# Boeing DHC-6-300 - Type: Aircraft model (FAA registry) - Registry code: 1386001 - Manufacturer (registry): BOEING - Model: DHC-6-300 - Aircraft type: Fixed wing multi engine - Category: Airplane - Engines: 2 · Turbo-prop - Seats: 22 - Weight class: Up to 12,499 lb - Certification: Type certificated - Data sheet: [TCDS A9EA](https://openairdocs.org/tcds/A9EA) (OpenAirDocs) - Holder: De Havilland Aircraft of Canada Limited - Registered aircraft: 0 - Page: https://openairdocs.org/model/boeing-dhc-6-300 Model codes come from the FAA registry's reference file. ADs are matched to them by model name and maker. ## ADs that may apply (OpenAirDocs) Matched to this model by model name and maker. Each AD's applicability may narrow it by serial number, part number or equipment. - [AD 2023-10-02](https://openairdocs.org/ad/2023-10-02): Indicating/Recording System, Navigation · Boeing 18, 23, 35 and 1,060 more. Effective May 26, 2023 - [AD 2022-11-12](https://openairdocs.org/ad/2022-11-12): Engine Controls · Viking Air DHC-6-1, DHC-6-100, DHC-6-200 and 2 more. Effective Jul 13, 2022 - [AD 2022-11-09](https://openairdocs.org/ad/2022-11-09): Wing Structure · Viking Air DHC-6-1, DHC-6-100, DHC-6-200 and 2 more. Effective Jul 6, 2022 - [AD 2022-10-07](https://openairdocs.org/ad/2022-10-07): Flight Control System · Viking Air DHC-6-1, DHC-6-100, DHC-6-200 and 2 more. Effective Jun 23, 2022 - [AD 2022-10-03](https://openairdocs.org/ad/2022-10-03): Flight Control System · Viking Air DHC-6-1, DHC-6-100, DHC-6-200 and 2 more. Effective Jun 23, 2022 - [AD 2022-03-04](https://openairdocs.org/ad/2022-03-04): Time Limits · Viking Air DHC-6-1, DHC-6-100, DHC-6-200 and 2 more. Effective Mar 17, 2022 - [AD 2019-10-05](https://openairdocs.org/ad/2019-10-05): Flight Controls · Viking Air DHC-6-1, DHC-6-100, DHC-6-200 and 2 more. Effective Jun 20, 2019 - [AD 2018-04-02](https://openairdocs.org/ad/2018-04-02): Flight Controls · Viking Air DHC-6-1, DHC-6-100, DHC-6-200 and 2 more. Effective Mar 27, 2018 - [AD 2009-04-09](https://openairdocs.org/ad/2009-04-09): Wing front spar adapter · Viking Air DHC-6-1, DHC-6-100, DHC-6-200 and 1 more. Effective Mar 26, 2009 - [AD 2008-24-01](https://openairdocs.org/ad/2008-24-01): Flight control gust locks · Viking Air DHC-6-1, DHC-6-100, DHC-6-200 and 1 more. Effective Dec 30, 2008 - [AD 2008-13-11](https://openairdocs.org/ad/2008-13-11): Corrosion · Viking Air DHC-6-1, DHC-6-100, DHC-6-200 and 1 more. Effective Aug 5, 2008 - [AD 2006-16-18 R1](https://openairdocs.org/ad/2006-16-18-R1): Installing a warning placard on the TAWS/RMI · Airbus A300 B2-1A, A300 B2-1C, A300 B2-203 and 100 more. Effective Jul 18, 2008 - [AD 2005-25-08](https://openairdocs.org/ad/2005-25-08): Electronic Flight Information System (EFIS) · B-N Group BN-2A, 172, 180 and 22 more. Effective Jan 23, 2006 - [AD 2005-18-20](https://openairdocs.org/ad/2005-18-20): "FASTprop" propeller de-icers · Hartzell PHC-C3YF-1RF/F8468A(B,K)-8R constant speed propeller (STC SA00718LA or 17 others). Effective Oct 14, 2005 - [AD 2005-01-19](https://openairdocs.org/ad/2005-01-19): Mode S transponders · GARMIN International GTX 330D, GTX 330, GTX 33D and 830 more. Effective Feb 23, 2005 - [AD 2000-06-03](https://openairdocs.org/ad/2000-06-03): Pneumatic Deicing Boots · Viking Air DHC-6-1, DHC-6-100, DHC-6-200 and 1 more. Effective May 5, 2000 - [AD 98-25-02](https://openairdocs.org/ad/98-25-02): Top-mounted Antenna · Bell Helicopter Textron Canada 407, 172, 172A and 243 more. Effective Dec 22, 1998 - [AD 97-23-09](https://openairdocs.org/ad/97-23-09): Inspect Fuselage Side Frames for Cracks · Viking Air DHC-6-1, DHC-6-100, DHC-6-200 and 1 more. Effective Dec 22, 1997 - [AD 97-07-10 R1](https://openairdocs.org/ad/97-07-10-R1): Wing Struts · Viking Air DHC-6-1, DHC-6-100, DHC-6-200 and 1 more. Effective May 23, 1997 - [AD 96-09-11](https://openairdocs.org/ad/96-09-11): Airplane Flight Manual (AFM) - Icing · Viking Air DHC-6-1, DHC-6-100, DHC-6-200 and 1 more. Effective Jun 11, 1996 - [AD 95-22-07](https://openairdocs.org/ad/95-22-07): Horizontal Stabilizer Attachment Fittings · Viking Air DHC-6-1, DHC-6-100, DHC-6-200 and 1 more. Effective Dec 27, 1995 - [AD 95-21-14](https://openairdocs.org/ad/95-21-14): Tailplane Outboard Hinge Arm Assembly · Viking Air DHC-6-1, DHC-6-100, DHC-6-200 and 1 more. Effective Dec 4, 1995 - [AD 95-18-11](https://openairdocs.org/ad/95-18-11): Wing Rear Spar Attachment Caps · Viking Air DHC-6-1, DHC-6-100, DHC-6-200 and 1 more. Effective Oct 26, 1995 - [AD 95-18-10](https://openairdocs.org/ad/95-18-10): Elevator Root Rib · Viking Air DHC-6-1, DHC-6-100, DHC-6-200 and 1 more. Effective Oct 26, 1995 - [AD 94-14-22](https://openairdocs.org/ad/94-14-22): Elevator Control Support · Viking Air DHC-6-1, DHC-6-100, DHC-6-200 and 1 more. Effective Aug 31, 1994 - [AD 94-08-10](https://openairdocs.org/ad/94-08-10): Wing Main Spar · Viking Air DHC-6-1, DHC-6-100, DHC-6-200 and 1 more. Effective Jun 13, 1994 - [AD 94-04-01](https://openairdocs.org/ad/94-04-01): Wing Attachment Fittings · Viking Air DHC-6-1, DHC-6-100, DHC-6-200 and 1 more. Effective Mar 31, 1994 - [AD 93-10-08](https://openairdocs.org/ad/93-10-08): Controls in Overhead Control Console · Viking Air DHC-6-1, DHC-6-100, DHC-6-200 and 1 more. Effective Jul 16, 1993 - [AD 93-02-04](https://openairdocs.org/ad/93-02-04): Elevator Support Assembly · Viking Air DHC-6-1, DHC-6-100, DHC-6-200 and 1 more. Effective Mar 19, 1993 - [AD 90-11-01](https://openairdocs.org/ad/90-11-01): Elevator Pushrod Assembly · Viking Air DHC-6-1, DHC-6-100, DHC-6-200 and 1 more. Effective Nov 16, 1990 - [AD 87-04-23](https://openairdocs.org/ad/87-04-23): Wing Support Strut · Viking Air DHC-6-1, DHC-6-100, DHC-6-200 and 1 more. Effective Mar 16, 1987 - [AD 87-03-12](https://openairdocs.org/ad/87-03-12): Utility Seat - Forward Legs · Viking Air DHC-6-1, DHC-6-100, DHC-6-200 and 1 more. Effective Feb 13, 1987 - [AD 80-13-11 R2](https://openairdocs.org/ad/80-13-11-R2): Rod Assemblies · Viking Air DHC-6-1, DHC-6-100, DHC-6-200 and 1 more. Effective Aug 10, 1983 - [AD 82-26-06](https://openairdocs.org/ad/82-26-06): Windscreen Washer/Deicing System · Viking Air DHC-6-1, DHC-6-100, DHC-6-200 and 1 more. Effective Dec 27, 1982 - [AD 81-22-03](https://openairdocs.org/ad/81-22-03): Elevator Torque Tube · Viking Air DHC-6-1, DHC-6-100, DHC-6-200 and 1 more. Effective Nov 2, 1981 - [AD 69-05-01 R2](https://openairdocs.org/ad/69-05-01-R2): Control Column Sub-assembly Cracks · Viking Air DHC-6-1, DHC-6-100, DHC-6-200 and 1 more. Effective Jul 7, 1980 - [AD 80-13-13](https://openairdocs.org/ad/80-13-13): Struts · Viking Air DHC-6-1, DHC-6-100, DHC-6-200 and 1 more. Effective Jul 1, 1980 - [AD 80-03-08](https://openairdocs.org/ad/80-03-08): Flap Control Rod Tubes · Viking Air DHC-6-1, DHC-6-100, DHC-6-200 and 1 more. Effective Feb 7, 1980 - [AD 79-14-01](https://openairdocs.org/ad/79-14-01): Elevator Control System · Viking Air DHC-6-1, DHC-6-100, DHC-6-200 and 1 more. Effective Jul 6, 1979 - [AD 78-01-05](https://openairdocs.org/ad/78-01-05): Electrical Failure · Viking Air DHC-6-1, DHC-6-100, DHC-6-200 and 1 more. Effective Feb 9, 1978 - [AD 76-13-06](https://openairdocs.org/ad/76-13-06): Lightning Protection · Viking Air DHC-6-1, DHC-6-100, DHC-6-200 and 1 more. Effective Jul 6, 1976 - [AD 76-07-08](https://openairdocs.org/ad/76-07-08): Water Leakage-float Models · Viking Air DHC-6-1, DHC-6-100, DHC-6-200 and 1 more. Effective Apr 12, 1976 - [AD 75-26-07](https://openairdocs.org/ad/75-26-07): Electrical Fire Hazards · Viking Air DHC-6-1, DHC-6-100, DHC-6-200 and 1 more. Effective Dec 17, 1975 - [AD 75-24-15](https://openairdocs.org/ad/75-24-15): AC Power · Viking Air DHC-6-1, DHC-6-100, DHC-6-200 and 1 more. Effective Nov 28, 1975 - [AD 75-12-10](https://openairdocs.org/ad/75-12-10): Autopilots · M7 Aerospace 60, 95-C55, 95-C55A and 17 more. Effective Jun 11, 1975 - [AD 75-08-02](https://openairdocs.org/ad/75-08-02): Aileron Control Cable · Viking Air DHC-6-1, DHC-6-100, DHC-6-200 and 1 more. Effective Apr 7, 1975 - [AD 74-22-06](https://openairdocs.org/ad/74-22-06): Horizontal Stabilizer · Viking Air DHC-6-1, DHC-6-100, DHC-6-200 and 1 more. Effective Oct 23, 1974 - [AD 74-08-11](https://openairdocs.org/ad/74-08-11): Side Seat Rail Attachment · Viking Air DHC-6-1, DHC-6-100, DHC-6-200 and 1 more. Effective Apr 18, 1974 - [AD 73-19-01](https://openairdocs.org/ad/73-19-01): Prop Auto-feathering System · Viking Air DHC-6-100, DHC-6-200 and DHC-6-300 with STC SA2608WE. Effective Feb 18, 1974 - [AD 73-20-05](https://openairdocs.org/ad/73-20-05): Float To Fuselage Bolts · Viking Air DHC-6-1, DHC-6-100, DHC-6-200 and 1 more. Effective Oct 3, 1973 Historical (superseded or no longer in force): - [AD 2008-11-10](https://openairdocs.org/ad/2008-11-10) (historical): Wing front spar adapter assemblies · Viking Air DHC-6-1, DHC-6-100, DHC-6-200 and 1 more. Effective Aug 5, 2008 - [AD 2008-03-01](https://openairdocs.org/ad/2008-03-01) (historical): Structural components · Viking Air DHC-6-1, DHC-6-100, DHC-6-200 and 1 more. Effective Mar 6, 2008 - [AD 99-18-13](https://openairdocs.org/ad/99-18-13) (historical): Airplane Flight Manual (AFM) - Limitation Section - power levers · Viking Air DHC-6-1, DHC-6-100, DHC-6-200 and 1 more. Effective Oct 8, 1999 - [AD 97-07-10](https://openairdocs.org/ad/97-07-10) (historical): Wing Struts · Viking Air DHC-6-1, DHC-6-100, DHC-6-200 and 1 more. Effective May 23, 1997 - [AD 89-24-06 R1](https://openairdocs.org/ad/89-24-06-R1) (historical): Elevator Quadrant · Viking Air DHC-6-1, DHC-6-100, DHC-6-200 and 1 more. Effective Sep 13, 1990 - [AD 83-02-02](https://openairdocs.org/ad/83-02-02) (historical): Structural Components · Viking Air DHC-6-1, DHC-6-100, DHC-6-200 and 1 more. Effective Feb 4, 1983 - [AD 80-13-12 R1](https://openairdocs.org/ad/80-13-12-R1) (historical): Longerons · Viking Air DHC-6-1, DHC-6-100, DHC-6-200 and 1 more. Effective Jun 19, 1981 - [AD 80-13-10](https://openairdocs.org/ad/80-13-10) (historical): Y-Joint Main Landing Gear Legs · Viking Air DHC-6-1, DHC-6-100, DHC-6-200 and 1 more. Effective Jul 1, 1980 All 67: https://openairdocs.org/model/boeing-dhc-6-300/ads.md ## Registered aircraft None registered with this model now. ## NTSB investigations None matched to aircraft with this model. ## FAA accident and incident reports None matched to aircraft with this model. ## Service difficulty reports (655, 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 HKGA20260602001](https://openairdocs.org/sdr/HKGA20260602001), Jun 2, 2026: CAP. LOOSE. HYDRAULIC PUMP CIRCUIT BREAKER POPPED IN FLIGHT AND MAIN SYSTEM WOULD NOT HOLD PRESSURE. CREW DECLARED AN EMERGENCY AND SAFELY LANDED AT KHYI. MAINTENANCE FOUND - [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 S9BA202503110001](https://openairdocs.org/sdr/S9BA202503110001), Mar 7, 2025: SWITCH. LOOSE. 03/07/2025 CREW REPORTED:'AILERON ACT. TRIM CB POPPED IN FLIGHT ELECTRICAL BURNING SMELL." MAINTENANCE INSPECTED DEFERRED THIS ITEM AS PER MEL 27-2. MAINTENANCE - [SDR 2025FA0000005](https://openairdocs.org/sdr/2025FA0000005), Dec 23, 2024: CONTROL CABLE. DAMAGED. UPON VISUAL INSPECTION OF PITCH SERVO AREA IT WAS NOTED THAT THERE APPEARS TO BE ELEVATOR CABLE DAMAGE ON THE CAPSTAN COVER OF THE PITCH SERVO. DAMAGE ON ONE OF - [SDR S9BA20240005](https://openairdocs.org/sdr/S9BA20240005), Oct 16, 2024: DOUBLER. CORRODED. CORROSION FOUND BEYOND MFR LIMITS ON LH WING WS310.O FORE FLAP HINGE SKIN DOUBLERS. FOLLOWING PART NUMBERS WERE REMOVED AND REPLACED IAW DHC SRM. 969401-7 AND 9 - [SDR S9BA20240004](https://openairdocs.org/sdr/S9BA20240004), Oct 16, 2024: STRINGER. CORRODED. CORROSION BEYOND MFR LIMITS ON STRINGERS AND INTERCOSTALS BETWEEN FS262 AND FS288 BETWEEN WL -4.68 AND -10.28. FOLLOWING PART NUMBERS WERE REMOVED AND REPLACED - [SDR S9BA2024060403](https://openairdocs.org/sdr/S9BA2024060403), May 31, 2024: MOUNT FITTING. BROKEN. CREW REPORTED; WHEN RIGHT FUEL LEVER SELECTED OFF, RIGHT ENGINE DID NOT SHUT DOWN. MAINTENANCE INSPECTED ENGINE CONTROL CABLES AND FOUND CABLES IN BIND. FURTHER - [SDR S9BA20240002](https://openairdocs.org/sdr/S9BA20240002), May 28, 2024: TRIM TAB. BROKEN. IN SHALLOW CLIMB A DUPLICATABLE VIBRATION CAN BE FELT IN THE YOKE AND AIRPLANE. INSPECTION OF THE AIRCRAFT FOUND THE LH ELEVATOR TRIM TAB ATTACH BRACKET BROKEN. - [SDR S9BA20240402001](https://openairdocs.org/sdr/S9BA20240402001), Apr 1, 2024: LONGERON. CRACKED. RH ENGINE NACELLE OUTBOARD LOWER LONGERON CRACKED. - [SDR S9BA202307210005](https://openairdocs.org/sdr/S9BA202307210005), Jul 21, 2023: FRAME. CORRODED. RH SIDE FRAME AT FS219 CORRODED BEYOND MANUAL LIMITS. - [SDR S9BA202307210004](https://openairdocs.org/sdr/S9BA202307210004), Jul 21, 2023: FRAME. CORRODED. LH SIDE FRAME AT FS218 CORRODED BEYOND MANUAL LIMITS. - [SDR S9BA20230003](https://openairdocs.org/sdr/S9BA20230003), Mar 10, 2023: STRUCTURE. CORRODED. RH UPPER WING SKIN DOUBLER (.063) CORROSION WS135.0 (.040 DEEP) AT MAIN SPAR BEYOND SRM LIMITS - [SDR S9BA20230002](https://openairdocs.org/sdr/S9BA20230002), Mar 10, 2023: STRUCTURE. CORRODED. LH UPPER WING SKIN DOUBLER (.063 THICK) CORROSION WS125.50 (.014 DEEP) AND 129.00 (.013 DEEP) AT MAIN SPAR BEYOND SRM LIMITS. - [SDR S9BA20230001](https://openairdocs.org/sdr/S9BA20230001), Feb 22, 2023: STRUCTURE. CORRODED. SUPPLEMENT REPORT TO CONTROL NUMBER 2023F00064. PLEASE CHANGE CONTROL NUMBER FROM 2023F00064 TO OPERATOR UNIQUE CONTROL NUMBER S9BA20230001. ALL OTHER INFORMATI - [SDR 2023F00064](https://openairdocs.org/sdr/2023F00064), Feb 22, 2023: STRUCTURE. CORRODED. RH SIDE FUSELAGE SKIN (.050 THICK) CORRODED (.023 DEEP) BEYOND SRM LIMITS (.006) AT FS131-FS132 AT TOP OF WINDOW CUTOUT. - [SDR 2022FA0000754](https://openairdocs.org/sdr/2022FA0000754), Dec 9, 2022: PROXIMITY SWITCH. LOOSE. DURING MAINTENANCE FLIGHT, LEFT NOSE GEAR DOWN LIGHT DID NOT ILLUMINATE. ADJUSTED PROXIMITY SWITCH TO ILLUMINATE NOSE GEAR DOWN LIGHT. JACKED AIRCRAFT AND GEAR - [SDR 2021FA0000372](https://openairdocs.org/sdr/2021FA0000372), Dec 10, 2021: AUTOPILOT SYS. MALFUNCTIONED. DURING TEST FLIGHT FOR THE INSTALLATION OF AUTOPILOT SYSTEM GENESYS S-TEC3100 INTO THE DHC-6 AIRCRAFT SEVERAL PROBLEMS BECAME APPARENT. THESE ISSUES WERE: PITCH - [SDR 2021FA0000128](https://openairdocs.org/sdr/2021FA0000128), May 7, 2021: FLOORBOARD. DAMAGED. FLOOR BOARDS BOWED/WARPED/SAGGED CAUSING POOR SEAT LOCK PIN ENGAGEMENT. - [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 CA190801003](https://openairdocs.org/sdr/CA190801003), Aug 1, 2019: BUSS BAR. MISMANUFACTURED. (CAN) NEW BUS BAR RECEIVED FROM VIKING AIR LIMITED. SLOTTED END DOES NOT FIT OVER EXTERNAL POWER RECEPTACLE MS3506-1. (REF: IPC PSM 1-63-4, CH 24-40-00, FIG 1, - [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 CA190724012](https://openairdocs.org/sdr/CA190724012), Jul 16, 2019: SWITCH. MALFUNCTIONED. (CAN) THE AUTO FEATHER ARM LIGHT DID NOT TURN ON DURING THE TAKE-OFF SLIDE. THE AUTO FEATHER SWITCH WAS REPLACED, AND THE SYSTEM FUNCTION CHECKED SERVICEABLE. ( - [SDR CA190529010](https://openairdocs.org/sdr/CA190529010), May 28, 2019: BOLT. DEFECTIVE. (CAN) A REPLACEMENT ATTACH BOLT FOR THE FLIGHT CONTROL RODS WAS PURCHASED & RECEIVED BY NWA STORES. UPON PRE-INSTALLATION INSPECTION OF THE BOLT, (P/N NAS464P5- - [SDR CA190521017](https://openairdocs.org/sdr/CA190521017), May 21, 2019: BLOCK. MISMANUFACTURED. (CAN) WE RECENTLY RECEIVED A PURCHASED SYSTEM 65 S-TEC KIT AND THERE IS A MICARTA BLOCK REQUIRED FOR THE INSTALLATION OF THE TRIM SERVO THAT IS NOT MANUFACTURED - [SDR CA190717013](https://openairdocs.org/sdr/CA190717013), May 7, 2019: SKI. CRACKED. (CAN) ON MAY 7, 2019, AIR INUIT HAD AN INCIDENT WITH A DHC6-300 (C-XXXX). THE AIRCRAFT WAS OPERATE ON SKI ON AN OFF STRIP WHEN HE SUDDENLY LOST CONTROL OF THE A - [SDR CA190416017](https://openairdocs.org/sdr/CA190416017), Apr 15, 2019: CABLE. SLIPPED. (CAN) WHEN PERFORMING SERVO MOUNT CLUTCH SLIP TEST ON APS-65 AUTOPILOT SYSTEM INSTALLED ON DHC6-300 AIRCRAFT IN ACCORDANCE WITH APS-65 MAINTENANCE MANUAL COLLIN - [SDR CA190410021](https://openairdocs.org/sdr/CA190410021), Apr 10, 2019: AUTOPILOT SYS. MALFUNCTIONED. (CAN) APS-65 AUTOPILOT INSTALLED IN DHC6-300 BY MANUFACTURERS SERVICE BULLETIN SB 6-505 IS NOT MENTIONED IN THE AIRCRAFT MAINTENANCE MANUAL, HAS NO INSTRUCTIONS - [SDR CA180423022](https://openairdocs.org/sdr/CA180423022), Apr 23, 2018: AUDIO CONTROL. MALFUNCTIONED. (CAN) IT HAS BEEN DISCOVERED THAT WHEN BOTH AUDIO PANEL MIC SELECTIONS ARE SELECTED TO COM POSITION 3 A PTT TRANSMIT ON CO-PILOT`S SIDE ALSO CAUSES THE PILOT SI - [SDR HKGA20170802005](https://openairdocs.org/sdr/HKGA20170802005), Aug 2, 2017: LANDING GEAR. CRACKED. DURING A MAIN LANDING GEAR REPLACEMENT, A 2" CRACK WAS NOTED ON THE MAIN LANDING GEAR WELD. LANDING GEAR LEG WAS REPLACED WITH OVERHAULED UNIT IAW MAINTENANCE M - [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 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 CA160317013](https://openairdocs.org/sdr/CA160317013), Feb 3, 2016: LEVER. FAILED. (CAN) STEERING LEVER FAILED DURING TAXI. - [SDR CA160317012](https://openairdocs.org/sdr/CA160317012), Feb 3, 2016: LEVER. FAILED. (CAN) STEERING LEVER BROKE DURING TAXI. - [SDR 2016FA0000000](https://openairdocs.org/sdr/2016FA0000000), Jan 1, 2016: OIL SYSTEM. OIL CONSUMPTION. ENGINE WAS INSTALLED AFTER O/H. GROUND RUN AND PERFORMANCE RUN WAS SATISFACTORY. ACFT WAS FLIGHT TESTED FOR 45 MINUTES, 2 TIMES WAS RUNNING GOOD. ACFT WAS DEPAR - [SDR CA151205001](https://openairdocs.org/sdr/CA151205001), Dec 3, 2015: AXLE. CRACKED. (CAN) DURING ROUTINE EMMA INSPECTION AXLE P/N C6UM1134-27 WAS FOUND TO HAVE A SUSPECTED CRACK AROUND BARREL APPROXIMATELY 3" LONG. PART WAS REPLACED AND AIRCRAF - [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 CA151113004](https://openairdocs.org/sdr/CA151113004), Nov 13, 2015: CONNECTOR. UNSECURE. (CAN) NEW BRUSH BLOCK ASSEMBLIES RECEIVED INCORRECTLY ASSEMBLED. CAUSES THE ATTACHING CONNECTOR TO NOT INSTALL COMPLETELY AND WIRES FROM THE CONNECTOR TO BRUSH - [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 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 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 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 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 All 655: https://openairdocs.org/model/boeing-dhc-6-300/reports.md ## STCs that may be installed (OpenAirDocs) (259, first 50) Approved for this model: the STC's model list names it on its data sheet, or a series that includes it. In force first, then newest. The registry doesn't record which STCs an aircraft has. - [STC SA01800SE](https://openairdocs.org/stc/SA01800SE): Fabrication and installation of new or replacement of existing instrument panel lights dimmer control. TCW Technologies, LLC - [STC SA01861SE](https://openairdocs.org/stc/SA01861SE): Fabrication and installation of Landing Light Controller. TCW Technologies, LLC - [STC SA1841NM](https://openairdocs.org/stc/SA1841NM): Installation of larger windows and the lowering of the seats. Twin Otter STC Holdings, LLC - [STC SA12430IB](https://openairdocs.org/stc/SA12430IB): Installation of the Garmin G1000 NXi Integrated Flight Deck System. Aerocorp Avionics Solutions Inc - [STC SA04837NY](https://openairdocs.org/stc/SA04837NY): Installation of AeroLED's Holdings, LLC., position lights, navigation lights, strobe lights and beacon lights. AeroLED's Holdings, LLC - [STC SA02019SE-D](https://openairdocs.org/stc/SA02019SE-D): Installation of Garmin Model GTN 625/635/650; 725/750 Navigation System. Garmin International Inc - [STC SA800EA](https://openairdocs.org/stc/SA800EA): Installation of Whelen Anti-Collision, Position, or Anti-Collision/Position Light System, and applicable associated power supplies. Whelen Aerospace Technologies - [STC SA7738SW](https://openairdocs.org/stc/SA7738SW): Installation of a freon air conditioning system. Twin Otter STC Holdings LLC - [STC SA943EA](https://openairdocs.org/stc/SA943EA): Replacement of de Havilland wing bleed air ducting with alternate ducting. Texas Air Services Inc - [STC SA03749NY](https://openairdocs.org/stc/SA03749NY): Installation of Garmin G950 Integrated Flight Deck System. Aerocorp Avionic Solutions Inc - [STC SA12280IB](https://openairdocs.org/stc/SA12280IB): Installation of Wing and Outboard Fore Flap Trailing Edge Assemblies. Unity Aviation Canada Ltd - [STC SA11158SC](https://openairdocs.org/stc/SA11158SC): Demonstration of aircraft tolerance to potential electromagnetic interference from certain Transmitting Potable Electronic Devices (T-PEDS). Liberty Partners Inc - [STC SA12101IB](https://openairdocs.org/stc/SA12101IB): Installation of Cabin Interior Upgrade. De Havilland Aircraft of Canada Limited - [STC SA00887LA](https://openairdocs.org/stc/SA00887LA): Installation of Pitot Heater Fail Lights. Team J.A.S - [STC SA02306LA](https://openairdocs.org/stc/SA02306LA): Modify existing Wipaire Inc.'s STC No. SA100CH installed on Viking Air Limited DeHavilland Model-6-300 airplanes. Team J.A.S - [STC SA02556LA](https://openairdocs.org/stc/SA02556LA): Installation of Passenger Utility Seats. Team J.A.S - [STC SA02649LA](https://openairdocs.org/stc/SA02649LA): Installation of Max-Viz 2300 Enhanced Vision System. Team J.A.S - [STC SA02682LA](https://openairdocs.org/stc/SA02682LA): This STC approves the Viking Air Limited DHC-6-300 landplane to operate in the commuter category, to takeoff at a maximum weight of 14,000 pounds and land at a maximum weight of 13,800 pounds, the installation of Pratt & Whitney Canada PT6A-34 engines rated at 750 SHP, and associated modifications. Team J.A.S - [STC SA02730LA](https://openairdocs.org/stc/SA02730LA): Installation of High-Flow 250 AMP Starter-Generators. Team J.A.S - [STC SA02806LA](https://openairdocs.org/stc/SA02806LA): Structural Provisions for AFT Camera Hatch. Team J.A.S - [STC SA02738CH](https://openairdocs.org/stc/SA02738CH): Installation of L-3 Communications Avionics Systems. Acron Aviation Inc - [STC SA04046CH PAGE 2](https://openairdocs.org/stc/SA04046CH%20PAGE%202): Installation of L-3 GENESIS (TM) Electronic Standby Instrument System (ESI-500/MAG-500). Acron Aviation Inc - [STC SA8709SW](https://openairdocs.org/stc/SA8709SW): Installation of a Traffic Alert and Collision Avoidance System I (TCAS I) model TCAS 791/791A. Acron Aviation Inc - [STC SA09887AC](https://openairdocs.org/stc/SA09887AC): Installation of an Avionica MK-III mini Quick Access Recorder (QAR) and optional 4G or LTE Avionica Cellular Module (avCM. Aircraft Systems and Manufacturing Inc - [STC SA39CH](https://openairdocs.org/stc/SA39CH): Installation of an Amphibian Landing Gear Position Advisory System/Laser Gear Advisory System. Wipaire Inc - [STC SA00221IB](https://openairdocs.org/stc/SA00221IB): Installation of the Nose Cone Research Provisions. Rocky Mountain Aircraft - [STC SA02386AK](https://openairdocs.org/stc/SA02386AK): Replacement of existing landing and/or taxi light reflector and bulbs with Light Emitting Diode (LED) lighting systems. AeroLED's Holding LLC - [STC SA00196IB](https://openairdocs.org/stc/SA00196IB): Installation of the Replacement Aluminum Cargo Floor Panels. Rocky Mountain Aircraft - [STC SA02380LA](https://openairdocs.org/stc/SA02380LA): Re-Life of the Viking Air Limited Model DHC-6 Series 100, 200 and 300 fuselage, horizontal stabilizer, and vertical stabilizer. IKHANA Group Inc - [STC SA02658SE](https://openairdocs.org/stc/SA02658SE): Installation of Garmin GI 275 Multi-Function Display System. Garmin International Inc - [STC SA00171IB](https://openairdocs.org/stc/SA00171IB): Installation of the Radar Altimeter Mounts (Structural Provisions Only). Rocky Mountain Aircraft - [STC SA00152IB](https://openairdocs.org/stc/SA00152IB): Installation of High Back Seat Modification. Kenn Borek Air Ltd - [STC SA02457LA](https://openairdocs.org/stc/SA02457LA): Re-Life flight controls. IKHANA Group Inc - [STC SA3532NM](https://openairdocs.org/stc/SA3532NM): Installation of Hartzell/Raisbeck Quiet Turbofan Propeller System. Suitable for DHC-6-300 airplanes with PT6A-27 engines. Raisbeck Engineering Inc - [STC SA00129IB](https://openairdocs.org/stc/SA00129IB): Decommission of Standard Operators Options (S.O.O.) 6095 Fuel System. Kenn Borek Air Ltd - [STC SA00085IB](https://openairdocs.org/stc/SA00085IB): Installation of Elevator Replacement Trailing Edge. Rocky Mountain Aircraft - [STC SA02010WI](https://openairdocs.org/stc/SA02010WI): Installation of the Mid-Continent Instruments & Avionics MD23 FLEX Custom Function Display (CFD). Mid-Continent Instruments and Avionics - [STC SA04550AT](https://openairdocs.org/stc/SA04550AT): Main Wheel and Brake Assembly for the Viking Air DHC-6 Series aircraft. PMA Design and Manufacturing - [STC SA1065GL](https://openairdocs.org/stc/SA1065GL): Install Aircraft Wheel and Brake CONVERSION Kit 199-92, N/C. KAMAN Corporation Aircraft Wheel and Brake LLC - [STC SA00061IB](https://openairdocs.org/stc/SA00061IB): Activation of the Garmin GTN 750 (Xi) TAWS-A. Rocky Mountain Aircraft - [STC SA00060IB](https://openairdocs.org/stc/SA00060IB): Installation of LED Replacement Cockpit Panels. Rocky Mountain Aircraft - [STC SA00054IB](https://openairdocs.org/stc/SA00054IB): Installation of Pitot Heat Indication System. Rocky Mountain Aircraft - [STC SA00042IB](https://openairdocs.org/stc/SA00042IB): Installation of Engine Chip Detectors. Rocky Mountain Aircraft - [STC SA02254AK](https://openairdocs.org/stc/SA02254AK): Installation of "Single Screen", "2 or 3 Screen", "Dual Screen", or "4 or 6 screen". Genesys Aerosystems Inc - [STC SA02444AK](https://openairdocs.org/stc/SA02444AK): Approval of the L-3 Communications NGT 9000/9000R ADS-B system installed. ADS-B Technologies LLC - [STC SA04701NY](https://openairdocs.org/stc/SA04701NY): Replacement of Fixed Wing Control Cables. Thunder Bay Aviation Ltd - [STC SA04698NY](https://openairdocs.org/stc/SA04698NY): Approval of an Controlled Aircraft Equipment Configuration providing for the authorized use of Transmitting Portable Electronic Devices (TPED). Kilroy Aviation LLC - [STC SA5970NM](https://openairdocs.org/stc/SA5970NM): MK VI Ground Proximity Warning System installed and maintained in accordance with Honeywell Top Drawing No. 960-2177, Revision A, dated June 28, 1993, or later FAA Approved revision. Honeywell International Inc - [STC SA00282NY](https://openairdocs.org/stc/SA00282NY): Replacement latches on upper and lower cargo door. PMA Design & Manufacturing Inc - [STC SA00160LA](https://openairdocs.org/stc/SA00160LA): Installation of IKHANA Aircraft Services wing box assembly. IKHANA Group Inc All 259: https://openairdocs.org/model/boeing-dhc-6-300/stcs.md ## The same model under other registry codes Amateur-built copies and renamed makers get their own codes. - [Dehavilland DHC-6-300](https://openairdocs.org/model/dehavilland-dhc-6-300): 59 registered aircraft, registry code 2802630 - [Dehavilland Acft Of Canada DHC 6-300](https://openairdocs.org/model/dehavilland-acft-of-canada-dhc-6-300): 4 registered aircraft, registry code 2805155 - [Viking Air DHC-6-300](https://openairdocs.org/model/viking-air-dhc-6-300): 0 registered aircraft, registry code 5026394 --- 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.