# Service difficulty reports: N404PH A list on [N404PH](https://openairdocs.org/aircraft/N404PH.md). Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model. Newest first. Page 1 of 3 · 148 reports - [SDR HEER20160728925](https://openairdocs.org/sdr/HEER20160728925.md): Bearing · spalled · Jul 28, 2016 · N404PH · Bell 407 · Turbine Section > NR 5 BEARING SPALLING ON OUTER RACE SPLIT. INSTALLED A NEW BEARING. - [SDR HEER20150714422](https://openairdocs.org/sdr/HEER20150714422.md): Bearing · spalled · Jul 14, 2015 · N404PH · Bell 407 · Turbine Section > ENGINE REMOVED 6-30-15 DUE TO METAL IN OIL. FOUND SPALLING AT OUTER RACE SPLIT & WORN POCKET AT SEPARATOR ON NR 5 BEARING. INSTALLED NEW NR 5 BEARING. PART WILL BE RETURNED FOR FURTHER EVALUATION. - [SDR HEER20141029325](https://openairdocs.org/sdr/HEER20141029325.md): Bearing · spalled · Oct 29, 2014 · N404PH · Bell 407 · Turbine Section > ENGINE WAS REMOVED 10-24-14 DUE TO METAL IN OIL. NR 5 BEARING EXHIBITED HEAVY SPALLING ON BALLS. PART WILL BE RETURNED TO MFG FOR FURTHER EVALUATION. - [SDR HEEA126913](https://openairdocs.org/sdr/HEEA126913.md): Longeron · cracked · Dec 12, 2009 · N404PH · Bell 407 · Rotorcraft Tail Boom > LONGERON CRACKED IN HALF AT JUNCTION OF BULKHEAD FWD OF FUSELAGE TAILBOOM RING. REMOVED DAMAGED LONGERON AND REPLACED WITH NEW LONGERON USING 206-031-314-219B. - [SDR HEEA087855](https://openairdocs.org/sdr/HEEA087855.md): Bearing · failed · Jun 17, 2003 · N404PH · Bell 407 · Tail Rotor Drive Shaft > UNABLE TO BALANCE. REPLACED BEARING 407-340-339-107, S/N ZV16525 DUE TO SCRAPPED WITH HANGER; AFT HOUSING 407-040-322-101, S/N 74613-130 DUE TO BOLT BORE WORN OUT. REPAIRED. - [SDR HEEA087842](https://openairdocs.org/sdr/HEEA087842.md): Pin · worn · Jun 13, 2003 · N404PH · Bell 407 · Main Rotor Mast/Swashplate > PIN WORN AND STUCK IN GIMBAL RING. REPLACED WITH SERVICEABLE PART. - [SDR HEEA087841](https://openairdocs.org/sdr/HEEA087841.md): Bushing · worn · Jun 13, 2003 · N404PH · Bell 407 · Main Rotor Mast/Swashplate > MAIN ROTOR HEAD BUSHING SET WORN. REPLACED WITH SERVICEABLE PART. - [SDR HEEA087840](https://openairdocs.org/sdr/HEEA087840.md): Gimbal Ring · worn · Jun 13, 2003 · N404PH · Bell 407 · Main Rotor Mast/Swashplate > GIMBAL RING WORN. REPLACED WITH SERVICEABLE PART. - [SDR HEEA087487](https://openairdocs.org/sdr/HEEA087487.md): Relay · stuck · Jun 12, 2003 · N404PH · Bell 407 · Main Rotor Indicating System > ROTOR HORN RELAY STICKING. - [SDR HEEA087385](https://openairdocs.org/sdr/HEEA087385.md): Solenoid Valve · leaking · Jun 11, 2003 · N404PH · Bell 407 · Emergency Flotation Section > LEAKING AT INTERCONNECT FITTING. - [SDR HEEA087039](https://openairdocs.org/sdr/HEEA087039.md): Universal · worn · Jun 4, 2003 · N404PH · Bell 407 · Main Rotor Control > MAIN ROTOR UNIVERSAL WORN. - [SDR HEEA086969](https://openairdocs.org/sdr/HEEA086969.md): Servo · worn · Jun 3, 2003 · N404PH · Bell 407 · Rotorcraft Servo System > CYCLIC SERVO HAS A WORN BEARING. TO BE SENT TO MFG FOR CREDIT. - [SDR HEEA085856](https://openairdocs.org/sdr/HEEA085856.md): Bearing · worn · Mar 28, 2003 · N404PH · Bell 407 · Tail Rotor Drive Shaft > TAIL ROTOR SHAFT HAS WORN BEARINGS. REPLACED WITH SERVICEABLE BEARINGS. REPAIRED. - [SDR HEEA084755](https://openairdocs.org/sdr/HEEA084755.md): Fitting · damaged · Feb 18, 2003 · N404PH · Bell 407 · Main Landing Gear > RT AFT CROSSTUBE FITTING DAMAGED WHEN CROSSTUBE SHIFTED. REPLACED FITTING. - [SDR HEEA084754](https://openairdocs.org/sdr/HEEA084754.md): Strap · damaged · Feb 18, 2003 · N404PH · Bell 407 · Main Landing Gear > RT AFT CROSSTUBE STRAP DAMAGED WHEN CROSSTUBE SHIFTED. REPLACED STRAP. - [SDR HEEA084753](https://openairdocs.org/sdr/HEEA084753.md): Strap · damaged · Feb 18, 2003 · N404PH · Bell 407 · Main Landing Gear > STRAP DAMAGED WHEN CROSSTUBE SHIFTED. REPLACED STRAP. - [SDR HEEA084752](https://openairdocs.org/sdr/HEEA084752.md): Fitting · damaged · Feb 18, 2003 · N404PH · Bell 407 · Main Landing Gear > AFT CROSSTUBE SLIPPED IN FITTING, CAUSING DAMAGE TO FITTING, STRAP AND CROSSTUBE. REPLACED FITTING. - [SDR HEEA084615](https://openairdocs.org/sdr/HEEA084615.md): Beam · damaged · Feb 14, 2003 · N404PH · Bell 407 · Main Landing Gear > AFT CROSSTUBE SLIPPED IN FITTING CAUSING DAMAGE TO FITTING. - [SDR HEEA084404](https://openairdocs.org/sdr/HEEA084404.md): Contactor · failed · Feb 12, 2003 · N404PH · Bell 407 · AC Generation System > NO AUTO RELIGHT AND NO IGNITER ON START. CONTACTOR FAILED. - [SDR HEEA084403](https://openairdocs.org/sdr/HEEA084403.md): Line · leaking · Feb 12, 2003 · N404PH · Bell 407 · Heating System > LINE LEAKING THROUGH WALL. TO BE SENT TO VENDOR. - [SDR HEEA084391](https://openairdocs.org/sdr/HEEA084391.md): Shaft · damaged · Feb 12, 2003 · N404PH · Bell 407 · Tail Rotor Drive Shaft > UNABLE TO BALANCE NR 2 BLOWER ASSY SHAFT. REPAIRED. - [SDR HEEA084378](https://openairdocs.org/sdr/HEEA084378.md): Knob · stripped · Feb 11, 2003 · N404PH · Bell 407 · Audio Integrating System > INTERMITTENTLY PILOT UNABLE TO TRANSMIT TO PASSENGERS. FOUND METAL SHAVINGS INSIDE UNIT, BOTH RX KNOBS AND ICS KNOB BAD. REPLACED AND CLEANED METAL SHAVINGS FROM INSIDE UNIT. BENCH CHECK GOOD. - [SDR HEEA084370](https://openairdocs.org/sdr/HEEA084370.md): Display · malfunctioned · Feb 11, 2003 · N404PH · Bell 407 · Weather Radar System > DISPLAY IMAGE BOUNCES AND INTERMITTENTLY DISAPPEARS. IN SHOP REPAIR. - [SDR HEEA084366](https://openairdocs.org/sdr/HEEA084366.md): Bracket · cracked · Feb 11, 2003 · N404PH · Bell 407 · Passenger/Crew Doors > LT PASSENGER DOOR STRUT LOWER BRACKET CRACKED. SCRAPPED. - [SDR HEEA084333](https://openairdocs.org/sdr/HEEA084333.md): Indicator · malfunctioned · Feb 11, 2003 · N404PH · Bell 407 · Engine EGT/TIT Indicating System > MGT INDICATOR RANGE BAR FLASHES ON START UP. - [SDR HEEA084321](https://openairdocs.org/sdr/HEEA084321.md): Pressure Switch · sticking · Feb 11, 2003 · N404PH · Bell 407 · Fuel Pressure Indicator > SWITCH STICKS, NO PRESS LIGHT ON SHUTDOWN. - [SDR HEEA084320](https://openairdocs.org/sdr/HEEA084320.md): Switch · malfunctioned · Feb 11, 2003 · N404PH · Bell 407 · Fuel Quantity Sensor > LOW FUEL WARNING LIGHT ON WITH 300 LBS OF FUEL ABOARD. - [SDR HEEA084317](https://openairdocs.org/sdr/HEEA084317.md): Float · leaking · Feb 11, 2003 · N404PH · Bell 407 · Emergency Flotation Section > FLOAT BAG FAILED 6 MONTH INSPECTION (LEAKING). - [SDR HEEA084306](https://openairdocs.org/sdr/HEEA084306.md): Disc Pack · cracked · Feb 11, 2003 · N404PH · Bell 407 · Tail Rotor Drive Shaft > TAIL ROTOR DISC PACK CRACKED. - [SDR HEEA084296](https://openairdocs.org/sdr/HEEA084296.md): Mount · worn · Feb 11, 2003 · N404PH · Bell 407 · Main Rotor Transmission Mount > MAIN ROTOR GEARBOX MOUNT WORN. - [SDR HEEA084257](https://openairdocs.org/sdr/HEEA084257.md): Solenoid Valve · failed · Jan 20, 2003 · N404PH · Bell 407 · Emergency Flotation Section > EMERGENCY FLOAT BOTTLE SOLENOID VALVE THERMAL RELIEF BLEW. - [SDR HEEA083987](https://openairdocs.org/sdr/HEEA083987.md): Exhaust Stack · cracked · Jan 17, 2003 · N404PH · Bell 407 · Engine Collector/Tailpipe/Nozzle > EXHAUST STACK CRACKED. - [SDR HEEA083978](https://openairdocs.org/sdr/HEEA083978.md): Bearing · worn · Jan 17, 2003 · N404PH · Bell 407 · Engine Mount Section > ENGINE BIPOD MOUNT HAS A WORN BEARING. - [SDR HEEA083952](https://openairdocs.org/sdr/HEEA083952.md): Blade · peeling · Jan 17, 2003 · N404PH · Bell 407 · Main Rotor Blades > PEELING PAINT ON TAIL ROTOR BLADES AND HIGH FREQUENCY VIBRIATION. REPAIRED. - [SDR HEEA083903](https://openairdocs.org/sdr/HEEA083903.md): Bearing · worn · Jan 17, 2003 · N404PH · Bell 407 · Tail Rotor Control System > TAIL ROTOR LINK BEARING WORN. - [SDR HEEA083893](https://openairdocs.org/sdr/HEEA083893.md): Universal · worn · Jan 16, 2003 · N404PH · Bell 407 · Main Rotor Drive System > MAIN ROTOR UNIVERSAL HAS BEARING WEAR. - [SDR HEEA083866](https://openairdocs.org/sdr/HEEA083866.md): Housing · cracked · Jan 16, 2003 · N404PH · Bell 407 · Engine/Transmission Coupling > FREEWHEEL UNIT HAS A CRACK BETWEEN 2 BOLT HOLES ON HOUSING. REPLACED FREEWHEEL UNIT. - [SDR HEEA083857](https://openairdocs.org/sdr/HEEA083857.md): Spline Adapter · worn · Jan 16, 2003 · N404PH · Bell 407 · Engine/Transmission Coupling > MAIN ROTOR ENGINE TO GEARBOX SPLINE ADAPTER WORN. - [SDR HEEA083804](https://openairdocs.org/sdr/HEEA083804.md): Transceiver · damaged · Jan 16, 2003 · N404PH · Bell 407 · Weather Radar System > FM SUDDENLY WOULD NOT TRANSMIT OR RECEIVE. FOUND BROKEN SOLDER JOINT ON POWER SUPPLY BOARD. REPAIRED. PROBLEM. BENCH CHECK GOOD. - [SDR HEEA083794](https://openairdocs.org/sdr/HEEA083794.md): Bearing · separated · Jan 15, 2003 · N404PH · Bell 407 · Engine Mount Section > BEARING SEPARATED FROM ENGINE MOUNT. REPLACED WITH SERVICEABLE PART. - [SDR HEEA083787](https://openairdocs.org/sdr/HEEA083787.md): Filter · bypassing · Jan 15, 2003 · N404PH · Bell 407 · Aircraft Fuel Filter/Strainer > FILTER FOUND IN BYPASS CONDITION. REPLACED WITH SERVICEABLE PART. - [SDR HEEA083771](https://openairdocs.org/sdr/HEEA083771.md): Engine · making metal · Jan 15, 2003 · N404PH · Bell 407 · Engine (Turbine/Turboprop) > ENGINE MAKING METAL. REPLACED WITH SERVICEABLE ENGINE. - [SDR HEEA083751](https://openairdocs.org/sdr/HEEA083751.md): Bleed Valve · failed · Jan 15, 2003 · N404PH · Bell 407 · Compressor Bleed Valve > OCCASIONAL HIGH MGT WITH POWER CHANGES AND POSSIBLE INTERNAL CONTAMINATION. REPLACED BLEED VALVE. - [SDR HEEA083700](https://openairdocs.org/sdr/HEEA083700.md): Support · cracked · Jan 15, 2003 · N404PH · Bell 407 · Fuselage Main, Structure > AFT ENGINE OIL TANK SUPPORT CRACKED. - [SDR HEEA083699](https://openairdocs.org/sdr/HEEA083699.md): Support · cracked · Jan 15, 2003 · N404PH · Bell 407 · Fuselage Main, Structure > FWD ENGINE OIL TANK SUPPORT CRACKED AT FWD RT MOUNT BOLT. - [SDR HEEA083693](https://openairdocs.org/sdr/HEEA083693.md): Brushes · worn · Jan 15, 2003 · N404PH · Bell 407 · Starter-Generator > STARTER GEN BRUSHES WORN. REPAIRED. - [SDR HEEA083660](https://openairdocs.org/sdr/HEEA083660.md): Control Box · unreliable · Jan 14, 2003 · N404PH · Bell 407 · Weather Radar System > DATA BOX SKYWATCH UNRELIABLE. - [SDR HEEA083633](https://openairdocs.org/sdr/HEEA083633.md): Indicator · malfunctioned · Jan 14, 2003 · N404PH · Bell 407 · Attitude Gyro and Indicating System > ADI WON'T CAGE. REPAIRED. - [SDR HEEA083615](https://openairdocs.org/sdr/HEEA083615.md): Headset · damaged · Jan 14, 2003 · N404PH · Bell 407 · Communications System > MIC ON HEADSET BROKEN. REPAIRED. - [SDR HEEA082603](https://openairdocs.org/sdr/HEEA082603.md): Drive Shaft · corroded · Dec 13, 2002 · N404PH · Bell 407 · Main Rotor Drive System > INPUT DRIVESHAFT IS CORRODED. Next page: https://openairdocs.org/aircraft/N404PH/reports.md?page=2 ## 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 = 'N404PH' AND registry_match = 'registration' ORDER BY difficulty_date DESC ``` This list as a web page: https://openairdocs.org/aircraft/N404PH/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.