR ORDER NR RW-900461 REQUESTING WARRANTY REPAIR. - [SDR ERAA098178](https://openairdocs.org/sdr/ERAA098178.md): Governor · malfunctioned · Aug 19, 2004 · N124EH · Bolkms BO105S · Turbine Governor > GOVERNOR DROPS OUT OF SERVICE LIMITS. COMPONENTS WORN INTERNALLY. REPAIRED AND TESTED IAW HONEYWELL OHM FORM 15-1095A. - [SDR ERAA097536](https://openairdocs.org/sdr/ERAA097536.md): Guide · inoperative · Dec 30, 2003 · N124EH · Bolkms BO105S · Hydraulic System, Main > GUIDE ASSY INOPERABLE ACTION TAKEN: DISASSEMBLED, CLEANED, INSPECTED, INSTALLED NEW SOCKET, POTTED AND TESTED. INSPETED AND REPAIRED IAW MBB BO105 REM 405. - [SDR ERAA097535](https://openairdocs.org/sdr/ERAA097535.md): Guide · inoperative · Dec 30, 2003 · N124EH · Bolkms BO105S · Hydraulic System, Main > GUIDE ASSY IS INOPERABLE. FOUND BROKEN SOCKET AND SWITCHES. 2 SCREWS CORRODED. DISASSEMBLED, CLEANED, INSPECTED, INSTALLED NEW SOCKET, SWITCHES, SCREWS AND TESTED. INSPECTED AND REPAIRED IAW MBB BO105 REM 405. - [SDR ERAA094451](https://openairdocs.org/sdr/ERAA094451.md): Shaft · scored · Nov 16, 2003 · N124EH · Bolkms BO105S · Tail Rotor Gearbox > TAILROTOR SHAFTS SCORED. SENT FOR REPAIR. SHAFT BEYOND LIMITS. SCRAPPED IAW BO-105 MM CHAPTER 33 FIG 33-12 ACTION TAKEN: REMOVED AND SCRAPPED TAIL ROTOR SHAFT 5/1454. INSTALLED NEW SHAFT 5/2185 IAW BO-105 MM CHAPTER 33 PARA 33-22. REAMED BUSHINGS AS REQU - [SDR ERAA085148](https://openairdocs.org/sdr/ERAA085148.md): Wire · broken · Feb 13, 2003 · N124EH · Bolkms BO105S · Hydraulic Power System Wiring > GUIDE ASSY WILL NOT RESET. FOUND BROKEN WIRE. DISASSEMBLED, CLEANED, INSPECTED, INSTALLED NEW SOCKET AND POTTED AND TESTED. INSTALLED NEW SOCKET AND FLAT SPRING. REPAIRED IAW MBB-BO-105 REM 405. - [SDR ERAA085146](https://openairdocs.org/sdr/ERAA085146.md): Wire · broken · Feb 13, 2003 · N124EH · Bolkms BO105S · Hydraulic Power System Wiring > GUIDE ASSY HAS BROKEN WIRE. DISASSEMBLED, CLEANED, INSPECTED, INSTALLED NEW SOCKET AND TESTED & POTTED. INSTALLED NEW FLAT SPRING & SLIDE BLOCK. REPAIRED IAW M BB-BO-105-REM 405. - [SDR ERAA082716](https://openairdocs.org/sdr/ERAA082716.md): Governor · malfunctioned · Nov 20, 2002 · N124EH · Bolkms BO105S · Fuel Controlling System > UNABLE TO ADJUST FOR TORQUE SPLITS. PC, PY FITTINGS LOOSE. LEVER CAM WORN, O LEVER. REPLACED WORN PARTS FOUND DURING INSPECTIN IAW CMM 73-20-25. FUNCTIONALLY TESTED 10-29-02. - [SDR ERAA081161](https://openairdocs.org/sdr/ERAA081161.md): Fuel Control · malfunctioned · Sep 26, 2002 · N124EH · Bolkms BO105S · Fuel Control/Turbine Engines > NR 2 ENGINE HANGS AT 50 PERCENT N1 FOR 3-5 SECONDS THEN RAPIDLY ACCELS TO 537 DEGREES N1. REPLACEMENT FIXED PROBLEM. FUEL CONTROL OVERHAULED, CLOSE TO TX REQUIRES MODS, CEB'S. OVERHAULED IAW HONEYWELL OHM FOR 15-602E. - [SDR ERAA080339](https://openairdocs.org/sdr/ERAA080339.md): Bearing · making metal · Jun 11, 2002 · N124EH · Bolkms BO105S · Engine (Turbine/Turboprop) > ENGINE MAKING METAL. INITIAL INSPECTION FOUND COMPRESSOR ATTACHMENT HARDWARE LOOSE. 2 1/2 BEARING MAKING METAL. ACTION TAKEN: INSTALLED NEW 2 1/2 BEARING AND PTO GEAR. COMPLIED WITH CEB-A-1351 REPLACE OIL TUBE. - [SDR ERAA080338](https://openairdocs.org/sdr/ERAA080338.md): Shaft · corroded · Jun 11, 2002 · N124EH · Bolkms BO105S · Turbine Engine Reduction Gear > ENGINE MAKING METAL. FOUND GEARSHAFT TEETH DAMAGED GEARBOX HOUSING CORRODED. ACTION TAKEN: INSTALLED NEW GEARSHAFT & OVERHAULED GEARBOX. - [SDR ERAA080337](https://openairdocs.org/sdr/ERAA080337.md): Fuel Control · out of adjust · Jun 11, 2002 · N124EH · Bolkms BO105S · Fuel Control/Turbine Engines > FCU OUT OF CALIBRATION. METERING VALVE FUEL FLOW SETTING FOUND LOW - [SDR ERAA077295](https://openairdocs.org/sdr/ERAA077295.md): Gearshaft · worn · Nov 16, 2001 · N124EH · Bolkms BO105S · Starter-Generator > ENGINE IS MAKING METAL.. STARTER GENERATOR GEARSHAFT IS WORN. ACTION TAKEN: INSTALLED NEW GEARSHAFT AND BEARINGS. COMPLIED WITH CEB A-1374 PRESSURE PROBE INSPECTION. - [SDR ERAA065950](https://openairdocs.org/sdr/ERAA065950.md): Combustion Case · misoverhauled · Jan 10, 2000 · N124EH · Bolkms BO105S · Turbine Engine Combustion Section > COMBUSTION CASE REPAIRED AND RETURNED WITH AIR TUBE BOSS RETAINING RING NOT BEING MACHINED. COULD NOT BE INSTALLED ON AIRCRAFT. - [SDR ERAA96284](https://openairdocs.org/sdr/ERAA96284.md): Scroll · damaged · Jul 19, 1996 · N124EH · Bolkms BO105S · Turbine Engine Compressor Section > SCROLL OVERHAULED 6-13-96 AND HAS THREAD DAMAGE TO STUD AS MARKED. - [SDR ERAA96281](https://openairdocs.org/sdr/ERAA96281.md): Gear · pitted · Jul 16, 1996 · N124EH · Bolkms BO105S · Turbine Engine Accessory Drive > FUEL CONTROL/OIL PUMP GEAR WAS O/H AND RETURNED TO ERA 7/10/96 RECEIVED BACK WITH PITS IN GEAR TEETH. - [SDR ERAA96278](https://openairdocs.org/sdr/ERAA96278.md): Vane Assy · failed · Jul 15, 1996 · N124EH · Bolkms BO105S · Turbine Section > VANE ASSY SENT FOR OVERHAUL ON STANDARD AERO WORK ORDER L127225 2-9-96. VANE ASSY HAS -0- TSO AND STUB BROKE OFF DURING INSTALLATION. - [SDR ERAA96246](https://openairdocs.org/sdr/ERAA96246.md): Sump Cover · defective · Jun 14, 1996 · N124EH · Bolkms BO105S · Turbine Section > PART SENT FOR OVERHAUL AND RETURNED TO ERA 9-18-95. LARGE U-RING SEALING SURFACE NOT TRUE. U-RING WILL NOT CRUSH EVENLY AND LEAKS. - [SDR ERAA96244](https://openairdocs.org/sdr/ERAA96244.md): Exhaust Collecto · mis repair · Jun 10, 1996 · N124EH · Bolkms BO105S · Turbine Section > EXHAUST COLLECTOR SENT FOR OVERHAUL 3-18-96 AND RETURNED WITH 4TH NOZZLE TIGHT FIT INTO COLLECTOR. - [SDR ERAA9589](https://openairdocs.org/sdr/ERAA9589.md): Nozzle · delaminated · Jun 14, 1995 · N124EH · Bolkms BO105S · Turbine Section > SENT TO D/AIRMOTIVE ON ERA P.O. G108376 FOR OVERHAUL ON D/A WORK ORDER C67743 4/24/95. NOZZLE HAS -0- T.S.O. AND PORTION OF METALIZED AREA OF #4 BLADE TIP PATH DELAMINATED DURING MACHINING. - [SDR ERAA9582](https://openairdocs.org/sdr/ERAA9582.md): Nozzle · defective · Jun 6, 1995 · N124EH · Bolkms BO105S · Turbine Section > NOZZLE WAS SENT TO DALLAS AIRMOTIVE FOR OVERHAUL ON ERA P.O. G108745, D/AIRMOTIVE W/O C67772. PART HAS -0- HRS TSO AND.007 -.009 SEAL RUNOUT ALL TANG LOCATIONS, WITH NOZZLE IN FIXTURE OR PT SUPPORT. - [SDR ERAA9579](https://openairdocs.org/sdr/ERAA9579.md): Coupling · defective · Jun 5, 1995 · N124EH · Bolkms BO105S · Turbine Section > SHAFT INDENTIONS BETWEEN SEAL GROOVES AND BELOW SPLINE END (NOT SCALLOPED END) - OD OF SHAFT AT THESE POINTS DIFFER. 1.093" AND 1.104". - [SDR ERAA9577](https://openairdocs.org/sdr/ERAA9577.md): Inner Shaft · pitted · May 17, 1995 · N124EH · Bolkms BO105S · Turbine Section > NEW INNER SHAFT THAT HAS PITS ON BEARING RACE. ## 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 n_number = 'N124EH' AND registry_match = 'registration' ORDER BY difficulty_date DESC ``` This list as a web page: https://openairdocs.org/aircraft/N124EH/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.