# Douglas C54B-DC

- Type: Aircraft model (FAA registry)
- Registry code: 3021516
- Manufacturer (registry): DOUGLAS
- Model: C54B-DC
- Aircraft type: Fixed wing multi engine
- Category: Airplane
- Engines: 4 · Reciprocating
- Seats: 60
- Weight class: 20,000 lb and over
- Cruise speed: 173 mph
- Certification: Type certificated
- Data sheet: [TCDS A-762](https://openairdocs.org/tcds/A-762) (OpenAirDocs)
- Holder: The Boeing Company
- Registered aircraft: 0
- Page: https://openairdocs.org/model/douglas-c54b-dc

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 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 85-23-04](https://openairdocs.org/ad/85-23-04): LH/RH Elevator Trim Tab Inspection · Boeing C54-DC, C54A-DC, C54B-DC and 4 more. Effective Dec 5, 1985
- [AD 47-02-03](https://openairdocs.org/ad/47-02-03): Accumulator · Boeing C54-DC, C54A-DC, C54B-DC and 4 more. Effective Mar 27, 1980
- [AD 77-10-01](https://openairdocs.org/ad/77-10-01): Fire Resistant Prop Feathering System · Boeing C54-DC, C54A-DC, C54B-DC and 4 more. Effective Jun 16, 1977
- [AD 57-16-01](https://openairdocs.org/ad/57-16-01): Nose Gear Piston Tube · Boeing C54-DC, C54A-DC, C54B-DC and 4 more
- [AD 49-38-02](https://openairdocs.org/ad/49-38-02): Bolt Replacement · Boeing C54-DC, C54A-DC, C54B-DC and 4 more
- [AD 48-44-01](https://openairdocs.org/ad/48-44-01): Nose Gear Orifice Fitting · Boeing C54-DC, C54A-DC, C54B-DC and 4 more
- [AD 48-28-02](https://openairdocs.org/ad/48-28-02): Cabin Heater Combustion Ducts · Boeing C54-DC, C54A-DC, C54B-DC and 4 more
- [AD 48-17-04](https://openairdocs.org/ad/48-17-04): Vacuum Pumps · Boeing C54-DC, C54A-DC, C54B-DC and 4 more
- [AD 48-15-03](https://openairdocs.org/ad/48-15-03): Hydraulic Pressure Regulator Rework · Boeing C54-DC, C54A-DC, C54B-DC and 4 more
- [AD 48-14-04](https://openairdocs.org/ad/48-14-04): Tailpipe Shroud Deflector · Boeing C54-DC, C54A-DC, C54B-DC and 2 more
- [AD 48-12-02](https://openairdocs.org/ad/48-12-02): Nose And Cabin Heater Rework · Boeing C54-DC, C54A-DC, C54B-DC and 4 more
- [AD 48-12-01](https://openairdocs.org/ad/48-12-01): Fire Prevention Requirements · Boeing C54-DC, C54A-DC, C54B-DC and 4 more
- [AD 48-09-02](https://openairdocs.org/ad/48-09-02): Electrical Distribution Bus · Boeing C54-DC, C54A-DC, C54B-DC and 4 more
- [AD 48-09-01](https://openairdocs.org/ad/48-09-01): Fuel Transfer Placard · Boeing C54-DC, C54A-DC, C54B-DC and 4 more
- [AD 48-06-05](https://openairdocs.org/ad/48-06-05): Control Surface Attachment Rework · Boeing C54-DC, C54A-DC, C54B-DC and 4 more
- [AD 48-03-02](https://openairdocs.org/ad/48-03-02): Emergency Air Brake · Boeing C54-DC, C54A-DC, C54B-DC and 4 more
- [AD 48-02-02](https://openairdocs.org/ad/48-02-02): Fire Detector Clamp · Boeing C54-DC, C54A-DC, C54B-DC and 4 more
- [AD 48-01-01](https://openairdocs.org/ad/48-01-01): Wheel-Retaining Flange · Boeing C54-DC, C54A-DC, C54B-DC and 4 more
- [AD 47-42-03](https://openairdocs.org/ad/47-42-03): Fire Prevention Changes · Boeing C54-DC, C54A-DC, C54B-DC and 4 more
- [AD 47-42-02](https://openairdocs.org/ad/47-42-02): Cowling Fire Seal · Boeing C54-DC, C54A-DC, C54B-DC and 4 more
- [AD 47-42-01](https://openairdocs.org/ad/47-42-01): Gust Lock Rework · Boeing C54-DC, C54A-DC, C54B-DC and 4 more
- [AD 47-33-01](https://openairdocs.org/ad/47-33-01): Horizontal Stabilizer Outer Hinge Bracket · Boeing C54-DC, C54A-DC, C54B-DC and 4 more
- [AD 47-27-04](https://openairdocs.org/ad/47-27-04): Exhaust Collector Rings · Boeing C54-DC, C54A-DC, C54B-DC and 4 more
- [AD 47-27-02](https://openairdocs.org/ad/47-27-02): Spar Web Structure · Boeing C54-DC, C54A-DC, C54B-DC and 4 more
- [AD 47-16-02](https://openairdocs.org/ad/47-16-02): Flexible Conduit Between the Solenoid and the Firewall Junction Box · Boeing C54-DC, C54A-DC, C54B-DC and 4 more
- [AD 47-16-01](https://openairdocs.org/ad/47-16-01): Circuit Breaker Switches in Each Nacelle Junction Box · Boeing C54-DC, C54A-DC, C54B-DC and 4 more
- [AD 47-12-02](https://openairdocs.org/ad/47-12-02): Center Main Bearings · Boeing C54-DC, C54A-DC, C54B-DC and 4 more
- [AD 47-12-01](https://openairdocs.org/ad/47-12-01): Openings Around the Control Cables and Flap Buss System · Boeing C54-DC, C54A-DC, C54B-DC and 4 more
- [AD 47-02-05](https://openairdocs.org/ad/47-02-05): Electrical System · Boeing C54-DC, C54A-DC, C54B-DC and 4 more
- [AD 47-02-04](https://openairdocs.org/ad/47-02-04): Engine Primer Solenoid · Boeing C54-DC, C54A-DC, C54B-DC and 4 more
- [AD 47-02-02](https://openairdocs.org/ad/47-02-02): Vertical Stabilizer Forward Attach Fitting · Boeing C54-DC, C54A-DC, C54B-DC and 4 more
- [AD 47-02-01](https://openairdocs.org/ad/47-02-01): Exhaust Collector Rings · Boeing C54-DC, C54A-DC, C54B-DC and 4 more
- [AD 46-39-05](https://openairdocs.org/ad/46-39-05): Main Fuel Line Supporting Brackets · Boeing C54-DC, C54A-DC, C54B-DC and 3 more
- [AD 46-39-04](https://openairdocs.org/ad/46-39-04): Fuel Tank Selector and Crossfeed Valves · Boeing C54-DC, C54A-DC, C54B-DC and 3 more
- [AD 46-39-03](https://openairdocs.org/ad/46-39-03): Magneto Wires · Boeing C54-DC, C54A-DC, C54B-DC and 3 more
- [AD 46-27-02](https://openairdocs.org/ad/46-27-02): Nose Wheel Brace Strut Collar · Boeing C54-DC, C54A-DC, C54B-DC and 4 more
- [AD 46-27-01](https://openairdocs.org/ad/46-27-01): Spar Webs · Boeing C54-DC, C54A-DC, C54B-DC and 3 more
- [AD 46-24-02](https://openairdocs.org/ad/46-24-02): Magneto Wires · Boeing C54-DC, C54A-DC, C54B-DC and 3 more
- [AD 46-11-03](https://openairdocs.org/ad/46-11-03): Landing Gear Door Stud · Boeing C54-DC, C54A-DC, C54B-DC and 1 more
- [AD 46-11-02](https://openairdocs.org/ad/46-11-02): Copilot Oxygen Regulator · Boeing C54-DC, C54A-DC, C54B-DC and 3 more

## Information bulletins (advisory) (1)

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

## Registered aircraft

None registered with this model now.

## NTSB investigations (6)

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 ANC04LA052](https://openairdocs.org/ntsb/ANC04LA052), May 8, 2004: Douglas C-54B (N44911), McGrath, AK, substantial damage. Probable cause: A fuel tank explosion in the left wing auxiliary fuel tank, and subsequent fuel fire that occurred during engine start for an undetermined reason.
- [NTSB LAX90TL#02](https://openairdocs.org/ntsb/LAX90TL%2302), Apr 30, 1990: Douglas C-54B (N67109), Chico, CA, substantial damage
- [NTSB UNK78X0114](https://openairdocs.org/ntsb/UNK78X0114), Apr 4, 1978: Douglas C-54 (N88909), N Caicos, Tokelau, substantial damage
- [NTSB MIA76OM011](https://openairdocs.org/ntsb/MIA76OM011), Sep 16, 1976: Douglas C-54B (N88939), Grand Turk, Tokelau, substantial damage
- [NTSB UNK69X0118](https://openairdocs.org/ntsb/UNK69X0118), Apr 25, 1969: Douglas DC-4 (N3934C), Enugu, Nicaragua, substantial damage
- [NTSB FTW62A0034](https://openairdocs.org/ntsb/FTW62A0034), May 9, 1962: Douglas C-54B (N88894), Ackerly, TX, substantial damage

## FAA accident and incident reports (4)

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.

- [Accident 20040507007689A](https://openairdocs.org/incident/20040507007689A), May 7, 2004: Doug C54BDC (N44911), Mcgrath, AK, Destroyed. (-23) Brooks air fuel a/c N44911 had an explosion in the area of number one engine after engine startup. This was a four-engine start sequence in which the #1…
- [Incident 19970902029709I](https://openairdocs.org/incident/19970902029709I), Sep 2, 1997: Doug C54BDC (N44911), Fairbanks, AK, Minor damage. Narrative: after takeoff captain noticed #2 engine cowling had shifted forward and lower forward edge had been hit by the propeller. The #2 engine was shutdown…
- [Accident 19900430011979A](https://openairdocs.org/incident/19900430011979A), Apr 30, 1990: Doug C54BDC (N67109), Chico, CA, Substantial damage. Landing gear collapsed. Aircraft veered off side of runway. Left wing tip caught fire. Fire spread to fuselage.
- [Accident 19841018060789A](https://openairdocs.org/incident/19841018060789A), Oct 18, 1984: Doug C54BDC (N88939), South Caicos I, TK, Destroyed. Landed gear up on beach after 3 engines failed due to low fuel and electrical failure. Suspect illegal cargo load.

## Service difficulty reports (54, newest 50)

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

- [SDR 2001F00314](https://openairdocs.org/sdr/2001F00314), Sep 19, 2001: ELECTRODE. MISSING. FOUND CENTER ELECTRODE MISSING FROM PLUG. (M)
- [SDR 2001F00313](https://openairdocs.org/sdr/2001F00313), Sep 19, 2001: PAD. WORN. PADS WORN ON BRAKE, NEEDS OVH, NR 1 BRAKE. (M)
- [SDR 2001F00312](https://openairdocs.org/sdr/2001F00312), Sep 19, 2001: TIRE. DAMAGED. TIRE HAS MISSING CHUNK OF RUBBER IN CENTER ABOUT 10 INCHES LONG, NR 4 MAIN. (M)
- [SDR 2001F00311](https://openairdocs.org/sdr/2001F00311), Sep 19, 2001: WIRE. BROKEN. BROKE WIRE ON CANNON PLUG. (M)
- [SDR 2001F00302](https://openairdocs.org/sdr/2001F00302), Sep 19, 2001: LIGHT. INOPERATIVE. TEST BUTTON QUIT WORKING, NO LIGHT. (M)
- [SDR 2001F00301](https://openairdocs.org/sdr/2001F00301), Sep 19, 2001: STARTER. INOPERATIVE. BURNS AND BRUSHES DON'T WORK. (M)
- [SDR B2O2002F00011](https://openairdocs.org/sdr/B2O2002F00011), Sep 15, 2001: BULB. BURNED OUT. CHANGED A COUPLE OF BURNED OUT COCKPIT INSTRUMENT LIGHTS.
- [SDR B2O2002F00015](https://openairdocs.org/sdr/B2O2002F00015), Aug 30, 2001: RIVET. LOOSE. LOOSE RIVETS IN BELLY, RESHOT RIVETS IN 2 PLACES.
- [SDR B2O2002F00013](https://openairdocs.org/sdr/B2O2002F00013), Aug 30, 2001: PUSHROD TUBE. WORN. HOLE WORN IN PUSHROD TUBE, TUBE LOOSE FROM ENGINE BAFFLE.
- [SDR B2O2002F00010](https://openairdocs.org/sdr/B2O2002F00010), Aug 30, 2001: THERMOCOUPLE. INOPERATIVE. CHT THERMOCOUPLE INOPERATIVE. CHANGED CHT THERMOCOUPLE.
- [SDR B2O2002F00008](https://openairdocs.org/sdr/B2O2002F00008), Aug 30, 2001: TORQUE TUBE. WORN. LT WING TE FLAP TORQUE TUBE WORN.
- [SDR B2O2002F00007](https://openairdocs.org/sdr/B2O2002F00007), Aug 30, 2001: FOLLOWER. CRACKED. FLAP FOLLOWER, HAD SMALL CRACK STARTING AT FLEX POINT, REPLACED WITH NEW.
- [SDR B2O2002F00006](https://openairdocs.org/sdr/B2O2002F00006), Aug 30, 2001: TORQUE TUBE. WORN. TORQUE TUBE ON RT WING TE FLAP WORN.
- [SDR B2O2002F00005](https://openairdocs.org/sdr/B2O2002F00005), Aug 30, 2001: BUSHING. WORN. NR 4 GEAR DOOR BUSHING WORN. REMOVED AND REPLACED.
- [SDR B2O2002F00004](https://openairdocs.org/sdr/B2O2002F00004), Aug 30, 2001: FORK. WORN. NR 4 MLG DOOR FORK WORN.
- [SDR B2O2002F00003](https://openairdocs.org/sdr/B2O2002F00003), Aug 30, 2001: FORK. WORN. NR 3 MLG DOOR FORK WORN.
- [SDR B2O2002F00002](https://openairdocs.org/sdr/B2O2002F00002), Aug 30, 2001: BUSHING. WORN. NR 3 MLG DOOR BUSHING WORN. REMOVED AND REPLACED.
- [SDR B2O2002F00001](https://openairdocs.org/sdr/B2O2002F00001), Aug 30, 2001: SHAFT. WORN. SHAFT AT GEAR DOOR, CHANGED SHAFT NR 4 GEAR DOOR.
- [SDR B202002F00004](https://openairdocs.org/sdr/B202002F00004), Aug 30, 2001: BUSHING. WORN. NR 2 ENGINE COWL FLAP BUSHING WORN, REPACED WITH NEW. .
- [SDR B2O2002F00000](https://openairdocs.org/sdr/B2O2002F00000), Aug 30, 2001: BUSHING. WORN. BUSHING AT COWL FLAP, NR 4 ENGINE CHANGED NR 2 AND NR 4 OUTBOARD COWL BUSHING.
- [SDR B202002F00003](https://openairdocs.org/sdr/B202002F00003), Aug 30, 2001: BULB. BURNED OUT. MAIN LANING GEAR LIGHT BURNED OUT. CHANGED BURNED OUT LIGHT BULB.
- [SDR B202002F00002](https://openairdocs.org/sdr/B202002F00002), Aug 30, 2001: WIRE. BROKEN. TACH GENERATOR WIRE BROKE WHERE CONNECTOR PLUG PLUGS IN.
- [SDR 2001F00310](https://openairdocs.org/sdr/2001F00310), Aug 8, 2001: ENGINE. MAKING METAL. FOUND METAL CONTAMINATION. (M)
- [SDR 2001F00303](https://openairdocs.org/sdr/2001F00303), Aug 6, 2001: COIL. FAULTY. LEFT MAG NR 4 ROUGH ON PARKING CHECK. COIL WAS BAD AND IT WAS REPLACED. (M)
- [SDR 2001F00304](https://openairdocs.org/sdr/2001F00304), Jul 30, 2001: CAP SEAL. LEAKING. PIN CAP SEAL WAS LEAKING. PIN CAP SEAL WAS CHANGED.
- [SDR 2001F00308](https://openairdocs.org/sdr/2001F00308), Jul 28, 2001: LEAD. WORN. HIGH TENSION LEAD WORN. (M)
- [SDR 2001F00309](https://openairdocs.org/sdr/2001F00309), Jul 25, 2001: PIN. LOOSE. THE PIN ON THE TACH NEEDED RESOLDERD. OPS CHECK GOOD. (M)
- [SDR 2001F00323](https://openairdocs.org/sdr/2001F00323), Jul 16, 2001: COIL. DAMAGED. MATTER FROM INSIDE THE COIL WAS LEAKING OUT CAUSING ELECTRICITY TO RUN ELSEWHERE, NOT THROUGH COIL. (M)
- [SDR 2001F00322](https://openairdocs.org/sdr/2001F00322), Jul 13, 2001: STUD. BROKEN. CYLINDER STUDS BROKE. CHANGED CYLINDER AND ALL STUDS ON THAT CYLINDER. (M)
- [SDR 2001F00320](https://openairdocs.org/sdr/2001F00320), Jul 5, 2001: GASKET. LEAKING. CHANGED A FEW ROCKER GASKETS ON ALL ENGINES FOR LEAKING. (M)
- [SDR 2001F00318](https://openairdocs.org/sdr/2001F00318), Jul 5, 2001: BRAKE. WORN. FOUND BRAKE WORN, NEED OVH. NO MORE ADJUSTMENT. (M)
- [SDR 2001F00317](https://openairdocs.org/sdr/2001F00317), Jul 5, 2001: TIRE. WORN. FOUND TIRE OUT OF LIMITS. (M)
- [SDR 2001F00316](https://openairdocs.org/sdr/2001F00316), Jul 5, 2001: TRANSMITTER. RUPTURED. NR 4 ENGINE RUPTURED DIAPHRAM. (M)
- [SDR 2001F00315](https://openairdocs.org/sdr/2001F00315), Jul 5, 2001: VALVE. LEAKING. LEAK AT SURGE PROTECTION VALVE. (M)
- [SDR 2001F00307](https://openairdocs.org/sdr/2001F00307), Jul 5, 2001: CELL. DISCHARGED. BATTERY HAS DEAD CELL. (M)
- [SDR 2001F00321](https://openairdocs.org/sdr/2001F00321), Jul 2, 2001: CAP SEAL. LEAKING. CHANGED A FEW PIN CAP SEALS ON ALL ENGINES FOR LEAKING. (M)
- [SDR 2001F00306](https://openairdocs.org/sdr/2001F00306), May 31, 2001: SEAL. LEAKING. PUSH ROD TUBE SEAL HARD AND BRITTLE, NOT SOFT THIS CAUSING OIL LEAK. REPLACED SEAL WITH A NEW ONE. (M)
- [SDR 2001F00305](https://openairdocs.org/sdr/2001F00305), May 31, 2001: PUMP. FAILED. HYD PUMP HAD SEAL FAILURE. SHAFT SEAL FAILED. (M)
- [SDR 20010416CW008](https://openairdocs.org/sdr/20010416CW008), Feb 16, 2001: TACH GENERATOR. INOPERATIVE. BROKEN WIRE WHERE CONNECTOR PLUG CONNECTS.
- [SDR 20010416CW004](https://openairdocs.org/sdr/20010416CW004), Feb 16, 2001: MOTOR. WEAK. BENCHED GOOD, BUT WAS NOT STRONG ENOUGH WITH A LOAD.
- [SDR 20010416CW003](https://openairdocs.org/sdr/20010416CW003), Feb 13, 2001: MAGNETO. FAILED. FOUND COIL BURNED OUT. BURNED ELECTRIC SMELL.
- [SDR 20010416CW005](https://openairdocs.org/sdr/20010416CW005), Feb 12, 2001: CYLINDER. WORN. VALVE CHECK SHOWS EXCESS WOBBLE IN EX GUIDE.
- [SDR 20010226CW002](https://openairdocs.org/sdr/20010226CW002), Jan 29, 2001: STARTER. INOPERATIVE. WOULD NOT TURN ENGINE OVER, INOPERATIVE.
- [SDR 20010226CW001](https://openairdocs.org/sdr/20010226CW001), Jan 28, 2001: CYLINDER. DAMAGED. VALVE CHECK SHOWS EXCESS WOBLE IN EX GUIDE.
- [SDR 20010226CW005](https://openairdocs.org/sdr/20010226CW005), Jan 23, 2001: BULB. BURNED OUT. BULB BURNED OUT.
- [SDR 20010226CW004](https://openairdocs.org/sdr/20010226CW004), Jan 23, 2001: FABRIC. DAMAGED. RUDDER WAS BEYOND PATCHING. NEEDS RECOVER.
- [SDR 20010226CW003](https://openairdocs.org/sdr/20010226CW003), Jan 23, 2001: SKIN. DAMAGED. WEAR AND TEAR FROM GRAVEL STRIPS, NEED NEW SKINS. BEARING IN PORK CHOPS WERE CHANGED EVEN IF NOT NEEDED.
- [SDR 20010124CW011](https://openairdocs.org/sdr/20010124CW011), Dec 13, 2000: DIAPHRAGM. CRACKED. DIAPHRAGM STILL SOFT , NOT HARD, BUT CRACKED.
- [SDR 20010122CW008](https://openairdocs.org/sdr/20010122CW008), Dec 12, 2000: CONNECTOR. DAMAGED. WAS ERATIC, FOUND LOOSE PIN AT CONNECTOR PLUG.
- [SDR 20010122CW007](https://openairdocs.org/sdr/20010122CW007), Dec 12, 2000: BEARING. FAILED. APPEARS TO BE A BEARING FAILURE.

All 54: https://openairdocs.org/model/douglas-c54b-dc/reports.md

## STCs that may be installed (OpenAirDocs) (15)

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 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 SA3254WE](https://openairdocs.org/stc/SA3254WE): Nose wheel installation. United Aeronautical Corporation
- [STC ST334CH](https://openairdocs.org/stc/ST334CH): Installation of Superflite 102 fabric. Aviation Products Systems Inc
- [STC SA1-115](https://openairdocs.org/stc/SA1-115): Installation of Chamberlain 1012 Series radomes. Saint-Gobain Performance Plastics Corp
- [STC SA1-507](https://openairdocs.org/stc/SA1-507): 2012X Series radomes. Saint-Gobain Performance Plastics Corp
- [STC SA8075SW](https://openairdocs.org/stc/SA8075SW): Installation of fiberglass covering. (M-62 SERIES PT-19) (G-73 SCHWEIZER). Razorback Fabrics Inc
- [STC SA1365GL](https://openairdocs.org/stc/SA1365GL): Surrendered and incorporated into STC ST334CH. Cooper Aviation Supply Company, Inc
- [STC SA3173WE](https://openairdocs.org/stc/SA3173WE): Installation of P&WA R-2000-6 engines in Douglas C54 airplanes. Globe Air, Inc
- [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 SA3185WE](https://openairdocs.org/stc/SA3185WE): New enlarged 12 ft cargo door, new cargo floor, structural cargo crash barrier, mod FS 260 bulkhead, relocated main elec junction box, partially new DC elec distribution and control system, DC-6 wheels and brakes, misc changes for cargo operations. Consulting Aerospace Engineers Inc
- [STC SA1465CE](https://openairdocs.org/stc/SA1465CE): Restricted category tanker conversion. Central Air Services
- [STC SA3199WE](https://openairdocs.org/stc/SA3199WE): Cargo handling system installation. Pemco Engineers, Inc
- [STC SA3-258](https://openairdocs.org/stc/SA3-258): C-O-Two visual smoke detector, Type A1-V, P/N 74800. Northwest Airlines Inc

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