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MD-90 McDonnell Douglas
(now Boeing)
MD-90
Medium-Range Jetliner

DESCRIPTION:
Beginning life as the DC-9 Super 90, the MD-90 became the third generation of the Douglas twin-jet family, following the highly successful DC-9 and MD-80. The MD-90 was originally envisioned as a high-tech alternative to the earlier designs featuring very fuel efficient engines known as propfans. However, the drop in oil prices of the 1980s resulted in weak interest in these new technology engines, so McDonnell Douglas abandoned them in favor of more conventional turbofan engines.
Otherwise, the MD-90 is largely similar to the MD-80 it replaced, using the same basic fuselage, wing, and flight deck. However, the flight deck was updated with an improved electronic flight instrument system and other avionics plus new environmental control systems, hydraulic systems, and passenger comfort features. In addition, the new V2500 turbofan engines offered much improved fuel efficiency and noise emissions.
Only two versions of the MD-90 entered production, the standard Series 30 and the extended range MD-90-30ER. Smaller Series 10 and lengthened Series 50 variants were also proposed but not developed. Although interest in the MD-90 family was strong, the fate of the design was sealed when McDonnell Douglas was purchased by Boeing. Since the MD-90 competed directly with Boeing's 737, the production line was closed. As a result, the MD-90 is a rather rare sight at world airports since only 117 were built beween 1995 and 2000.
Last modified 29 July 2008

HISTORY:

First Flight 22 February 1993

Service Entry

1 April 1995 (with Delta Airlines)

CREW: 2 flight crew

PASSENGERS: 153 in two classes, 172 in one class

ESTIMATED COST:

unknown

AIRFOIL SECTIONS:

Wing Root DSMA-433A/-434A

Wing Tip

DSMA-435A/-436A

DIMENSIONS:

Length 152.50 ft (46.52 m)

Wingspan 107.67 ft (32.87 m)

Height 30.92 ft (9.42 m)

Wing Area 1,209 ft² (112.3 m²)

Canard Area

not applicable

WEIGHTS:

Empty 86,590 lb (39,275 kg)

Typical Load unknown

Max Takeoff (MD-90-30) 156,000 lb (70,760 kg)
(MD-90-50) 172,000 lb (78,245 kg)

Fuel Capacity internal:
(MD-90-30) 5,840 gal (22,100 L)
(MD-90-50) 7,620 gal (28,845 L)
external: not applicable

Max Payload

unknown

PROPULSION:

Powerplant (MD-90-30) two International Aero V2525-D5 turbofans
(MD-90-50) two International Aero V2528-D5 turbofans

Thrust (MD-90-30) 50,000 lb (222.42 kN)
(MD-90-50) 56,000 lb (249.11 kN)

PERFORMANCE:

Max Level Speed at altitude: unknown
at sea level: unknown
cruise speed: 505 mph (810 km/h) at 35,000 ft (10,680 m), Mach 0.76

Initial Climb Rate unknown

Service Ceiling unknown

Range (MD-90-30) 2,080 nm (3,860 km)
(MD-90-50) 2,785 nm (5,160 km)

g-Limits unknown

KNOWN VARIANTS:

MD-90 Series 30 Initial production model intended to replace the MD-83; 113 built

MD-90-30ER Extended range model based on Series 30 with additional fuel tanks in the forward cargo hold and strengthened wing structure for operation at higher gross weights; 3 built

MD-90-30IGW Increased Gross Weight variant of the Series 30 with strengthened wing structure and landing gear; 1 built

MD-90-30T Trunkliner Proposed 147-passenger model with dual main landing gear for operation from rough airfields, was to have been built by Shanghai Aviation Industrial Corporation for Chinese operators; cancelled

MD-90 Series 10 Proposed shortened fuselage model to carry reduced passenger loads of 111 to 116, intended to replace the MD-87; cancelled

MD-90 Series 40 Proposed stretched model for up to 181 passengers; cancelled

MD-90-40EC Proposed Series 40 variant with increased payload and fuel capacity for European operators; cancelled

MD-90 Series 50 Proposed extended range model with additional fuel capacity and increased gross takeoff weight; cancelled

MD-90-55 Similar to Series 50 but with revised cabin layout making room for up to 187 passengers; cancelled

KNOWN OPERATORS: Air Aruba
AMC Aviation
American Airlines
Astraeus Airlines
China Eastern Airlines
China Northern Airlines
Delta Airlines
Japan Air System
Pacific Airlines
SAS Scandanavian Airlines
Saudi Arabian Airlines
Uni Air

3-VIEW SCHEMATIC:

MD-90

SOURCES:

Aboulafia, Richard. Jane's Civil Aircraft. Glasgow: Harper Collins Publishers, 1996, p. 84-85, McDonnell Douglas MD-90.

Boeing MD-90 site

Donald, David, ed. The Complete Encyclopedia of World Aircraft. NY: Barnes & Noble, 1997, p. 616, McDonnell Douglas MD-90.

Donald, David, ed. The Encyclopedia of Civil Aircraft. San Diego, CA: Thunder Bay Press, 1999, p. 628-634, MD-80 and MD-90 Family.

Taylor, Michael. Brassey's World Aircraft & Systems Directory 1996/1997. London: Brassey's, 1996, p. 280-281, McDonnell Douglas MD-90 series.

Taylor, Michael J. H. Brassey's World Aircraft & Systems Directory 1999/2000. London: Brassey's, 1999, p. 261-262, Boeing (McDonnell Douglas) MD-90 series.

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DESCRIPTION: Beginning life as the DC-9 Super 90, the MD-90 became the third generation of the Douglas twin-jet family, following the highly successful DC-9 and MD-80. The MD-90 was originally envisioned as a high-tech alternative to the earlier designs featuring very fuel efficient engines known as propfans. However, the drop in oil prices of the 1980s resulted in weak interest in these new technology engines, so McDonnell Douglas abandoned them in favor of more conventional turbofan engines. Otherwise, the MD-90 is largely similar to the MD-80 it replaced, using the same basic fuselage, wing, and flight deck. However, the flight deck was updated with an improved electronic flight instrument system and other avionics plus new environmental control systems, hydraulic systems, and passenger comfort features. In addition, the new V2500 turbofan engines offered much improved fuel efficiency and noise emissions. Only two versions of the MD-90 entered production, the standard Series 30 and the extended range MD-90-30ER. Smaller Series 10 and lengthened Series 50 variants were also proposed but not developed. Although interest in the MD-90 family was strong, the fate of the design was sealed when McDonnell Douglas was purchased by Boeing. Since the MD-90 competed directly with Boeing's 737, the production line was closed. As a result, the MD-90 is a rather rare sight at world airports since only 117 were built beween 1995 and 2000. Last modified 29 July 2008
HISTORY:
First Flight	22 February 1993
Service Entry	1 April 1995 (with Delta Airlines)
CREW:	2 flight crew
PASSENGERS:	153 in two classes, 172 in one class
ESTIMATED COST:	unknown
AIRFOIL SECTIONS:
Wing Root	DSMA-433A/-434A
Wing Tip	DSMA-435A/-436A
DIMENSIONS:
Length	152.50 ft (46.52 m)
Wingspan	107.67 ft (32.87 m)
Height	30.92 ft (9.42 m)
Wing Area	1,209 ft² (112.3 m²)
Canard Area	not applicable
WEIGHTS:
Empty	86,590 lb (39,275 kg)
Typical Load	unknown
Max Takeoff	(MD-90-30) 156,000 lb (70,760 kg) (MD-90-50) 172,000 lb (78,245 kg)
Fuel Capacity	internal: (MD-90-30) 5,840 gal (22,100 L) (MD-90-50) 7,620 gal (28,845 L) external: not applicable
Max Payload	unknown
PROPULSION:
Powerplant	(MD-90-30) two International Aero V2525-D5 turbofans (MD-90-50) two International Aero V2528-D5 turbofans
Thrust	(MD-90-30) 50,000 lb (222.42 kN) (MD-90-50) 56,000 lb (249.11 kN)
PERFORMANCE:
Max Level Speed	at altitude: unknown at sea level: unknown cruise speed: 505 mph (810 km/h) at 35,000 ft (10,680 m), Mach 0.76
Initial Climb Rate	unknown
Service Ceiling	unknown
Range	(MD-90-30) 2,080 nm (3,860 km) (MD-90-50) 2,785 nm (5,160 km)
g-Limits	unknown
KNOWN VARIANTS:
MD-90 Series 30	Initial production model intended to replace the MD-83; 113 built
MD-90-30ER	Extended range model based on Series 30 with additional fuel tanks in the forward cargo hold and strengthened wing structure for operation at higher gross weights; 3 built
MD-90-30IGW	Increased Gross Weight variant of the Series 30 with strengthened wing structure and landing gear; 1 built
MD-90-30T Trunkliner	Proposed 147-passenger model with dual main landing gear for operation from rough airfields, was to have been built by Shanghai Aviation Industrial Corporation for Chinese operators; cancelled
MD-90 Series 10	Proposed shortened fuselage model to carry reduced passenger loads of 111 to 116, intended to replace the MD-87; cancelled
MD-90 Series 40	Proposed stretched model for up to 181 passengers; cancelled
MD-90-40EC	Proposed Series 40 variant with increased payload and fuel capacity for European operators; cancelled
MD-90 Series 50	Proposed extended range model with additional fuel capacity and increased gross takeoff weight; cancelled
MD-90-55	Similar to Series 50 but with revised cabin layout making room for up to 187 passengers; cancelled
KNOWN OPERATORS:	Air Aruba AMC Aviation American Airlines Astraeus Airlines China Eastern Airlines China Northern Airlines Delta Airlines Japan Air System Pacific Airlines SAS Scandanavian Airlines Saudi Arabian Airlines Uni Air
3-VIEW SCHEMATIC:
SOURCES: Aboulafia, Richard. Jane's Civil Aircraft. Glasgow: Harper Collins Publishers, 1996, p. 84-85, McDonnell Douglas MD-90. Boeing MD-90 site Donald, David, ed. The Complete Encyclopedia of World Aircraft. NY: Barnes & Noble, 1997, p. 616, McDonnell Douglas MD-90. Donald, David, ed. The Encyclopedia of Civil Aircraft. San Diego, CA: Thunder Bay Press, 1999, p. 628-634, MD-80 and MD-90 Family. Taylor, Michael. Brassey's World Aircraft & Systems Directory 1996/1997. London: Brassey's, 1996, p. 280-281, McDonnell Douglas MD-90 series. Taylor, Michael J. H. Brassey's World Aircraft & Systems Directory 1999/2000. London: Brassey's, 1999, p. 261-262, Boeing (McDonnell Douglas) MD-90 series.