# Douglas DC-6A - Type: Aircraft model (FAA registry) - Registry code: 3021706 - Manufacturer (registry): DOUGLAS - Model: DC-6A - Aircraft type: Fixed wing multi engine - Category: Airplane - Engines: 4 · Reciprocating - Seats: 96 - Weight class: 20,000 lb and over - Cruise speed: 216 mph - Certification: Type certificated - Data sheet: [TCDS 6A3](https://openairdocs.org/tcds/6A3) (OpenAirDocs) - Holder: The Boeing Company - Registered aircraft: 7 - Page: https://openairdocs.org/model/douglas-dc-6a 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 2026-13-02](https://openairdocs.org/ad/2026-13-02): Navigation · Airbus Canada Limited Partnership 18, 49-46, 80-A and 555 more. Effective Jul 1, 2026 - [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 2017-06-05](https://openairdocs.org/ad/2017-06-05): Wings · Boeing DC-6, DC-6A, DC-6B and 3 more. Effective May 1, 2017 - [AD 2011-12-01](https://openairdocs.org/ad/2011-12-01): Equipment/Furnishings · Airbus A300 B2-1A, A300 B2-1C, A300 B2-203 and 268 more. Effective Aug 1, 2011 - [AD 93-14-12](https://openairdocs.org/ad/93-14-12): Crewmember Protective Breathing Equipment Units · Airbus A300 B2-1A, A300 B2-1C, A300 B2-203 and 201 more. Effective Sep 2, 1993 - [AD 93-11-07](https://openairdocs.org/ad/93-11-07): Structural Integrity · Boeing DC-6, DC-6A, DC-6B and 3 more. Effective Jul 22, 1993 - [AD 89-11-07](https://openairdocs.org/ad/89-11-07): Main Landing Gear Fittings · Boeing DC-6, DC-6A, DC-6B and 6 more. Effective Jun 23, 1989 - [AD 88-04-01](https://openairdocs.org/ad/88-04-01): Vertical Stabilizer Spar Fittings · Boeing DC-6, DC-6A, DC-6B and 3 more. Effective Mar 21, 1988 - [AD 80-12-02 R1](https://openairdocs.org/ad/80-12-02-R1): Wing Fittings, Stringer, Skin Cracks · Boeing DC-6, DC-6A, DC-6B and 3 more. Effective Apr 21, 1987 - [AD 83-20-04](https://openairdocs.org/ad/83-20-04): Horizontal Stabilizer Rear Spar Caps · Boeing DC-6, DC-6A, DC-6B and 3 more. Effective Oct 19, 1983 - [AD 80-22-07](https://openairdocs.org/ad/80-22-07): Nose Gear Torque Link · Boeing DC-6, DC-6A, DC-6B and 3 more. Effective Nov 3, 1980 - [AD 67-13-02](https://openairdocs.org/ad/67-13-02): Operating Limitations · Boeing DC-6, DC-6A, DC-6B and 6 more. Effective Dec 1, 1978 - [AD 61-05-02](https://openairdocs.org/ad/61-05-02): Emergency Exit Door Hinges · Boeing DC-6, DC-6A and DC-6B. Effective Dec 1, 1978 - [AD 54-23-01](https://openairdocs.org/ad/54-23-01): Fuselage Skin · Boeing DC-6, DC-6A, DC-6B and 3 more. Effective Dec 1, 1978 - [AD 74-17-01](https://openairdocs.org/ad/74-17-01): Regulator · Boeing 707-100 Long Body, 707-100B Long Body, 707-100B Short Body and 78 more. Effective Sep 16, 1974 - [AD 65-09-02](https://openairdocs.org/ad/65-09-02): Main Gear Torque Links · Boeing DC-6, DC-6A and DC-6B. Effective May 21, 1965 - [AD 64-03-03](https://openairdocs.org/ad/64-03-03): Blades · Boeing DC-6, DC-6A, DC-6B and 26 more. Effective Mar 1, 1964 - [AD 63-20-03](https://openairdocs.org/ad/63-20-03): Lower Center Spar Caps · Boeing DC-6, DC-6A and DC-6B - [AD 62-25-02](https://openairdocs.org/ad/62-25-02): Main Landing Gear Shock Strut Cylinder · Boeing DC-6, DC-6A, DC-6B and 3 more - [AD 61-23-04](https://openairdocs.org/ad/61-23-04): Spar Caps · Boeing DC-6, DC-6A and DC-6B. Effective Dec 7, 1961 - [AD 61-08-01](https://openairdocs.org/ad/61-08-01): Fuel Transfer · Boeing DC-6, DC-6A, DC-6B and 3 more. Effective May 9, 1961 - [AD 61-04-02](https://openairdocs.org/ad/61-04-02): Spar Caps · Boeing DC-6, DC-6A and DC-6B. Effective Mar 14, 1961 - [AD 60-02-05](https://openairdocs.org/ad/60-02-05): Spar Cap · Boeing DC-6, DC-6A and DC-6B - [AD 53-05-01](https://openairdocs.org/ad/53-05-01): Propellers Slip Rings · Aero Spacelines 377, 377MG, 377SGT and 6 more - [AD 60-03-04](https://openairdocs.org/ad/60-03-04): Propeller Blades · Boeing DC-6, DC-6A, DC-6B and 1 more - [AD 59-13-06](https://openairdocs.org/ad/59-13-06): Lower Front Spar Cap · Boeing DC-6A and DC-6B - [AD 58-23-02](https://openairdocs.org/ad/58-23-02): Stabilizer Spar Fittings · Boeing DC-6, DC-6A and DC-6B - [AD 58-15-01](https://openairdocs.org/ad/58-15-01): Safety Belt Hook Assembly · Boeing DC-6, DC-6A, DC-6B and 3 more - [AD 58-11-01](https://openairdocs.org/ad/58-11-01): Nose Wheel Retract Link · Boeing DC-6, DC-6A, DC-6B and 3 more - [AD 56-13-01](https://openairdocs.org/ad/56-13-01): Wing Skin And Stringer Inspection · Boeing DC-6, DC-6A and DC-6B - [AD 55-18-02](https://openairdocs.org/ad/55-18-02): Propeller Reverse Protective Device · Boeing DC-6, DC-6A and DC-6B - [AD 55-15-04](https://openairdocs.org/ad/55-15-04): Propeller Feathering Lines · Boeing DC-6, DC-6A and DC-6B - [AD 55-11-01](https://openairdocs.org/ad/55-11-01): Nose Gear Yoke End Fitting · Boeing DC-6, DC-6A, DC-6B and 3 more - [AD 55-09-03](https://openairdocs.org/ad/55-09-03): Circuit Breaker · Boeing DC-6, DC-6A and DC-6B - [AD 54-06-01](https://openairdocs.org/ad/54-06-01): Kiddie CO2 Discharge Valve · Boeing DC-6, DC-6A and DC-6B - [AD 53-25-01](https://openairdocs.org/ad/53-25-01): Aileron Control System · Boeing DC-6, DC-6A and DC-6B - [AD 53-08-02](https://openairdocs.org/ad/53-08-02): Center Wing Skin And Stringers · Boeing DC-6, DC-6A and DC-6B - [AD 52-28-05](https://openairdocs.org/ad/52-28-05): Center Wing Lower Access Hole · Boeing DC-6, DC-6A and DC-6B - [AD 52-27-02](https://openairdocs.org/ad/52-27-02): Outboard Front Spar Splice Plate · Boeing DC-6, DC-6A and DC-6B - [AD 52-20-01](https://openairdocs.org/ad/52-20-01): Overvoltage Protection · Boeing DC-6, DC-6A and DC-6B - [AD 52-18-02](https://openairdocs.org/ad/52-18-02): Spar Cap Rework · Boeing DC-6, DC-6A and DC-6B - [AD 52-14-01](https://openairdocs.org/ad/52-14-01): Propeller Reversing Rework · Boeing DC-6, DC-6A and DC-6B - [AD 51-10-01](https://openairdocs.org/ad/51-10-01): Wing Flap Operating Link · Boeing DC-6, DC-6A and DC-6B - [AD 51-01-01](https://openairdocs.org/ad/51-01-01): Attachment Bolt Replacement · Boeing DC-6, DC-6A and DC-6B - [AD 50-52-01](https://openairdocs.org/ad/50-52-01): Blades · Boeing DC-6, DC-6A, DC-6B and 4 more - [AD 50-43-01](https://openairdocs.org/ad/50-43-01): Wheels · Boeing DC-6, DC-6A and DC-6B - [AD 50-23-02](https://openairdocs.org/ad/50-23-02): Nose Gear Yoke End Fitting · Boeing DC-6, DC-6A and DC-6B - [AD 50-18-02](https://openairdocs.org/ad/50-18-02): Engine Operation Placard · Boeing DC-6, DC-6A and DC-6B - [AD 50-16-01](https://openairdocs.org/ad/50-16-01): Propeller Reverse Mechanism · Boeing DC-6, DC-6A and DC-6B - [AD 49-46-01](https://openairdocs.org/ad/49-46-01): Vacuum System Fusible Plug · Boeing DC-4, DC-6, DC-6A and 1 more Historical (superseded or no longer in force): - [AD 74-08-09 R2](https://openairdocs.org/ad/74-08-09-R2) (historical): Waste Receptacles · Aero Spacelines 377, 377MG, 377SGT and 268 more. Effective Jul 29, 1996 All 81: https://openairdocs.org/model/douglas-dc-6a/ads.md ## Information bulletins (advisory) (1) - [SAIB NM-15-03](https://openairdocs.org/saib/NM-15-03): Flight Controls. Issued Nov 24, 2014 ## Registered aircraft (7) - [N3047V](https://openairdocs.org/aircraft/N3047V): [Tatonduk Outfitters Ltd](https://openairdocs.org/faa-owner/TATONDUK%20OUTFITTERS%20LTD), [Fairbanks, AK](https://openairdocs.org/faa-place/AK/Fairbanks), S/N 44658 - [N400UA](https://openairdocs.org/aircraft/N400UA): [Tatonduk Outfitters Ltd](https://openairdocs.org/faa-owner/TATONDUK%20OUTFITTERS%20LTD), [Fairbanks, AK](https://openairdocs.org/faa-place/AK/Fairbanks), built 1954, S/N 44258 - [N578AS](https://openairdocs.org/aircraft/N578AS): [Nighthawk Air Systems Inc](https://openairdocs.org/faa-owner/NIGHTHAWK%20AIR%20SYSTEMS%20INC), [Miami, FL](https://openairdocs.org/faa-place/FL/Miami), S/N 44650 - [N70BF](https://openairdocs.org/aircraft/N70BF): [Florida Air Transport Inc](https://openairdocs.org/faa-owner/FLORIDA%20AIR%20TRANSPORT%20INC), [Miami Lakes, FL](https://openairdocs.org/faa-place/FL/Miami%20Lakes), built 1953, S/N 43720 - [N7780B](https://openairdocs.org/aircraft/N7780B): [Everts Air Fuel Inc](https://openairdocs.org/faa-owner/EVERTS%20AIR%20FUEL%20INC), [Fairbanks, AK](https://openairdocs.org/faa-place/AK/Fairbanks), built 1957, S/N 45372 - [N851CE](https://openairdocs.org/aircraft/N851CE): [Everts Air Cargo](https://openairdocs.org/faa-owner/EVERTS%20AIR%20CARGO), [Fairbanks, AK](https://openairdocs.org/faa-place/AK/Fairbanks), S/N 45531 - [N9056R](https://openairdocs.org/aircraft/N9056R): [Tatonduk Outfitters Ltd](https://openairdocs.org/faa-owner/TATONDUK%20OUTFITTERS%20LTD), [Fairbanks, AK](https://openairdocs.org/faa-place/AK/Fairbanks), built 1958, S/N 45498 ## NTSB investigations (18) 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 FTW88FA136](https://openairdocs.org/ntsb/FTW88FA136), Jul 21, 1988: Douglas DC-6A (N33VX), Golden Meadow, LA, destroyed, 3 fatal - [NTSB ANC85FA118](https://openairdocs.org/ntsb/ANC85FA118), Jul 7, 1985: Douglas DC-6A (N2878F), Egegik, AK, destroyed - [NTSB LAX84LA272](https://openairdocs.org/ntsb/LAX84LA272), Apr 28, 1984: Douglas DC-6A (N92860), San Manuel, AZ, destroyed - [NTSB ANC83LA048](https://openairdocs.org/ntsb/ANC83LA048), Feb 25, 1983: Douglas DC-6A (N6587C), Nuiqsut, AK, substantial damage - [NTSB CHI81IA031](https://openairdocs.org/ntsb/CHI81IA031), Mar 5, 1981: Douglas DC-6A (N44DG), East Alton, IL, incident, minor damage - [NTSB ANC81FA015](https://openairdocs.org/ntsb/ANC81FA015), Jan 16, 1981: Douglas DC-6A (N1036F), Gambell, AK, substantial damage - [NTSB ANC80IA093](https://openairdocs.org/ntsb/ANC80IA093), Aug 26, 1980: Douglas DC-6 (N2878F), Dillingham, AK, incident, minor damage - [NTSB UNK78X0118](https://openairdocs.org/ntsb/UNK78X0118), May 5, 1978: Douglas DC-6A (N3493F), Zandery, NS, destroyed - [NTSB MIA74AM038](https://openairdocs.org/ntsb/MIA74AM038), Oct 25, 1973: Douglas DC-6B (N614SE), Miami, FL, destroyed - [NTSB OAK70OP012](https://openairdocs.org/ntsb/OAK70OP012), Mar 20, 1970: Douglas DC-6 (N90781), Oshima Isle, JA, no damage - [NTSB OAK68O0014](https://openairdocs.org/ntsb/OAK68O0014), Jan 11, 1968: Douglas DC-6A (N90782), Internatl Waters (Gulf of Mexico), minor damage - [NTSB FTW67A0078](https://openairdocs.org/ntsb/FTW67A0078), Jan 31, 1967: Douglas DC-6A (N640NA), San Antonio, TX, destroyed, 3 fatal - [NTSB NYC66A0022](https://openairdocs.org/ntsb/NYC66A0022), Aug 15, 1965: Douglas DC-6A (N37595), Boston, MA, substantial damage - [NTSB OAK66A0003](https://openairdocs.org/ntsb/OAK66A0003), Jul 17, 1965: Douglas DC-6 (N6575C), San Jose, CA, substantial damage - [NTSB DCA65A0006](https://openairdocs.org/ntsb/DCA65A0006), May 18, 1965: Douglas DC-6A (N6579C), Knob Noster, MO, destroyed - [NTSB SEA65A0053](https://openairdocs.org/ntsb/SEA65A0053), Apr 23, 1965: Douglas DC-6A (N6541C), Mt Rainier, WA, destroyed, 5 fatal - [NTSB UNK65X0111](https://openairdocs.org/ntsb/UNK65X0111), Oct 2, 1964: Douglas DC-6A (N6579C), San Bernadino, CA, incident, minor damage - [NTSB UNK64X1947](https://openairdocs.org/ntsb/UNK64X1947), May 25, 1964: Douglas DC-6A (N90777), Sacramento, CA, incident, minor damage ## FAA accident and incident reports (20) 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 20110922022389I](https://openairdocs.org/incident/20110922022389I), Sep 22, 2011: Douglas DC-6A (N6174C), King Salmon, AK, Minor damage. After a VOR approach to a missed approach we diverted to our scheduled alternate. At 1558Z, we got a zone 2 and 3 fire indication associated with a loud thump.… - [Incident 20080407833399I](https://openairdocs.org/incident/20080407833399I), Apr 7, 2008: Doug DC6A (N7780B), Kenai, AK, No damage. (-23) [privacy data omitted] on 4/7/2008, upon climbout from Kenai, AK airport, pilot noted loss of aileron control. Air returned and landed without further… - [Incident 20051213029989I](https://openairdocs.org/incident/20051213029989I), Dec 13, 2005: Doug DC6A (N400UA), Kotzebue, AK. (-23) After experiencing total hydraulic failure, the DC-6 crew was unable to maintain directional control and slid off the left side of runway 8 at the Ralph… - [Incident 19951222046199I](https://openairdocs.org/incident/19951222046199I), Dec 22, 1995: Doug DC6A (N1027N), Fairbanks, AK. Narrative: on December 22, 1995, a northern air cargo, inc., Douglas DC-6 aircraft N1027N, flight no. 60, departed Fairbanks International Airport (fai).… - [Incident 19900908038479I](https://openairdocs.org/incident/19900908038479I), Sep 8, 1990: Doug DC6A (N1027N), Kodiak, AK, Minor damage. Vibration on rollout. Nose gear was left of center. Torque links were disconnected. - [Incident 19900113008749I](https://openairdocs.org/incident/19900113008749I), Jan 13, 1990: Doug DC6A (N872TA), Matthew Town, Bahamas. NR2 engine backfiring at cruise. NR3 engine had same landing. Precautionary landing. Suspect cylinders on engine. - [Incident 19891113063579I](https://openairdocs.org/incident/19891113063579I), Nov 13, 1989: Doug DC6A (N616SE), Minneapolis, MN, Minor damage. NR4 ENGINE WARNING ON FINAL. FIRE IN NACELLE. PLAN CARBURETOR TEARDOWN and engine change. - [Incident 19890210008379I](https://openairdocs.org/incident/19890210008379I), Feb 10, 1989: Doug DC6A (N99330), Fairbanks, AK. Engine malfunction. Shut down. Returned. Found NR2 cylinder had cracked. Lost oil out of engine. - [Accident 19880720029169A](https://openairdocs.org/incident/19880720029169A), Jul 20, 1988: Doug DC6A (N33VX), Golden Meadow, LA, Destroyed, 3 fatal. Ran out of fuel short of destination. Hit a levee and broke up in canal. High blood alcohol level in PIC and copilot - [Incident 19851119063139I](https://openairdocs.org/incident/19851119063139I), Nov 19, 1985: Doug DC6A (N1027N), Mcgrath, AK. Fire in stack while crew attempted to get propeller out of reverse. Fire fed by oil from broken pushrod housing. - [Accident 19850706036779A](https://openairdocs.org/incident/19850706036779A), Jul 6, 1985: Doug DC6A (N2878F), Egegik, AK, Destroyed. During takeoff run on a beach,nose wheel struck a rut and aircraft swerved into a bluff. Fire destroyed the aircraft - [Accident 19840428073769A](https://openairdocs.org/incident/19840428073769A), Apr 28, 1984: Doug DC6A (N92860), San Manuel, AZ, Destroyed. Aircraft landed long, ran off end of runway. Three propellers did not reverse. Destroyed by fire. - [Accident 19830225013189A](https://openairdocs.org/incident/19830225013189A), Feb 25, 1983: Doug C118A (N6587C), Nuiqsut, AK, Substantial damage. Unable to stop on icy taxiway in high wind. Slid across runway into a ditch. Misjudged power application on ice. - [Incident 19810305010579I](https://openairdocs.org/incident/19810305010579I), Mar 5, 1981: Doug DC6A (N44DG), East Alton, IL, Minor damage. Engine fire was in engine accessory section. Engine had thrown a rod. - [Incident 19801018075139I](https://openairdocs.org/incident/19801018075139I), Oct 18, 1980: Doug DC6A (N616SE), St Louis, MO. Engine shut down due to drop in oil pressure, rise in oil temp. Pinion gear shaft broken, metal in the engine. - [Incident 19800826065589I](https://openairdocs.org/incident/19800826065589I), Aug 26, 1980: Doug DC6A (N2878F), Dillingham, AK, Minor damage. Nose gear retracted after touchdown. No mechanical found, pilot denied accidental retraction. - [Incident 19791109055349I](https://openairdocs.org/incident/19791109055349I), Nov 9, 1979: Doug DC6A (N44DG), New York, NY, Minor damage. Nose gear collapsed during start up from unknown cause. Radome destroyed, props, nose gear doors, #3 engine damaged - [Incident 19791105054809I](https://openairdocs.org/incident/19791105054809I), Nov 5, 1979: Doug DC6A (N44DG), East Boston, MA. Takeoff rejected due to smoke warning in cargo compartment. False alarm, due to a loose canon plug. - [Incident 19780711043199I](https://openairdocs.org/incident/19780711043199I), Jul 11, 1978: Doug DC6A (N45001), Buffalo, NY. Pilot shut one engine down just after takeoff due to blown cylinder. - [Incident 19780217007289I](https://openairdocs.org/incident/19780217007289I), Feb 17, 1978: Doug DC6 (N630NA), Ypsilanti, MI, Minor damage. Pilot struck the tail of another aircraft during taxi. ## Service difficulty reports (330, newest 50) As reported by operators and repair stations, by the model named in the report. - [SDR FXGA2026FA0000411](https://openairdocs.org/sdr/FXGA2026FA0000411), May 19, 2026: SKIN. CORRODED. CORROSION WAS NOTED ON FUSELAGE PLATING @ L/H OVERWING EMERGENCY EXIT DOOR FRAME, LOWER AFT CORNER. REPAIRED PER EO 2608 - [SDR FXGA2026FA0000410](https://openairdocs.org/sdr/FXGA2026FA0000410), May 19, 2026: FLANGE. CRACKED. CRACK INDICATION NR 3 TANK 182C FLANGE, REPAIRED PER EO 2609 - [SDR FXGA2026FA0000409](https://openairdocs.org/sdr/FXGA2026FA0000409), May 19, 2026: DOUBLER. CORRODED. R/H SPAR NEEDS REPAIR DOUBLER AT STA 167 REPLACED DUE TO CORROSION AT MAX LIMIT. - [SDR FXGA202212232233](https://openairdocs.org/sdr/FXGA202212232233), Dec 23, 2022: NONE. NONE. CRACKED TANG ON FRONT SPAR UPPER CAP. TO REPAIR A CRACKED TANG ON THE FORWARD EDGE OF THE FRONT SPAR UPPER CAP. USE THIS EO IN CONJUNCTION WITH STS EA 81-2022-1 - [SDR FXGA202110072132](https://openairdocs.org/sdr/FXGA202110072132), Oct 7, 2021: SKIN. CRACKED. CRACKED R/H HORIZONTAL STABILIZER LEADING EDGE AT STATION 109. TO REPAIR A CRACK LEADING EDGE SKIN ON THE R/H HORIZONTAL STABILIZER AT STATION 109. STOP DRILL C - [SDR FXGA20200813001](https://openairdocs.org/sdr/FXGA20200813001), Aug 12, 2020: LINE. LEAKING. DURING APPROACH, HYDRAULIC PRESSURE AND QUANTITY WENT TO ZERO. DIVERTED. MAINTENANCE FOUND THE NR 3 ENGINE DRIVEN HYD PUMP HYDRALIC PRESSURE LINE LEAKING FROM H - [SDR FXGA201909261976](https://openairdocs.org/sdr/FXGA201909261976), Sep 26, 2019: ANGLE. BENT. FORWARD PRESSURE BULKHEAD BEAM REPAIR. TO REPAIR A BENT ANGLE ON THE FORWARD PRESSURE BULKHEAD, ON THE WHEEL WELL SIDE. AT F/STA 0. REPAIR RT END OF LOWER HORIZ - [SDR FXGA201908281969](https://openairdocs.org/sdr/FXGA201908281969), Aug 28, 2019: FITTING. CORRODED. REPLACEMENT OF CORRODED FITTING AT STRINGER 17 W/STA 60L OUTBOARD. TO REPLACE CORRODED FITTINGS ON STRINGER 17L, OUTBOARD OF W/STA 60L. ON WING STRINGER 20L, RE - [SDR FXGA201908281970](https://openairdocs.org/sdr/FXGA201908281970), Aug 28, 2019: TEE FITTING. CORRODED. REPLACEMENT OF TEE ANGLE AT L/H OUTER WING AT W/STA 421. AFTER REMOVAL OF THE L/H OUTER WING THE CENTER SPAR TEE ANGLE (W/STA 421) WAS FOUND CORRODED. ON L/H OU - [SDR FXGA2019082820191](https://openairdocs.org/sdr/FXGA2019082820191), Aug 28, 2019: TEE FITTING. CORRODED. REPLACEMENT OF TEE ANGLE AT L/H OUTER WING AT W/STA 421. AFTER REMOVAL OF THE L/H OUTER WING THE CENTER SPAR TEE ANGLE (W/STA 421) WAS FOUND CORRODED. ON L/H OU - [SDR FXGA201908261967](https://openairdocs.org/sdr/FXGA201908261967), Aug 26, 2019: SKIN. CRACKED. MULTIPLE WING SKIN CRACKS AT W/STA 168R BETWEEN STRINGERS 6 AND 11. MULTIPLE SMALL CRACKS WERE FOUND ON THE UPPER WING SKIN IN THE HELL HOLE AREA AROUND W/STA 1 - [SDR FXGA201908161966](https://openairdocs.org/sdr/FXGA201908161966), Aug 16, 2019: SKIN. CORRODED. FUSELAGE SKIN CORRODED AT LOWER EDGE OF MAIN CARGO DOOR. TO REPAIR CORRODED FUSELAGE SKIN AT LOWER EDGE OF MAIN CARGO DOOR BETWEEN F/STA 768 AND 790. CUT-OUT DA - [SDR FXGA2019081261963](https://openairdocs.org/sdr/FXGA2019081261963), Aug 6, 2019: STRINGER. CRACKED. NR 4 NACELLE STRINGER AND SKIN SPLICE. TO SPLICE NR 4 NACELLE STRINGERS NR 1 AT STATION 436 AND STRINGER 32 AT STATION 432.5. THE NACELLE SKIN WILL BE SPLICED A - [SDR FXGA201908061964](https://openairdocs.org/sdr/FXGA201908061964), Aug 6, 2019: STRINGER SPLICE. CORRODED. FUSELAGE STRINGER SPLICES ON STRINGER 32L BETWEEN F/STA 625 AND 638, STRINGER REPAIRED IAW A&B OVERHAUL MANUAL FIGURE 12-2. - [SDR FXGA201908051958](https://openairdocs.org/sdr/FXGA201908051958), Jul 25, 2019: SPAR WEB. CORRODED. CORRODED REAR SPAR WEB AT W/STA 359L. TO REPAIR A CORRODED REAR SPAR WEB AT W/STA 359L. CUT OUT CORRODED AREA AND REPAIR PER DC-6 A&B OVERHAUL MANUAL FIGURE 13- - [SDR FXGA2019080521957](https://openairdocs.org/sdr/FXGA2019080521957), Jul 25, 2019: SPAR. CRACKED. CRACKED OUTER WING CENTER SPAR WEB AT W/STA 435L. TO REPAIR A CRACKED OUTER WING CENTER SPAR WEB AT W/STA 435L. PERFORM OUTER WING CENTER SPAR WEB REPAIR PER DC - [SDR FXGA2019080541956](https://openairdocs.org/sdr/FXGA2019080541956), Jul 24, 2019: SKIN. CORRODED. FUSELAGE SKIN REPLACEMENT AND STRINGER REPAIRS BEHIND CABIN HEATER EXHAUST. TO REPLACE A CORRODED FUSELAGE SKIN FROM F/STA 596 TO 662; REPAIR CORRODED STRINGER - [SDR FXGA2019080591954](https://openairdocs.org/sdr/FXGA2019080591954), Jul 19, 2019: SKIN. CORRODED. FUSELAGE SKIN CORRODED AT F/STA 801 STRINGER 8L. TO REPAIR CORRODED FUSELAGE SKIN LAP AFT OF THE MAIN CARGO DOOR AT F/STA 801 STRINGER 8L. CUT-OUT DAMAGE AND RE - [SDR FXGA2019080710001](https://openairdocs.org/sdr/FXGA2019080710001), Jul 10, 2019: LANDING GEAR. MALFUNCTIONED. DIVERTED AFTER MULTIPLE GEAR DOWN ATTEMPTS WITH NO DOWN AND LOCKED INDICATION ON RIGHT MAIN. AT FAI THERE WAS NO DOWN AND LOCKED INDICATION ON RITGHT MAIN UNTIL - [SDR FXGA201907091953](https://openairdocs.org/sdr/FXGA201907091953), Jul 9, 2019: SKIN. CORRODED. FUSELAGE SKIN CORRODED ABOVE FORWARD BAG PIT DOOR. TO REPAIR CORRODED FUSELAGE SKIN ABOVE FORWARD BAG PIT DOOR, AT F/STA 162 BETWEEN STRINGER 23R & 24R. CUT-OUT - [SDR FXGA201906281950](https://openairdocs.org/sdr/FXGA201906281950), Jun 28, 2019: RIB. CRACKED. LEADING EDGE RIB CAP REPAIR AT W/STA 184R. TO REPAIR A CRACKED LEADING EDGE RIB TEE CAP AT W/STA 184R. CUT CRACKED TEE CAP ANGLE IN A SUITABLE LOCATION FORWARD - [SDR FXGA201909051942](https://openairdocs.org/sdr/FXGA201909051942), May 17, 2019: SKIN. CORRODED. CORRODED FUSELAGE SKIN REPAIRS AROUND MULTIPLE CABIN WINDOWS. TO REPAIR CORRODED FUSELAGE SKIN AROUND CABIN WINDOWS AT THE FOLLOWING LOCATIONS: F/STA 285 LEFT S - [SDR FXGA201905171943](https://openairdocs.org/sdr/FXGA201905171943), May 17, 2019: DOUBLER. CRACKED. NR 2 ALT ACCESS DOOR DOUBLER REPLACEMENT. TO REPLACE A CRACKED ACCESS DOOR DOUBLER AT NR 2 ATLERNATE TANK. REMOVE AND REPLACE NR 2 ALTERNATE TANK ACCESS DOOR DO - [SDR FXGA201905141940](https://openairdocs.org/sdr/FXGA201905141940), May 14, 2019: SKIN. CORRODED. CORRODED FUSELAGE SKIN AT F/STA 150 STRINGER 33L. CORROSION WAS FOUND 2 INCHES FORWARD OF AN EXISTING REPAIR MADE PER OVERHAUL MANUAL FIGURE 12-22. REMOVE EXIST - [SDR FXGA201908051955](https://openairdocs.org/sdr/FXGA201908051955), May 8, 2019: FITTING. CORRODED. REPLACEMENT OF CORRODED FITTING AT STRINGER 20 W/STA 60L OUTBOARD. TO REPLACE CORRODED FITTINGS ON STRINGER 20L, OUTBOARD OF W/STA 60L. ON WING STRINGER 20L, RE - [SDR FXGA201905081937](https://openairdocs.org/sdr/FXGA201905081937), May 8, 2019: FITTING. CORRODED. REPLACEMENT OF CORRODED FITTING AT W/STA 60L STRINGER 21L. TO REPLACE CORRODED FITTINGS ON STRINGER 21L, INBOARD AND OUTBOARD OF W/STA 60L. ON WING STRINGER 21L - [SDR FXGA2019062681938](https://openairdocs.org/sdr/FXGA2019062681938), May 8, 2019: FITTING. CORRODED. REPLACEMENT OF CORRODED FITTING AT W/STA 60R STRINGER 21. TO REPLACE CORRODED FITTING INBOARD AND OUTBOARD OF W/STA 60R. REMOVE INBOARD AND OUTBOARD RIGHT HAND - [SDR FXGA201807311816](https://openairdocs.org/sdr/FXGA201807311816), Jul 31, 2018: SKIN. CHAFED. CHAFED SKIN ON RT FLAP UPPER SKIN AT W/STA 370R. THE RIGHT HAND FLAP UPPER SKIN WAS FOUND CHAFED ON THE LEADING EDGE SECTION AT W/STA 370R. REMOVE DAMAGE IN A R - [SDR FXGA201712050001](https://openairdocs.org/sdr/FXGA201712050001), Nov 28, 2017: WARNING SYSTEM. ACTIVATED. UNSAFE LEFT MAIN GEAR INDICATION AFTER CYCLING SEVERAL TIMES FINALLY GOT DOWN & LOCKED SAFE INDICATION. - [SDR FXGA201708031715](https://openairdocs.org/sdr/FXGA201708031715), Aug 2, 2017: SKIN. CRACKED. CRACKED SKIN AT STATION 239 AND STRINGER 33 1/2. REPAIR TO SKIN CRACK AT STATION 239. INSTALL REPAIR IN ACCORDANCE WITH DC6 OVERHAUL MANUAL FIGURE 12-21 AND 12- - [SDR 2017F00172](https://openairdocs.org/sdr/2017F00172), Jul 19, 2017: LINE. CRACKED. COMPLETE HYDRAULIC SYSTEM FAILURE, EMERGENCY LANDING PROCEDURES FOLLOWED. REPLACED HYDRAULIC PRESSURE LINE NR 2. FOUND CRACK AT B-NUT. REPLACED THE LINE. PREFOR - [SDR FXGA2016080916162](https://openairdocs.org/sdr/FXGA2016080916162), Aug 9, 2016: STRINGER. CORRODED. CORRODED STRINGER 12L AT BS 1049. REPAIRED THE STRINGER IAW A&B OVERHAUL MANUAL FIGURE 12-2. - [SDR FXGA201607181618](https://openairdocs.org/sdr/FXGA201607181618), Jul 18, 2016: SKIN. DAMAGED. FUSELAGE SKIN AND STRINGER REPAIR AT BS 341, STRINGER 27L. TO REPAIR THE CORRODED SKIN AND STRINGER 27L AT BS 341. CUT-OUT OF THE CORRODED SKIN AND REPAIR PER A - [SDR FXGA201607191616](https://openairdocs.org/sdr/FXGA201607191616), Jul 11, 2016: SKIN. DAMAGED. SKIN CORROSION AND HOLE IN SKIN AFT OF LOWER CORNER OF AFT BELLY DOOR BETWEEN STRINGERS 30 AND 31R. REPAIRED THE SKIN. REMOVE DAMAGE & PREFORM REPAIR IAW OVERHA - [SDR FXGA201511111542](https://openairdocs.org/sdr/FXGA201511111542), Nov 11, 2015: BULKHEAD. DAMAGED. HOLE IN BULKHEAD AT FS 341 ABOVE STRINGER 32R. REPAIRED DAMAGED BULKHEAD IAW DC-6A & B OVERHAUL MANUAL FIGURE 12 - 6. - [SDR FXGA201510281541](https://openairdocs.org/sdr/FXGA201510281541), Nov 10, 2015: FLOOR SKIN. CORRODED. CORRODED FLOOR SKIN BETWEEN FS 520 & 540. REPAIRED CORRODED SKIN IAW DC-6 A & B OVERHAUL MANUAL FIGURE 12-15. - [SDR FXGA201510291540](https://openairdocs.org/sdr/FXGA201510291540), Oct 28, 2015: FLOOR SKIN. CORRODED. CORRODED FLOOR SKIN, BETWEEN FS 866 & 902, AROUND RBL 10. REPAIR CORRODED SKIN IAW DC-6 A & B, OVERHAUL MANUAL FIG 12-16. - [SDR FXGA201503151512](https://openairdocs.org/sdr/FXGA201503151512), Mar 23, 2015: SKIN. CHAFED. CHAFED WING SKIN AT WS 297R, STRINGER 26R. TO REPAIR CHAFING, CAUSED BY A FAIRING, BEAVER TAIL, RUBBING AGAINST THE LOWER WING SKIN AT WS 297R, STRINGER 26R. CU - [SDR FXGA20150323001](https://openairdocs.org/sdr/FXGA20150323001), Mar 23, 2015: STRINGER. CORRODED. REPAIR OF CORRODED FUSELAGE STRINGER FS 541, STRINGER 33L. CUT DAMAGED STRINGER. REMOVE CORRODED SECTION & INSTALLED NEW STRINGER SECTION & SPLICES IAW DC6 A & - [SDR FXGA201411051445](https://openairdocs.org/sdr/FXGA201411051445), Nov 5, 2014: AILERON. DAMAGED. REPAIR TO AILERON PN 5488155-7, SN 629 BECAUSE OF DAMAGE TO TIP FROM APPROX STATION 679.0" OTBD. REPAIR IAW DC-6 A B OVERHAUL MANUAL. AILERON TO BE REBALANCED A - [SDR FXGA20141104001](https://openairdocs.org/sdr/FXGA20141104001), Oct 31, 2014: UNKNOWN. LEAKING. HYDRAULIC FAILURE, LOSS OF PRESS & QTY EXPERIENCED WHILE TURNING ONTO RUNWAY 33. - [SDR FXGA201408141429](https://openairdocs.org/sdr/FXGA201408141429), Aug 13, 2014: SKIN. CRACKED. REPAIR CRACK IN THE UPPER WING SKIN AT WSTA 111 STRINGER 10R. STOP DRILL CRACK & INSTALL AN EXTERNAL DOUBLER MADE FROM 7075-T6 0.080 IAW DWG 1429-01 & DC-6 A & - [SDR FXGA201408121428](https://openairdocs.org/sdr/FXGA201408121428), Aug 12, 2014: FRAME. CRACKED. FRAME CRACK AT FS 29.5L. THE LT FRAME RAIL LOCATED AT FS 29.5L CRACKED JUST ABOVE THE FWD HINGE POINT OF LT NLG DOOR. A NEW SECTION OF FRAME WILL BE SPLICED IN - [SDR FXGA20140808001](https://openairdocs.org/sdr/FXGA20140808001), Aug 8, 2014: HYDRAULIC LINE. LOOSE. HYDRAULIC FAILURE ON DECENT, EMER DECLARED & 0 DEGREE FLAP LANDING PERFORMED. - [SDR FXGA201404071421](https://openairdocs.org/sdr/FXGA201404071421), Apr 7, 2014: SKIN. DAMAGED. FLAP SKINS REPLACEMENT BETWEEN STATION 64 & 148. REPLACE PUNCTURED & DENTED LOWER FLAP SKINS LOCATED BEHIND THE RT MLG. REMOVE DAMAGED LOWER SKINS BETWEEN STATI - [SDR FXGA201404071420](https://openairdocs.org/sdr/FXGA201404071420), Apr 7, 2014: DOUBLER. CRACKED. CABIN HEATER EXHAUST SKIN REPAIR CRACKS WERE FOUND ON THE CABIN HEATER EXHAUST STAINLESS STEEL DOUBLER SHIELD. STOP DRILL CRACKS WITH A 5/32 INCHES DRILL MINIMU - [SDR FXGA2014010901](https://openairdocs.org/sdr/FXGA2014010901), Jan 9, 2014: STRUCTURE. CORRODED. CORROSION FOUND ON FRONT SPAR OF LT REAR HYD COMPARTMENT APPROXIMATELY STATION 412 FROM STRINGERS 26 -30. REPLACED STRINGER 25L FROM SPLICE AT STATION 341 TO IT - [SDR FXGA20131206001](https://openairdocs.org/sdr/FXGA20131206001), Nov 27, 2013: UNKNOWN. LEAKING. A FUEL LEAK WAS DISCOVERED ON THE OTBD SIDE OF THE NR 3 NACELLE. THE FUEL LEAK WAS SUSPECTED TO BE FROM LOOSE RIVETS & BAD SEALANT. THE DOUBLER WAS REMOVED, THE - [SDR FXGA201305131344](https://openairdocs.org/sdr/FXGA201305131344), May 13, 2013: SKIN. CORRODED. CORROSION ON WING SKIN BETWEEN LWS 167 & WS 216. REPAIRED IAW EO 1344. - [SDR FXGA201304221321](https://openairdocs.org/sdr/FXGA201304221321), Apr 22, 2013: SPAR CAP. CORRODED. CORROSION ON LOWER CTR SPAR CAP AT RWS 177, REMOVED CORROSION. PERFORMED VISUAL & HFEC INSPECTIONS, NO CORROSION DETECTED. FOUND WITHIN LIMITS IAW TO 1C-118A-3- All 330: https://openairdocs.org/model/douglas-dc-6a/reports.md ## STCs that may be installed (OpenAirDocs) (68, 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 SA2622NM](https://openairdocs.org/stc/SA2622NM): Installation of Precise Flight Pulselite Control Unit in landing/taxi system. (767-200 B17) (DHC-8 101). Precise Flight Inc - [STC ST02962AT](https://openairdocs.org/stc/ST02962AT): Installation of L3 Communications Traffic Alert and Collision Avoidance System Model 791A (TCAS791A). Woven Electronics, LLC - [STC SA863EA](https://openairdocs.org/stc/SA863EA): Incorporation of DME Corporation emergency evacuation slide lighting system. Astronics Luminescent Systems Inc. Lists DC-6 Series - [STC ST02580AT](https://openairdocs.org/stc/ST02580AT): Lithium cell battery pack to replace currently approved alkaline battery pack used in escape slide emergency light system. Astronics Luminescent Systems Inc - [STC SA02268CH](https://openairdocs.org/stc/SA02268CH): Installation of Airwolf Filter Corp. Air Oil Separator. Airwolf Filter Corporation - [STC SA01282NY](https://openairdocs.org/stc/SA01282NY): Installation of Airwolf remote mounted engine oil filter kit AFC-K015 on aircraft powered by Pratt & Whitney radial reciprocating engine Series R-985, R-1340 and R-1830. Airwolf Filter Corporation - [STC ST02965AT](https://openairdocs.org/stc/ST02965AT): Installation of Collins PN101 Compass System. B/E Aerospace Inc - [STC ST02963AT](https://openairdocs.org/stc/ST02963AT): Installation of Collins ALT-55B Radio Altimeter System. B/E Aerospace Inc - [STC ST334CH](https://openairdocs.org/stc/ST334CH): Installation of Superflite 102 fabric. Aviation Products Systems Inc - [STC SA1311WE](https://openairdocs.org/stc/SA1311WE): Installation of a United Data Control P/N V557 Voice Recorder in Boeing DC-6, DC-6A, DC-6B aircraft. United Airlines Inc - [STC ST02275AK](https://openairdocs.org/stc/ST02275AK): Approval for Douglas DC-6A and DC-6B aircraft operations on runways with slopes in excess of 2% gradient up to 6% gradient. Everts Air Cargo - [STC ST981SO](https://openairdocs.org/stc/ST981SO): Deactivation of the cabin pressurization system, conversion of the cargo compartment to a class 'E' compartment, and modification of the ventilation system. Everts Air Cargo - [STC SA363SO](https://openairdocs.org/stc/SA363SO): Cockpit voice recorder. Delta Airlines Inc. Lists DC-6 Series - [STC SA8075SW](https://openairdocs.org/stc/SA8075SW): Installation of fiberglass covering. (M-62 SERIES PT-19) (G-73 SCHWEIZER). Razorback Fabrics Inc - [STC SA1008WE](https://openairdocs.org/stc/SA1008WE): Installation of Poly-Fiber covering material. Poly-Fiber Inc - [STC SA1367GL](https://openairdocs.org/stc/SA1367GL): Surrendered and incorporated into STC ST334CH. Cooper Aviation Supply Company, Inc - [STC ST01608CH](https://openairdocs.org/stc/ST01608CH): Installation of brake assemblies, p/n 9560164-2 or 9560166, with non-asbestos linings, p/ns 5013028 and 5013029. Aircraft Braking Systems Corporation - [STC SA02168AK](https://openairdocs.org/stc/SA02168AK): Installation of hourmeter airspeed switch. For unpressurized aircraft only. Pressurized aircraft must have pressurization system deactivated. Avalaska Inc - [STC ST02166AK](https://openairdocs.org/stc/ST02166AK): Installation of UPS Aviation Technologies, Inc., GX50/60 GPS Navigator, Capstone configured MX20 Multi-Function display, and UAT transceiver. Northern Air Cargo Inc - [STC SA1753WE](https://openairdocs.org/stc/SA1753WE): Installation of VIP core assembly P/N VIP-106-18. Vibration Isolation Products Corp - [STC SA4-525](https://openairdocs.org/stc/SA4-525): Installation of VIP P/N 106-1J engine mount core. Vibration Isolation Products Corp - [STC SA1351WE](https://openairdocs.org/stc/SA1351WE): Replace existing fabric on wings, fuselage, empennage, and/or control surfaces, with Ceconite101 material. (262A Series -12). Ceconite Inc - [STC SA1479WE](https://openairdocs.org/stc/SA1479WE): Installation of a Benson portable buffet at fuselage station 141.375. Evergreen Air Center Inc - [STC SA1769NM](https://openairdocs.org/stc/SA1769NM): Installation of Bulk Liquid Cargo Tanks. Sorm Inc - [STC SA722AL](https://openairdocs.org/stc/SA722AL): Revised limitations to permit operation when takeoff warning system has not been installed. Ball Brothers, Inc - [STC SA1033NW](https://openairdocs.org/stc/SA1033NW): Installation of a bulk liquid cargo tank system. Flight Structures Inc - [STC SA4198WE](https://openairdocs.org/stc/SA4198WE): Forward and rear cargo door latch assembly, P/N TAS-3361150, and fitting installation, P/N TAS05359955-8002. Time Avn Services, Inc - [STC SA1506CE](https://openairdocs.org/stc/SA1506CE): Engine driven cabin air compressors and associated cabin pressurization controls removed. Petroleum Air Transport, Inc - [STC SA1083SO](https://openairdocs.org/stc/SA1083SO): Installation of four Pratt & Whitney R-2800-99W engines and Hamilton Standard propellers. Bellomy-Lawson Aviation Inc - [STC SA1066SO](https://openairdocs.org/stc/SA1066SO): Alternate installation of hydraulic pump utilizing existing engine drive. Bellomy-Lawson Aviation Inc - [STC SA770SO](https://openairdocs.org/stc/SA770SO): Installation of cargo pallet and container loading and restraint system. Aeronautical Engineers, Inc - [STC ST484SO](https://openairdocs.org/stc/ST484SO): Installation of cargo restraining bulkhead. Aeronautical Engineers, Inc - [STC ST964SO](https://openairdocs.org/stc/ST964SO): Installation of cargo interior, installation of cargo restraint and modification of pressurization system. Bellomy-Lawson Aviation Inc - [STC SA326NW](https://openairdocs.org/stc/SA326NW): Installation of a bulk liquid cargo tank system. Pacific Alaska Airlines Inc - [STC ST974SO](https://openairdocs.org/stc/ST974SO): Installation of extra crew seating and air distribution system. Bellomy-Lawson Aviation Inc - [STC SA1744WE](https://openairdocs.org/stc/SA1744WE): Installation of oil filter assemblies. Nelson Filter - [STC ST528SO](https://openairdocs.org/stc/ST528SO): Installation of cargo restraining bulkhead. Bellomy-Lawson Aviation Inc. Lists DC-6 Series - [STC ST34GL](https://openairdocs.org/stc/ST34GL): Remove cabin pressurization system, modify cabin air heating and ventilating system. Zantop Intn'l Airlines, Inc - [STC ST671SO](https://openairdocs.org/stc/ST671SO): Installation of cargo loading/ restraint system for palletized cargo. Jet Avion Corp - [STC SA1363WE](https://openairdocs.org/stc/SA1363WE): Installation of Fairchild Industrial Products Model A100 cockpit voice recorder system. Saturn Airways, Inc - [STC SA470CE](https://openairdocs.org/stc/SA470CE): Installation of Fairchild cockpit voice recorder Model A-100. Universal Airlines, Inc - [STC SA1-580](https://openairdocs.org/stc/SA1-580): Television broadcasting equipment. Midwest Program on Airborne Television Instruction. Lists DC-6 Series - [STC SA1082WE](https://openairdocs.org/stc/SA1082WE): Interior arrangements. AiResearch Aivation Service Co. Lists DC-6 Series - [STC SA1148WE](https://openairdocs.org/stc/SA1148WE): Interior modifications. Jay- Dee Aircraft Supply Co. Lists DC-6 Series - [STC SA12SO](https://openairdocs.org/stc/SA12SO): Altimeter vibrators. Pan American World Airways Inc. Lists DC-6 Series - [STC SA1302WE](https://openairdocs.org/stc/SA1302WE): Fairchild A100 voice recorder. Western Airlines Inc. Lists DC-6 Series - [STC SA1313WE](https://openairdocs.org/stc/SA1313WE): Fairchild A100 voice recorder. World Air Center. Lists DC-6 Series - [STC SA1517WE](https://openairdocs.org/stc/SA1517WE): Interior arrangement for 97 occupants, DME installation, interior emergency lighting installation. Mercer Enterprises. Lists DC-6 Series - [STC SA229SO](https://openairdocs.org/stc/SA229SO): B-400 oil separator. Air Carrier Eng Service Inc. Lists DC-6 Series - [STC SA4-1169](https://openairdocs.org/stc/SA4-1169): Interior modifications. AiResearch Aivation Service Co. Lists DC-6 Series All 68: https://openairdocs.org/model/douglas-dc-6a/stcs.md ## The same model under other registry codes Amateur-built copies and renamed makers get their own codes. - [Cessna DC-6A](https://openairdocs.org/model/cessna-dc-6a): 1 registered aircraft, registry code 2070402 --- 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.