# N99330: 1952 Douglas DC-6A, registration cancelled 2011-04-22

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: April 22, 2011
- Status when cancelled: Registration pending, pending cancellation
- Airframe: [Douglas DC-6A](https://openairdocs.org/model/douglas-dc-6a) (registry code 3021706)
- Engine: [Pratt & Whitney R-2800 series](https://openairdocs.org/engine/pratt-whitney-r-2800-series) (registry code 52026)
- Data sheets: [TCDS 6A3](https://openairdocs.org/tcds/6A3) (OpenAirDocs)
- Serial number: 43576
- Year built: 1952
- Type of aircraft: Fixed wing multi engine
- Engine type: Reciprocating
- Airworthiness: Standard, transport
- Airworthiness date: December 4, 1987
- Last registry action: October 2, 2008
- Mode S code: ADE0A2
- Location: [Fairbanks, AK](https://openairdocs.org/faa-place/AK/Fairbanks)
- Owner type: Individual
- Owner's area on the map: 64.8774° N, 148.1486° W: Placed by OpenAirDocs at the center of ZIP code 99709, within about 13 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N99330
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=99330
- Page: https://openairdocs.org/deregistered/N99330-2011-04-22

From the FAA registry file of October 29, 2026, cancelled registrations. Owners' street addresses are left out. The Mode S code belongs to the N-number, not the airframe.

ADs and bulletins for the Douglas DC-6A: https://openairdocs.org/model/douglas-dc-6a.md

## Service difficulty reports (66, newest 50)

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

- [SDR NACA20070013](https://openairdocs.org/sdr/NACA20070013), Apr 3, 2007: CYLINDER HEAD. CRACKED. NR 2 ENGINE FIRE ON TAXI. ENGINE SHUT DOWN LT BANK CO2 BOTTLES DISCHARGED. CREW ALSO DISCHARGED MAIN CABIN ABC, COCKPIT AND CABIN HALON BOTTLES TO EXTINGUISH FI
- [SDR NACA20060054](https://openairdocs.org/sdr/NACA20060054), Nov 30, 2006: CYLINDER. CRACKED. NR 4 ENGINE SHUT DOWN DUE TO BACKFIRING. REPLACED NR 16 CYLINDER DUE TO CRACKED HEAD, REF: NAC DC-6 MM TASK CARD V PG 16 AND 16A. GROUND RUN CHECK GOOD, NO LEAK
- [SDR NACA20060051](https://openairdocs.org/sdr/NACA20060051), Nov 6, 2006: CYLINDER. FAILED. NR 1 ENGINE SHUTDOWN DUE TO DOUBLE SHORTED SECONDARY ON NR 1 CYLINDER.REPLACED NR 1 CYLINDER DUE TO RINGLAND FAILURE.
- [SDR NACA20060042](https://openairdocs.org/sdr/NACA20060042), Jul 27, 2006: CYLINDER HEAD. SEPARATED. NR 4 ENGINE SHUTDOWN DUE TO BACK FIRING. REPLACED NR 2 CYLINDER DUE TO A BLOWN HEAD. REF: NAC DC-6MM SEC. V. PG.16-16A.
- [SDR NACA20060045](https://openairdocs.org/sdr/NACA20060045), Jul 7, 2006: STRINGER. CRACKED. LT WING STRINGER CRACKED AT STA. 194. REPAIRED LT WING LOWER STRINGER 22 SPLICE, WING STA. 194. REF; NAC DRAWING: NAC2006-06 REV: 1R DATED 7 JULY 2006.
- [SDR NACA20060044](https://openairdocs.org/sdr/NACA20060044), Jul 7, 2006: SKIN. CRACKED. LT HAND WING LOWER SKIN STA. 210, STR. 22 WING SKIN CRACKED AFT OF CENTER SPAR. REPAIRED LT WING LOWER SKIN STA. 213, STR. 22 REF: NAC DRAWING: NAC2006-05 REV: 
- [SDR NACA20060036](https://openairdocs.org/sdr/NACA20060036), May 11, 2006: UNKNOWN. OUT OF ADJUST. NR 1, 2, 3, & 4 ENGINES FUEL FLOW 500 PPH, NO DERICHMENT OR ENRICHMENT. DETERMINED MIXTURE NOT ENGAGED TO FULL RICH POSITION FOR TAKEOFF. A 30" GROUND RUN CHECK
- [SDR NACA20060035](https://openairdocs.org/sdr/NACA20060035), May 9, 2006: CYLINDER. CRACKED. NR 2 ENGINE FEATHERED DUE TO BACKFIRING. SUSPECT NR 4 CYLINDER. REPLACED NR 4 CYLINDER PER NAC DC-6MM SEC V PG 16-16A. OPERATIONAL CHECK AND LEAK CHECK GOOD.
- [SDR NACA20060031](https://openairdocs.org/sdr/NACA20060031), Mar 27, 2006: VALVE SEAT. FAILED. NR 3 ENGINE SHUT DOWN AT CRUISE FLIGHT DUE TO BACKFIRE. REPLACED NR 11 CYLINDER DUE TO EXHAUST VALVE SEAT FAILURE. PER REF: NAC DC-6MM SEC V PG 16 & 16A.
- [SDR NACA20060010](https://openairdocs.org/sdr/NACA20060010), Feb 2, 2006: FLOOR SUPPORT. CORRODED. RIGHT CENTER FLOORBEAM BOTTOM CORRODED AT STATION 282-298. REMOVED DAMAGE AND INSTALLED REPAIR PER DER DRAWING NAC2006-01, IR & FAA 8110-3, DATED 2 FEBRUARY 200
- [SDR NACA20050032](https://openairdocs.org/sdr/NACA20050032), Dec 24, 2005: SPARK PLUG. CRACKED. NR 4 ENGINE SHUTDOWN DUE TO NR 13 CYLINDER DOUBLE SHORTED SECONDARY. FOUND FRONT PLUG FOULED AND REAR PLUG WITH CRACKED CERAMIC. REPLACED WITH SERVICEABLE PLUGS
- [SDR NACA20050031](https://openairdocs.org/sdr/NACA20050031), Nov 22, 2005: SPARK PLUG. FOULED. NR 3 ENGINE SHUT DOWN DUE TO BACKFIRE AND DOUBLE SHORTED SECONDARY ON NR 15 CYLINDER. REMOVED NR 15 CYLINDER FRONT AND REAR SPARK PLUGS. NO VISUAL DEFECTS NOTED
- [SDR NACA20050026](https://openairdocs.org/sdr/NACA20050026), Oct 21, 2005: CYLINDER. CRACKED. NR 2 ENGINE SHUT DOWN ON CLIMB OUT DUE TO DOUBLE SHORTED SECONDARY NR 2 CYLINDER. FOUND NR 2 CYLINDER CRACKED. REPLACED NR 2 CYLINDER. LEAK AND OP CHECKED GOOD 
- [SDR NACA20050013](https://openairdocs.org/sdr/NACA20050013), Jun 2, 2005: CYLINDER. FAILED. NR 2 ENGINE SHUTDOWN DUE TO RUNNING ROUGH AND WOULDN'T STAY RUNNING. NR 18 CYLINDER FAILURE. REPLACED NR 18 CYLINDER. OPS CHECKED GOOD.
- [SDR NACA20050015](https://openairdocs.org/sdr/NACA20050015), May 24, 2005: STRINGER. CRACKED. STRINGER 19 CAP CRACKED AT STA 196 AND 233. REPAIRED RIGHT WING LOWER STR 19 AND 21 CAP SPLICE WING STA 222 PER DWG NAC 2005-02 DATED 24 MAY 2005.
- [SDR NACA20050014](https://openairdocs.org/sdr/NACA20050014), May 24, 2005: STRINGER. CRACKED. X-RAY REVEALED CRACK, STR 19, STA 182. REPAIRED LOWER RIGHT WING STRINGER NR 19, STA 181 RT PER DWG NAC2005-01.
- [SDR NACA20050005](https://openairdocs.org/sdr/NACA20050005), Feb 15, 2005: CYLINDER. CRACKED. NR 4 ENGINE SHUT DOWN, WOULD NOT TAKE A LEAN. NR 4 ENGINE NR 18 CYLINDER REPLACED. OP AND LEAK CHECKED GOOD.
- [SDR NACA20050002](https://openairdocs.org/sdr/NACA20050002), Feb 1, 2005: LANDING GEAR. MALFUNCTIONED. NOSE GEAR WOULD NOT RETRACT. ISOLATED RT AND LT MAIN GEAR, PERFORMED NOSE GEAR SWING. OPS CHECKED GOOD PER MI REPORT: (CHECKED UP LOCK SWITCH ACTIVATION, NO DEF
- [SDR NACA20040059](https://openairdocs.org/sdr/NACA20040059), Nov 9, 2004: CYLINDER. CRACKED. NR 2 ENGINE SHUT DOWN DUE TO NR 9 CYLINDER DOUBLE SHORTED SECONDARY. INSPECTION OF NR 9 CYLINDER SHOWED CRACKED CYLINDER AND PLUGS OIL FOULED. PROP WOULD NOT TU
- [SDR NACA20040056](https://openairdocs.org/sdr/NACA20040056), Nov 4, 2004: CYLINDER. FAILED. ABORTED TAKEOFF DUE TO NR 2 ENGINE NR 12 CYLINDER DOUBLE SHORTED SECONDARY AND BACKFIRING. REPLACED NR 2 ENGINE NR 12 CYLINDER. OP CHECKED GOOD.
- [SDR NACA20040052](https://openairdocs.org/sdr/NACA20040052), Oct 29, 2004: ACTUATOR. INOPERATIVE. NR 1 ENGINE SHUT DOWN DUE TO HIGH AND UNCONTROLABLE OIL TEMPERATURE. REPLACED NR 1 ENGINE OIL COOLER DOOR ACTUATOR. OP CHECKED GOOD.
- [SDR NACA20040029](https://openairdocs.org/sdr/NACA20040029), Aug 24, 2004: CYLINDER. CRACKED. NR 4 ENGINE SHUT DOWN DUE TO OIL LOSS. NR 4 CYLINDER CRACKED. REPLACED NR 4 CYLINDER. OP AND LEAK CHECKED GOOD.
- [SDR NACA20040050](https://openairdocs.org/sdr/NACA20040050), Jul 24, 2004: SKIN. DAMAGED. HOLE IN FUSELAGE AFT OF THE REAR CARGO DOOR AT STA 807.5L TO 822L. REMOVED DAMAGE AND FABRICATED A NEW PATCH FROM 0.80 7075-T6. REF: DOHM FIGURE 12-22.
- [SDR NACA20040051](https://openairdocs.org/sdr/NACA20040051), Jun 17, 2004: FRAME. CRACKED. RT FUSELAGE CIRCUMFERENTIAL AT STA. R460 CRACKED APPROXIMATELY 3 INCHES ABOVE FLOOR LEVEL. REPLACED ANGLE WITH THE SAME TYPE AND MATERIAL .090 7075 T6. FABRICAT
- [SDR NACA20040024](https://openairdocs.org/sdr/NACA20040024), Jun 15, 2004: STUD. BROKEN. NR 1 ENGINE FEATHERED DUE TO OIL LOSS. FOUND BROKEN STUD AT FUEL FLOW TRANSMITTER BRACKET. REPLACED STUD, LEAK CHECKED GOOD.
- [SDR NACA20040022](https://openairdocs.org/sdr/NACA20040022), May 27, 2004: CYLINDER. DEFECTIVE. DISCREPANCY: NR 2 ENGINE SHUT DOWN DUE TO RUNNING ROUGH AND BACK FIRING AT CRUISE. NR 1 CYLINDER LT SIDE SHORTED SECONDARY. REPLACED NR 1 CYLINDER DUE TO FAILED
- [SDR NACA20040020](https://openairdocs.org/sdr/NACA20040020), May 13, 2004: VALVE. MISSING. NR 1 ENGINE SHUTDOWN DUE TO NR 12 CYLINDER LOW COMPRESSION. INSPECTED CYLINDER AND FOUND VALVE MISSING. REPLACED NR 1 ENGINE.
- [SDR NACA20040014](https://openairdocs.org/sdr/NACA20040014), Mar 4, 2004: ENGINE. LEAKING. NR 2 ENGINE SHUT DOWN DUE TO RUNNING ROUGH AND DOUBLE SHORTED SECONDARIES ON MOST CYLINDERS. REPLACED NR 2 ENGINE DUE TO BLOWER SEAL LEAKING.
- [SDR NACA20040002](https://openairdocs.org/sdr/NACA20040002), Jan 5, 2004: CYLINDER. MAKING METAL. NR 4 ENGINE SHUT DOWN DUE TO BACK FIRING, NR 6 CYLINDER LT AND RT LOW RESISTANCE SECONDARY. REPLACED NR 4 ENGINE DUE TO MAKING METAL.
- [SDR NACA20030123](https://openairdocs.org/sdr/NACA20030123), Nov 28, 2003: SEAL. WORN. NR 3 ENGINE SHUT DOWN DUE TO LOW OIL PRESSURE. FOUND OIL FILLER CAP LEAKING AND TANK DOWN TO 8 GALLONS. REPLACED OIL FILLER CAP SEALS FOR SUSPECTED SIPHONING AC
- [SDR NACA20030114](https://openairdocs.org/sdr/NACA20030114), Oct 8, 2003: SHAFT. SHEARED. NR 4 ENGINE SHUT DOWN DUE TO 0 BMEP INDICATION AND EXCESSIVE LOSS OF OIL. REPLACED ENGINE DUE TO NOSE CASE OIL PUMP FAILURE AND HIGH METAL.
- [SDR NACA20030112](https://openairdocs.org/sdr/NACA20030112), Sep 16, 2003: FIRE WARNING. FALSE ACTIVATION. TAIL HEATER FIRE WARNING INTERMITTENTLY CAME ON AFTER HEATER CHECK. GROUND OPS CHECKED ANTI-ICE HEATER SYSTEM PER NAC DC-6 OPS MANUAL CH.14-20 SECT. C, CHECKED 
- [SDR NACA20030111](https://openairdocs.org/sdr/NACA20030111), Aug 30, 2003: CYLINDER. CRACKED. NR 4 ENGINE SHUT DOWN DUE TO BACKFIRING. REPLACED NR 4 ENGINE, NR 18 CYLINDER DUE TO CRACKED HEAD. OP CHECKED GOOD.
- [SDR NACA20030109](https://openairdocs.org/sdr/NACA20030109), Aug 15, 2003: CYLINDER. MAKING METAL. NR 3 ENGINE DOUBLE SHORTED SECONDARY, ENGINE SHUT DOWN ON TAXI-IN. REPLACED NR 3 ENGINE ASSY. DUE TO NR 11 CYLINDER RING LAND/PISTON FAILURE. METAL IN SCREEN.
- [SDR NACA20030102](https://openairdocs.org/sdr/NACA20030102), Aug 6, 2003: TRANSMITTER. READS LOW. TAKE OFF ABORTED DUE TO NR 2 ENGINE LOW BMEP. NR 2 ENGINE BMEP DEFERRED: REPLACED BMEP TRANSMITTER.
- [SDR NACA20030099](https://openairdocs.org/sdr/NACA20030099), Jul 29, 2003: ENGINE. MALFUNCTIONED. NR 1 ENGINE LOSS OF OIL AND NO BMEP INDICATION. REPLACED NR 1 ENGINE ASSEMBLY.
- [SDR NACA20030098](https://openairdocs.org/sdr/NACA20030098), Jul 28, 2003: CARBURETOR. FAULTY. NR 1 ENGINE LEANS ITSELF OUT DURING FLIGHT AND ALL CLIMB CONFIGURATIONS. REPLACED NR 1 ENGINE CARBURETOR. CHECKED GOOD.
- [SDR NACA20030080](https://openairdocs.org/sdr/NACA20030080), Mar 21, 2003: CYLINDER. CRACKED. DISCREPANCY: #1 ENGINE SHUT DOWN DUE TO RUNNING ROUGH.CORRECTIVE ACTION: REPLACED #11 CYLINDER.
- [SDR NACA20030077](https://openairdocs.org/sdr/NACA20030077), Jan 30, 2003: CYLINDER. CRACKED. DISCREPANCY: #2 ENGINE SHUT DOWN DUE TO RUNNING ROUGH AND OIL LOSS.CORRECTIVE ACTION: REPLACED #2 ENGINE #4 CYLINDER.
- [SDR NACA20030067](https://openairdocs.org/sdr/NACA20030067), Jan 3, 2003: DISCREPANCY: #4 ENGINE SHUT DOWN DUE TO CARBURETOR HEAT APPROACHING RED LINE AFTER GOING INTO REVERSE.CORRECTIVE ACTION: INSPECTED CARBURETOR INTAKE FOR FOREIGN
- [SDR NACA20020057](https://openairdocs.org/sdr/NACA20020057), Nov 5, 2002: CYLINDER. CRACKED. NR 1 ENGINE PRECAUTIONARY SHUT DOWN FOR RUNNING ROUGH. FOUND NR 1 ENGINE NR 7 CYLINDER WITH A CRACKED HEAD. REPLACED CYLINDER, OP CHECK GOOD.
- [SDR NACA20020045](https://openairdocs.org/sdr/NACA20020045), Sep 26, 2002: SPARK PLUG. MALFUNCTIONED. THE NUMBER 3 ENGINE STARTED BACKFIRING. REPLACED FRONT AND REAR SPARK PLUG ON NUMBER 13 CYLINDER.
- [SDR NACA20020044](https://openairdocs.org/sdr/NACA20020044), Sep 17, 2002: CYLINDER. CRACKED. DISCREPANCIES: #3 ENGINE BACKFIRE, LOW BMEP @ 0010Z.CORRECTIVE ACTION: REPLACED #3 ENGINE, #5 CYLINDER.
- [SDR NACA20020038](https://openairdocs.org/sdr/NACA20020038), Aug 21, 2002: CYLINDER. DEFECTIVE. SHUTDOWN THE NR 3 ENGINE DUE TO DOUBLE SHORTED SECONDARY CYLINDER NR 11 AND DOUBLE SHORTED SECONDARY CYLINDER NR 15. REMOVED AND REPLACED THE NR 11 AND NR 15 CY
- [SDR NACA20020034](https://openairdocs.org/sdr/NACA20020034), Aug 3, 2002: SPARK PLUG. SHORTED. FEATHERED THE NR 2 ENGINE AT 2041Z DUE TO BACKFIRING IN CLIMB, AND DOUBLE SHORTED SECONDARY ON THE NR 10 CYLINDER. REMOVED AND REPLACED THE NR 10 LT & RT SPARK 
- [SDR NACA20020031](https://openairdocs.org/sdr/NACA20020031), Jun 11, 2002: SKIN. CRACKED. LOWER SKIN CRACKED AT STRINGER 25 RT. REPAIRED PER BOEING ROD SKETCH 02-06-20-001.
- [SDR NACA20020030](https://openairdocs.org/sdr/NACA20020030), Jun 11, 2002: SKIN. CRACKED. FUSELAGE SKIN CRACKED UNDER COPILOTS SLIDER WINDOW, IN 2 PLACES OUT OF RIVET HEAD. FABBED AND INSTALLED DOUBLER PATCH USING .032 7075-T6 PER DC-6 O/H MANUAL FIG
- [SDR NACA20020027](https://openairdocs.org/sdr/NACA20020027), Jun 5, 2002: ENGINE. MALFUNCTIONED. NR 3 ENGINE FEATHERED DUE TO BACKFIRING, AND DOUBLE SHORTED SECONDARY, NR 16 CYLINDER. BORESCOPED CYLINDER, NO DAMAGE REVEALED. COMPRESSION TESTED CYLINDER, 80/
- [SDR NACA20020017](https://openairdocs.org/sdr/NACA20020017), May 2, 2002: CONNECTOR. DEFECTIVE. NR 2 PROPELLER UNCONTROLLABLE, WILL NOT TOGGLE. REPLACED CANNON PLUG AND BREEZE FROM THE NR 2 PROP GOV STEP HEAD MOTOR TO NOSE CASE J-BOX.
- [SDR NACA20020015](https://openairdocs.org/sdr/NACA20020015), Apr 13, 2002: CYLINDER. CRACKED. FEATHERED THE NR 1 ENGINE AT 2318Z DUE TO RUNNING ROUGH AND BACKFIRING. REMOVED AND REPLACED THE NR 13 CYLINDER ON THE NR 1 ENGINE.

All 66: https://openairdocs.org/deregistered/N99330-2011-04-22/reports.md

## FAA accident and incident reports (1)

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 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.

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