# Service difficulty reports: JASC 6122 A list on [JASC 6122](https://openairdocs.org/jasc/6122.md). Reports filed under 6122 · Propeller Governor, newest first. Page 1 of 15 · 708 reports - [SDR 2026FA0000649](https://openairdocs.org/sdr/2026FA0000649.md): Governor · failed · Aug 17, 2026 > MCCAULEY PROP GOVERNOR SENT IN FOR DIAGNOSING AN INFLIGHT PROBLEM. AS RECEIVED THE GOVERNOR WOULDN'T TURN. REMOVED THE BASE AND FOUND THE IDLER GEAR BEARING HAD COME APART AND FOUND METAL CONTAMINATION FOUND IN PUMP AREA. ADVISED CUSTOMER TO CHECK FILTER AND G - [SDR 2026FA0000552](https://openairdocs.org/sdr/2026FA0000552.md): Tube · cracked · Jun 21, 2026 · Bag JETSTM3201 > AIRCRAFT EXPERIENCED A LOW OIL PRESSURE INDICATION AND ILLUMINATION OF THE OIL WARNING LIGHT ON THE RIGHT-HAND (RT) ENGINE DURING THE CRUISE PHASE OF FLIGHT 4761. THE FLT CREW CARRIED OUT THE EMERGENCY SHUTDOWN PROCEDURE IAW MAINT & OPS MANUAL (MOM 3) & RETURN - [SDR N3XR202603200001](https://openairdocs.org/sdr/N3XR202603200001.md): Governor · overspeed · Mar 12, 2026 · N302ER · Diamon DA42NG > DURING THE CLIMB, THE LEFT ENGINE EXPERIENCED AN RPM OVERSPEED. THE GOVERNOR WAS REPLACED. - [SDR N3XR202603020002](https://openairdocs.org/sdr/N3XR202603020002.md): Governor · inoperative · Feb 27, 2026 · N319ER · Diamon DA42 > LEFT ENGINE OVERSPEED. RPM'S STARTED TO INCREASE WITH POWER BEING BROUGHT BACK TO ZERO %. - [SDR N3XR2026030201](https://openairdocs.org/sdr/N3XR2026030201.md): Governor · inoperative · Feb 25, 2026 · N309ER · Diamon DA42NG > LT ENG CONSTANT OVERSPEED EVEN WITH THROTTLE PULLED BACK, - [SDR UOIA2025042500006](https://openairdocs.org/sdr/UOIA2025042500006.md): Shaft · broken · Apr 25, 2025 · N903GD · Bnorm BN2A8 > AT LANDING IN VIEQUES AIRPORT RIGHT ENGINE PRESENTED EXCESSIVE VIBRATION SO PILOT PERFORMED PREVENTIVE SHUTDOWN. ENGINE WAS INSPECTED AND FOUND THE PROPELLER GOVERNOR SHAFT BROKEN. PROPELLER GOVERNOR WAS REMOVED AND AN OVERHAULED PROPELLER GOVERNOR INSTALLED. - [SDR 2025F00108](https://openairdocs.org/sdr/2025F00108.md): Shaft · broken · Apr 25, 2025 · N903GD · Bnorm BN2A8 > AT LANDING IN VIEQUES AIRPORT RIGHT ENGINE PRESENTED EXESIVE VIBRATION, PILOT PERFORMED PREVENTIVE SHUTDOWN. ENGINE WAS INSPECTED AND FOUND THE PROPELLER GOVERNOR SHAFT BROKEN. PROPELLER GOVERNOR WAS REMOVED AND OVERHAULED PROPELLER GOVERNOR INSTALLED. OPERATI - [SDR CVGA20250218003](https://openairdocs.org/sdr/CVGA20250218003.md): Governor · faulty · Feb 12, 2025 · N891UP · Beech B300 > LEFT PROP STUCK AT 1570 RPM IN FLIGHT - EMERGENCY DECLARED - TROUBLESHOOTING ISOLATED TO PROPELLER PRIMARY GOVERNOR. REMOVED LEFT ENG PROP GOVERNOR P/N 8210-310 S/N 20572154, INSTALLED REPAIRED GOVERNOR P/N 8210-310 S/N 11509197 PER P&WC PT6A-60A EMM CHAPT 61- - [SDR 2024FA0000855](https://openairdocs.org/sdr/2024FA0000855.md): Governor · abnormal · Nov 20, 2024 · N345CE · Cirrus SR22 > PILOT REPORTED A VIBRATION OR SURGE FROM PROPELLER WHEN DESCENDING OR LANDING. GOVERNOR SHOP REPORTED THE SPOOL VALVE IS THE PROBLEM AND EVEN THOUGH HE PURCHASES NEW SPOOL VALVE FROM HARTZELL. IT DOESN'T ALWAYS FIX IT, NEW SPOOL VALVES ARE DEFECTIVE. HAVE TO - [SDR 2023FA0000362](https://openairdocs.org/sdr/2023FA0000362.md): Gasket · unknown · Jun 13, 2023 · N969WP · Airtrc AT802A > AIRCRAFT HAD POWER SECTION AND GOVERNORS OVERHAULED AFTER PROP STRIKE INCIDENT. FIRST TEST RUN ON AIRCRAFT AFTER OVERSPEED GOVERNOR INSTALL, THE NEW GASKET WAS LEAKING FROM AROUND A STUD HOLE. WE RE-INSTALLED ORIGINAL GASKET AND NO LEAK. THIS IS THE SECOND ONE - [SDR JIKA2023060802](https://openairdocs.org/sdr/JIKA2023060802.md): Governor · failed · Jun 8, 2023 · N709TR · Swrngn SA227AC > AMF1351 - THE RIGHT ENGINE WAS NOT PRODUCING 100% POWER AND IT KEPT GETTING LOWER AND ENGINE TEMP CONTINUED TO RISE. ONCE HE WAS ON APPROACH INTO KABQ HE MADE THE DECISION TO SHUT DOWN THE ENGINE FOR THE LANDING. GROUND EMERGENCY RESPONSE WAS DISPATCHED. LANDE - [SDR 2022FA0000622](https://openairdocs.org/sdr/2022FA0000622.md): Governor · damaged · Oct 9, 2022 · N4305N · Piper PA28236 > DURING APPROACH TO LANDING, ENGINE DECREASED RPM UNCOMMANDED, PILOT NOTICED OIL COMING OUT OF THE COWLING ONTO THE WINDSHIELD. PILOT MADE AN UNEVENTFUL LANDING, TAXIED TO THE RAMP, SHUT DOWN, AND OBSERVED MASSIVE AMOUNTS OF OIL COMING OUT OF THE COWLING. DISCO - [SDR W59R15956](https://openairdocs.org/sdr/W59R15956.md): Bearing · failed · Sep 29, 2022 · N310LA · Cessna 310R > LEFT ENGINE ON AIRCRAFT WOULD NOT MAKE RPM OR CYCLE PROPELLER. BA59 BEARING FOUND IN LEFT ENGINE GOVERNOR, THIS UNIT THE RIGHT ENGINE PROPELLER GOVERNOR REMOVED TO INSPECT AS PRECAUTION AND TO COMPLY WITH AD 2020-19-06 AND MCCAULEY ASB273C. THIS GOVERNOR - [SDR W59R15971](https://openairdocs.org/sdr/W59R15971.md): Bearing · failed · Sep 29, 2022 · N310LA · Cessna 310R > ENGINE WOULD NOT MAKE RED LINE RPM OR CYCLE. GOVERNOR REMOVED, DRIVE GEAR WOULD NOT TURN. GOVERNOR DISASSEMBLED AND FOUND BA59 BEARING FAILED AS DESCRIBED IN AD 2020-19-06 AND MCCAULEY ASB273C. GOVERNOR OVERHAULED 30/NOV/2017 USING A NEW MCCAULEY A20107 IDLER - [SDR 2022FA0000403](https://openairdocs.org/sdr/2022FA0000403.md): Governor · inoperative · Jul 24, 2022 · N2345R · Piper PA23250 > LH PROPELLER GOVERNOR CAN NOT CONTROL PROPELLER RPM. SUSPECT PROP. GOVERNOR IS AT FAULT. REMOVED PROP. GOVERNOR AND SENT OUT FOR OVERHAUL. - [SDR 2022FA0000312](https://openairdocs.org/sdr/2022FA0000312.md): Governor · inoperative · Jun 19, 2022 · N8298P · Piper PA24250 > PILOTS INVOLVED REPORTED THE FOLLOWING: DURING CRUISE FLIGHT BY KEET THE PILOTS NOTED A SUDDEN DECREASE IN POWER FOLLOWED BY AN INCREASE IN ENGINE RPM. ENGINE RPM INDICATIONS ROSE TO OVER 3100 RPM ON THE ENGINE MONITORING DISPLAY. PILOTS BROUGHT MANIFOLD PRE - [SDR N3XR20220524001](https://openairdocs.org/sdr/N3XR20220524001.md): Governor · sticking · May 24, 2022 · N311ER · Diamon DA42 > DURING ECU SELF-TEST, AN ERROR MESSAGE APPEARED SHOWING TIME OUT. INSPECTION REVEALED A MALFUNCTIONING GOVERNOR. IT WAS REPLACED AND OPERATION CHECK WAS NORMAL. - [SDR N3XR202205240002](https://openairdocs.org/sdr/N3XR202205240002.md): Governor · inoperative · May 2, 2022 · N309ER · Diamon DA42 > SELF-TEST FAILURE DURING ECU SELF-TEST. REPLACED GOVERNOR. - [SDR N3XR 10_7_21](https://openairdocs.org/sdr/N3XR%2010_7_21.md): Governor · inoperative · Oct 7, 2021 · N308ER · Diamon DA42NG > LT. GOVERNOR FAILED TO MOVE IN FLIGHT. USING THE MT GOVERNOR TEST TOOL, THE GOVERNOR WAS OPERATED, THE CONNECTION CLEANED AND THE OPERATION WAS NORMAL. - [SDR N3XR 10_7_21_02](https://openairdocs.org/sdr/N3XR%2010_7_21_02.md): Governor · inoperative · Oct 6, 2021 · N309ER · Diamon DA42NG > ON TAKE-OFF RPM REMAINED AT 2400 AND ONLY CAME DOWN WHEN POWER WAS SET TO 30%. THE GOVERNOR WAS CHANGED...THIS OPERATOR HAS HAD REPEATED SIMILAR EVENTS - [SDR N3XR 10_7_21_03](https://openairdocs.org/sdr/N3XR%2010_7_21_03.md): Governor · inoperative · Sep 21, 2021 · N307ER · Diamon DA42NG > DURING PRE-TAKEOFF RUN-UP THE RIGHT ENGINE GOVERNOR FAILED TO PRODUCE THE CORRECT RPM. THE GOVERNOR WAS REPLACED - [SDR DATA07092021001](https://openairdocs.org/sdr/DATA07092021001.md): Governor · inoperative · Jul 7, 2021 · N764JR · Stbros SD360300 > AT 10,000 MSL ON CLIMB THE NUMBER 2 PROPELLER RPM SLOWLY STARTED TO DECREASE. AN ATTEMPT TO FORWARD THE PROPELLER LEVER CAUSED THE RPM DECREASE TO CONTINUE. THE ENGINE WAS SHUT DOWN IN FLIGHT, AN EMERGENCY WAS DECLARED AND THE CREW RETURNED THE AIRCRAFT TO THE - [SDR DATA2021043001](https://openairdocs.org/sdr/DATA2021043001.md): Governor · malfunctioned · Apr 30, 2021 · N3732X · Stbros SD360200 > DURING A TRAINING FLIGHT, WHEN SIMULATING THE V1 CUT THE LEFT PROPELLER TRIED TO GO INTO AUTOFEATHER AND THE ENGINE SURGED. NO SUBSEQUENT POWER SETTINGS AFFECTED THE PROBLEM SO THE LEFT ENGINE WAS SHUT DOWN, AN EMERGENCY WAS DECLARED AND AN UNEVENTFUL LANDING - [SDR UATA202104133317](https://openairdocs.org/sdr/UATA202104133317.md): Governor · inoperative · Apr 1, 2021 · N1331C · Casa C212CC > ON T/O ROLL OUT OF OOK AT V1 SPEED, #1 ENGINE BETA LIGHT CAME ON. PILOTS ELECTED TO TAKE OFF. TORQUE DROPPED 40%, AND PROPELLER SPEED INCREASED ON THE SAME ENGINE. #1 ENGINE FEATHERED DUE TO DRAG AND OVERSPEED OF THE PROP. ENGINE WAS DOWN TO 20%TQ, AND NP PEAK - [SDR N3XR20210208001](https://openairdocs.org/sdr/N3XR20210208001.md): Flywheel · worn · Feb 8, 2021 · Diamon DA42 > DURING A ROUTINE ANNUAL INSPECTION, THE MASS FLYWHEEL (TVD) UNIT WAS INSPECTED AS REQUIRED AT 600 TIS. THE INSPECTION REQUIRES A MEASUREMENT OF THE RIVETS IN THE CENTER ASSEMBLY. THEY WERE WORN BEYOND LIMITS AND THE FLYWHEEL WAS REPLACED WITH A NEW UNIT. - [SDR 2021FA0000023](https://openairdocs.org/sdr/2021FA0000023.md): Governor · misrepaired · Jan 26, 2021 · N3543B · Cessna T206H > ENGINE RPM FOLLOWS MANIFOLD PRESSURE IN ALL FLIGHT ENVELOPES. REMOVED PROPELLER GOVERNOR AFTER 218.4HRS TIS AFTER OVERHAUL BY SOUTH COAST PROPELLER SERVICE INC. SEE SPECIFIC PART BELOW FOR DETAILS. - [SDR JIKA2020060252801](https://openairdocs.org/sdr/JIKA2020060252801.md): Governor · leaking · May 28, 2020 · N248DH · Swrngn SA227AT > ON SHORT APPROACH TO MÉRIDA, APPROXIMATELY 300 AGL AND WITH APPROACH POWER SELECTED, THE RT ENGINE BEGAN SIGNIFICANT POWER SURGES BETWEEN IDLE POWER AND MAXIMUM POWER. EGT, TORQUE, RPM, AND FUEL FLOW WERE ALL SURGING UNCONTROLLABLY AND IN CONCERT. MAINTENANC - [SDR N3XR202001280001](https://openairdocs.org/sdr/N3XR202001280001.md): Governor · binding · Jan 28, 2020 · N311ER · Diamon DA42NG > IP STATED THAT THEY ATTEMPTED TO ADJUST THE THROTTLE MULTIPLE TIMES FOLLOWING TAKEOFF WITH LITTLE TO NO RESPONSE IN PROP SPEED. INSPECTED PROPELLER GOVERNOR CONDITION AND FOUND TO BE MECHANICALLY JAMMED AT MAX SETTING. INSTALLED OVERHAULED GOVERNOR P/N: P-877 - [SDR N3XR20201211001](https://openairdocs.org/sdr/N3XR20201211001.md): Governor · jammed · Dec 9, 2019 · N307ER · Diamon DA42NG > GROUND RAN THE AIRCRAFT AND NOTED THE LEFT ENGINE PROP GOVERNOR WAS FAILING TO CYCLE. THE ENGINE DATA WAS READ, AND THE INFORMATION SHOW THE GOVERNOR WAS JAMMED. THE PROPELLER GOVERNOR P/N: P-877-16, S/N: 15G365-H/G WAS REPLACED WITH GOVERNOR P/N: P-877-16, S/ - [SDR N3XR201912110001](https://openairdocs.org/sdr/N3XR201912110001.md): Governor · jammed · Nov 13, 2019 · N307ER · Diamon DA42NG > READ AIRCRAFT DATA CARD. VERIFIED ISSUE WITH THE LEFT ENGINE RPM EXCEEDING 2300. RAN THE LEFT ENGINE AND ATTEMPTED ECU SELF TEST. LEFT ENGINE FAILED SELF TEST. PROPELLER GOVERNOR WOULD NOT CYCLE. REPLACED THE LEFT ENGINE PROPELLER GOVERNOR, GASKET, AND ATTACHI - [SDR 2019FA0000264](https://openairdocs.org/sdr/2019FA0000264.md): Governor · fluctuates · Jul 27, 2019 · N9924B · Cessna 172RG > PROPELLER GOVERNOR FAILURE/MALFUNCTION. GOVERNOR FLUCTUATED IN FLIGHT. - [SDR CA190614020](https://openairdocs.org/sdr/CA190614020.md): Orifice · fod · Jun 12, 2019 · Gulstm 690A > (CAN) ON THE 12TH OF JUNE PILOT REPORTED THAT HE COULD NOT GET THE #1 PROP OFF THE LOCKS. INSPECTED AND CLEANED THE LOCK PINS. RAN THE AIRCRAFT AND DISCOVERED THAT THE PROP WAS COMING OFF THE LOCKS, BUT WITH THE CONDITION LEVER IN HIGH IT WAS ONLY PRODUCING 30 - [SDR 29GA2019053100002](https://openairdocs.org/sdr/29GA2019053100002.md): Governor · failed · May 31, 2019 · N348AG · Saab 340B > FLIGHT# 0054, R ENGINE PROP RPM UNDERSPEED (1150 IN THE AIR). R & R RH PROP OVERSPEED GOV IAW SAAB 340 AMM 61-20-15-02-1 PERFORMED RIG OF HMU & PCU IAW AMM 76-10-00, OPS CHECK AND LEAK CHECK GOOD. - [SDR CA190529019](https://openairdocs.org/sdr/CA190529019.md): Governor · malfunctioned · May 29, 2019 > (CAN) LH ENGINE HAD ECU A FAIL INDICATION ON TAKEOFF, APPROX. 2 MINUTES LATER, ECU B FAIL INDICATION ILLUMINATED. SUBSEQUENT PROPELLER SELF TEST FAILED. AIRCRAFT INSPECTED AND FOUND MULTIPLE PROPELLER GOVERNOR FAILURE CODES AND LATCHED SELF TEST FAILURE CODE. - [SDR CA190516017](https://openairdocs.org/sdr/CA190516017.md): Solenoid · stuck · May 15, 2019 · Beech 1900C > (CAN) THE TEST SOLENOID ON THE OVER SPEED GOVERNOR WAS STUCK IN THE TEST POSITION LIMITING THE PROP RPM TO 1550 RPM. THE OVER SPEED GOVERNOR WAS REPLACED AND FUNCTION CHECKED SERVICEABLE. (TC# 20190516017) - [SDR HYIA20190515003](https://openairdocs.org/sdr/HYIA20190515003.md): Governor · failed · May 8, 2019 · N2651S · Cessna 402C > PILOT REPORTED RIGHT PROP WENT ALL THE WAY TO THE DETENTE AT CLIMB POWER BUT NEVER CAME BELOW 2700 RPM. MAINTENANCE INSPECTED AND FOUND THE RIGHT PROP GOVERNOR UNABLE TO REGULATE HIGH SPEED RPM. REPLACED PROP GOVERNOR WITH NO FURTHER DEFECTS. - [SDR CA190501014](https://openairdocs.org/sdr/CA190501014.md): Shaft · sheared · Apr 30, 2019 · Diamon DA40NG > (CAN) GOVERNOR HAS INTERNAL LATCH FAILURE DURING INITIAL GROUND RUNS. FOUND GOVERNOR SHAFT SHEARED OFF WHEN GOVERNOR REMOVED. AIRCRAFT HAS ZERO TIME IN SERVICE. (TC# 20190501014) - [SDR QXEA2019042200181](https://openairdocs.org/sdr/QXEA2019042200181.md): Governor · inoperative · Apr 22, 2019 · N453QX · Bombdr DHC8402 > #1 ENG TORQUE OBSERVED @ 93% ON TAKE OFF FOLLOWED BY NR 1 PROP RPM OF 990 TO ACCELERATION HEIGHT TO CLIMB POWER. 900 RPM OBSERVED BOTH PROPS. REMOVED FROM SERVICE. REPLACED #1 OSG & PROP FEATHERING PUMP & PERFORMED POWER ASSURANCE CHECK. ALL OPS CHECKS WERE G - [SDR CA190415001](https://openairdocs.org/sdr/CA190415001.md): Governor · weak · Apr 13, 2019 · Beech 1900D > (CAN) LEFT ENGINE AUTO FEATHER ENGAGED ON APPROACH PILOT REPORTED PROP FEATHERED FOR ABOUT 3 SEC WHEN POWER WAS REDUCED BEFORE SELECTING FLAP 35. IT CAUSED THE PLANE TO YAW QUITE A BIT CORRECTION P/N OS GOVERNOR 210961C (TC# 20190415001) - [SDR JIKA20190404101](https://openairdocs.org/sdr/JIKA20190404101.md): Governor · overspeed · Apr 1, 2019 · N548UP · Swrngn SA227AT > THE PILOT REPORTED THAT IN CRUISE FLIGHT, THE LH PROP RPM ROSE TO 101%, THEN UP TO 102% AND EVENTUALLY 103% AS THE PILOT STARTED DESCENDING FOR LANDING AT. THE PILOT ATTEMPTED TO PULL BACK THE SPEED LEVER TO HALT THE SLOW RISE BUT THIS JUST CAUSED THE ENGINE - [SDR CA190322006](https://openairdocs.org/sdr/CA190322006.md): Governor · malfunctioned · Mar 20, 2019 · Bombdr DHC8400 > (CAN) AIRCRAFT HAD A COMMANDED IN-FLIGHT ENGINE SHUT DOWN. THE CREW REPORTED IN THE AML: `SHORTLY AFTER TAKEOFF THE NUMBER 2 TORQUE WAS SUPPOSED TO BE AT 90% AND WAS AT 94%, THE RPM WAS SUPPOSED TO BE 1020 AND WAS 980. NO SURGES, NO CAUTIONS. HAPPENED WHILE CL - [SDR 2019FA0000168](https://openairdocs.org/sdr/2019FA0000168.md): Nut · defective · Mar 15, 2019 · N7PCMO · Cessna TU206G > ATTACHMENT NUTS SUPPLIED WITH ATTACHMENT KIT (P/N KPL2001) FAILED BEFORE REACHING RECOMMENDED TORQUE (180-220 IN LBS). THE NUTS SEEM VERY SOFT. - [SDR Q9UA2019FA0000058](https://openairdocs.org/sdr/Q9UA2019FA0000058.md): Governor · intermittent · Mar 8, 2019 · N145GT · Cvac 340CVAC > FLIGHT CREW INABILITY TO ADJUST RPM INFLIGHT VIA PROPELLER SPEED CONTROL. PROPELLER SPEED CONTROL COULD BE ADJUSTED ON THE GROUND DURING RUN UP. - [SDR DATA2018120300001](https://openairdocs.org/sdr/DATA2018120300001.md): Governor · failed · Nov 29, 2018 · N385MQ · Stbros SD360 > CREW EXPERIENCED ENGINE FAILURE SHORTLY AFTER DEPARTING SDQ. THE FAILURE OCCURRED APPROXIMATELY 40 MILES WEST OF SDQ. AFTER ANALYZING THE PROBLEM THE CREW HANDLED THE SITUATION ACCORDINGLY, DECLARED AN EMERGENCY AND A DECISION WAS MADE TO RETURN TO SDQ. AIRCRA - [SDR QXEA2018101500364](https://openairdocs.org/sdr/QXEA2018101500364.md): Governor · malfunctioned · Oct 12, 2018 · N450QX · Bombdr DHC8402 > ON INITIAL CLIMB, NR 1 RPM SHOWED 1010 WITH CONDITION LEVERS MAX. CONDITION LEVERS BROUGHT BACK TO 900. NR 1 PROP RPM DROPPED TO 890. THEN EVENTUALLY 850. TORQUE WAS CONSISTENTLY 6% OVER TORQUE BUG, BUT NEVER EXCEEDED ANY LIMITS. PRECAUTIONARY RETURN TO FIELD - [SDR 29GA2018071800001](https://openairdocs.org/sdr/29GA2018071800001.md): Pressure Switch · failed · Jul 18, 2018 · N343AG · Saab 340B > FLT 0135 RSW/EYW REPORT. DURING APPROACH BASE TO FINAL, LT ENGINE TORQUE WAS AROUND 20-25% AND SUDDENLY INCREASED TO 60-70% AND PROP DROP TO ZERO. WE GOT LEFT ENGINE OIL PRESSURE LIGHT. PERFORMED BENCH CHECK OF AUTO COURSE TEST PANEL FOR TEST SWITCH OPERATION, - [SDR QXEA2018060100207](https://openairdocs.org/sdr/QXEA2018060100207.md): Governor · malfunctioned · May 30, 2018 · N447QX · Bombdr DHC8402 > AFTER ENGINE START, BROUGHT PROPS LEVERS TO 1020. NR 1 ENGINE TOOK 1 MINUTE LONGER TO UNFEATHER THAN THE NR 2. REPLACED THE NR 1 OVERSPEED GOVERNOR. NO FURTHER DEFECTS NOTED. PROP UNFEATHERS NORMALLY. RETURNED TO SERVICE. - [SDR QML201805108057](https://openairdocs.org/sdr/QML201805108057.md): Governor · intermittent · May 10, 2018 · N299AM · Pilats PC1245 > ON DEPARTURE PROPELLER RPM WAS VERY LOW. 1635 VS 1700 GOOD TORQUE, PLANE ACCELERATED RPM STARTED TO INCREASE AND YELLOW LIGHT WENT OUT BUT STILL LOW. MOVING TOO FAST TO ABORT AND UNSURE THE REVERSE WOULD EFFECTIVE, ELECTED TO TAKE IT IN FLIGHT AND HANDLE AS AN - [SDR TIMA20180214003](https://openairdocs.org/sdr/TIMA20180214003.md): Governor · open · Feb 7, 2018 · N192GA · Beech 1900C > PROPELLER DID NOT COME OUT OF FEATHER AFTER A PROPELLER CYCLE CHECK DURING RUN-UP. REPLACING THE OVERSPEED GOVERNOR ELIMINATED THE PROBLEM. THE DUMP VALVE OF THE OVERSPEED GOVERNOR STUCK IN THE OPEN POSITION. - [SDR T8VA20171121001](https://openairdocs.org/sdr/T8VA20171121001.md): Drive Gear · sheared · Oct 19, 2017 · N713WT · Piper PA31350 > DURING SETUP FOR APPROACH TO LANDING STALL, RIGHT ENGINE FAILED AND WAS SECURED. EMERGENCY WAS DECLARED AND AIRCRAFT RETURNED TO DEPARTURE WITH NO FURTHER INCIDENT. MAINTENANCE DISCOVERED THAT THE WERE LITTLE TO NO CONTROL OF THE PROPELLER AND AFTER INVESTIGA Next page: https://openairdocs.org/jasc/6122/reports.md?page=2 ## 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 = '6122' ORDER BY difficulty_date DESC ``` This list as a web page: https://openairdocs.org/jasc/6122/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.