# Service difficulty reports: N863AF A list on [N863AF](https://openairdocs.org/aircraft/N863AF.md). Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model. Newest first. - [SDR 2011FA0000149](https://openairdocs.org/sdr/2011FA0000149.md): Pump · failed · Mar 3, 2011 · N863AF · Grob G120A · Engine Fuel Pump > AFTER INSTALLING ENGINE DRIVEN FUEL PUMP ON THE ENG, MECHANIC WENT OUT TO PERFORM AN ENGINE OPS CHECK AND FOUND ENGINE WOULDN’T KEEP RUNNING UNLESS BOOST PUMP WAS IN THE ON POSITION. UPON TROUBLESHOOTING MECHANIC FOUND THE SHAFT WAS SHEARED ON THE FUEL PUMP. - [SDR 2011FA0000148](https://openairdocs.org/sdr/2011FA0000148.md): Pump · leaking · Mar 3, 2011 · N863AF · Grob G120A · Engine Fuel Pump > MECHANIC PERFORMED A LEAK CHECK AFTER INSTALLING ENGINE DRIVEN FUEL PUMP ON THE ENGINE AND FOUND FUEL LEAKING FROM SHAFT DRIVE. NO PROBABLE CAUSE OR RECOMMENDATIONS AT THIS TIME. - [SDR 2005FA0000800](https://openairdocs.org/sdr/2005FA0000800.md): Plate · debonded · May 13, 2005 · N863AF · Grob G120A · Rudder, Spar/Rib > DURING FLEET - WIDE INSPECTION OF AIRCRAFT, TECH FOUND EXCESSIVE MOVEMENT BETWEEN RUDDER AND RUDDER LEVER ASSY. FURTHER INSPECTION SHOWED DISBONDING BETWEEN THE RUDDER SPAR AND THE RUDDER LEVER ASSY SPACER PLATE. PROBABLE CAUSE APPEARS TO BE EXCESSIVE FLEXIN - [SDR 2005FA0000650](https://openairdocs.org/sdr/2005FA0000650.md): Hinge · cracked · Mar 28, 2005 · N863AF · Grob G120A · Aileron Control System > ON ROUTINE PHASE INSPECTION, MECHANIC FOUND HINGE ON LT AILERON TRIM TAB CRACKED AT ATTACH POINT FOR PUSH PULL ROD. CAUSE AT THIS TIME UNKNOWN, NO RECOMMENDATIONS AT THIS TIME. (K) - [SDR 2005FA0000648](https://openairdocs.org/sdr/2005FA0000648.md): Hinge · cracked · Mar 28, 2005 · N863AF · Grob G120A · Aileron Control System > ON ROUTINE PHASE INSPECTION, MECHANIC FOUND HINGE ON RT AILERON TRIM TAB CRACKED AT ATTACH POINT FOR PUSH PULL ROD. CAUSE AT THIS TIME UNKNOWN, NO RECOMMENDATIONS AT THIS TIME. (K) - [SDR 2005FA0000150](https://openairdocs.org/sdr/2005FA0000150.md): Swivel · cracked · Nov 24, 2004 · N863AF · Grob G120A · Nose/Tail Landing Gear > INSPECTION OF NOSE GEAR UPPER TRUNNION BOLTS FOUND CRACKS AROUND WELDS AND ON THE EARS FOR THE SWIVEL TUBE. PROBABLE CAUSE EXCESSIVE STRESSES IN THIS AREA. AT THIS TIME NO RECOMMENDATION UNTIL MFG MAKES DETERMINATION OF CAUSES. (K) - [SDR 2005FA0001123](https://openairdocs.org/sdr/2005FA0001123.md): Servo · inoperative · Nov 8, 2004 · N863AF · Grob G120A · Fuel Controlling System > PILOT REPORTED LOW FUEL FLOW ON TAKEOFF, UPON FURTHER INVESTIGATION THE MECHANIC FOUND THE FUEL FLOW WAS AT 149 PPH UNTIL THE ENGINE GOT HOT THEN THE FUEL FLOW DROPPED DOWN TO 142-144 PPH. NO RECOMMENDATION AT THIS TIME. (K) - [SDR 2003FA0001124](https://openairdocs.org/sdr/2003FA0001124.md): Relay · shorted · Oct 21, 2003 · N863AF · Grob G120A · Landing Gear Position and Warning > DURING FLIGHT, GEAR MOTOR WAS SLOW TO EXTEND LANDING GEAR. FURTHER INVESTIGATION DETERMINED THAT EXTENSION VALVE HAD A RESTRICTION IN THE LINE WHICH CAUSED THE LANDING GEAR MOTOR TO REQUIRE MORE CURRENT BECAUSE OF THIS DEMAND IT CAUSED THE LANDING GEAR RELAY - [SDR 2003FA0001123](https://openairdocs.org/sdr/2003FA0001123.md): Diode · shorted · Oct 21, 2003 · N863AF · Grob G120A · Landing Gear Position and Warning > DURING FLIGHT, WHEN GEAR IS INTRANSIT, HYDRAULIC PRESSURE ANNUNCIATOR LIGHT ILLUMINATES. CAUSE OF MALFUNCTION IS UNKNOWN. NO RECOMMENDATION AT THIS TIME. - [SDR 2003FA0001111](https://openairdocs.org/sdr/2003FA0001111.md): Relay · failed · Oct 15, 2003 · N863AF · Grob G120A · Landing Gear Retraction/Extension System > FOLLOWING AN EMERGENCY GEAR EXTENSION, PERFORMED DURING A ROUTINE INSPECTION, SYSTEM WOULD NOT OPERATE. FAULT DETERMINED TO BE FAILED RELAY FOR HYDRAULIC CONTROL. PROBABLE CAUSE, TO MUCH LOAD FOR RELAY. MANUFACTURER CONTACTED AND MANUFACTURER STATED THAT A - [SDR 2003FA0001014](https://openairdocs.org/sdr/2003FA0001014.md): Lever · binding · Sep 29, 2003 · N863AF · Grob G120A · Aileron Control System > DURING FLEET WIDE INSPECTION, FOUND BEARINGS IN AILERON LEVER 2 ASSY. PN 120A-4242 TO BE DAMAGED AND BINDING. DAMAGE APPEARS TO BE CAUSED BY THE BUSHING PN 120A-4435..02 IN THE FORK ENDS PN 120A4435.01. IT APPEARS THAT DESIGN LIMITATIONS OF THE FLIGHT CONTR - [SDR 2003FA0000558](https://openairdocs.org/sdr/2003FA0000558.md): Bearing · failed · May 12, 2003 · N863AF · Grob G120A · Aileron Control System > DURING INSPECTION OF AIRCRAFT, FOUND BEARING TO BE FAILING. RETAINING CLIP AND SEAL WERE BEING FORCED OUT OF BEARING. PROBABLE CAUSE IS A DESIGN FLAW IN THE CONTROL SYSTEM WHICH ALLOWS THE CONTROL ROD DEFLECTION TO EXCEED THE DESIGN LIMIT OF THE BEARING. - [SDR 2003FA0000545](https://openairdocs.org/sdr/2003FA0000545.md): Bearing · failed · May 12, 2003 · N863AF · Grob G120A · Elevator Control System > DURING INSPECTION OF AIRCRAFT, FOUND BEARING TO BE FAILING. RETAINING CLIP AND SEAL WERE BEING FORCED OUT OF BEARING. PROBABLE CAUSE IS A DESIGN FLAW IN THE CONTROL SYSTEM WHICH ALLOWS THE CONTROL ROD DEFLECTION TO EXCEED THE DESIGN LIMIT OF THE BEARING. RE - [SDR 2003FA0000536](https://openairdocs.org/sdr/2003FA0000536.md): Bearing · failed · May 12, 2003 · N863AF · Grob G120A · Aileron Control System > DURING INSPECTION OF AIRCRAFT, FOUND BEARING TO BE FAILING. RETAINING CLIP AND SEAL WERE BEING FORCED OUT OF BEARING. PROBABLE CAUSE IS A DESIGN FLAW IN THE CONTROL SYSTEM WHICH ALLOWS THE CONTROL ROD DEFLECTION TO EXCEED THE DESIGN LIMIT OF THE BEARING. - [SDR 2003FA0000492](https://openairdocs.org/sdr/2003FA0000492.md): Seal · leaking · Apr 28, 2003 · N863AF · Grob G120A · Engine Fuel Pump > FLIGHT CREW NOTICED ODOR OF FUEL DURING GROUND RUN. TECHNICIAN TROUBLESHOOT FUEL SYSTEM AND NOTICED FUEL STAINS ON FUEL PUMP. SO REPLACED FUEL PUMP. ONCE PUMP REMOVED NOTICED GEAR SPLINE WAS WORN DASTRICALLY. - [SDR VJ32002F00047](https://openairdocs.org/sdr/VJ32002F00047.md): Baffle · cracked · May 23, 2002 · N863AF · Grob G120A · Reciprocating Engine Cylinder Section > ENGINE BAFFLE CRACKED ON NR 1 CYLINDER. PART REMOVED AND NEW BAFFLE INSTALLED. PART SENT FOR WARRANTY. - [SDR VJ32002F00041](https://openairdocs.org/sdr/VJ32002F00041.md): Clock · broken · May 20, 2002 · N863AF · Grob G120A · Independent Instruments > LEFT HAND STOP PIN BROKEN OFF. REMOVED AND REPLACED NEW CLOCK. - [SDR VJ32002F00040](https://openairdocs.org/sdr/VJ32002F00040.md): Rod · chafed · May 20, 2002 · N863AF · Grob G120A · Elevator Control System > ELEVATOR CONTROL ROD RUBBING AILERON CROSS OVER TUBE. REMOVED TUBE AND INSTALLED NEW TUBE. NEW SHIM PLATES INSTALLED, TO CORRECT PROBLEM. - [SDR VJ32002F00039](https://openairdocs.org/sdr/VJ32002F00039.md): Rod · chafed · May 20, 2002 · N863AF · Grob G120A · Aileron Control System > AILERON ROD RUBBING AILERON BELL CRANK. REMOVED ROD AND INSTALLED NEW ROD. CONTROL ASSEMBLY WAS SHIMMED TO CORRECT THE PROBLEM. - [SDR VJ32002F00031](https://openairdocs.org/sdr/VJ32002F00031.md): Pump · inoperative · May 7, 2002 · N863AF · Grob G102ASTIR · Engine Fuel Pump > AT 800 RPM THE FUEL PRESSURE DROPS BELOW MINIMUM AND THE LOW PRESSURE LIGHT CAME ON AT IDLE. SYSTEM WAS CHECKED AND FOUND THAT THE PUMP OUT PUT WAS LOW. PUMP REMOVED AND A NEW PUMP INSTALLED. GROUND RUN AND FINAL ADJUSTMENTS TO THE PUMP WERE MADE. OPERATIO - [SDR VJ32002F00029](https://openairdocs.org/sdr/VJ32002F00029.md): Bracket · cracked · Apr 26, 2002 · N863AF · Grob G102ASTIR · AC Generation System > ALTERNATOR SUPPORT BRACKET CRACKED. PART REMOVED AND A NEW SUPPORT BRACKET INSTALLED. PART SENT IN FOR WARRANTY. - [SDR 2002FA0000484](https://openairdocs.org/sdr/2002FA0000484.md): Audio Panel · failed · Apr 5, 2002 · N863AF · Grob G102ASTIR · Central Warning > AUDIO PANEL FAIL INTERNALLY GIVING AND UNSAFE GEAR INDICATION LIGHT, AND WHEN THE THROTTLE WAS PULLED TO IDLE, THE HYDRAULIC PUMP WOULD START TO RUN. REMOVED AND INSTALLED NEW AUDIO PANEL. THE LANDING GEAR OPERATIONAL CHECKED NORMAL. PART SENT IN FOR WARRAN - [SDR 2002FA0000483](https://openairdocs.org/sdr/2002FA0000483.md): Filter · inoperative · Apr 1, 2002 · N863AF · Grob G102ASTIR · Communications System > FEED BACK IN THE RADIOS, NEW FILTER INSTALLED, OPERATIONAL CHECK NORMAL. PART SENT IN FOR WARRANTY. - [SDR 2002FA0000482](https://openairdocs.org/sdr/2002FA0000482.md): Pump · inoperative · Apr 1, 2002 · N863AF · Grob G102ASTIR · Hydraulic Pump (Electric/Engine), Main > ELECTRIC MOTOR SLOW IN FLIGHT, OVER 25 TO 30 SECONDS TO RETRACT AND EXTENT THE LANDING GEAR. NEW HYDRAULIC PUMP ASSEMBLY INSTALLED, CYCLED GEAR IAW MAINTENANCE MANUAL, LANDING GEAR OPERATIONAL CHECKED NORMAL. PART SENT IN FOR WARRANTY. ## 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 = 'N863AF' AND registry_match = 'registration' ORDER BY difficulty_date DESC ``` This list as a web page: https://openairdocs.org/aircraft/N863AF/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.