# Service difficulty reports: JASC 6540 A list on [JASC 6540](https://openairdocs.org/jasc/6540.md). Reports filed under 6540 · Tail Rotor Drive Indicating System, newest first. - [SDR HEEA202508080001](https://openairdocs.org/sdr/HEEA202508080001.md): Warning Light · illuminated · Aug 5, 2025 · N951PH · Skrsky S92A > DURING CRUISE FLIGHT, IGB CHIP LIGHT ILLUMINATED. LANDED BACK AT DESTINATION PLATFORM. - [SDR HEEA202502200001](https://openairdocs.org/sdr/HEEA202502200001.md): Chip Detector · loose · Feb 18, 2025 · N935PH · Skrsky S92A > DURING CRUISE FLIGHT, IGB HOT LIGHT ILLUMINATED. - [SDR HEEA202409060001](https://openairdocs.org/sdr/HEEA202409060001.md): Connector · dirty · Sep 3, 2024 · N951PH · Skrsky S92A > CHIP SYSTEMS FAULT AND IGB OIL HOT LIGHT ILLUMINATED. - [SDR 2022FA0000655](https://openairdocs.org/sdr/2022FA0000655.md): Tachometer · failed · Oct 28, 2022 · N340SF · Bolkms BK117C2 > 1&2 NP AND ROTOR RPM INDICATOR (TRIPLE TAC) WAS INOP DURING THE START SEQUENCE. - [SDR QMLA2020071420035](https://openairdocs.org/sdr/QMLA2020071420035.md): Chip Detector · contaminated · Jul 14, 2020 · N693AM · Bell 407 > PILOT WAS REPOSITIONING THE AIRCRAFT TO THE HOSPITAL FROM THE AIRPORT AND UPON REACHING APPROXIMATELY 300' AGL AFTER TAKEOFF HE RECEIVED A TAIL ROTOR CHIP WARNING INDICATION ON THE PFD. THE PILOT IMMEDIATELY RETURNED BACK TO THE AIRPORT. TWO MECHANICS INSPEC - [SDR QMLA2020052120020](https://openairdocs.org/sdr/QMLA2020052120020.md): Chip Detector · dirty · May 20, 2020 · N293AM · Bell 407 > TAIL ROTOR GEARBOX CHIP LIGHT INDICATION IN FLIGHT. PRECAUTIONARY LANDING WAS PERFORMED AS PER THE RFM. THE MECHANIC ARRIVED TO INSPECT THE AIRCRAFT AND FOUND ONE HAIR-LIKE PARTICLE ON CHIP DETECTOR. CLEANED AND REINSTALLED DETECTOR. A TEN MINUTE GROUND RUN WA - [SDR QMLA2016061816067](https://openairdocs.org/sdr/QMLA2016061816067.md): Chip Detector · contaminated · Jun 18, 2016 · N103VU · Bolkms BK117C2 > PILOT REPORTED TAIL ROTOR GEARBOX CHIP DETECTOR ILLUMINATION. HE WAS ABLE TO USE THE FUZZ BURNER SUCCESSFULLY 2 TIMES. AFTER THE THIRD ATTEMPT HE WAS ON APPROACH. UPON MAINTENANCE INSPECTION OF THE TAIL ROTOR GEARBOX CHIP DETECTOR THERE WAS AN ABNORMAL AMOUN - [SDR M3XA2016042804](https://openairdocs.org/sdr/M3XA2016042804.md): Chip Detector · activated · Apr 28, 2016 · N241MT · Bell 407 > IN CRUSE FLIGHT WITH PATIENT ON BOARD, TR CHIP LIGHT ILLUMINATED. ACFT SAFELY LANDED. PERFORMED INSPECTION IAW MM. ACFT BIS. - [SDR QMLA2016011916002](https://openairdocs.org/sdr/QMLA2016011916002.md): Chip Detector · contaminated · Jan 19, 2016 · N150AM · Bell 407 > TAIL ROTOR CHIP LIGHT ILLUMINATED IN FLIGHT. PERFORMED PRECAUTIONARY LANDING AT NEARBY AIRFIELD. FOUND ONE SMALL SLIVER ON TAIL ROTOR CHIP PLUG. GEARBOX WAS RECENTLY REPLACED, DETERMINED TO MOST LIKELY BE BREAK IN WEAR. - [SDR M3XA2016010601](https://openairdocs.org/sdr/M3XA2016010601.md): Chip Detector · contaminated · Jan 6, 2016 · N135VV · Urocop EC135P2 > PILOT WAS AT CRUISE ALTITUDE CARRYING A PATIENT, WHEN HE ENCOUNTERED A TRANSMISSION CHIP LIGHT. THE INDICATION WAS ENCOUNTERED WITHIN CLOSE PROXIMITY TO THE HOSPITAL IN WHICH A PRECAUTIONARY LANDING WAS MADE. UPON LANDING, THE LIGHT HAD EXTINGUISHED. THE ME - [SDR 9EKA20151201026](https://openairdocs.org/sdr/9EKA20151201026.md): Chip Detector · activated · Dec 1, 2015 · N214EB · Bell 214ST > PILOT REPORTED MOMENTARY TAIL ROTOR GEAR BOX CHIP LIGHT ON MASTER CAUTION PANEL. - [SDR QMLA2015103115101](https://openairdocs.org/sdr/QMLA2015103115101.md): Chip Detector · carboned · Oct 31, 2015 · N558AM · Snias AS350B2 > WHILE EN-ROUTE TO A LOCAL HOSPITAL FOR A PATIENT TRANSFER, THE TAIL ROTOR GEARBOX CHIP LIGHT ILLUMINATED INFLIGHT WITHOUT SECONDARY’S. THE PILOT IMMEDIATELY INFORMED THE CREW & AIR COM THAT THEY WERE ABORTING THE FLIGHT FOR MX & PROCEEDING BACK TO BASE. THE - [SDR 2015F00091](https://openairdocs.org/sdr/2015F00091.md): Warning Light · false activation · Jul 28, 2015 · N240SF · Bolkms BK117C2 > TAIL ROTOR GEARBOX CHIP LIGHT OCCURRED OVER AIRPORT, MADE PRECAUTIONARY LANDING. FINISHED PATIENT TRANSPORT BY GND AMBULANCE. - [SDR QMLA2014092714115](https://openairdocs.org/sdr/QMLA2014092714115.md): Chip Detector · contaminated · Sep 27, 2014 · N193AM · Bell 407 > EN ROUTE TO A PR EVENT, TAIL ROTOR CHIP LIGHT ILLUMINATE CAUSING AN UNSCHEDULED LANDING. REMOVED & EXAMINED THE MAGNETIC CHIP PLUG & FOUND A SMALL HAIR LIKE METAL SLIVER. THIS PARTICLE WAS REMOVED, CHIP DETECTOR CLEANED & THE PLUG REINSTALLED. GND RAN ACFT - [SDR QMLA2014060214063](https://openairdocs.org/sdr/QMLA2014060214063.md): Chip Detector · contaminated · Jun 2, 2014 · N145LF · Bolkms BK117C2 > TAIL ROTOR CHIP CAUTION ILLUMINATED ON CAD DURING POWER UP. REMOVED TAIL ROTOR CHIP PLUG & FOUND ONE TINY SLIVER APPROXIMATELY THE SIZE OF A HAIR & 1 - 2 MM IN LENGTH. CLEANED CHIP PLUG & REINSTALLED. PERFORMED OPERATIONS CHECK & 10 MINUTE GND RUN WITH NO R - [SDR HEEA117201](https://openairdocs.org/sdr/HEEA117201.md): Sensor · malfunctioned · Sep 1, 2007 · N992PH · Skrsky S92A > DURING CRUISE INTERMEDIATE GEARBOX HOT LIGHT ILLUMINATED. PERFORMED EMERGENCY PROCEDURE. RETURNED TO HBP. LIGHT CAME ON AND OFF DURING RETURN FLIGHT. REPLACED CHIP DETECTOR-TEMP SENSOR AND HOUSING. - [SDR 2004F00368](https://openairdocs.org/sdr/2004F00368.md): Warning Light · illuminated · Jul 21, 2004 · N864AL · Skrsky S76C > DURING TAKEOFF, INTERMEDIATE/TAIL ROTOR GEAR BOX LIGHT CAME ON DURING TAKEOFF, CIRCUIT BREAKER WAS PULLED, LIGHT WENT OUT, RESET CIRCUIT BREAKER, LIGHT CAME BACK ON. AIRCRAFT WAS LANDED BACK ON RIGHT AT ST164. MAINTENANCE REMOVED INTERMEDIATE AND TAIL ROTOR - [SDR BAQA091483](https://openairdocs.org/sdr/BAQA091483.md): Chip Detector · loose · Dec 10, 2003 · N135LC · Urocop EC135T1 > CHIP DETECTOR STAKE IN PLUG LET GO ALLOWING CONNECTOR END TO ROTATE. ERIC SAID TO SCRAP ON SITE. FAX SCRAP CERT. AND MMIR TO HIM. THIS WAS DONE 12/10/03. - [SDR HEEA088046](https://openairdocs.org/sdr/HEEA088046.md): Chip Detector · broken · Jul 4, 2003 · N1546G · Skrsky S76A > ELECTRICAL PINS BROKEN. REPLACED WITH SERVICEABLE PART. - [SDR I05R086500](https://openairdocs.org/sdr/I05R086500.md): Chip Detector · inoperative · May 12, 2003 · N135BP · Urocop EC135P1 > TAIL ROTOR GEARBOX CHIP CONTINUITY CAUTION, REPLACED DETECTOR. - [SDR BAQA085943](https://openairdocs.org/sdr/BAQA085943.md): Indicator · intermittent · Apr 10, 2003 · N952CJ · Bolkms BK117A3 > ROTOR TACH INTERMITTENT. REPLACED WITH SERVICEABLE UNIT. 4/10/03 - [SDR LS1R066445](https://openairdocs.org/sdr/LS1R066445.md): Bearing · rough · Feb 29, 2000 · N51AG · Bell UH1H > BEARING EXTREMELY ROUGH, AND RATCHETY. ## 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 jasc_code = '6540' ORDER BY difficulty_date DESC ``` This list as a web page: https://openairdocs.org/jasc/6540/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.