# Service difficulty reports: Honda HA-420

A list on [Honda HA-420](https://openairdocs.org/model/honda-ha-420.md).

Newest first. General aviation reporting is voluntary.

- [SDR 5OKA202609150082](https://openairdocs.org/sdr/5OKA202609150082.md): Cover · separated · Aug 2, 2026 · N909BP · Honda HA420 · Engine (Turbine/Turboprop)
  > HONDAJET N909BP, 42000099, TAXIED OUT ON SUNDAY, AUGUST 2, AND THE LINE SERVICE PERSONNEL FOUND A 7" X 2" CURVED STAINLESS-STEEL PLATE/PIECE WITH P/N - 4JQT4-13121-Q0A-0100 LAYING ON THE GROUND WHERE THE AIRCRAFT HAD PARKED. A SECUITY VIDEO SHOWED AN OBJECT BE
- [SDR 3EJA202603250001](https://openairdocs.org/sdr/3EJA202603250001.md): Outflow Valve · failed · Feb 13, 2026 · N301JT · Honda HA420 · Pressure Regulator/Outflow Valve
  > CABI ALT HIGH CAS/DEPRESSURIZATION AT FL290. R&R OUTFLOW VALVE.
- [SDR 3EJA20260310326](https://openairdocs.org/sdr/3EJA20260310326.md): Outflow Valve · failed · Feb 13, 2026 · N301JT · Honda HA420 · Pressure Regulator/Outflow Valve
  > CABI ALT HIGH CAS/DEPRESSURIZATION AT FL290. EXECUTED EMERGENCY PROCEDURES AND DIVERTED TO FXE. /R & R OUTFLOW VALVE.
- [SDR 2023F00305](https://openairdocs.org/sdr/2023F00305.md): Actuator · defective · Oct 12, 2023 · N719SJ · Honda HA420 · Elevator Tab Control System
  > AFTER TAKEOFF CREW OBSERVED PITCH TRIM FAULT CAS MESSAGE AND EXPERIENCED INCREASED BACK PRESSURE ON THE YOKE DURING CLIMB OUT. CREW PERFORMED QRH PROCEDURES, SWITCHING TO STBY TRIM AND EXECUTED DIVERT TO NEARBY AIRPORT. AIRCRAFT LANDED WITHOUT INCIDENT.
- [SDR 2023F00165](https://openairdocs.org/sdr/2023F00165.md): Compensator · failed · May 19, 2023 · N913JT · Honda HA420 · Landing Gear Brake System
  > LH BRAKE FAIL
- [SDR 2023FA0000202](https://openairdocs.org/sdr/2023FA0000202.md): Windscreen · cracked · Apr 6, 2023 · N829D · Honda HA420 · Window/Windshield System
  > AT APPROXIMATELY 1640 EST, N829DL WHILE REPOSITIONING FROM OPF TO PDK (ATLANTA) AT FLIGHT LEVEL 330, THE LEFT, FOREWORD WINDSCREEN BEGAN TO DELAMINATE AND EVENTUALLY CRACK. THIS WINDSCREEN IS CERTIFIED TO MAINTAIN CABIN PRESSURE WHILE WITHSTANDING AERODYNAMIC
- [SDR 2023F00104](https://openairdocs.org/sdr/2023F00104.md): Unknown · unknown · Apr 5, 2023 · N719SJ · Honda HA420 · Elevator Control System
  > ON TUESDAY APRIL 4 2023, AT APPROXIMATELY 1200 EST N719SJ WAS DESCENDING OUT OF FL390 FOR FL370. THE AUTOPILOT DISENGAGED AND FLASHED THE AMBER WARNING LIGHT. WE RECEIVED THE “PITCH TRIM FAIL” CAS MESSAGE. MICHAEL RICKETTS WAS THE PF AND DENNIS LELAND THE PM.
- [SDR 2023F00172](https://openairdocs.org/sdr/2023F00172.md): Compensator · failed · Mar 25, 2023 · N103JT · Honda HA420 · Landing Gear Brake System
  > DURING SLOW TAXI IN, (LESS THAN 10 KNOTS), AFTER LANDING HAD TOTTAL RELEASE OF BRAKING EFFECTIVENESS FOR 1 SECOND ON BOTH SIDES.
- [SDR 2023F00103](https://openairdocs.org/sdr/2023F00103.md): Pdu · unknown · Mar 20, 2023 · N820JL · Honda HA420 · AC Power Distribution System
  > THE #1 POWER DISTRIBUTION UNIT (PDU) FAILURE CAUSED A NUMBER OF CREW ALERT SYSTEM (CAS) MESSAGE. THIS FAILURE TRIGGERED A SERIES OF CASCADING ELECTRICAL SIGNAL FAILURES TO NUMEROUS AIRCRAFT SYSTEMS, CULMINATING IN THE HYDRAULIC SYSTEMS PRESSURIZATION SIGNALS
- [SDR 2023FA0000063](https://openairdocs.org/sdr/2023FA0000063.md): Flap · cracked · Feb 3, 2023 · N488TK · Honda HA420 · Flight Control System
  > DURING ROUTINE MX, NOTED THE RIGHT FLAP TRAILING EDGE UNDER THE ENGINE PYLON TO BE CRACKED AND SEPARATED ALONG THE TRAILING EDGE BEND RADIUS FOR APPROX 9" WITH 2 PROPAGATING CRACKS RUNNING FORWARD INTO THE AIRSTREAM.
- [SDR 2023F00173](https://openairdocs.org/sdr/2023F00173.md): Transducer · failed · Jan 15, 2023 · N416JT · Honda HA420 · Landing Gear Brake System
  > RH BRAKE GRABBING
- [SDR 2023F00159](https://openairdocs.org/sdr/2023F00159.md): Compensator · failed · Jan 11, 2023 · N137JT · Honda HA420 · Landing Gear System
  > RUNWAY EXCURSION
- [SDR EKGA2022121200510](https://openairdocs.org/sdr/EKGA2022121200510.md): Vent · mechanic error · Nov 21, 2022 · N617AF · Honda HA420 · Nacelle/Pylon Structure
  > LEFT ENGINE BLEED LEAK CAS MESSAGE DURING CLIMB OUT AT 21,000 FT. PILOT DEVIATED TO KBRO WITH NO INCIDENT. DISCOVERED L ENGINE VENTILATION SLOTS WERE FOUND SEALED OVER. REMOVED EXCESS SEALANT FROM SLOTS PER HONDA TECH SUPPORT. GROUND IDLE AND POWER RUNS SUCCES
- [SDR 2023F00174](https://openairdocs.org/sdr/2023F00174.md): Brake · failed · Nov 9, 2022 · N909BP · Honda HA420 · Landing Gear Brake System
  > RH BRAKE LOCKED UP ON LANDING
- [SDR 2023F00161](https://openairdocs.org/sdr/2023F00161.md): Compensator · failed · Jun 20, 2022 · N416JT · Honda HA420 · Landing Gear System
  > NORMAL BRAKE FAIL CAS MESSAGE
- [SDR 2023F00150](https://openairdocs.org/sdr/2023F00150.md): Compensator · failed · Apr 16, 2022 · N412JT · Honda HA420 · Landing Gear Brake System
  > RH BRAKE SPONGY
- [SDR 2023F00158](https://openairdocs.org/sdr/2023F00158.md): Compensator · failed · Apr 4, 2022 · N103JT · Honda HA420 · Landing Gear Brake System
  > LH BRAKE PEDAL SOFTER THAN RH
- [SDR 2022F00148](https://openairdocs.org/sdr/2022F00148.md): None · open · Mar 20, 2022 · N420H · Honda HA420 · Elevator Tab Control System
  > ON SUNDAY, MARCH 20TH, TMB420, A HONDA JET (HA-420) OPERATED BY FLYDREAMS, LLC (DBA VOLATO) ACC 4F1A515O DEPARTED KAPF (NAPLES, FL) FOR KEYW (KEY WEST, FL). UPON DEPARTURE THE AIRCRAFT EXPERIENCED A CONTROLLABILITY ISSUE. SPECIFICALLY, THE TRIM SYSTEM FOR AI
- [SDR 2023F00151](https://openairdocs.org/sdr/2023F00151.md): Compensator · failed · Mar 9, 2022 · N903JT · Honda HA420 · Landing Gear Brake System
  > BRAKES FAIL / RUNWAY DEPARTURE
- [SDR 2023F00162](https://openairdocs.org/sdr/2023F00162.md): Compensator · failed · Feb 19, 2022 · N677JT · Honda HA420 · Landing Gear System
  > LH BRAKE FAIL
- [SDR 2023FA0000269](https://openairdocs.org/sdr/2023FA0000269.md): Compensator · failed · Feb 19, 2022 · N677JT · Honda HA420 · Landing Gear Brake System
  > LH BRAKE FAIL
- [SDR 2023F00170](https://openairdocs.org/sdr/2023F00170.md): Compensator · failed · Jan 30, 2022 · N913JT · Honda HA420 · Landing Gear Brake System
  > RH BRAKE FADE
- [SDR 2023F00166](https://openairdocs.org/sdr/2023F00166.md): Compensator · failed · Jan 30, 2022 · Honda HA420 · Landing Gear Brake System
  > RH BRAKE FADE
- [SDR 2023F00171](https://openairdocs.org/sdr/2023F00171.md): Compensator · failed · Jan 28, 2022 · N412JT · Honda HA420 · Landing Gear Brake System
  > LH BRAKE 0% BRAKING POWER
- [SDR 2023F00168](https://openairdocs.org/sdr/2023F00168.md): Compensator · failed · Jan 28, 2022 · N412JT · Honda HA420 · Landing Gear Brake System
  > LH BRAKE 0% BRAKING POWER
- [SDR 2023F00167](https://openairdocs.org/sdr/2023F00167.md): Compensator · failed · Jan 25, 2022 · N412JT · Honda HA420 · Landing Gear Brake System
  > SPONGY BRAKE / BRAKES FAILED
- [SDR 2023F00169](https://openairdocs.org/sdr/2023F00169.md): Compensator · failed · Jan 10, 2022 · N103JT · Honda HA420 · Landing Gear Brake System
  > LH BRAKE PEDAL SOFTER THAN RH. SPONGY
- [SDR 2023F00160](https://openairdocs.org/sdr/2023F00160.md): Compensator · failed · Jan 5, 2022 · N416JT · Honda HA420 · Landing Gear Brake System
  > NORMAL BRAKE FAIL CAS MESSAGE
- [SDR 2023F00156](https://openairdocs.org/sdr/2023F00156.md): Compensator · failed · Dec 13, 2021 · N909BP · Honda HA420 · Landing Gear Brake System
  > NORMAL BRAKE FAIL CAS MESSAGE ILLUMINATED
- [SDR 2023F00164](https://openairdocs.org/sdr/2023F00164.md): Compensator · failed · Jun 25, 2021 · N913JT · Honda HA420 · Landing Gear Brake System
  > LH BRAKE FAIL
- [SDR 2021F00143](https://openairdocs.org/sdr/2021F00143.md): Brake Sys · failed · Jun 4, 2021 · N10XN · Honda HA420 · Landing Gear Brake System
  > UPON LANDING AT KRYY ON RUNWAY 27, THE CREW REPORTED THEY HAD NO BRAKE ACTUATION AT TOUCH DOWN. THEY THEN DEPLOYED THE EMERGENCY BRAKES WHICH DOES NOT TIE INTO THE ANTISKID SYSTEM WHICH CAUSED BOTH MAIN TIRES TO FLAT SPOT THUS CAUSING THEM TO BLOW. THE LH TIRE
- [SDR 2023F00163](https://openairdocs.org/sdr/2023F00163.md): Compensator · failed · Feb 26, 2021 · N913JT · Honda HA420 · Landing Gear Brake System
  > NORMAL BRAKE FAIL CAS MESSAGE ILLUMINATED
- [SDR K5SR202008103599](https://openairdocs.org/sdr/K5SR202008103599.md): Controller · malfunctioned · Jul 31, 2020 · N682TM · Honda HA420 · Cabin Temperature Control System
  > CUSTOMER SQUAWK OF NO HEAT IN CABIN AREA. INSTALLED MODIFIED VCSC CONTROLLER FROM ENVIRO SYSTEMS INC P/N 1300640-10 S/N 00216. OPERATION CHECKED SATISFACTORY. AIRCRAFT FLEW ABOUT 2 HOURS AND CUSTOMER SQUAWKED THAT THERE WAS NOW NO COCKPIT HEAT AND WINDSHIELD
- [SDR 2023F00153](https://openairdocs.org/sdr/2023F00153.md): Compensator · failed · Oct 30, 2019 · N225DB · Honda HA420 · Landing Gear Brake System
  > AIRCRAFT PULLS TO THE LEFT ON LANDING
- [SDR 3HDR2019102800001](https://openairdocs.org/sdr/3HDR2019102800001.md): Windscreen · delaminated · Oct 28, 2019 · N199HJ · Honda HA420 · Flight Compartment Windows
  > THE AIRCRAFT ARRIVED FOR THE INITIAL 600 FLIGHT HR. INSPECTION WITH A KNOWN LH WINDSHIELD DELAMINATION. THE DELAMINATION RAN FROM THE LH EDGE OF THE WINDSHIELD TO APPROXIMATELY 3” INBOARD ALONG THE FULL LENGTH (HEIGHT) OF WINDSHIELD. PRIOR TO WINDSHIELD REMOVA
- [SDR 2023F00152](https://openairdocs.org/sdr/2023F00152.md): Compensator · failed · Oct 6, 2019 · N225DB · Honda HA420 · Landing Gear Brake System
  > RUNWAY EXCURSION
- [SDR 2023F00157](https://openairdocs.org/sdr/2023F00157.md): Compensator · failed · Jan 15, 2019 · N101JT · Honda HA420 · Landing Gear System
  > LHBRAKE PEDAL SOFTER THAN RH
- [SDR 2023F00154](https://openairdocs.org/sdr/2023F00154.md): Compensator · failed · Dec 19, 2018 · N101JT · Honda HA420 · Landing Gear Brake System
  > LH BRAKE PEDAL SOFTER THAN RH
- [SDR 3HDR2018102300004](https://openairdocs.org/sdr/3HDR2018102300004.md): Pump · leaking · Oct 20, 2018 · N336BD · Honda HA420 · Hydraulic Pump (Electric/Engine), Main
  > DURING PRELIMINARY INSPECTION DISCOVERED ACCUMULATION OF HYDRAULIC FLUID ON AFT FUSELAGE EXTERIOR. UPON FURTHER INVESTIGATION FOUND HYDRAULIC SYSTEM ECOLOGY BOTTLE FULL AND OVER FLOWING. FURTHER TROUBLE SHOOTING WAS PERFORMED AND FOUND MAIN HYDRAULIC PUMP ASSE
- [SDR 2018FA0000395](https://openairdocs.org/sdr/2018FA0000395.md): Wheel · loose · Sep 28, 2018 · N120GE · Honda HA420 · Wheel/Ski/Float
  > MAIN WHEELS UNDER TORQUE FROM PRODUCTION: WE HAVE NOW REPLACED FOUR MAIN WHEELS ASSY. FROM NEW AND ALL FOUR WHEEL NUTS HAVE BEEN LOOSE ON THE AXLE SINCE THE AIRCRAFT WENT INTO SERVICE. IT WAS NOT DISCOVERED UNTIL THE WHEEL WAS REPLACED. OEM HAS BEEN CONTACTED
- [SDR 3HDR2018040600003](https://openairdocs.org/sdr/3HDR2018040600003.md): Pump · contaminated · Apr 3, 2018 · N878HJ · Honda HA420 · Fuel Boost Pump
  > FLT CREW REPORTED FUEL DRAINS BACK TO CENTER TANK APPROX. 100 LBS. IN 30 MINUTES. TROUBLESHOT FUEL SYSTEM AND FOUND 280 LBS. OF FUEL PER HOUR WOULD TRANSFER FROM RH WING TANK INTO CENTER TANK WHILE AIRCRAFT SAT STATICALLY. GAINED ACCESS FOR VISUAL INSPECTION O
- [SDR EKGA20171201001](https://openairdocs.org/sdr/EKGA20171201001.md): Skin · dented · Nov 3, 2017 · N420AZ · Honda HA420 · Horizontal Stabilizer, Plate/Skin
  > DURING A ROUTINE POST FLIGHT INSPECTION SEVERAL DENTS WERE NOTED ON THE HORIZONTAL STABILIZER LEADING EDGES. FURTHER INSPECTION OF THE AIRCRAFT SHOW NO OTHER DAMAGE TO ANY OTHER SURFACES. THE HORIZONTAL STABILIZER DAMAGE APPEARS SIMILAR TO WHAT YOU WOULD SEE F
- [SDR 3HDR2017022000003](https://openairdocs.org/sdr/3HDR2017022000003.md): Window · migrated · Feb 17, 2017 · N527MW · Honda HA420 · Passenger Compartment Windows
  > DURING A PRELIMINARY INSPECTION OF THE FUSELAGE EXTERNAL AREAS A GASKET TYPE MATERIAL WAS FOUND MIGRATING OUT BETWEEN THE FORWARD RT PASSENGER CABIN WINDOW AND THE FUSELAGE SKIN. APPROXIMATELY 1.0 INCHES IN LENGTH AND 1/4 INCHES HIGH OF MATERIAL WAS NOTED STIC
- [SDR 3HDR2017022000002](https://openairdocs.org/sdr/3HDR2017022000002.md): Cable · intermittent · Feb 17, 2017 · N227WP · Honda HA420 · Air Collision Avoidance System
  > THE FLIGHT CREW REPORTED TCAS II INTERMITTENT FAILURES. TROUBLESHOT SYSTEM BY DOWNLOADING ASSERT LOG DATA HISTORY AND PROVIDING TO GARMIN AVIONICS TECHNICAL SERVICES FOR ANALYSIS. GARMIN DETERMINED FAULTS WERE TRIGGERED BY FAULTY LOWER ANTENNA CABLES. GAINED A
- [SDR 3HDR2017021500001](https://openairdocs.org/sdr/3HDR2017021500001.md): Tube · leaking · Feb 13, 2017 · N420EA · Honda HA420 · Fuel Storage
  > FUEL WAS REPORTED DRIPPING FROM THE LOWER CENTER FUSELAGE AREA. FURTHER INVESTIGATION FOUND THE LOWER FUEL ELECTRICAL ISOLATOR TUBE LEAKING BETWEEN THE BONDED AREA OF THE METAL FERRULE AND THE OUTER SURFACE OF THE TUBE. FOLLOWING THE REPLACEMENT OF THE ELECTR

## 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 = 'HA420'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/model/honda-ha-420/reports

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