# Dehavilland DHC-6

- Type: Aircraft model (FAA registry)
- Registry code: 2802603
- Manufacturer (registry): DEHAVILLAND
- Model: DHC-6
- Aircraft type: Fixed wing multi engine
- Category: Airplane
- Engines: 2 · Turbo-prop
- Seats: 24
- Weight class: 12,500 to 19,999 lb
- Certification: Type certificated
- Registered aircraft: 3
- Page: https://openairdocs.org/model/dehavilland-dhc-6

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.

None matched.

## Registered aircraft (3)

- [N64116](https://openairdocs.org/aircraft/N64116): [Twin Otter International Ltd](https://openairdocs.org/faa-owner/TWIN%20OTTER%20INTERNATIONAL%20LTD), [Las Vegas, NV](https://openairdocs.org/faa-place/NV/Las%20Vegas), S/N 157
- [N718KW](https://openairdocs.org/aircraft/N718KW): [Warren Transportation LLC](https://openairdocs.org/faa-owner/WARREN%20TRANSPORTATION%20LLC), [Dallas, TX](https://openairdocs.org/faa-place/TX/Dallas), built 1968, S/N 120
- [N903RT](https://openairdocs.org/aircraft/N903RT): [Ikhana Aircraft Holdings LLC](https://openairdocs.org/faa-owner/IKHANA%20AIRCRAFT%20HOLDINGS%20LLC), [Murrieta, CA](https://openairdocs.org/faa-place/CA/Murrieta), S/N 51

## NTSB investigations (5)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB LAX75AL034](https://openairdocs.org/ntsb/LAX75AL034), Jan 9, 1975: Dehavilland DHC-6 (N6383), Whittier, CA, destroyed, 14 fatal
- [NTSB CHI73AC078](https://openairdocs.org/ntsb/CHI73AC078), Mar 26, 1973: Dehavilland DHC-6 (N7705), Savoy, IL, destroyed, 1 fatal
- [NTSB NYC70AN086](https://openairdocs.org/ntsb/NYC70AN086), Feb 10, 1970: Dehavilland DHC-6 (N124PM), Waterford, CT, substantial damage, 5 fatal
- [NTSB ANC69A0045](https://openairdocs.org/ntsb/ANC69A0045), Mar 13, 1969: Dehaviland DHC-6 (N4901), Minchumina, AK, destroyed, 1 fatal
- [NTSB LAX69A0028](https://openairdocs.org/ntsb/LAX69A0028), Nov 23, 1968: Dehavilland DHC-6 (N7666), Santa Ana, CA, destroyed, 9 fatal

## FAA accident and incident reports (3)

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [Incident 19790523027709I](https://openairdocs.org/incident/19790523027709I), May 23, 1979: Dhav DHC6/ (N64139), Los Angeles, CA, Minor damage. Taxiing aircraft collided with moving ground vehicle.
- [Accident 19750109005842A](https://openairdocs.org/incident/19750109005842A), Jan 9, 1975: Dhav DHC6* (N6383), Whittier, CA, Destroyed, 10 fatal
- [Accident 19730326006109A](https://openairdocs.org/incident/19730326006109A), Mar 26, 1973: Dhav DHC6300 (N7705), Savoy, IL, Destroyed

## Service difficulty reports (194, newest 50)

As reported by operators and repair stations, by the model named in the report.

- [SDR 2026FA0000824](https://openairdocs.org/sdr/2026FA0000824), Oct 8, 2026: TRIM TAB. FAULTED. AILERON TRIM INDICATION, AILERON TRIM TAB POSITION INDICATION. INTERMITTENT ERRATIC FLICKERING OF THE AILERON TRIM INDICATION. SYMPTOM APPEARS RANDOMLY, UNRELAT
- [SDR 2024FA0000767](https://openairdocs.org/sdr/2024FA0000767), Oct 10, 2024: PROPELLER. FLUCTUATES. LH PROP REVERSE RPM HIGH/AT MAX CAUSED PROP FLUCTUATIONS WHEN ENGAGED TO REVERS UPON LANDING AT KRVS. THIS CAUSED RUNWAY EXCURSION INTO GRASS. A&P ADJUSTED MAX 
- [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 2018FA0000200](https://openairdocs.org/sdr/2018FA0000200), Jul 2, 2018: TRANSDUCER. FAILED. TORQUE PRESSURE TRANSDUCER FAILED
- [SDR 2018FA0000202](https://openairdocs.org/sdr/2018FA0000202), Jun 27, 2018: FASTENER. LOOSE. DURING INSPECTION, FOUND LOOSENING JO-BOLTS ATTACHING THE RT AND LT FLANGES OF THE CENTER ELEVATOR HINGE BRACKET WHERE THE BRACKET FLANGES ATTACH TO THE AFT HOR
- [SDR FAA2018052500164](https://openairdocs.org/sdr/FAA2018052500164), May 25, 2018: PRESSURE SWITCH. INTERMITTENT. AFTER TAKE OFF, AT 300 FT, THE NR 2 PROPELLER AUTOFEATHERED, THE AUTOFEATHER WAS SELECTED OFF AND THE PROPELLER UNFEATHERED AND RETURNED TO NORMAL OPS. TORQUE W
- [SDR 2018FA0000040](https://openairdocs.org/sdr/2018FA0000040), Jan 16, 2018: BELLCRANK. LOOSE. RUDDER TORQUE TUBE, BELL CRANK ATTACHMENT RIVETS AND BELL CRANK SHOWING SIGNS OF BEING LOOSE. ATTACH RIVETS ARE SMOKING.
- [SDR S9BA201612040004](https://openairdocs.org/sdr/S9BA201612040004), Dec 2, 2016: DUCT CLAMP. CRACKED. ON TAKEOFF, RIGHT T HANDLE FIRE WARNING.
- [SDR CA160125010](https://openairdocs.org/sdr/CA160125010), Jan 15, 2016: DOOR. MISMANUFACTURED. (CAN) DURING ROUTINE MAINTENCE, FOUND 2 PROBLEMS WITH THE ICA`S. ON AN EMMA, EQUALIZED MAINTENANCE MAXIMUM AVAILABILITY, INSPECTION CARD 15, SECTION 3B, THE FLI
- [SDR CA160111012](https://openairdocs.org/sdr/CA160111012), Jan 11, 2016: SEAL. DEFECTIVE. (CAN) FUEL MOTIVE LINE STRAINER, CHECK VALVE FOUND TO HAVE A SWOLLEN RUBBER SEAL WHICH PREVENTED THE FLAPPER FROM SEALING. SPRING UNABLE TO RETURN VALVE TO CLOS
- [SDR CA151102015](https://openairdocs.org/sdr/CA151102015), Nov 2, 2015: AILERON. MISMANUFACTURED. (CAN) PRODUCTION HAS REPORTED THAT THE HUB, FORK, AILERON OUTER WING, HAS BEEN MFG INCORRECTLY. IT HAS BEEN FOUND THAT HUBS WERE MISSING THE .03" X 45 CHAMFER A
- [SDR CA151029025](https://openairdocs.org/sdr/CA151029025), Oct 14, 2015: ROD END. SEIZED. (CAN) DURING GROUND RUN-UP FCU CONTROL ROD, PN C6CE1398-3 HAD STIFF/SEIZED END BEARINGS, PN DSC4-3A ON NR 2 ENGINE. FCU ROD AND END BEARINGS REPLACED.
- [SDR CA150721005](https://openairdocs.org/sdr/CA150721005), Jul 10, 2015: DOOR. OPEN. (CAN) AN AIR OPERATOR RECENTLY EXPERIENCED AN EVENT WHERE THE MAIN CABIN PASSENGER DOOR OPENED IN FLIGHT. THIS HAPPENED ON APPROACH IN TURBULENT WEATHER CONDITI
- [SDR 2015FA0000367](https://openairdocs.org/sdr/2015FA0000367), Jul 6, 2015: STRUCTURE. CRACKED. THE ACFT FITTED WITH AMPHIB FLOATS HAD A NOSE GEAR FAILURE PREVIOUSLY AT 344.5 HRS. INITIAL FINDINGS OF THE FAILURE WERE THOUGHT TO BE FROM INTERGRANULAR CORROS
- [SDR CA150622004](https://openairdocs.org/sdr/CA150622004), Jun 19, 2015: WIRE. CORRODED. (CAN) HF ANTENNA WIRE FAILED DUE TO CORROSION, RESULTING FROM WATER INGRESS INTO THE FEED THROUGH IPC REFERENCE 23-10-00 FIG 1.
- [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 CA141104011](https://openairdocs.org/sdr/CA141104011), Nov 4, 2014: PRESSURE SWITCH. FAILED. (CAN) FUEL BOOST PUMP LOW PRESSURE SWITCH FAILURE. MFG ENGINEERING CONTINUING TO INVESTIGATE.
- [SDR CA141031024](https://openairdocs.org/sdr/CA141031024), Oct 31, 2014: ROD END. SEIZED. (CAN) ROD END IS FOUND TO BE SEIZING. ROD FOUND TO HAVE STIFF ROD ENDS AS WELL. RODS REMOVED AND REPLACED. RODS ARE IN THE ENGINE FUEL CONTROL SYSTEM.
- [SDR CA141031023](https://openairdocs.org/sdr/CA141031023), Oct 31, 2014: ROD END. SEIZED. (CAN) ROD END WAS FOUND TO BE SEIZING. ROD FOUND TO HAVE STIFF ROD ENDS AS WELL. TWO RODS REMOVED AND REPLACED. RODS ARE IN THE ENGINE FUEL CONTROL SYSTEM.
- [SDR CA140912020](https://openairdocs.org/sdr/CA140912020), Sep 10, 2014: COVER. CRACKED. (CAN) PRODUCTION HAS REPORTED THAT THE LIGHT COVER ON THE WING TIP STROBE LIGHT, RED IS CRACKED AROUND THE SCREW ATTACHMENT HOLE.
- [SDR CA140912019](https://openairdocs.org/sdr/CA140912019), Sep 10, 2014: COVER. CRACKED. (CAN) THE LIGHT COVER ON THE WING TIP STROBE LIGHT, GREEN, IS CRACKED AROUND THE SCREW ATTACHMENT HOLE.
- [SDR CA140717016](https://openairdocs.org/sdr/CA140717016), Jul 16, 2014: CHECK VALVE. MISSING. (CAN) DURING SCHEDULED MAINTENANCE INSPECTION THE INTERNAL FUEL SCREEN WAS FOUND TO BE MISSING FROM THE CHECK VALVE ASSEMBLY, INVESTIGATING.
- [SDR CA140717015](https://openairdocs.org/sdr/CA140717015), Jun 17, 2014: BEARING. DAMAGED. (CAN) BEARING IN THE LOWER RUDDER HINGE FITTING FOUND DAMAGED & NO SIGNS OF LUBRICATION. CONTINUING TO INVESTIGATE.
- [SDR CA140414010](https://openairdocs.org/sdr/CA140414010), Apr 11, 2014: HEAT EXCHANGER. MISREPAIRED. (CAN) HEAT EXCHANGER ASSEMBLY, C6SF1515-3 HAS HAD ALL 48 PLUG WELDS GROUND FLUSH TO THE PARENT METAL AND POLISHED. GRINDING OF THE WELDS IS NOT ALLOWED IAW THE 
- [SDR 2014FA0000157](https://openairdocs.org/sdr/2014FA0000157), Mar 13, 2014: BOLT. LOOSE. DURING REMOVAL OF MLG ASSEMBLIES, SEVERAL MOUNTING BOLTS WERE FOUND LOOSE AND BACKED OFF, CAUSING DAMAGE TO ADJACENT STRUCTURE.
- [SDR CA140313015](https://openairdocs.org/sdr/CA140313015), Jan 14, 2014: SQUIB. MISINSTALLED. (CAN) DURING FIRST EMMA INSPECTIONS, RT FIRE EXTINGUISHER SQUIB FOUND WIRED BACKWARD. DURING TEST PRESSING THE FIRE BOTTLE BUTTON ONLY RESULTED IN A BREAKER POP
- [SDR CA131209009](https://openairdocs.org/sdr/CA131209009), Dec 9, 2013: BEARING. FAILED. (CAN) SRM FOR THE ACFT SPECIFICALLY STATES THAT STAKING BEARINGS IN HINGE ARMS IS NOT ALLOWED. IT HAS COME TO OUR ATTENTION THAT THIS SEEMS TO BE A SOMEWHAT STA
- [SDR CA130923017](https://openairdocs.org/sdr/CA130923017), Sep 20, 2013: PRESSURE SWITCH. BURNED. (CAN) DURING CRUISE WHEN THE CREW SMELLED SMOKE. THERE WAS NO IMMEDIATE CAS MESSAGE THAT ANYTHING WAS WRONG BUT IT SOON DISPLAYED THAT THE HYDRAULIC PUMP AAT-60
- [SDR CA130819019](https://openairdocs.org/sdr/CA130819019), Aug 16, 2013: BULKHEAD. GOUGED. (CAN) RIGHT PROPELLER HAS LIGHT GOUGE MARKS ON THE PROPELLER SIDE OF THE PROPELLER SPINNER MOUNTING PLATE. ACFT MFG IS IN CONTACT WITH THE PROPELLER MANUFACTURE
- [SDR CA130724010](https://openairdocs.org/sdr/CA130724010), Jul 22, 2013: FLAPPER VALVE. OBSTRUCTED. (CAN) UPON INSPECTION OF THE FLAPPER VALVE IN CELL NR 5 A PORTION OF THE RETAINING CHAIN FOR FUEL CAP P/N 38040-1 WAS FOUND WEDGED IN THE FLAPPER KEEPING IT FRO
- [SDR CA130717010](https://openairdocs.org/sdr/CA130717010), Jun 21, 2013: VALVE. DAMAGED. (CAN) VTS HAS REPORTED THAT FRETTING DAMAGE HAS BEEN FOUND ON THE VALVES INSTALLED IN THE OIL COOLER.
- [SDR CA130610015](https://openairdocs.org/sdr/CA130610015), Jun 9, 2013: LINE. LEAKING. (CAN) THE PILOTS NOTICED A FUEL ODOR IN THE CABIN THAN NOTIFIED MAINTENANCE. THE CABIN ODOR WAS THE RESULT OF A LEAKING FUEL LINE LOCATED IN THE FUEL GALLEY ARE
- [SDR CA130613009](https://openairdocs.org/sdr/CA130613009), Jun 7, 2013: ROD. DAMAGED. (CAN) IT HAS BEEN FOUND THAT THE C6CW1083-1 FLAP ROD WAS FOUND SCUFFED AND FOULING ON ROOT RIB C6W1035-15/16. MFG IS CONTINUING TO INVESTIGATE.
- [SDR CA130611002](https://openairdocs.org/sdr/CA130611002), Jun 7, 2013: PISTON. DAMAGED. (CAN) DURING ROUTINE MAINTENANCE OF A NOSE GEAR PN 71-100-31, SN HS033 SUBASSEMBLY PN 71-300-29, IT WAS DISCOVERED THAT THE FLOATING PISTON ASSY PN 71-332-1 WAS
- [SDR CA130510002](https://openairdocs.org/sdr/CA130510002), May 9, 2013: FILTER. SHORTED. (CAN) DURING A TRAINING FLIGHT, THE NR 1 FORWARD BOOST PUMP FAILED, AND THE PILOT NOTIFIED MAINTENANCE, ABOUT THIS FAULT. IT WAS FOUND THE NR 1 FWD BOOST PUMP N
- [SDR CA130430020](https://openairdocs.org/sdr/CA130430020), Apr 30, 2013: ROLLER. WORN. (CAN) IT WAS DETERMINED THIS WEAR WAS THE RESULT OF THE FLAP ROLLERS P/N C6CWM1072-29, ALLOWING TOO MUCH FORE AND AFT MOVEMENT WHEN FLAPS WERE FULLY EXTENDED. N
- [SDR CA130419008](https://openairdocs.org/sdr/CA130419008), Apr 19, 2013: ATTACH FITTING. CORRODED. (CAN) RECEIVING INSPECTION DEPARTMENT HAS FOUND, SOME TRACE AMOUNTS OF SURFACE CORROSION, IN 1 BORE OF THE C6WM1741-27 PIN, WING TO FUSE ATTACHMENT. REAR SPAR. 
- [SDR CA130422013](https://openairdocs.org/sdr/CA130422013), Apr 17, 2013: SHAFT. FAILED. (CAN) DURING THE CHECK FLIGHT TURNING FINALS FOR LANDING, SET 10 FLAPS THEN PILOT FLYING CALLED FOR 20 FLAPS. WHEN 20 WAS SELECTED AND RUNNING HEARD A BANG/SNAP
- [SDR CA130412017](https://openairdocs.org/sdr/CA130412017), Apr 2, 2013: SWITCH. FAILED. (CAN) PILOT ENCOUNTERED LT AUTOFEATHER ACTIVATION WHEN REDUCING TO CLIMB POWER SETTING. PILOT RESUMED TO POWER LEVER SETTING AND PROP UNFEATHERED. PILOT SHUTOFF
- [SDR CA130410016](https://openairdocs.org/sdr/CA130410016), Mar 27, 2013: VALVE STEM. GOUGED. (CAN) MFG PRODUCTION HAS REPORTED THAT THE LT AND RT MAIN WHEEL ASSY OTBD WHEEL HALF, PN 040-21101 VALVE STEMS GOUGING DAMAGE. MFG IS CONTINUING TO INVESTIGATE.
- [SDR CA130221012](https://openairdocs.org/sdr/CA130221012), Feb 18, 2013: PULLEY. DAMAGED. (CAN) VPS 20.03 REQUIRES THAT FPI BE PERFORMED BEFORE ANY SURFACE TREATMENT WHICH COULD RESULT IN OBSCURING OF CRACKS. VPS 20.03 DOES ALLOW FPI TO BE PERFORMED 
- [SDR CA130215013](https://openairdocs.org/sdr/CA130215013), Feb 15, 2013: ROD. DAMAGED. (CAN) VPS 20.03, REQUIRES THAT FPI BE PERFORMED BEFORE ANY SURFACE TREATMENT WHICH COULD RESULT IN OBSCURING OF CRACKS. VPS 20.03 DOES ALLOW FPI TO BE PERFORMED
- [SDR CA130201008](https://openairdocs.org/sdr/CA130201008), Jan 28, 2013: FAIRING. DAMAGED. (CAN) DAMAGE WAS CAUSED BY THE OIL TUBE BONDING LEAD ATTACHMENT BOLT WHICH WAS POSITIONED IN A MANNER THAT RESULTED IN CONTACT WITH THE FAIRING RESULTING IN A S
- [SDR CA130128027](https://openairdocs.org/sdr/CA130128027), Jan 28, 2013: CONNECTOR. UNSECURE. (CAN) THERE ARE CONCERNS THAT AT BS 55, CONNECTOR P34 MAY NOT FULLY ENGAGE WITH THE MATING CONNECTOR J34 DUE TO POSSIBLE INTERFERENCE WITH THE FASTENER HEADS SE
- [SDR CA121221014](https://openairdocs.org/sdr/CA121221014), Dec 18, 2012: LATCH. DAMAGED. (CAN) MFG HAS FOUND, DURING PRODUCTION INSPECTIONS, THAT THERE EXISTS A POSSIBILITY THAT THE PIVOT PIN IN COWL LATCH, PN C6EC1002-95 CAN BECOME DISLODGED FROM T
- [SDR CA121217010](https://openairdocs.org/sdr/CA121217010), Dec 14, 2012: CONNECTOR. UNKNOWN. (CAN) MFG ENGINEERING HAS DETERMINED THAT THERE ARE RELAYS DO NOT HAVE VOLTAGE SUPRESSION. AS A RESULT THERE EXISTS THE POTENTIAL FOR THE GIO CARD TO BE SUBJECT
- [SDR CA121213010](https://openairdocs.org/sdr/CA121213010), Dec 12, 2012: VALVE. MISINSTALLED. (CAN) THERE IS A POSSIBILITY THAT THE STATIC SWITCH VALVE AND STATIC VALVE HANDLE HAVE BEEN INSTALLED INCORRECTLY ON SOME ACFT. IF INSTALLED INCORRECTLY, THE VA
- [SDR CA121121007](https://openairdocs.org/sdr/CA121121007), Nov 19, 2012: BUSHING. MISMANUFACTURED. (CAN) THE VENDOR THAT SUPPLIES BUSHING, HAS NOTIFIED MFG THAT 2 BATCHES OF THE BUSHING WERE NOT HEAT TREATED TO THE FINAL HARDNESS SPECIFICATION AS REQUIRED IAW
- [SDR CA121122009](https://openairdocs.org/sdr/CA121122009), Nov 16, 2012: MODULE. MALFUNCTIONED. (CAN) WEATHER RADAR SYSTEM DISPLAYS: WX FAIL MESSAGE ON PILOTS PFD. REPLACED AGM MODULE NR 1 IN MODULAR AVIONICS UNIT.
- [SDR CA121114013](https://openairdocs.org/sdr/CA121114013), Nov 9, 2012: POWER LEVER. FOULED. (CAN) PRODUCTION NOTED THAT DURING RIGGING OF THE LT POWER LEVER THE STOP BOLT WAS CONTACTING THE ADJACENT STRUCTURE WHEN THE BOUNCE GAP OF 0.80, 0.120. REQUIRE

All 194: https://openairdocs.org/model/dehavilland-dhc-6/reports.md

## The same model under other registry codes

Amateur-built copies and renamed makers get their own codes.

- [Boeing DHC 6](https://openairdocs.org/model/boeing-dhc-6): 0 registered aircraft, registry code 1386000

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