Kreider-Reisner XC-31

XC-31
XC-31
General information
Type	Single-engine transport
National origin	United States
Manufacturer	Kreider-Reisner ; Fairchild Aircraft
Primary user	United States Army Air Corps
Number built	1
History
First flight	September 22, 1934

Last updated November 09, 2025

The Kreider-Reisner XC-31 or Fairchild XC-31 was an American single-engined monoplane transport aircraft of the 1930s designed and built by Kreider-Reisner. It was one of the last fabric-covered aircraft tested by the U.S. Army Air Corps.^[1] Designed as an alternative to the emerging twin-engined transports of the time such as the Douglas DC-2, it was evaluated by the Air Corps at Wright Field, Ohio, under the test designation XC-941,^[1] but rejected in favor of all-metal twin-engined designs.

The XC-31 was built with an aluminum alloy framework covered by fabric, and featured strut-braced wing and fully retractable landing gear, with the main gear units mounted on small wing-like stubs and retracting inwards. An additional novel feature was the provision of main cargo doors that were parallel with the ground to facilitate loading.

Following evaluation by the USAAC, the XC-31 was transferred to NACA, which used it for icing studies at its Langley Research Center.^[2]

Specifications

Data from ,^[1]^[2]

General characteristics

Crew: 1 (Pilot)
Capacity: 15 passengers or 3,500 pounds (1,600 kg) of cargo
Length: 55 ft 5 in (16.89 m)
Wingspan: 75 ft 0 in (22.86 m)
Height: 15 ft 10 in (4.83 m)
Wing area: 802 sq ft (74.5 m²)
Empty weight: 7,322 lb (3,321 kg)
Gross weight: 12,750 lb (5,783 kg)
Powerplant: 1 × Wright R-1820-25 radial , 750 hp (559 kW)

Performance

Maximum speed: 154 mph (248 km/h, 134 kn)
Cruise speed: 143 mph (230 km/h, 124 kn)
Range: 775 mi (1,247 km, 673 nmi)
Service ceiling: 15,000 ft (4,570 m)

References

1 2 3 "Kreider-Reisner XC-31 Fact Sheet". Online Aircraft Features. National Museum of the US Air Force. Archived from the original on 27 September 2013. Retrieved 14 July 2017.
1 2 "Fairchild Model XC-31 Cargo Transport". History of Airplanes. acepilots.com. Archived from the original on 16 January 2010. Retrieved 2 April 2010.

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[USAF_Museum-1] 1 2 3 "Kreider-Reisner XC-31 Fact Sheet". Online Aircraft Features. National Museum of the US Air Force. Archived from the original on 27 September 2013. Retrieved 14 July 2017.

[Ace-2] 1 2 "Fairchild Model XC-31 Cargo Transport". History of Airplanes. acepilots.com. Archived from the original on 16 January 2010. Retrieved 2 April 2010.

[1]

[2]

v t e United States military transport aircraft designations, Army/Air Force and Tri-Service systems
Army/Air Force sequence (1925–1962)	C-1 C-2 C-3 C-4 C-5 C-6 C-7 C-8 C-9 C-10 C-11 C-12 C-13¹ C-14 C-15 C-16 C-17 C-18 C-19 C-20 C-21 C-22 C-23 C-24 C-25 C-26 C-27 C-28 C-29 C-30 C-31 C-32 C-33 C-34 C-35 C-36 C-37 C-38 C-39 C-40 C-41 C-41A C-42 C-43 C-44 C-45 C-46 C-47 C-47F C-47T AC-47 C-48 C-49 C-50 C-51 C-52 C-53 C-54 C-55 C-56 C-57 C-58 C-59 C-60 C-61 C-62 C-63 C-64 C-65 C-66 C-67 C-68 C-69 C-70 C-70B C-71 C-72 C-73 C-74 C-75 C-76 C-77 C-77B–D C-78 C-79 C-80 C-81 C-82 C-83 C-83A C-83B C-84 C-85 C-86 C-87 C-88 C-89 C-90 C-91 C-92 C-93 C-94 C-95 C-96 C-97 KC-97 C-98 C-99 C-100 C-101 C-102 C-103 C-104 C-105 C-106 C-107 C-108 C-109 C-110 C-111 C-112 C-113 C-114 C-115 C-116 C-117 C-117D C-118 C-119 AC-119 C-120 C-121 C-121F EC-121 C-122 C-123 C-123A C-124 C-125 C-126 C-127² DHC C-127 Douglas C-127 C-128 C-129 C-130 C-130J AC-130 DC-130 EC-130/H HC-130 KC-130 LC-130 MC-130 WC-130 C-131 NC-131H C-132 C-133 C-134 C-135 KC-135 C-136 C-137² Boeing YC-137 DHC YC-137 C-137 C-138¹ C-139¹ C-140 C-141 C-142
Tri-service sequence (1962–present)	C-1 C-2 C-3 C-4 C-5 C-6 C-7² C-7 RC-7 C-8 C-9 C-10² C-10 KC-10 C-11 C-12 RC-12 C-13¹ C-14 C-15 C-16¹ C-17 C-18 C-19 C-20² C-20A–D C-20F–J C-21 C-22 C-23 C-24 C-25 C-26 C-27 C-27J C-28 C-29 C-30¹ C-31 C-32 C-33 C-34¹ C-35 C-36 ³ C-37 C-37B C-38 C-39¹ C-40 C-41 C-42¹ C-43¹ C-44¹ C-45 C-46
Revived original sequence (2005–present)	C-143 C-144 C-145 C-146 C-147
Non-sequential designations	C-767 C-880
Related designations	CT-39 CT-43 CV-2 CV-7
¹ Not assigned •² Assigned to multiple types •³ Unconfirmed

Kreider-Reisner XC-31

Contents

Specifications

See also

References

v t e Wright Field project numbers (1930–1934)
XP-900 XB-901 XP-902 XP-903 XP-904 905¹ XB-906 XB-907 XB-908 XC-909 XC-910 XO-911 XPT-912 XPT-913 XPT-914 XPT-915 916¹ XB-917 XC-918 919¹ XC-920 XB-921 922¹ XP-923 XO-924 XP-925 XO-926 XP-927 XC-928 XP-929 XPT-930 XPT-931 XO-932 XPT-933 XP-934 XBT-935 XP-936 XBT-937 XP-938 XO-939 XP-940 XC-941 XC-942 XPT-943 XP-944 XPT-945 946¹ 947¹ XP-948 949¹ XB-950
¹ Not assigned