# Service difficulty reports: N139FW A list on [N139FW](https://openairdocs.org/aircraft/N139FW.md). Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model. Newest first. - [SDR AC2A2023050213901](https://openairdocs.org/sdr/AC2A2023050213901.md): Boot · torn · May 1, 2023 · N139FW · Agusta AB139 · Main Rotor Mast/Swashplate > THE NEW DESIGN SWASHPLATE BOOT P/N 3G6230L01851 SEPARATED AND TORE AFTER 13.3 HOURS OPERATING TIME. BOOT WAS REMOVED AND SPLIT BOOT P/N 3G6230A06231 WAS INSTALLED. - [SDR AC2A2021101513902](https://openairdocs.org/sdr/AC2A2021101513902.md): Cooling Fan · contaminated · Oct 15, 2021 · N139FW · Agusta AB139 · Rotorcraft Cooling Fan System > MAIN GEARBOX OIL COOLER FAN WAS REMOVED AND REPLACED DUE TO MGB FAN QUILL SEAL LEAKING ALLOWING OIL TO MIGRATE TO FAN BEARINGS. SEE SDR AC2A2021101513901 FOR SDR ON SEAL. - [SDR AC2A2021101513901](https://openairdocs.org/sdr/AC2A2021101513901.md): Seal · leaking · Oct 15, 2021 · N139FW · Agusta AB139 · Rotorcraft Cooling Fan System > MAIN GEARBOX OIL COOLER FAN DRIVE SEAL LEAKING - [SDR AC2A2021051713902](https://openairdocs.org/sdr/AC2A2021051713902.md): Clamp · worn · May 15, 2021 · N139FW · Agusta AB139 · Tail Rotor Gearbox > CLAMPED ADAPTER P/N 3G6320A16551, S/N DAT197 AND ADAPTER CLAMPS P/N 3G6320A16651, S/N AVI 0406 WERE REMOVED FROM MGB 3G6320A00134, S/N V44 IN PREPARATION FOR SHIPMENT OF MGB IN FOR OVERHAUL. ADAPTER AND CLAMPS DISPLAY EVIDENCE OF SIGNIFICANT WEAR OF 0.010" ON - [SDR AC2A2021051713901](https://openairdocs.org/sdr/AC2A2021051713901.md): Adapter · worn · May 15, 2021 · N139FW · Agusta AB139 · Tail Rotor Gearbox > CLAMPED ADAPTER P/N 3G6320A16551, S/N DAT197 AND ADAPTER CLAMPS P/N 3G6320A16661, S/N AVI 0406 WERE REMOVED FROM MGB 3G6320A001434, S/N V44 IN PREPARATION FOR SHIPMENT OF MGB IN FOR OVERHAUL. ADAPTER AND CLAMPS DISPLAY EVIDENCE OF SIGNIFICANT WEAR OF 0.010" O - [SDR AC2A2021061013901](https://openairdocs.org/sdr/AC2A2021061013901.md): Cooling Fan · leaking · Apr 24, 2021 · N139FW · Agusta AB139 · Rotorcraft Cooling Fan System > OIL COOLER FAN WAS REMOVED AND REPLACED DUE TO MGB FAN QUILL SEAL LEAKING ALLOWING OIL TO MIGRATE TO FAN BEARINGS. TEARDOWN REPORT INDICATES BEARINGS WORN AND REPLACED WITH ONLY 284.4 HOURS SINCE OVERHAUL. - [SDR AC2A2021033113901](https://openairdocs.org/sdr/AC2A2021033113901.md): Blade · debonded · Mar 28, 2021 · N139FW · Agusta AB139 · Main Rotor Blades > MAIN ROTOR BLADE TIP CAP ATTACHMENT BOND LINE SEPARATION. - [SDR AC2A2021061013903](https://openairdocs.org/sdr/AC2A2021061013903.md): Cooling Fan · leaking · Oct 11, 2020 · N139FW · Agusta AB139 · Rotorcraft Cooling Fan System > OIL COOLER FAN WAS REMOVED AND REPLACED DUE TO MGB FAN QUILL SEAL LEAKING ALLOWING OIL TO MIGRATE TO FAN BEARINGS. TEARDOWN REPORT INDICATES BEARINGS WORN AND REPLACED WITH ONLY 13.7HOURS SINCE LAST OVERHAUL - [SDR AC2A2020091813901](https://openairdocs.org/sdr/AC2A2020091813901.md): Boot · torn · Sep 7, 2020 · N139FW · Agusta AB139 · Main Rotor Mast/Swashplate > MAIN ROTOR UPPER SWASHPLATE BOOT TORN, METAL RINGS LOOSE, NO ACCEPT/REJECT CRITERIA PROVIDED BY MANUFACTURER, NO DETAILED INSPECTION CRITERIA AVAILABLE. - [SDR AC2A2021061013902](https://openairdocs.org/sdr/AC2A2021061013902.md): Cooling Fan · leaking · Jul 3, 2020 · N139FW · Agusta AB139 · Rotorcraft Cooling Fan System > OIL COOLER FAN WAS REMOVED AND REPLACED DUE TO MGB FAN QUILL SEAL LEAKING ALLOWING OIL TO MIGRATE TO FAN BEARINGS. TEARDOWN REPORT INDICATES BEARINGS WORN AND REPLACED WITH ONLY 464.1 HOURS SINCE OVERHAUL. - [SDR AC2A2020012483901](https://openairdocs.org/sdr/AC2A2020012483901.md): Ring · unstaked · Jan 18, 2020 · N139FW · Agusta AB139 · Rotor Drive Indicating System > DURING DAILY INSPECTION, NOTICED RIGHT SIDE MAIN GEARBOX CHIP DETECTOR NOT FULLY ENGAGED. UPON INVESTIGATION, FOUND RETENTION RING FOR CHIP DETECTOR HAD BECOME UN-STAKED FROM CHIP DETECTOR BODY. - [SDR AC2A2009092783295](https://openairdocs.org/sdr/AC2A2009092783295.md): Pressure Switch · failed · Sep 27, 2009 · N139FW · Agusta AB139 · Hydraulic System, Main > NR 1 SERVO CAS ILLUMINATED IN FLIGHT. COMPLIED WITH HYD SERVO MALFUNCTION EMERGENCY PROCEDURES AND RETURNED TO BASE. REPLACED 31 HYD SERVO SWITCH. - [SDR AC2A2009092283308](https://openairdocs.org/sdr/AC2A2009092283308.md): Switch · defective · Sep 22, 2009 · N139FW · Agusta AB139 · Hydraulic System, Main > IN CRUISE FLIGHT, NR 1 SERVO CAUTION LIGHT CAME ON. CHECKED HYD SCHEMATIC PAGE WHICH SHOWED ALL NT 1 SYS SERVOS IN YELLOW, REFERENCED EMERGENCY PROCEDURES CHECKLIST FOR NR 1 SERVO CAUTION LIGHT. LOWERED LANDING GEAR AND RETURNED TO DEPARTURE. DEFECTIVE SWITCH - [SDR AC2A116357](https://openairdocs.org/sdr/AC2A116357.md): Cowling · burned · Jul 6, 2007 · N139FW · Agusta AB139 · Nacelle/Pylon, Main Frame > COWLING WAS FOUND BURNED DURING EXHAUST BRACKET REPLACEMENT. BURNED AREA WAS APPROXIMATELY (2) INCHES BY (3) INCHES. COWLING WAS REPAIRED AND RETURNED TO SERVICE. ALL OTHER AIRCRAFT IN FLEET WERE INSPECTED AND FOUND OK PHOTO OF COWLING HAS BEEN SENT TO FSDO - [SDR AC2A2007032871967](https://openairdocs.org/sdr/AC2A2007032871967.md): Screen · broken · Mar 28, 2007 · N139FW · Agusta AB139 · Engine Air Intake System > NR 1 ENGINE INLET SCREEN HAS BROKEN WIRES. - [SDR AC2A113325](https://openairdocs.org/sdr/AC2A113325.md): Attach Fitting · cracked · Dec 18, 2006 · N139FW · Agusta AB139 · Rotorcraft Tail Boom > CRACKS FOUND IN FITTING AT UPPER LT TAILBOOM ATTACHMENT POINT RADIATING FROM HI-LOCS. - [SDR AC2A110571](https://openairdocs.org/sdr/AC2A110571.md): Exhaust Stack · cracked · Aug 1, 2006 · N139FW · Agusta AB139 · Engine Collector/Tailpipe/Nozzle > DURING NORMAL PROCEDURES COPILOT WAS ASSISTING DEPARTING PASSENGERS AND LUGGAGE, HE NOTICED THE NR 1 EXHAUST STACK CRACKED AND FOLDED BACK. AFTER SHUTDOWN AND FURTHER INSPECTION FOUND THE STACK CRACKED ABOUT 12 INCHES ALONG THE LOWER WELD SEAM AND IB CRACK ABO - [SDR AC2A110529](https://openairdocs.org/sdr/AC2A110529.md): Power Lever · damaged · Jul 22, 2006 · N139FW · Agusta AB139 · Power Lever > NR 1 ENGINE TRIM WAS INOPERABLE AND ECL 1 CAS MESSAGE. FOUND LEVER PIN SHEARED/REPLACED POWER LEVER QUADRANT. ## 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 = 'N139FW' AND registry_match = 'registration' ORDER BY difficulty_date DESC ``` This list as a web page: https://openairdocs.org/aircraft/N139FW/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.