# Service difficulty reports: Mitsubishi MU-300

A list on [Mitsubishi MU-300](https://openairdocs.org/model/mitsubishi-mu-300.md).

Newest first. General aviation reporting is voluntary.

- [SDR 2009FA0000054](https://openairdocs.org/sdr/2009FA0000054.md): Radome · damaged · Jan 14, 2009 · N7PW · Mtsbsi MU300 · Aerodynamic Fairings
  > WHILE PARKED, FBO PERSONNEL BACKED EQUIPMENT INTO NOSE OF AIRCRAFT FWD OF PRESSURE BULKHEAD. DAMAGE TO RADOME, PITOT TUBE, AND SKIN. AIRCRAFT WAS AUTHORIZED FOR SPECIAL FLIGHT PERMIT AND FERRIED TO THE REPAIR STATION. ADDITIONAL INFORMATION AS REPAIRS PROGR
- [SDR JX6A200800001](https://openairdocs.org/sdr/JX6A200800001.md): Cable Assy · kinked · Jan 16, 2008 · Mtsbsi MU300 · Landing Gear Retraction/Extension System
  > DURING LANDING IN FAY THE LT MLG DOOR CONTACTED THE RUNWAY. 3 DOWN & LOCKED LIGHTS WERE ILLUMINATED IN THE COCKPIT. MAINTENANCE DISCOVERED THE LT MLG EMERGENCY RELEASE CABLE HAD BECOME LODGED & WOULD NOT ALLOW THE DOOR UP-LOCK TO FULLY OPEN. THE UPLOCK DID A
- [SDR 2007F00036](https://openairdocs.org/sdr/2007F00036.md): Door · cracked · Apr 27, 2007 · N417KT · Mtsbsi MU300 · Passenger/Crew Doors
  > DURING SCHEDULED A, B, & C INSPECTION FOUND CABIN ENTRANCE DOOR CASE ASSEMBLY P/N: 45A30096 CRACKED AT DOOR BUSHING HOLES. CASE ASSEMBLY IS NONE REPAIRABLE AND REQUIRED REMOVAL AND REPLACEMENT WITH NEW. THE NEW CASE ASSEMBLY CAUSE A INTERFERENCE FIT WITH THE D
- [SDR 148J020807](https://openairdocs.org/sdr/148J020807.md): Gcu · shorted · Feb 8, 2007 · N148J · Mtsbsi MU300 · AC Generation System
  > RT ENGINE WOULD NOT START. STARTER WOULD NOT ROTATE ENGINE AND TRIP CIRCUIT BREAKER. FOUND GCU BAD.
- [SDR DIXA200600002](https://openairdocs.org/sdr/DIXA200600002.md): Fuel Control · failed · Nov 23, 2006 · N300TS · Mtsbsi MU300 · Fuel Control/Turbine Engines
  > DURING CLIMBOUT, FLIGHT CREW REPORTED THE RT ENGINE N1 (FAN) OVERSPED TO 116.8 PERCENT. ITT DID NOT EXCEED LIMITS. N2 WAS RT AT RED LINE LIMIT OF 97.0 PERCENT. THE FUEL FLOW WAS EXTREMELY HIGH AT 1300 LBS/HR. FLIGHT CREW RETARDED POWER TO IDLE WITH NO CHANGE I
- [SDR YP62006F00000](https://openairdocs.org/sdr/YP62006F00000.md): O-Ring · leaking · Oct 16, 2006 · N360CA · Mtsbsi MU300 · Turbine Engine Oil System
  > DURING THE DESCENT, PILOTS NOTICE OIL PRESSURE LOW ON LT ENGINE AND CONTINUE SLOWLY DROPPING. PILOT TOOK IMMEDIATE ACTION CHECKING THE EMERGENCY PROCEDURE FOLLOWED BY SHUTTING DOWN THE LT ENGINE AND DIVERTED TO THE NEAREST AIRPORT AND DECLARE AN EMERGENCY. O
- [SDR 148J063006](https://openairdocs.org/sdr/148J063006.md): Brake · failed · Jun 30, 2006 · N148J · Mtsbsi MU300 · Brake
  > LEFT MAIN BRAKE FAILURE.
- [SDR 2006FA0000696](https://openairdocs.org/sdr/2006FA0000696.md): Wire · burned · Feb 10, 2006 · N109PW · Mtsbsi MU300 · Electrical Power System Wiring
  > SHORT CIRCUIT, WIRES BURNED ON LT CNTRL JUNCT BOX AREA. DURING SCHEDULED B INSP IAW MM, FOUND WIRES BURNED, DAMAGED ON CABLE LOOM CONNECTOR P AND J 230. DUE TO SHORT CIRCUIT ON TRIPLE WIRES, INSULATION OF SHIELD TERM SUSPECT ON CABLES LOOM CONNECTORS. SB MU
- [SDR DJFA2005074](https://openairdocs.org/sdr/DJFA2005074.md): Landing Gear · malfunctioned · Mar 13, 2005 · N507CW · Mtsbsi MU300 · Landing Gear Retraction/Extension System
  > KDAL - KBGM TRIP ID NR 797353 CREW REPORTED THAT AFTER GEAR RETRACTION FOLLOWING A FUEL STOP AT KLEX THE NOSE LANDING GEAR DROPPED AND LOCKED. GEAR WAS CYCLED TWO ADDITIONAL TIMES TO KEEP IT UP AND LOCKED. AIRCRAFT LANDED IN KBGM WITHOUT FURTHER INCIDENT.
- [SDR JX62004F00001](https://openairdocs.org/sdr/JX62004F00001.md): Engine · failed · Nov 10, 2004 · N824DW · Mtsbsi MU300 · Engine (Turbine/Turboprop)
  > DURING DESCENT, THE FLIGHT CREW REDUCED THE POWER LEVERS TO IDLE. NOTICED THAT THE ENGINE PITCH NOISE CHANGED CONSIDERABLY. THE MASTER CAUTION LIGHT CAME ON WITH AN (ENG LO OIL PRESS) LIGHT. THE CREW FOLLOWED THE CHECKLIST FOR AN ENGINE FAILURE OR ENGINE SH
- [SDR A075SA2](https://openairdocs.org/sdr/A075SA2.md): Uplock Roller · out of rig · Jan 25, 2004 · N824DW · Mtsbsi MU300 · Landing Gear Door Retract Section
  > RT MAIN LANDING GEAR INBOARD DOOR DID NOT LOCK IN UP POSITION DURING GEAR EXTENSION. VERIFIED GEAR DOWN AND LOCKED, CONTINUED APPROACH, LANDED WITHOUT EVENT. INSPECTION FOUND GEAR DOOR UPLOCK MECHANISM OUT OF RIG. RE-RIGGED, AND FUNCTIONAL TEST PERFORMED SA
- [SDR A063SA](https://openairdocs.org/sdr/A063SA.md): Squat Switch · misrigged · May 9, 2003 · N984SA · Mtsbsi MU300 · Landing Gear Position and Warning
  > UPON LANDING, THRUST REVERSERS FAILED TO DEPLOY AND SPEED BRAKES FAILED TO EXTEND. WHEEL BRAKES INITIALLY WORKED, BUT FAILED DURING ROLLOUT. THE USE OF EMERGENCY BRAKES WERE REQUIRED. AS AIRCRAFT SLOWED, USE OF THRUST REVERSERS, SPEED BRAKES, AND WHEEL BRAK
- [SDR MGO2003F00001](https://openairdocs.org/sdr/MGO2003F00001.md): Control Cable · broken · Jan 20, 2003 · N824DW · Mtsbsi MU300 · Trailing Edge Flap Control System
  > WHILE INVESTIGATING PILOT REPORT OF SPEED BRAKES. FAILURE TO DEPLOY IN FLIGHT. FOUND LT HAND FORWARD FLAP CABLE CORRODED INTO TWO PIECES INSIDE SWAGED TERMINAL. CABLE SHOWED SLIGHT TO NO VISIBLE INDICATION OF CORROSION ON THE OUTSIDE OF SWAGED TERMINAL, NO
- [SDR JOU2002F00001](https://openairdocs.org/sdr/JOU2002F00001.md): Venturi · cracked · Sep 26, 2002 · N600GW · Mtsbsi MU300 · Engine Bleed Air System
  > PILOT REPORTED DURING A ROUTINE MAINTENANCE CHECK FLIGHT AT 10,000 FT., WHEN RIGHT OR LEFT (ONLY) BLEED AIR SUPPLY WAS SELECTED, CABIN PRESSURIZATION COULD NOT BE MAINTAINED. THE CRACKS WERE FOUND IN RIGHT AND LEFT VENTURI ASSEMBLY LOCATED IMMEDIATELY AFT OF
- [SDR S8A2002F00002](https://openairdocs.org/sdr/S8A2002F00002.md): Line · ruptured · Jun 1, 2002 · N399MM · Mtsbsi MU300 · Engine Bleed Air System
  > CREW REPORTED REAR DUCT OVERHEAT WARNING WHILE ON THE GROUND AWAITING DEPARTURE. TROUBLESHOOTING REVEALED RIGHT ENGINE BLEED AIR DUCT PN 45A63517-31 (SUPERCEDED TO 128-550012-1) HAD RUPTURED IN THE LOWER BELLOWS. THIS PART IS THE SUBJECT OF AD 2001-0306 DATE
- [SDR JG0201741](https://openairdocs.org/sdr/JG0201741.md): Brake Assy · disintegrated · May 21, 2002 · N574CF · Mtsbsi MU300 · Brake
  > WHILE TAXIING AFTER LANDING FELT AIRCRAFT SHUTTER. STOPPED AIRCRAFT ON TAXIWAY AND VISUALY INSPECTED OUTSIDE OF AIRCRAFT NO DEFECTS NOTED. CONTINUED TAXI TO PARKING. MAINTENANCE REMOVED LT WHEEL AND FOUND BRAKE ASSEMBLY HAD CAME APART.
- [SDR 482DM40802](https://openairdocs.org/sdr/482DM40802.md): Transceiver · faulty · Apr 8, 2002 · N482DM · Mtsbsi MU300 · Weather Radar System
  > RADAR INDICATOR COMES ON THE GOES OUT WITHIN 10 MINUTES. REMOVE AND REPLACE RADAR R/T.
- [SDR 482DM40102](https://openairdocs.org/sdr/482DM40102.md): Indicator · malfunctioned · Apr 1, 2002 · N482DM · Mtsbsi MU300 · Weather Radar System
  > RADAR INDICATOR HAS A GOOD TEST PATTERN BUT WILL NOT PAINT WEATHER AND/OR GROUND.
- [SDR 482DM32702](https://openairdocs.org/sdr/482DM32702.md): Receiver · unreliable · Mar 29, 2002 · N482DM · Mtsbsi MU300 · Automatic Direction Finder (ADF) System
  > ADF INDICATOR INTERMITTENTLY WILL NOT LOCK ON SIGNAL, NEEDLE WOULD WANDER OFF STATION, THEN LOCK ON TO STATION. PILOT REPORTED THAT IT WAS UNRELIABLE.
- [SDR 482DM32002](https://openairdocs.org/sdr/482DM32002.md): Antenna · debonded · Mar 29, 2002 · N482DM · Mtsbsi MU300 · VHF Communications System
  > NR 1 COMMUNICATION RADIO DIFFICULT TO UNDERSTAND WHEN IN VISUAL MOISTURE. FOUND LEFT SIDE OF LEADING EDGE OF ANTENNA DEBONDED.
- [SDR 2002FA0000182](https://openairdocs.org/sdr/2002FA0000182.md): Pushrod · chafed · Feb 8, 2002 · N399MM · Mtsbsi MU300 · Rudder Control System
  > UPON INSPECTION, PILOT AND COPILOT RUDDER PEDAL PUSH RODS WERE FOUND SEVERELY CHAFED ON THE TOP SIDE, EVIDENTLY BY MAKING CONTACT WITH THE FLOOR SKIN. THIS CONDITION HAD BEEN OCCURRING FOR QUITE SOME TIME FOR THE PUSH RODS TO HAVE BEEN CHAFED THIS SEVERELY.
- [SDR JEM2002F00000](https://openairdocs.org/sdr/JEM2002F00000.md): Mount · cracked · Dec 17, 2001 · N417KT · Mtsbsi MU300 · Engine Mount Section
  > CONCERNING A VISUAL INSPECTION OF THE LT ENGINE CARRY THROUGH MOUNT BACKET FOR CRACKS ON MFG 400 NAD 400A. IT DOES NOT COVER THE MU-300 SERIES AIRCRAFT. WE IN SPECTED THIS AIRCRAFT AND FOUND A CRACKED MOUNT BRACKET. BUGGEST MFG EXPAND THE MODELS TO INCLUDE
- [SDR A027SA](https://openairdocs.org/sdr/A027SA.md): Uplock · failed · Oct 9, 2001 · N7PW · Mtsbsi MU300 · Landing Gear Door Retract Section
  > RIGHT MAIN INBOARD GEAR DOOR (UPON LANDING) DID NOT LATCH IN UP POSITION, ALLOWING DOOR TO LOWER ITSELF TO PAVEMENT, CAUSING SKIN DAMAGE TO DOOR.
- [SDR A083SA](https://openairdocs.org/sdr/A083SA.md): O-Ring · damaged · Oct 9, 2001 · N417KT · Mtsbsi MU300 · Turbine Engine Oil System
  > CREW OBSERVED OIL PRESSURE ON RIGHT ENGINE DROPPING FOLLOWED BY A MASTER WARNING. VERIFIED LOSS OF OIL PRESSURE OCCURRING. FLIGHT CREW SHUT RIGHT ENGINE DOWN PRECAUTIONARY AS CHECKLIST COMMANDS.
- [SDR FJT01031261](https://openairdocs.org/sdr/FJT01031261.md): Door Seal · worn · Mar 1, 2001 · N126GA · Mtsbsi MU300 · Doors
  > BNA - CREW REPORTED DURING CLIMB TO 27,000 FT GOING THROUGH APPROXIMATELY 26,000 FT JUST PRIOR TO CABIN ATTAINING MAXIMUM DIFFERENTIAL A LOUD HOWL WAS HEARD FROM THE CABIN DOOR WHICH TURNED INTO A LOUD WHINING SOUND WHEN AIRCRAFT LEVELED AT 27,000 FT. CREW NO
- [SDR DJFA200100011](https://openairdocs.org/sdr/DJFA200100011.md): Light · inoperative · Mar 5, 2000 · N507CW · Mtsbsi MU300 · Exterior Lighting
  > INSPECTION FOUND TAIL NAVIGATION LIGHT INOPERATIVE. BULB DISCOVERED TO BE BLOWN. REPLACED LAMP, OPS CHECK GOOD. MANY SIMILAR OCCURRENCES.
- [SDR DJFA200100010](https://openairdocs.org/sdr/DJFA200100010.md): Light · inoperative · Feb 29, 2000 · N507CW · Mtsbsi MU300 · Exterior Lighting
  > INSPECTION FOUND TAIL NAVIGATION LIGHT INOPERATIVE. BULB DISCOVERED TO BE BLOWN. REPLACED LAMP, OPS CHECK GOOD. MANY SIMILAR OCCURRENCES.
- [SDR 99ZZZX4679](https://openairdocs.org/sdr/99ZZZX4679.md): Filter Assy · misinstalled · Dec 7, 1999 · N10NM · Mtsbsi MU300 · Aircraft Fuel Filter/Strainer
  > DURING A NORMAL INSPECTION, BOTH FUEL STRAINERS WERE FOUND INSTALLED BACKWARDS. WITH FUEL FLOW IN THE WRONG DIRECTION, THE BYPASS ANNUNCIATOR WOULD BE INOPERATIVE. THIS WAS THE FIRST MAJOR INSPECTION OF THIS AIRCRAFT BY THIS FACILITY. THE PROBLEM WAS DETECT
- [SDR 99ZZZX823](https://openairdocs.org/sdr/99ZZZX823.md): Duct · cracked · Feb 3, 1999 · N400GK · Mtsbsi MU300 · Pneumatic Distribution System
  > AN INVESTIGATION WAS CONDUCTED TO DETERMINE THE CAUSE OF A VERY SUBSTANTIAL BLEED AIR LEAK IN THE TAIL COMPARTMENT. THE LEAK WAS TRACED TO A DRILLED HOLE IN THE OUTER WALL OF THE 45A63514-1 VENTURI. THE VENTURI WAS REMOVED AND INSPECTED INTERNALLY. THE INNER
- [SDR 98ZZZX478](https://openairdocs.org/sdr/98ZZZX478.md): Torque Tube · misaligned · Jan 21, 1998 · N70VT · Mtsbsi MU300 · Rudder Control System
  > DURING A AND B CHECK, AIRCRAFT TECHNICIANS FOUND AIRCRAFT RUDDER DISPLACED TO THE RIGHT APPROXIMATELY 3 INCHES. THIS CONDITION WAS FOUND WITH RUDDER CONTROL SYSTEM RIGGED PER AIRCRAFT MM AND WITH PROPER CABLE TENSION SET. SYSTEM RIG PINS WERE ALSO INSTALLED
- [SDR 97ZZZX2545](https://openairdocs.org/sdr/97ZZZX2545.md): Control Cable · broke · May 14, 1997 · N88ME · Mtsbsi MU300 · Landing Gear Retraction/Extension System
  > ON APPROACH, CREW SELECTED LANDING GEAR DOWN, BUT RECEIVED NO GEAR INDICATION. CREW CYCLED GEAR, RECEIVED NO INDICATION. PERFORMED EMERG EXT PROCEDURE IAW FLT MANUAL, RECEIVED NORMAL GEAR INDICATION. ACFT LANDED SAFELY WITH NO FURTHER INCIDENT. MX INSPECT
- [SDR 97ZZZX1089](https://openairdocs.org/sdr/97ZZZX1089.md): Release Cable · broken · Jan 27, 1997 · N482DM · Mtsbsi MU300 · Landing Gear Door Retract Section
  > DURING A POST-FLIGHT INSP DAMAGE WAS NOTICED ON THE LT FUSELAGE MLG DOOR, THE AFT SIDE COVER ASSEMBLY, AND THE MIDDLE FUSELAGE SKIN ASSY. AFTER FURTHER INSP THE LT EMERG MLG DOOR UPLOCK RELEASE CABLE WS FOUND BROKEN AT THE ROD END ADJACENT TO THE DOOR UPLOCK
- [SDR 96ZZZX5601](https://openairdocs.org/sdr/96ZZZX5601.md): Control Cable · failed · Oct 8, 1996 · N75BL · Mtsbsi MU300 · Landing Gear Door Retract Section
  > DURING ROUTINE A-CHECK INSPECTION WHILE PERFORMING EMERGENCY GEAR EXTENSION CHECK, RIGHT HAND GEAR DOOR WOULD NOT OPEN. INVESTIGATED DISCREPANCY AND FOUND SWAGED TERMINAL END ON DOOR CABLE BROKEN OFF. IN AN ACTUAL IN-FLIGHT EMERGENCY, THE RT MAIN LANDING GEA
- [SDR 96ZZZX4336](https://openairdocs.org/sdr/96ZZZX4336.md): Bypass Duct · failed · Jul 19, 1996 · N83BG · Mtsbsi MU300 · Turbine Engine Compressor Section
  > A CRACK DEVELOPED AT THE FORWARD FLANGE OF THE AFT INNER BYPASS DUCT AT THE 6 O'CLOCK POSITION ALLOWING IT TO COME OUT OF THE MATING FLANGE AND ENTER THE AIR FLOW, THEREBY CAUSING A 3 INCH (APPROX) SECTION TO PEEL BACK AND CAUSE A 2 INCH (APPROX) TEAR ALONG TH
- [SDR 96ZZZX834](https://openairdocs.org/sdr/96ZZZX834.md): Bushings · seized · Feb 2, 1996 · N399RP · Mtsbsi MU300 · Landing Gear Retraction/Extension System
  > UPPER TORQUE KNEE PIVOT BUSHINGS WOULD NOT ACCEPT GREASE. DISASSEMBLED TORQUE KNEE FROM AIRCRAFT AND FOUND GREASE HOLE IN BUSHING NOT ALIGNED WITH GALLERY IN CASTING. BUSHINGS SHOW NO EVIDENCE OF SPINNING IN CASTINGS. THIS CONDITION FOUND ON BOTH MAIN GEAR

## 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 = 'MU300'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/model/mitsubishi-mu-300/reports

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