# N43872: Douglas DC-6

- Status: Valid registration
- Airframe: [Douglas DC-6](https://openairdocs.org/model/douglas-dc-6) (registry code 3021702, 96 seats)
- Data sheets: [TCDS A-781](https://openairdocs.org/tcds/A-781) (The Boeing Company) (OpenAirDocs)
- Serial number: 53-3294
- Type: Fixed wing multi engine
- Engine type: Reciprocating
- Airworthiness: Standard, transport
- Airworthiness date: March 4, 1980
- Certificate issued: May 8, 2021
- Expires: May 31, 2028
- Mode S code: A5443E
- Registered owner: [Alaska Aviation Museum](https://openairdocs.org/faa-owner/ALASKA%20AVIATION%20MUSEUM)
- Location: [Anchorage, AK](https://openairdocs.org/faa-place/AK/Anchorage)
- Owner type: Corporation
- Owner's area on the map: 61.1637° N, 149.9966° W: Placed by OpenAirDocs at the center of ZIP code 99502, within about 2 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=43872
- Page: https://openairdocs.org/aircraft/N43872

From the FAA registry file of October 24, 2026. ADs below are matched by the registry's airframe and engine model codes. They may apply; each AD's applicability can narrow it by serial number, part number or installed equipment. This is not a compliance determination.

## ADs that may apply (OpenAirDocs): 79 in force

### Matched by airframe (Douglas DC-6)

- [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 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
- [AD 49-33-01](https://openairdocs.org/ad/49-33-01): Hamilton Standard Propeller Blades · Boeing DC-6, DC-6A and DC-6B

### 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 80: https://openairdocs.org/aircraft/N43872/ads.md

## Information bulletins (advisory) (1 in force)

- [SAIB NM-15-03](https://openairdocs.org/saib/NM-15-03): Flight Controls. Issued Nov 24, 2014

## NTSB investigations

None matched to N43872.

## FAA accident and incident reports

None matched to N43872.

## Service difficulty reports (60, newest 50)

As reported by operators and repair stations. Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model.

- [SDR NACA20070017](https://openairdocs.org/sdr/NACA20070017), Aug 22, 2007: SPARK PLUG. FAILED. NR 4 ENGINE SHUT DOWN DUE TO CONTINUOUS BACKFIRE IN CLIMB. INSPECTION REVEALED NO CRACKED CYLINDERS, FRONT CAM NO DEFECT. COMPRESSION TEST OF NR 12 CYLINDER CHE
- [SDR NACA20070005](https://openairdocs.org/sdr/NACA20070005), Feb 10, 2007: CYLINDER. BURNED. NR 4 ENGINE SHUT DOWN DUE TO NR 18 CYLINDER FAILURE. REMOVED AND REPLACED NR 18 CYLINDER DUE TO BURN THROUGH ON SIDE OF CYLINDER, REF: DC-6MM SECT V PG 16 AND 1
- [SDR NACA20070004](https://openairdocs.org/sdr/NACA20070004), Feb 7, 2007: CYLINDER. CRACKED. NR 1 ENGINE WOULD NOT TAKE A LEAN IN CRUISE FLIGHT. PERFORMED PRECAUTIONARY SHUTDOWN. REMOVED AND REPLACED NR 16 CYLINDER DUE TO CRACKED HEAD, REF: NAC DC-6MM S
- [SDR NACA20070003](https://openairdocs.org/sdr/NACA20070003), Jan 31, 2007: VALVE. FAILED. NR 1 ENGINE BACKFIRED AND WOULD NOT HOLD A LEAN. ANALYZER PATTERN FOR NR 8 CYLINDER FRONT AND REAR ABNORMAL, SHOWS LOW COMPRESSION. ENGINE SHUT DOWN. NR 8 CYLIN
- [SDR NACA20070001](https://openairdocs.org/sdr/NACA20070001), Jan 5, 2007: DISTRIBUTOR. SHORTED. NR 2 ENGINE BACK FIRING, SUSPECT NR 11 CYLINDER REARS. ENGINE WAS UNABLE TO TAKE LEANING. FOUND PART OF A BROKEN BRUSH WEDGED BETWEEN INNER AND OUTER SEGMENT PL
- [SDR NACA20060047](https://openairdocs.org/sdr/NACA20060047), Aug 23, 2006: ENGINE. FAILED. NR 3 ENGINE SHUTDOWN DUE TO RAPID OIL LOSS DURING CLIMB. REPLACED ENGINE DUE TO INTERNAL FAILURE, REF: NAC DC-6MM SEC. V. PG. 1-9.
- [SDR NACA20060037](https://openairdocs.org/sdr/NACA20060037), Jun 1, 2006: CYLINDER. CRACKED. NR 2 ENGINE SHUT DOWN DUE TO LOW COMPRESSION INDICATION ON NR 2 CYLINDER. REPLACED NR 2 CYLINDER DUE TO CRACKED HEAD.
- [SDR NACA20050029](https://openairdocs.org/sdr/NACA20050029), Nov 11, 2005: CYLINDER. CRACKED. NR 2 ENGINE SHUT DOWN DUE TO RUNNING ROUGH AND WILL NOT TAKE A LEAN. FOUND NR 2 ENGINE NR 1 CYLINDER WITH CRACKED HEAD. REPLACED NR 1 CYLINDER IAW DC-6MM SECTIO
- [SDR NACA20050025](https://openairdocs.org/sdr/NACA20050025), Oct 21, 2005: SHAFT. SHEARED. NR 3 ENGINE SHUTDOWN ON GROUND UPON TAXI-IN DUE TO EXCESSIVE OIL LEAK. CAUSE OF EXCESSIVE OIL LEAKAGE WAS DUE TO A SHEARED LOWER SHAFT SECTION OF THE NOSE CASE 
- [SDR NACA20050008](https://openairdocs.org/sdr/NACA20050008), Mar 8, 2005: CYLINDER. FAILED. NR 1 ENGINE SHUT DOWN AFTER BACKFIRING IN CRUISE AND COULD NOT RE-LEAN. REPLACED NR 10 CYLINDER DUE TO EXHAUST VALVE FAILURE. OP AND LEAK CHECK GOOD. COMPRESSIO
- [SDR NACA20050009](https://openairdocs.org/sdr/NACA20050009), Mar 6, 2005: SWITCH. BROKEN. NR 2 PROPELLER WOULD NOT UNFEATHER AFTER LANDING. REPLACED BROKEN BLADE SWITCH LEAD. CHECKED GOOD.
- [SDR NACA20050066](https://openairdocs.org/sdr/NACA20050066), Jan 12, 2005: DOWNLOCK SWITCH. FROZEN. RIGHT MAIN LANDING GEAR WARNING LIGHT SHOWING GEAR NOT DOWN AND LOCKED. REPLACED RIGHT MAIN LANDING GEAR DOWNLOCK SWITCH. CHECKED GOOD. FOUND WATER FROZEN IN RI
- [SDR NACA20040064](https://openairdocs.org/sdr/NACA20040064), Dec 20, 2004: TRANSMITTER. INOPERATIVE. PRECAUTIONARY ENGINE SHUTDOWN, DUE TO LOSS OF OIL PRESSURE ON NR 4 ENGINE, OIL PRESSURE LIGHT STAYS OFF. REPAIRED ELECT CONNECTIONS IN OIL TRANSMITTER CANNON PL
- [SDR NACA20040063](https://openairdocs.org/sdr/NACA20040063), Dec 7, 2004: PROBE. DIRTY. NR 2 ENGINE SHUT DOWN DUE TO STEADY OIL LOSS INDICATION. CLEANED OIL QUANTITY CONNECTORS AT NR 2 OIL QUANTITY PROBE. OPS CHECKED GOOD.
- [SDR NACA20040045](https://openairdocs.org/sdr/NACA20040045), Oct 6, 2004: CYLINDER HEAD. CRACKED. DISCREPANCY: NR 4 ENGINE SHUT DOWN DUE TO LOW COMPRESSION INDICATION ON NR 2 CYLINDER. FOUND NR 2 CYLINDER WITH CRACKED HEAD. REPLACED NR 2 CYLINDER. CHECKED GO
- [SDR NACA20040043](https://openairdocs.org/sdr/NACA20040043), Oct 4, 2004: ENGINE. OVERSPEED. NR 3 ENGINE SHUT DOWN DUE TO OVERSPEED AND LOSS OF OIL. FOUND NR 3 ENGINE SEIZED AND OIL OVERBOARD. REPLACED NR 3 ENGINE. CHECKED GOOD.
- [SDR NACA20040037](https://openairdocs.org/sdr/NACA20040037), Sep 17, 2004: CYLINDER. FAILED. NR 3 ENGINE SHUT DOWN DUE TO NR 8 CYLINDER DOUBLE SHORTED SECONDARY. REPLACED NR 3 ENGINE DUE TO CYLINDER FAILURE AND METAL CONTAMINATION..
- [SDR NACA20040018](https://openairdocs.org/sdr/NACA20040018), Apr 13, 2004: ENGINE. LEAKING. NR 4 ENGINE SHUT DOWN DUE TO OIL LOSS. REPLACED NR 4 ENGINE DUE TO INTERNAL FAILURE.
- [SDR NACA20040015](https://openairdocs.org/sdr/NACA20040015), Mar 31, 2004: CYLINDER HEAD. CRACKED. NR 4 ENGINE FEATHERED DUE TO BACKFIRING, RUNNING ROUGH, AND LOSS OF POWER. REPLACED NR 4 ENGINE, NR 2 CYLINDER DUE TO CRACKED HEAD.
- [SDR NACA20040004](https://openairdocs.org/sdr/NACA20040004), Jan 8, 2004: PIN. SHEARED. NOSE LANDING GEAR DID NOT COME UP PROPERLY AFTER DEPARTURE. FOUND UNLATCH ROLLER PIN SHEARED, INSPECTED UPLATCH AND FOUND NO OTHER DEFECTS. REPLACED ROLLER PIN.
- [SDR NACA20040001](https://openairdocs.org/sdr/NACA20040001), Jan 4, 2004: CYLINDER HEAD. CRACKED. NR 1 ENGINE SHUT DOWN DUE TO HIGH OIL LOSS. REPLACED NR 1 ENGINE, NR 6 CYLINDER DUE TO CRACKED HEAD. CHECKED GOOD.
- [SDR NACA20030129](https://openairdocs.org/sdr/NACA20030129), Dec 28, 2003: SPARK PLUG. FOULED. DISCREPANCY: NR 3 ENGINE SHUT DOWN DUE TO NR 16 CYLINDER DOUBLE SHORTED SECONDARY. CA: REPLACED NR 3 ENGINE, NR 16 CYLINDER FRONT AND REAR SPARK PLUGS. CHECKED 
- [SDR NACA20030128](https://openairdocs.org/sdr/NACA20030128), Dec 27, 2003: SPARK PLUG. FOULED. NR 3 ENGINE SHUT DOWN DUE TO DOUBLE SHORTED SECONDARY NR 9 CYLINDER. REPLACED NR 3 ENGINE, NR 9 CYLINDER FRONT AND REAR SPARK PLUGS. CHECKED GOOD.
- [SDR NACA20030127](https://openairdocs.org/sdr/NACA20030127), Dec 18, 2003: SPARK PLUG. CRACKED. NR 1 ENGINE SHUT DOWN. SUSPECT NR 1 CYLINDER. INSPECTED ALL CYLINDERS FOR CRACKED HEADS, NONE FOUND. REPLACED NR 1 CYLINDER FRONT & REAR SPARK PLUGS. CHECKED GO
- [SDR NACA20030122](https://openairdocs.org/sdr/NACA20030122), Nov 25, 2003: CYLINDER. CRACKED. NR 4 ENGINE SHUT DOWN DUE TO EXCESSIVE VIBRATION. REPLACED NR 4 ENGINE, NR 2 CYLINDER. OPS CHECKED GOOD.
- [SDR NACA20030119](https://openairdocs.org/sdr/NACA20030119), Oct 28, 2003: SPARK PLUG. CRACKED. NR 3 ENGINE SHUT DOWN DUE TO BACK FIRING AND RUNNING ROUGH. NR 1 CYLINDER DOUBLE SHORTED SECONDARY. REPLACED NR 1, NR 2 AND NR 4 CYLINDERS SPARK PLUGS DUE TO FO
- [SDR NACA20030115](https://openairdocs.org/sdr/NACA20030115), Oct 14, 2003: CYLINDER. GALLED. NR 1 ENGINE SHUT DOWN DUE TO DOUBLE SHORTED SECONDARY NR 18 CYLINDER. REPLACED NR 18 CYLINDER. OP CHECKED GOOD.
- [SDR NACA20030108](https://openairdocs.org/sdr/NACA20030108), Aug 12, 2003: CYLINDER. CRACKED. NR 2 ENGINE SHUT DOWN ON GROUND, NR 8 CYLINDER CRACKED. REPLACED NR 2 ENGINE, NR 8 CYLINDER.
- [SDR NACA20030097](https://openairdocs.org/sdr/NACA20030097), Jul 23, 2003: SPARK PLUG. CRACKED. NR 4 ENGINE NR 2 CYLINDER DOUBLE SHORTED SECONDARY. REPLACED FRONT AND REAR SPARK PLUGS ON NR 2 CYLINDER.
- [SDR NACA20030092](https://openairdocs.org/sdr/NACA20030092), Jul 3, 2003: SKIN. CRACKED. CRACK IN FUSELAGE SKIN ON RIGHT HAND SIDE AT STATION 415 & 417. REPAIRED CRACK PER NAC DRAWING NAC2003-07, DATED 07/03/2003 AND FAA APPROVED 8110-3 DATED 07/03/
- [SDR NACA20030091](https://openairdocs.org/sdr/NACA20030091), Jul 3, 2003: SKIN. CRACKED. CRACK IN FUSELAGE SKIN AT LEFT HAND SIDE AT STATION 415 & 417. REPAIRED CRACK PER NAC DRAWING NAC2003-08 DATED 07/03/2003 AND FAA APPROVED 8110-3 DATED 07/03/20
- [SDR NACA20030079](https://openairdocs.org/sdr/NACA20030079), Mar 19, 2003: CARBURETOR. POWER LOSS. DISCREPANCY: #3 ENGINE SHUT DOWN DUE TO HIGH FUEL FLOW AND LOW BMEP.CORRECTIVE ACTION: REPLACED CARBURETOR AND FUEL FEED VALVE.
- [SDR NACA20030078](https://openairdocs.org/sdr/NACA20030078), Feb 28, 2003: EXHAUST PIPE. CRACKED. DISCREPANCY: ZONE #1 FIRE WARNING ON #3 ENGINE DURING TAKE OFF ROLL.CORRECTIVE ACTION: REPLACED #10 TO #12 CYLINDER EXHAUST AND #11 TO #13 EXHAUST DUE TO BURN T
- [SDR NACA20030075](https://openairdocs.org/sdr/NACA20030075), Feb 11, 2003: SPARK PLUG. CRACKED. DISCREPANCY: #2 ENGINE SHUT DOWN DUE TO LOW BMEP.CORRECTIVE ACTION: REPLACED #2 CYLINDER REAR SPARK PLUG AND RETORQUED COIL AND LEAD.
- [SDR NACA20020056](https://openairdocs.org/sdr/NACA20020056), Nov 4, 2002: CASE. MAKING METAL. NR 4 ENGINE LOSS OF BMEP AND LOSS OF OIL QUANTITY. REPLACED NR 4 ENGINE DUE TO HIGH METAL CONTENT FOUND IN FRONT ACCESSORY SECTION.
- [SDR NACA20020042](https://openairdocs.org/sdr/NACA20020042), Sep 13, 2002: SCROLL. SHEARED. Discrepancies: Smoke in Cockpit. R/H Cabin Super Charger Impellar nut sheared.Corrective Action: Replaced R/H Cabin Supercharger Scroll.
- [SDR NACA20020041](https://openairdocs.org/sdr/NACA20020041), Aug 31, 2002: IGNITION LEAD. SHORTED. PRECAUTIONARY SHUTDOWN THE NR 3 ENGINE DUE TO DOUBLE SHORTED SECONDARY ON THE NR 10 CYLINDER. REPLACED SPARK PLUGS, Y-LEAD, SHORT LEADS, AND COIL.
- [SDR NACA20020032](https://openairdocs.org/sdr/NACA20020032), Jul 15, 2002: SPARK PLUG. CRACKED. PRECAUTIONARY SHUT DOWN THE NR 4 ENGINE IN CRUISE DUE TO SHORTED SECONDARY ON THE NR 11 CYLINDER. FOUND CRACKED NOSE CERAMICS ON BOTH PLUGS. REMOVED AND REPLACE
- [SDR NACA20020014](https://openairdocs.org/sdr/NACA20020014), Mar 21, 2002: DOOR FRAME. CRACKED. PASSENGER DOOR, FORWARD FRAME, CRACKED 16 INCHES ABOVE LOWER CORNER OF THE DOOR. REMOVED DAMAGED AREA, FABBED AND INSTALLED A FILLER. FABBED AND INSTALLED A SHI
- [SDR NACA20020008](https://openairdocs.org/sdr/NACA20020008), Feb 21, 2002: SPARK PLUG. SHORTED. PRECAUTIONARY SHUT DOWN NR 2 ENGINE, DUE TO DOUBLE SHORTED SECONDARY, NR 16 CYLINDER. REPLACED FRONT AND REAR SPARK PLUGS.
- [SDR NACA20020007](https://openairdocs.org/sdr/NACA20020007), Feb 16, 2002: CYLINDER. CRACKED. FEATHERED NR 3 ENGINE DUE TO RAPID BACKFIRING. REMOVED AND REPLACED NR 4 CYLINDER ON THE NR 3 ENGINE.
- [SDR NACA20010037](https://openairdocs.org/sdr/NACA20010037), Nov 8, 2001: CYLINDER. LEAKING. NR 1 ENGINE SMOKES AND EXCESSIVE OIL LOSS. REPLACED NR 2 CYLINDER EXHAUST PIN CAPS, TORQUED AND SAFETIED.
- [SDR NACA20010036](https://openairdocs.org/sdr/NACA20010036), Nov 7, 2001: CYLINDER. CRACKED. NR 1 ENGINE FEATHERED DUE TO RAPID OIL LOSS. REPLACED THE NR 7 CYLINDER FOR CRACKED HEAD.
- [SDR NACA20010034](https://openairdocs.org/sdr/NACA20010034), Sep 27, 2001: SUPERCHARGER. MAKING METAL. EN ROUTE, SMOKE IN COCKPIT. SHUTDOWN CABIN HEATERS, ELIMINATED SMOKE. SUSPECT NR 1 SUPERCHARGER SYSTEM. PULLED MAGNETIC PLUG ON THE NR 1 CSC, FOUND TO BE FULL O
- [SDR NACA20010027](https://openairdocs.org/sdr/NACA20010027), Jul 9, 2001: CYLINDER. DAMAGED. FEATHERED NR 3 ENGINE AT 2311Z DUE TO LOSS OF OIL. REMOVED AND REPLACED ENGINE ASSY.
- [SDR NACA20010019](https://openairdocs.org/sdr/NACA20010019), May 2, 2001: COIL. SHORTED. NR 1 ENGINE SHUTDOWN AT 2224Z DUE TO 1 BACKFIRE AND LOW COMPRESSION PATTERN ON CYLINDER NR 5. REPLACED NR 5 CYLINDER COIL, CHECKED PLUGS, LEADS, AND Y-LEAD (ALL
- [SDR NACA2001017](https://openairdocs.org/sdr/NACA2001017), Apr 24, 2001: COIL. SHORTED. FEATHERED NR 2 ENGINE AT 1935 DUE TO BACKFIRING AND RUNNING ROUGH. REPLACED THE NR 16 CYLINDER IGNITION COIL.
- [SDR NACA2001016](https://openairdocs.org/sdr/NACA2001016), Apr 20, 2001: GOVERNOR. FAILED. NR 3 PROPELLER UNCONTROLLABLE, NR 3 ENGINE RUNAWAY, 3300RPM. REPLACED PROPELLER GOVERNOR, INSPECTED ALL OIL SCREENS/CETERFUGE, NO DEFECTS. OVERSPEED WITHIN LIMI
- [SDR NACA2001015](https://openairdocs.org/sdr/NACA2001015), Mar 13, 2001: SKIN. CRACKED. CRACK IN FUSELAGE SKIN AT STA R89 LONGERON R24. REMOVED INTERNAL DOUBLER, SAFETY SEALS, AND AFT SECTION OF LONGERON R24 (8 INCHES). REMOVED SECTION OF SKIN FOR 
- [SDR NACA2001012](https://openairdocs.org/sdr/NACA2001012), Mar 13, 2001: FUSE. BLOWN. UNABLE TO CONTROL NR 2 PROPELLER WITH MASTER LEVER OR TOGGLES. REPLACED FUSE IN THE PROP SYNC BOX.

All 60: https://openairdocs.org/aircraft/N43872/reports.md

## STCs that may be installed (OpenAirDocs) (59, first 50)

Approved for this aircraft's airframe or engine model, in force first, then newest. The registry doesn't record which STCs an aircraft has; its records do.

### Approved for the airframe (Douglas DC-6)

- [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 SA863EA](https://openairdocs.org/stc/SA863EA): Incorporation of DME Corporation emergency evacuation slide lighting system. Astronics Luminescent Systems Inc
- [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 ST334CH](https://openairdocs.org/stc/ST334CH): Installation of Superflite 102 fabric. Aviation Products Systems Inc
- [STC SA1045WE](https://openairdocs.org/stc/SA1045WE): Installation of door-mounted inflatable evacuation slides in accordance with United Air Lines Approved Drawing List COA 6-3072/COA 6-3087. United Air Lines Supplemental Revision No. 1 dated August 25, 1965, to Douglas Airplane Flight Manual SM-19501, or Supplemental Revision No. 1 dated June 10, 1966, to Douglas AFM SM-19544 is required. United Airlines 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 SA4-577](https://openairdocs.org/stc/SA4-577): Aileron trim control gearing modification. United Airlines Inc
- [STC SA363SO](https://openairdocs.org/stc/SA363SO): Cockpit voice recorder. Delta Airlines Inc
- [STC SA1366GL](https://openairdocs.org/stc/SA1366GL): Surrendered and incorporated into STC ST334CH. Cooper Aviation Supply Company, Inc
- [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 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 ST595SO](https://openairdocs.org/stc/ST595SO): Installation of exhaust system bracket. Atlas Aircraft Corporation
- [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 ST484SO](https://openairdocs.org/stc/ST484SO): Installation of cargo restraining bulkhead. Aeronautical Engineers, Inc
- [STC SA3151WE](https://openairdocs.org/stc/SA3151WE): Installation of 3000 gallon external retardant tanks under the fuselage at the wing center section. Aero Union Corporation
- [STC ST536SO](https://openairdocs.org/stc/ST536SO): Installation of aft cargo door. Aeronautical Engineers, Inc
- [STC ST597SO](https://openairdocs.org/stc/ST597SO): Installation of aft cargo door. Aeronautique Engr Inc
- [STC ST535SO](https://openairdocs.org/stc/ST535SO): Installation of cargo floor. Aeronautical Engineers, Inc
- [STC ST843SO](https://openairdocs.org/stc/ST843SO): Installation of aft cargo door. Aeronautical Engineers, Inc
- [STC SA2994WE](https://openairdocs.org/stc/SA2994WE): Deactivation of high blower on CB-16 engines. Mercer Enterprises
- [STC ST807SO](https://openairdocs.org/stc/ST807SO): Installation of cargo interior and extension of lower aft cargo compartment. Bellomy-Lawson Aviation Inc
- [STC ST528SO](https://openairdocs.org/stc/ST528SO): Installation of cargo restraining bulkhead. Bellomy-Lawson Aviation Inc
- [STC ST555SO](https://openairdocs.org/stc/ST555SO): Installation of rear cargo door. Bellomy-Lawson Aviation Inc
- [STC SA2761WE](https://openairdocs.org/stc/SA2761WE): Interior arrangement. Mercer Enterprises
- [STC ST495SO](https://openairdocs.org/stc/ST495SO): Installation of aft cargo door. Aeronautical Engineers, Inc
- [STC ST470SO](https://openairdocs.org/stc/ST470SO): Installation of aft cargo door. Bellomy-Lawson Aviation Inc
- [STC ST463SO](https://openairdocs.org/stc/ST463SO): Installation of cargo door. Miami Aviation Corp
- [STC ST456SO](https://openairdocs.org/stc/ST456SO): Installation of cargo restraining bulkhead. A clean and unobstructed passageway between the crew compartment and cargo compartment on the side of the bulkhead is required. Aeronautical Engineers, Inc
- [STC SA1-580](https://openairdocs.org/stc/SA1-580): Television broadcasting equipment. Midwest Program on Airborne Television Instruction
- [STC SA7SO](https://openairdocs.org/stc/SA7SO): Radome and radar antennae mount provisions for up to 22-inch diameter antennae, RAC AVQ-10 or Bendix RDR-1 (X/C Band). Tempo Design Corp
- [STC SA1082WE](https://openairdocs.org/stc/SA1082WE): Interior arrangements. AiResearch Aivation Service Co
- [STC SA1148WE](https://openairdocs.org/stc/SA1148WE): Interior modifications. Jay- Dee Aircraft Supply Co
- [STC SA12SO](https://openairdocs.org/stc/SA12SO): Altimeter vibrators. Pan American World Airways Inc
- [STC SA1302WE](https://openairdocs.org/stc/SA1302WE): Fairchild A100 voice recorder. Western Airlines Inc
- [STC SA1517WE](https://openairdocs.org/stc/SA1517WE): Interior arrangement for 97 occupants, DME installation, interior emergency lighting installation. Mercer Enterprises
- [STC SA197SO](https://openairdocs.org/stc/SA197SO): Cockpit voice recorder. Pan American World Airways Inc
- [STC SA1PC](https://openairdocs.org/stc/SA1PC): DC-7 increased power cabin superchargers. Hawaiian Airlines Inc
- [STC SA21SO](https://openairdocs.org/stc/SA21SO): Modified zero reader system. Pan American World Airways Inc
- [STC SA229SO](https://openairdocs.org/stc/SA229SO): B-400 oil separator. Air Carrier Eng Service Inc
- [STC SA4-1169](https://openairdocs.org/stc/SA4-1169): Interior modifications. AiResearch Aivation Service Co
- [STC SA4-1311](https://openairdocs.org/stc/SA4-1311): Ceconite 101 covering of rudder. Cooper Engineering Corporation
- [STC SA4-202](https://openairdocs.org/stc/SA4-202): Oil filter 30816A with CP-1438-0 element. Winslow Aerofilter Corp
- [STC SA4-218](https://openairdocs.org/stc/SA4-218): Windows in fuselage. Pan American World Airways Inc
- [STC SA4-328](https://openairdocs.org/stc/SA4-328): Step kit added to fore and aft cargo door. National Aircraft Corp
- [STC SA4-41](https://openairdocs.org/stc/SA4-41): Structure, power plant, systems and equipment modification. Northwest Airlines Inc
- [STC SA4-502](https://openairdocs.org/stc/SA4-502): Engine mount core assemblies. Dow-Elco Inc

All 59: https://openairdocs.org/aircraft/N43872/stcs.md

## Earlier aircraft with N43872

The FAA can reassign an N-number once a registration is cancelled. These aircraft carried N43872 before.

- [Cancelled 1956-01-20](https://openairdocs.org/deregistered/N43872-1956-01-20): Taylorcraft BC12-D, S/N 7531. Owner: [Fairweather Paul B](https://openairdocs.org/faa-owner/FAIRWEATHER%20PAUL%20B), [Pittsfield, MA](https://openairdocs.org/faa-place/MA/Pittsfield)

## Related

- Other Douglas DC-6 aircraft: https://openairdocs.org/model/douglas-dc-6/aircraft.md

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