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C-40 Clipper
A C-40 of squadron VR-59
General information
Type	Military transport aircraft
National origin	United States
Manufacturer	Boeing
Status	Active service
Primary users	United States Navy United States Air Force United States Marine Corps
Number built	28
History
Manufactured	2001–2019
Introduction date	21 April 2001
First flight	April 2000
Developed from	Boeing 737 Next Generation

The Boeing C-40 Clipper is a military version of the Boeing 737 Next Generation used to transport cargo and passengers. It is used by the United States Navy, Air Force, and Marine Corps. The Navy C-40A variant is named "Clipper", whereas the USAF C-40B/C variants are officially unnamed.

Design and development

The C-40 combines the Boeing 737-700 fuselage with the strengthened wings and landing gear of the larger and heavier 737-800. It also has auxiliary fuel tanks allowing an unrefueled range of up to 5,000 nautical miles (9,300 km) compared with 3,010 nmi (5,570 km) for the standard 737-700.

C-40A

First flight took place in April 2000 and the first of the C-40A aircraft entered service in April 2001.

The U.S. Navy Reserve was the first customer for a 737 Next Generation based "combi" aircraft (capable of transporting cargo and passengers). The Clipper was ordered by the U.S. Navy to replace its fleet of aging C-9B Skytrain IIs. The C-40A is the first new logistics aircraft in 17 years to join the U.S. Navy Reserve. The Navy Reserve provides all of the Navy's medium and heavy airlift capabilities. The Clipper meets or exceeds international noise and environmental requirements, which the fleet of Naval Reserve C-9s did not. It is also more fuel-efficient and offers increased range and payload capabilities. The Clipper is certified to operate in an all-passenger (121 passengers), all-cargo or combination ("combi") configuration that can accommodate up to three cargo pallets and 70 passengers on the main deck.

The Navy purchased the airplanes using standard commercial practices, ordering six of the 737-700C models. The first two of four aircraft were delivered on 21 April 2001 to Fleet Logistics Support Squadron Five Nine (VR-59) at the Naval Air Station/Joint Reserve Base Fort Worth, Texas, with two more aircraft following before the end of the year. The fifth and sixth aircraft were delivered in August 2002 to VR-58 at the Naval Air Station Jacksonville, Florida. Further aircraft have been delivered to VR-57 at the Naval Air Station North Island, California. The C-40A provides superior fuel efficiency, range and payload compared to the C-9B aircraft it replaced.

In the 2018 Marine Aviation Plan, the U.S. Marine Corps indicated that it intended to acquire two C-40A aircraft for airlift missions, replacing its Skytrain fleet. On 4 December 2018 an online notice was posted by the Marines seeking a supplier of C-40s to be delivered in 2020. The USMC Skytrains were retired in 2017 and to prepare for the transition to new aircraft, personnel from Marine Transport Squadron One were assigned to operate Navy Clippers until the arrival of their own aircraft.

C-40B

The United States Air Force selected the C-40B, a military version of the 737-700 Boeing Business Jet, to replace the aging fleet of C-137 aircraft used to transport U.S. combatant commanders. The Air Force awarded the medium lift contract in August 2000. The 89th Airlift Wing acquired its first C-40B aircraft in December 2002. Both units are based at Andrews Air Force Base, Maryland. The 15th Airlift Wing, Hickam AFB, Hawaii, acquired its C-40B for U.S. Pacific Command in February 2003. The 86th Airlift Wing, Ramstein AB, Germany, acquired its C-40B for U.S. Air Forces in Europe in December 2004.

The cabin area is equipped with a crew rest area, distinguished visitor compartment with sleep accommodations, two galleys and business class seating with worktables.

The C-40B is designed to be an "office in the sky" for senior military and government leaders. The aircraft features two-way broadband data communications, including secure voice and data communication; elements include internet and network access, telephones, satellites, facsimile and copy machines. The C-40B also has a computer-based passenger data system.

C-40C

The C-40C is a VIP transport aircraft often used to carry members of the Cabinet and Congress, and is intending to replace the Boeing C-22. The aircraft is equipped similarly to the C-40B, but without the advanced communications capabilities. Unique to the C-40C is the capability to change its configuration to accommodate from 42 to 111 passengers. The C-40C replaced three C-22s (a militarized Boeing 727) operated by the Air National Guard and National Guard Bureau to airlift personnel. The C-40C was the first military aircraft to be acquired in this as an off-the-shelf aircraft for the Department of Defense. The 201st Airlift Squadron, District of Columbia Air National Guard acquired two C-40C aircraft in October 2002. The Air Force Reserve 932d Airlift Wing, Scott AFB, Illinois acquired three C-40C aircraft in 2007.

Variants

C-40A Clipper: United States Navy version of the Boeing 737-700 for high-priority cargo and passenger transport, seventeen built.
C-40B: United States Air Force version of the Boeing 737-700 based Boeing Business Jet modified as a special mission aircraft for commanders and government officials, four built.
C-40C: United States Air Force version of the Boeing 737-700 based Boeing Business Jet, operational support and transport aircraft, seven built.

Operators

United States

United States Air Force
United States Navy
- VR-51 – MCAS Kaneohe Bay, Hawaii
- VR-56 – NAS Oceana, Virginia
- VR-57 – NAS North Island, California
- VR-58 – NAS Jacksonville, Florida
- VR-59 – Naval Air Station Joint Reserve Base Fort Worth, Texas
- VR-61 – NAS Whidbey Island, Washington
United States Marine Corps
- VMR-1 – Naval Air Station Joint Reserve Base Fort Worth, Texas

Specifications

Data from

General characteristics

Crew: Four, five or six: Pilot, co-pilot, crew chief and loadmaster, plus one 'second loadmaster' when carrying passengers or two when carrying over 100 passengers
Capacity:
- C-40A passenger configuration: 121 passengers
- C-40A cargo configuration: 8 pallets
- C-40A combination configuration: 3 pallets, 70 passengers
- C-40B: 26 to 32 passengers
- C-40C: 42 to 111 passengers
- Payload: 40,000 lb (18,144 kg)
Length: 110 ft 4 in (33.63 m)
Wingspan: 112 ft 7 in (34.32 m)
Height: 41 ft 2 in (12.55 m)
Airfoil: root: BAC 449/450/451; tip: BAC 442 mod
Empty weight: 126,000 lb (57,153 kg)
Max takeoff weight: 171,000 lb (77,564 kg)
Fuel capacity: 6,875 US gal (26,020 L; 5,725 imp gal)
Powerplant: 2 × CFM International CFM56-7B turbofan engines, 27,300 lbf (121 kN) thrust each

Performance

Maximum speed: 534 kn (615 mph, 989 km/h)
Range: 3,200 nmi (3,700 mi, 5,900 km) (C-40A), 4,500–5,000 nmi (5,200–5,800 mi; 8,300–9,300 km) (C-40B/C)
Service ceiling: 41,000 ft (12,000 m)
Thrust/weight: 0.407

References

"C-40A Clipper". Naval Technology. Retrieved 7 August 2021.
^ Reim, Garrett (5 December 2018). "US Marine Corps looks to buy two C-40 executive transports". FlightGlobal. Archived from the original on 25 April 2019. Retrieved 29 May 2019 – via Flightglobal.com.
^ "C-40B/C > U.S. Air Force > Fact Sheet Display". U.S. Air Force. 4 June 2003. Archived from the original on 17 September 2013. Retrieved 4 June 2003.
^ "C-40A Clipper". Naval Technology. Retrieved 19 January 2020.
^ "Boeing Delivers Ninth C-40A Aircraft to U. S. Navy". Boeing. 5 June 2006. Archived from the original on 29 May 2019. Retrieved 29 May 2019 – via boeing.mediaroom.com.
"Boeing: C-40 Clipper". www.boeing.com. Archived from the original on 15 March 2016. Retrieved 21 March 2016.
"C-40A Product Card" (PDF). www.boeing.com. Boeing. 11 March 2016. Archived (PDF) from the original on 1 April 2016. Retrieved 29 May 2019.
"2018 Marine Aviation Plan" (PDF). U.S. Marine Corps. p. 100. Retrieved 29 May 2019.
Burgess, Richard R. (26 May 2017). "Marines to Fly Navy C-40 Transports While Awaiting their Own". Seapower Magazine. Archived from the original on 16 December 2018. Retrieved 29 May 2019 – via seapowermagazine.org.
"Boeing: C-40 Clipper". Boeing.com. Boeing. Archived from the original on 17 April 2019. Retrieved 29 May 2019.
"1 Airlift Squadron (AMC) > Air Force Historical Research Agency > Display". U.S. Air Force. Archived from the original on 29 May 2019. Retrieved 29 May 2019.
Kelly-Herard, Amber R. (24 August 2010). "Scott squadron flies important passengers around the world". af.mil. US Air Force. Archived from the original on 29 May 2019. Retrieved 29 May 2019.
"C-40 Clipper". Boeing Defense, Space & Security. Retrieved 6 June 2022.
"C-40B/C Fact Sheet". United States Air Force. April 2020. Retrieved 6 June 2022.
Lednicer, David. "The Incomplete Guide to Airfoil Usage". m-selig.ae.illinois.edu. Archived from the original on 26 March 2019. Retrieved 16 April 2019.

External links

C-40A and C-40B pages on Boeing.com
The US Navy – Fact File: C-40A Clipper logistics aircraft, U.S. Naval History C-40A Clipper page
USAF C-40B/C Factsheet
"Clippers Hitting Their Stride Despite Past Controversy". DefenseIndustryDaily.com

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Bombers	YB-9 XB-15 B-17 Y1B-20 B-29 XB-38 XB-39 YB-40 XB-44 B-47 B-50 B-52 B-54 XB-55 XB-56 XB-59 B-1
Piston-engined transports	C-73 C-75 C-97 C-98 XC-105 C-108
Jet transports	C-135 C-137 CC-137 YC-14 C-17 C-22 VC-25 C-32 C-40 CT-43
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Trainers	PT-13 PT-17 PT-18 PT-27 XAT-15 T-43 T-45 T-7
Patrol and surveillance	XPB XPBB XP3B P-8 EC-135 EC-18 E-3 E-4 E-6 E-7 E-8 E-10 E-767
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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-13 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-127 C-127 (I) C-127 (II) 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-137 YC-137 (I) YC-137 (II) C-137 C-138 C-139 C-140 C-141 C-142
Tri-service sequence (1962–present)	C-1 C-2 C-3 C-4 C-5 C-6 C-7 C-7 RC-7 C-8 C-9 C-10 C-10 KC-10 C-11 C-12 RC-12 C-13 C-14 C-15 C-16 C-17 C-18 C-19 C-20 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-30 C-31 C-32 C-33 C-34 C-35 C-36 C-37 C-37B C-38 C-39 C-40 C-41 C-42 C-43 C-44 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
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Not assigned • Assigned to multiple types • Unconfirmed

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Army One Air Force One Navy One Marine One Coast Guard One Space Force One Executive One
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89th Airlift Wing VC-25 C-32 C-40 HMX-1 VH-1N VH-3A/D VH-34D VH-60N VH-92 Transportation of the president of the United States White House Transportation Agency

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