# Service difficulty reports: N3520T, cancelled Mar 6, 2017 A list on [N3520T, cancelled Mar 6, 2017](https://openairdocs.org/deregistered/N3520T-2017-03-06.md). Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model. Newest first. - [SDR HEEA065147](https://openairdocs.org/sdr/HEEA065147.md): Transmission · making metal · Nov 15, 1999 · N3520T · Bolkms BO105S · Main Rotor Gearbox > FOUND METAL IN TRANSMISSION. - [SDR HEEA065076](https://openairdocs.org/sdr/HEEA065076.md): Pump · leaking · Nov 11, 1999 · N3520T · Bolkms BO105S · Hydraulic Pump (Electric/Engine), Main > HYDRAULIC PUMP LEAKING. - [SDR HEEA065066](https://openairdocs.org/sdr/HEEA065066.md): Warning Box · failed · Nov 11, 1999 · N3520T · Bolkms BO105S · Rotor Drive Indicating System > NO FLASHING LIGHT. RPM WARNING LIGHT DOES NOT COME ON. - [SDR HEEA064920](https://openairdocs.org/sdr/HEEA064920.md): Carbon Seal · leaking · Nov 1, 1999 · N3520T · Bolkms BO105S · Turbine Engine Compressor Section > ASSEMBLY INSPECTION REVEALED CARBON SEAL LEAKED ON PRESSURE TEST. - [SDR HEEA060461](https://openairdocs.org/sdr/HEEA060461.md): Power Supply · failed · Jan 25, 1999 · N3520T · Bolkms BO105S · VHF Communications System > NO TRANSMIT LIGHT ON ROLL VHF WHEN KEYED. - [SDR HEEA0016730](https://openairdocs.org/sdr/HEEA0016730.md): Power Supply · failed · Nov 6, 1998 · N3520T · Bolkms BO105S · VHF Communications System > NO TRANSMIT LIGHT ON ROL VHF WHEN KEYED. - [SDR HEEA0016664](https://openairdocs.org/sdr/HEEA0016664.md): Transmitter · malfunctioned · Nov 5, 1998 · N3520T · Bolkms BO105S · Main Rotor Indicating System > TORQUE TRANSMISSION ERRATIC OPERATION AT INDICATOR IN-FLIGHT. - [SDR HEEA0016663](https://openairdocs.org/sdr/HEEA0016663.md): Indicator · malfunctioned · Nov 5, 1998 · N3520T · Bolkms BO105S · Main Rotor Indicating System > MAST MOMENT INDICATION HAS ERRATIC OPERATION AT INDICATOR IN-FLIGHT. - [SDR HEEA0016649](https://openairdocs.org/sdr/HEEA0016649.md): Grip Bearing · worn · Nov 5, 1998 · N3520T · Bolkms BO105S · Tail Rotor Head > TAIL ROTOR ASSEMBLY'S GRIP BEARING WORN. - [SDR HEEA0015723](https://openairdocs.org/sdr/HEEA0015723.md): Ammeter · damaged · Aug 20, 1998 · N3520T · Bolkms BO105S · DC Indicating System > AMMETER HAS INSULATOR CRACKED AND NEEDLE IS ERRATIC. - [SDR HEEA0015328](https://openairdocs.org/sdr/HEEA0015328.md): Transmitter · inaccurate · Jul 29, 1998 · N3520T · Bolkms BO105S · Main Rotor Indicating System > TORQUE TRANSMITTER GIVES ERRONEOUS READINGS. - [SDR HEEA0015327](https://openairdocs.org/sdr/HEEA0015327.md): Indicator · inaccurate · Jul 29, 1998 · N3520T · Bolkms BO105S · Main Rotor Indicating System > MAST MOMENT INDICATOR GIVES ERRONEOUS READINGS. - [SDR HEEA0014877](https://openairdocs.org/sdr/HEEA0014877.md): Transceiver · malfunctioned · Jun 22, 1998 · N3520T · Bolkms BO105S · VHF Communications System > NR 2 VHF POSITION TRANSMITS; WILL NOT RECEIVE. - [SDR HEEA0014532](https://openairdocs.org/sdr/HEEA0014532.md): Cartridge · low pressure · Jun 4, 1998 · N3520T · Bolkms BO105S · Fuel Boost Pump > BOOST PUMP HAS LOW PRESSURE. - [SDR HEEA0014531](https://openairdocs.org/sdr/HEEA0014531.md): Cartridge · malfunctioned · Jun 4, 1998 · N3520T · Bolkms BO105S · Fuel Boost Pump > BOOST PUMP DRAWING EXCESSIVE AMPERAGE. - [SDR HEEA0014529](https://openairdocs.org/sdr/HEEA0014529.md): Cartridge · malfunctioned · Jun 4, 1998 · N3520T · Bolkms BO105S · Fuel Boost Pump > BOOST PUMP DRAWING EXCESSIVE AMPERAGE. - [SDR HEEA0014486](https://openairdocs.org/sdr/HEEA0014486.md): Transmitter · erratic · Jun 2, 1998 · N3520T · Bolkms BO105S · Main Rotor Indicating System > MAST MOMENT TRANSMITTER, ERRATIC OPERATION. - [SDR HEEA0014485](https://openairdocs.org/sdr/HEEA0014485.md): Indicator · erratic · Jun 2, 1998 · N3520T · Bolkms BO105S · Main Rotor Indicating System > MAST MOMENT INDICATOR HAS ERRATIC OPERATION. - [SDR HEEA0014030](https://openairdocs.org/sdr/HEEA0014030.md): Warning Box · failed · Apr 22, 1998 · N3520T · Bolkms BO105S · Main Rotor Indicating System > INTERMITTENT LIGHT AND AUDIO AT 100% RPM. - [SDR HEEA0013568](https://openairdocs.org/sdr/HEEA0013568.md): Altimeter · malfunction · Mar 26, 1998 · N3520T · Bolkms BO105S · Altimeter, Barometric/Encoder > EXCESSIVE FRICTION ERROR AND ENCODER READS LOW. - [SDR HEEA0013532](https://openairdocs.org/sdr/HEEA0013532.md): Indicator · failed · Mar 26, 1998 · N3520T · Bolkms BO105S · Engine EGT/TIT Indicating System > EXH TEMP INDICATOR EXCESSIVE FRICTION AND CANNOT CALIBRATE. - [SDR HEEA0013018](https://openairdocs.org/sdr/HEEA0013018.md): Floor Cover · mis mfg · Feb 10, 1998 · N3520T · Bolkms BO105S · Fuselage Floor Panel > FORWARD EDGE OF PANEL DOES NOT HAVE REINFORCEMENT STRIP BONDED ON FOR INSTALLATION OF PANEL TO MAIN FLOOR PANEL. - [SDR HEEA0010765](https://openairdocs.org/sdr/HEEA0010765.md): Transducer · failed · Aug 19, 1997 · N3520T · Bolkms BO105S · Fuel Pressure Sensor > TRANSDUCER READS HIGH THROUGHOUT SCALE. - [SDR HEEA0010584](https://openairdocs.org/sdr/HEEA0010584.md): Tank · defective · Aug 6, 1997 · N3520T · Bolkms BO105S · Fuel Storage > SANDED FLANGES AND POSSIBLE WARPED BOOST PUMP FLANGE. SENT TO A/C TEAM, INC. FOR INSPECTION AND REPAIR. - [SDR HEEA0010247](https://openairdocs.org/sdr/HEEA0010247.md): Indicator · failed · Jun 25, 1997 · N3520T · Bolkms BO105S · Engine RPM Indicating System > TRIPLE TACH IMPROPER READING GAUGE STICKS ON START UP. ALL THREE NEEDLES INOPERATIVE. - [SDR HEEA0010156](https://openairdocs.org/sdr/HEEA0010156.md): P.T. Support · mis machined · Jun 17, 1997 · N3520T · Bolkms BO105S · Turbine Section > RECEIVING INSPECTION REVEALED: I.D. MACHINED UNDERSIZED ON P.T. SUPPORT #7 BEARING BORE. - [SDR HAIHEEA9739](https://openairdocs.org/sdr/HAIHEEA9739.md): Upper Housing · corrosion · Apr 30, 1997 · N3520T · Bolkms BO105S · Main Rotor Gearbox > CORROSION IN MOUNTING HOLES BEYOND BUSHING. - [SDR HAIHEEA9738](https://openairdocs.org/sdr/HAIHEEA9738.md): Center Case · worn · Apr 30, 1997 · N3520T · Bolkms BO105S · Tail Rotor Gearbox > CENTER CASE TAIL ROTOR BORE WORN. CHECK INDICATION ON LOWER MOUNTING FLANGE AS MARKED. - [SDR HEEA968730](https://openairdocs.org/sdr/HEEA968730.md): Transceiver · failed · Dec 13, 1996 · N3520T · Bolkms BO105S · VHF Communications System > TRANSCEIVER WEAK AND BROKEN UP SEVERAL TIMES DURING FLIGHT. - [SDR HEEA968580](https://openairdocs.org/sdr/HEEA968580.md): Clamp · weld failed · Nov 25, 1996 · N3520T · Bolkms BO105S · Engine Collector/Tailpipe/Nozzle > CLAMPS HAVE BROKEN SPOT WELDS AND ARE CRACKED. REMOVED PART AND INSTALLED SERVICEABLE PARTS. - [SDR HEEA968437](https://openairdocs.org/sdr/HEEA968437.md): Blade · cracked · Nov 6, 1996 · N3520T · Bolkms BO105S · Main Rotor Blades > BLADE NOSE & NECK SHELL CRACKED AND SEPARATED. - [SDR HEEA968436](https://openairdocs.org/sdr/HEEA968436.md): Blade · cracked · Nov 6, 1996 · N3520T · Bolkms BO105S · Main Rotor Blades > BLADE NOSE AND NECK SHELL CRACKED AND SEPARATED. - [SDR HEEA968435](https://openairdocs.org/sdr/HEEA968435.md): Blade · cracked · Nov 6, 1996 · N3520T · Bolkms BO105S · Main Rotor Blades > BLADE HAS NOSE AND NECK SHELLS CRACKED WITH SEPARATION. SUSPECTED CRACKED FILLER NEAR MOLD LINE ON LOWER SURFACE. - [SDR HEEA968434](https://openairdocs.org/sdr/HEEA968434.md): Blade · cracked · Nov 4, 1996 · N3520T · Bolkms BO105S · Main Rotor Blades > BLADE HAS NOSE AND NECK SHELL CRACKED AND SEPARATED. INBOARD LEADING STRIP SEPARATED BEYOND LIMITS. ## 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 = 'N3520T' AND deregistration_id = 'N3520T-2017-03-06' ORDER BY difficulty_date DESC ``` This list as a web page: https://openairdocs.org/deregistered/N3520T-2017-03-06/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.