# U/A Canada PT6A-27 - Type: Engine model (FAA registry) - Registry code: 61576 - Manufacturer (registry): U/A CANADA - Model: PT6A-27 - Engine type: Turbo-prop - Power: 680 hp - Installed in: 1 registered aircraft - Page: https://openairdocs.org/engine/u-a-canada-pt6a-27 Model codes come from the FAA registry's reference file. ## ADs that may apply (OpenAirDocs) Matched to this engine model by model name and maker. Each AD's applicability may narrow it by serial number, part number or equipment. None matched. ## Registered aircraft (1) - [N403ML](https://openairdocs.org/aircraft/N403ML): [Dhc6-403 Equity LLC](https://openairdocs.org/faa-owner/DHC6-403%20EQUITY%20LLC), [Palm Beach, FL](https://openairdocs.org/faa-place/FL/Palm%20Beach), built 1974, S/N 403 ## NTSB investigations None matched to aircraft with this engine model. ## FAA accident and incident reports None matched to aircraft with this engine model. ## Service difficulty reports (642, newest 50) As reported by operators and repair stations, by the model named in the report. - [SDR 2026F00209](https://openairdocs.org/sdr/2026F00209), Sep 16, 2026: FUEL LINE. KINKED. FWD FUEL FLOW FLUCTUATING DURING TAKE OFF ROLL, ABORTED TAKE OFF AND RETURNED TO GATE. - [SDR TIMA20251226004](https://openairdocs.org/sdr/TIMA20251226004), Dec 23, 2025: ELECTRICAL BOX. CONTAMINATED. WHILE IN CRUISE FLIGHT THE CIRCUIT BREAKER PANEL STARTED SMOKING. PILOT REQUESTED APPROACH FOR PRIORITY IN HELENA, MT. PILOT SAID THE SMOKE SHORTLY STOPPED AFTE - [SDR S9BA2025121500004](https://openairdocs.org/sdr/S9BA2025121500004), Dec 12, 2025: GASKET. BURNED. FLT/CREW REPORTED - UPON SETTING CRUISE POWER APPROX. 3 MINUTES AFTER ON FLIGHT # BB - 186 SPB / SSB " FIRE WARNING R ENGINE WITH NO EVIDENCE OF FIRE. THIS A RE - [SDR S9BA202512080003](https://openairdocs.org/sdr/S9BA202512080003), Dec 4, 2025: FIRE DETECTOR. OUT OF TOLERANCE. FLT/CREW REPORTED - UPON LEVELING OUT ON FLIGHT NR BB-136 SSP / SSB RT ENGINE FIRE WARNING LIGHT CAME ON WITH AURAL FIRE BELL WARNING CAME ON ALSO. POWER LEVER - [SDR TIMA202309013006](https://openairdocs.org/sdr/TIMA202309013006), Aug 3, 2023: TRANSDUCER. UNKNOWN. AFTER TAKEOFF WHILE CLIMBING THROUGH ROUGHLY 6000 FEET THE TORQUE AND ITT BEGAN TO SLOWLY FALL. AFTER PILOT NOTICED THE DECREASE HE REQUESTED TO GO BACK TOWARD - [SDR KCQA20211207](https://openairdocs.org/sdr/KCQA20211207), Nov 29, 2021: BRAKE ASSY. LEAKING. WHILE TAXING THE AIRCRAFT AFTER LANDING THE FLIGHT CREW NOTICED THERE WAS A LOSS OF BRAKING ON THE LH SIDE. FOUND LEAKING BRAKE FLUID OUT OF THE LH BRAKE LINE W - [SDR HKGA20201001001](https://openairdocs.org/sdr/HKGA20201001001), Oct 1, 2020: NOZZLE. LEAKING. NUMBER 2 ENGINE FLAMED OUT DURING CRUISE FLIGHT. AFTER LANDING MAINTENANCE FOUND THE NUMBER 8 FUEL NOZZLE LEAKING FROM THE TRANSFER TUBES, DUE TO AN INCORRECTLY - [SDR CA190731030](https://openairdocs.org/sdr/CA190731030), Jul 29, 2019: SWITCH. MALFUNCTIONED. (CAN) DURING THE TAKE-OFF SLIDE, THE AUTO FEATHER SWITCH WOULD NOT ARM. THE PILOTS ABORTED THE TAKE-OFF AND RETURNED TO THE DOCK. THE SWITCH WAS REPLACED, AND T - [SDR CA190725012](https://openairdocs.org/sdr/CA190725012), Jul 24, 2019: EXHAUST DUCT. DAMAGED. (CAN) THIS ENGINE WAS SENT FOR REPAIR AFTER A POWER TURBINE BLADE DISTRESS WAS REPORTED. IT WAS REPORTED THAT .THE RH ENGINE FAILED WITH A LOUD NOISE .THE POWER - [SDR 3RAA201903288049](https://openairdocs.org/sdr/3RAA201903288049), Mar 27, 2019: PUSHROD. ABNORMAL. RIGHT ENGINE FCU PUSHROD (FCU CONTROL ROD) ADJUSTMENT TURNBUCKLE JAMNUTS LOOSENED AND THE TURNBUCKLE BACKED OUT LENGTHENING THE PUSHROD OVERALL LENGTH CAUSING L - [SDR TIMA20170427007](https://openairdocs.org/sdr/TIMA20170427007), Apr 27, 2017: ENGINE. MALFUNCTIONED. DURING CRUISE FLIGHT, THE RIGHT ENGINE DEVELOPED TORQUE FLUCTUATIONS. PILOT NOTED FLUCTUATING OIL PRESSURE READINGS AND AS OIL PRESSURE DROPPED TO ZERO. SHUTDOW - [SDR S9BA201612040004](https://openairdocs.org/sdr/S9BA201612040004), Dec 2, 2016: DUCT CLAMP. CRACKED. ON TAKEOFF, RIGHT T HANDLE FIRE WARNING. - [SDR GCNA20160725001](https://openairdocs.org/sdr/GCNA20160725001), Jul 20, 2016: UNKNOWN. ODOR. WHILE IN FLIGHT, CREW SMELLED SMOKE. THE CREW OPENED THE BUS TIE AND ISOLATED THE ELECTRICAL POWER. ACFT RETURNED TO BASE WITHOUT FURTHER INCIDENT. MAINTENANCE - [SDR 2016F00123](https://openairdocs.org/sdr/2016F00123), May 7, 2016: WIRE. CHAFED. EXPERIENCED A MASTER WARNING & FIRE INDICATION ON THE NR 2 ENG, SHORTLY AFTER GETTING INTO SOME HEAVY PRECIPITATION. THE PILOT RESET THE MASTER WARNING, BOTH TH - [SDR CA160317011](https://openairdocs.org/sdr/CA160317011), Feb 28, 2016: STRUT. DAMAGED. (CAN) DURING AN INSPECTION OF THE WING STRUT LOWER ATTACHMENT BOLTS, CORROSION WAS FOUND AT THE LOWER LUG ATTACHMENT POINT ON BOTH THE LT AND RT STRUTS. CORROSI - [SDR CA160229005](https://openairdocs.org/sdr/CA160229005), Feb 26, 2016: LIGHT. BURNED OUT. (CAN) AIRCRAFT DEPARTED FROM AIRPORT AND CREW SMELLED AND NOTICED SMOKE COMING FROM ONE OF THE OVERHEAD COCKPIT PANELS. AIRCRAFT RETURNED TO AIRPORT AND LANDED - [SDR CA160307001](https://openairdocs.org/sdr/CA160307001), Feb 23, 2016: TURBINE BLADES. FRACTURED. (CAN) AFTER TAKE-OFF THE CREW OBSERVED A FLUCTUATION IN THE NR 2 TORQUE INDICATION AND COULD HEAR THE CHANGES IN ENGINE POWER SETTINGS. ALL OTHER PARAMETERS REM - [SDR CA160212009](https://openairdocs.org/sdr/CA160212009), Feb 11, 2016: TUBE. CORRODED. (CAN) UPON REMOVAL OF TUBE ASSEMBLY-LOWER RUDDER SUPPORT, (C6FS1828-1) FOR CORROSION REMOVAL AND RE CADMIUM PLATING, IT WAS NOTICED THAT THE TUBE ASSEMBLY WAS F - [SDR CA160208004](https://openairdocs.org/sdr/CA160208004), Feb 8, 2016: EXHAUST DUCT. DAMAGED. (CAN) ENGINE SENT FOR INVESTIGATION DUE TO THE CUSTOMER REPORTED A CRACKED AND DISTORTED EXHAUST DUCT. THE CUSTOMER ELECTED TO OVERHAUL THE ENGINE AT THIS TIME. - [SDR CA160301027](https://openairdocs.org/sdr/CA160301027), Dec 27, 2015: FCU. LEAKING. (CAN) DURING ENGINE GROUND RUN, EGR, FUEL LEAK FROM FUEL PUMP DRAIN LESS THAN 20 CC MINUTE WAS FOUND. ALSO, LIGHT BLUE DYE WAS FOUND FROM FCU VENT HOLE. FCU AND - [SDR CA151214008](https://openairdocs.org/sdr/CA151214008), Nov 27, 2015: RECORDER. WRONG PART. (CAN) CVR OUTPUT FROM KMA24H-70 AUDIO PANELS DOES NOT COMPLY WITH EITHER ARINC 557 OR ARINC 757 STANDARDS FOR VOICE RECORDER INPUT LEVELS. INTERFACING AN ARINC - [SDR CA151112003](https://openairdocs.org/sdr/CA151112003), Nov 10, 2015: WIRE. CHAFED. (CAN) WIRES FROM DE-ICE BOOT TO CONNECTOR FOUND CHAFFED ON CONNECTOR MOUNTING BRACKET. - [SDR CA151023001](https://openairdocs.org/sdr/CA151023001), Oct 20, 2015: LEVER. BROKEN. (CAN) DURING TURN AT THE END OF THE RUNWAY, CREW HEARD A THUMP. MAINTENANCE FOUND STEERING LEVER P/N 71-159-9 BROKEN. STEERING LEVER REPLACED, AND STEERING TRAV - [SDR S9BA2016F00006](https://openairdocs.org/sdr/S9BA2016F00006), Oct 19, 2015: FUEL CONTROL. FAILED. (CGKBR) LEFT ENGINE NOT MAKING 50 PERCENT TORQUE ON LAST FLIGHT CHECKS. REPLACED FUEL PUMP AND FUEL CONTROL. - [SDR CA151027007](https://openairdocs.org/sdr/CA151027007), Oct 19, 2015: STUD. SHEARED. (CAN) BRACKET C3W25-3 HOLDS TWO STUDS C3W65-3 THAT SECURE THE UPPER AND LOWER AILERON CABLE PULLEYS IN THE OUTBOARD LH WING OF THE TWIN OTTER. ONE OF THE PULLEY - [SDR CA151121001](https://openairdocs.org/sdr/CA151121001), Oct 19, 2015: ADAPTER. CRACKED. (CAN) AFT ADAPTER ON VERTICAL STABILIZER WAS FOUND CRACKED UPON EXAMINATION CALLED OUT IN PART B OF SERVICE BULLETIN 6/454. INSPECTION REQUIRED EVERY 60 MONTHS. - [SDR TIMA20151015006](https://openairdocs.org/sdr/TIMA20151015006), Oct 15, 2015: GEAR SET. STRIPPED. DURING CRUISE CLIMB AT APPROX 9000 FT, THE LT ENG SUDDENLY LOST ALL POWER. ACFT RETURNED TO DEPARTURE LOCATION & LANDED WITHOUT INCIDENT. INSPECTION REVEALED TH - [SDR CA151019002](https://openairdocs.org/sdr/CA151019002), Oct 15, 2015: BOLT. BROKEN. (CAN) STEERING ACTUATOR LINK BOLT P/N 71-146-1 FOUND BROKEN DURING NOSE WHEEL STEERING CABLE INSPECTION. BOLT WAS STILL IN ITS HOLE AND FELL AS IT GOT TOUCHED F - [SDR S9BA201510170014](https://openairdocs.org/sdr/S9BA201510170014), Oct 12, 2015: TRANSDUCER. MALFUNCTIONED. LT ENGINE ONLY PRODUCING 40 LBS TORQUE ON TAKEOFF. TAKEOFF WAS ABORTED. TORQUE TRANSDUCER WAS REPLACED IAW AMM 79-31. - [SDR CA150723004](https://openairdocs.org/sdr/CA150723004), Jul 22, 2015: COLLAR. BROKEN. (CAN) PILOT LANDED AND NOTICE THAT NOSE WHEEL STEERING WAS STIFF AND DIFFICULT TO CONTROL. ALSO TILLER POSITION DID NOT CORRESPOND WITH THE DIRECTION AIRCRAFT W - [SDR S9BA201506180004](https://openairdocs.org/sdr/S9BA201506180004), Jun 18, 2015: ENGINE. POWER LOSS. LT ENGINE LOST POWER ON TAKEOFF, AUDIBLE GRINDING NOISE AND EXCESSIVE VIBRATION CAN BE HEARD AND FELT COMING FROM ENGINE. - [SDR TIMA20150618001](https://openairdocs.org/sdr/TIMA20150618001), Jun 18, 2015: FITTING. LEAKING. DURING APPROACH FOR LANDING, THE RT ENG OIL PRESS BEGAN FLUCTUATING. OIL PRESS DROPPED TO 40 PSI WITH THROTTLE AT IDLE & THE OIL PRESS ANNUNCIATOR ILLUMINATED. - [SDR CA150612009](https://openairdocs.org/sdr/CA150612009), Jun 12, 2015: TURNBUCKLE. CRACKED. (CAN) DURING INSPECTION, FOUR TURNBUCKLES FROM A FLIGHT CONTROL TRIM SYSTEM WERE FOUND CRACKED. ONE MS21251B-5L, TWO MS21251B-2L, & ONE MS21251-B2L. CRACKS ARE - [SDR CA150604007](https://openairdocs.org/sdr/CA150604007), May 25, 2015: CONTROL SYSTEM. MALFUNCTIONED. (CAN) IT WAS REPORTED THAT THE LEFT TIRE BLEW OUT DURING LANDING, WHEN THE PILOT HAD TO APPLY THE BRAKE HARD, DUE TO THE LEFT ENGINE COULD NOT BE REVERSED. FURT - [SDR CA150806008](https://openairdocs.org/sdr/CA150806008), May 15, 2015: BLADE. DAMAGED. (CAN) DURING SCHEDULED MAINTENANCE AFTER HAVING A FOD INCIDENT ON THE OTHER ENGINE, IT WAS DECIDED TO REMOVE THE PROTECTIVE SCREEN AND INSPECT THE COMPRESSOR FO - [SDR CA150602005](https://openairdocs.org/sdr/CA150602005), May 9, 2015: ENGINE. OVERTORQUED. (CAN) INFLIGHT SHUTDOWN DUE TO ENG OVER TORQUE UP TO 75%. ONGOING POWER SECTION & PROPELLER REPLACEMENT. THE ACFT TO BE FERRIED TO MAIN BASE FOR AUTO FEATHER SY - [SDR CA150512002](https://openairdocs.org/sdr/CA150512002), May 7, 2015: AUTOFEATHER SYS. FAILED. (CAN) ENGINE NR 2 OVER TORQUED IN FLIGHT & NP WAS HIGH AT APPROX 92%. AS A PRECAUTION, ENG %2 WAS SHUTDOWN IN FLIGHT. THE OVER TORQUE WAS BEYOND 70 PSI FOR AT L - [SDR CA150421001](https://openairdocs.org/sdr/CA150421001), Apr 18, 2015: LINE. CHAFED. (CAN) UPON INSPECTION OF THE ACFT IT WAS FOUND THAT THE LT SKI UP LINE ON THE LT MLG LEG WAS CHAFED THROUGH WHERE THE LEG EXIT THE FUSELAGE ON AFT FUSELAGE GEAR - [SDR CA150806007](https://openairdocs.org/sdr/CA150806007), Apr 15, 2015: BLADES. CRACKED. (CAN) PILOT REPORTED CLICKING NOISE COMING FROM ENGINE DURING SHUTDOWN AND TURNING OVER ENGINE.MAINTENANCE INVESTIGATED AND FOUND THERE WAS A NOTICEABLE CLICKIN - [SDR CA150331010](https://openairdocs.org/sdr/CA150331010), Mar 23, 2015: LEVER. BROKEN. (CAN) THE FLIGHT CREW STATED THAT THE NOSE-WHEEL STEERING WAS HARD TO USE. WHEN THE AME INVESTIGATED HE DISCOVERED THAT THE LEVER ASSY WAS BROKEN ON THE NLG. NO - [SDR CA150318016](https://openairdocs.org/sdr/CA150318016), Mar 14, 2015: PRESSURE SWITCH. FAILED. (CAN) AFTER ACFT HAD DOCKED, MAINTENANCE NOTICED AN OIL LEAK FROM THE NR 1 ENGINE COWLING. UPON INVESTIGATION IT WAS FOUND THAT THE SOURCE OF THE OIL LEAK WAS T - [SDR CA150312008](https://openairdocs.org/sdr/CA150312008), Mar 12, 2015: ROD. UNSERVICEABLE. (CAN) DURING ROUTINE MAINTENANCE ACTIVITIES THE AME NOTICED A CRACK IN THE AILERON SERVO ROD. THIS SAME CRACKED AREA ON THE ROD WAS ALSO SWOLLEN AND IT IS SUSPE - [SDR CA150303001](https://openairdocs.org/sdr/CA150303001), Feb 16, 2015: SHOCK ABSORBER. DEBONDED. (CAN) DURING ACFT "EMMA" INSPECTION ON THE LANDING GEAR, THE ENGINEER FOUND THE LT REBOUND SHOCK ABSORBER ASSY DISBONDED FROM BOTH OF THE MOUNTING PLATES. THE R - [SDR JIKA2015021001](https://openairdocs.org/sdr/JIKA2015021001), Feb 10, 2015: INDICATOR. SHORTED. IN CRUISE, VISUALLY OBSERVED A SMALL AMOUNT OF SMOKE IN THE COCKPIT & THEN THE LT OIL PRESS CB POPPED. AFTER THE CB POPPED THE SMOKE DISSIPATED. RETURNED & LAND - [SDR CA150122002](https://openairdocs.org/sdr/CA150122002), Jan 15, 2015: PROBE. FAILED. (CAN) FIRE INDICATION ON LEFT ENGINE IN FLIGHT. FLIGHT CREW DID FIRE PROCEDURES. AIRCRAFT LAND WITH NO INCIDENT. AFTER INSPECTIONS, FOUND 300 DEGREE TEMPERATURE - [SDR CA141224006](https://openairdocs.org/sdr/CA141224006), Dec 14, 2014: CABLE. WORN. (CAN) DURING THE FIVE YEAR SCHEDULED FLIGHT CONTROL CABLE CHANGE, THE ELEVATOR CABLE IN THE FORWARD NOSE WAS FOUND TO BE INTERFERING ON THE STEC AUTOPILOT PULLE - [SDR CA141217004](https://openairdocs.org/sdr/CA141217004), Dec 1, 2014: ENGINE. MALFUNCTIONED. (CAN) DURING FINAL APPROACH, THE PILOT RETARDED POWER LEVER (PL) AND NOTICED LEFT HAND ENGINE POWER SUSPENDING AT NP 1900, TQ 750, NG 84%. RIGHT HAND ENGINE HAD - [SDR CA150422003](https://openairdocs.org/sdr/CA150422003), Nov 28, 2014: LEG ASSY. CORRODED. (CAN) MAIN LANDING GEAR NDT`D BY AUTHORIZED FACILITY PER 5 YEAR INSPECTION REQUIREMENT. PITTING, CORROSION & BOLT FLANGE HOLES OUT OF LIMITS FOUND DURING INTERN - [SDR CA141201002](https://openairdocs.org/sdr/CA141201002), Nov 25, 2014: ADAPTER. CRACKED. (CAN) WHILE COMPLETING SB 6/454, THE RT REAR STABILIZER ATTACHMENT ADAPTER FOUND CRACKED.(P/N C6FSM 1820-33). THE ATTACHMENT ADAPTOR WAS REPLACED WITH NO ADDITI - [SDR GCNA20141030001](https://openairdocs.org/sdr/GCNA20141030001), Oct 29, 2014: ENGINE. SHUTDOWN. PILOT TOOKOFF, THEN REPORTED THAT AT 400 FEET AGL AFTER TAKEOFF, CREW HEARD WEIRD NOISES AND FELT PITCH CHANGES. RIGHT TORQUE INDICATED HIGH, WITH RT PROP RPM F All 642: https://openairdocs.org/engine/u-a-canada-pt6a-27/reports.md --- 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.