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Missouri Pacific EMC AA No. 7100, the "Delta Eagle." (EMD Photo)

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Missouri Pacific EMC AA No. 7100 Delta Eagle passenger train. (MP Photo)

Missouri Pacific EMC AA No. 7100 Delta Eagle passenger train. (MP Photo)

Missouri Pacific EMC AA No. 7100, the Delta Eagle.
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EMC AA Diesel Locomotive
AA was a designation used for several different diesel locomotive types custom built by Electro-Motive Corporation with passenger or baggage space in the same body.

One such was a single locomotive built for the Missouri Pacific Railroad, delivered in August 1940, numbered No. 7100. MP 7100 was built for service with the Delta Eagle passenger train, which ran between Memphis, Tennessee and Tallulah, Louisiana, and also the Dixie Eagle.

Since the two-car train the unit would have to haul was comparatively light, the AA was built with only one 1,000 hp EMD 567 V12 prime mover, and a baggage compartment where the second diesel would have been.

Other EMC locomotives carrying the AA designation include the Pioneer Zephyr, Flying Yankee, and General Pershing Zephyr power units.

EMC AA Overview

Type and origin
Power type: Diesel-electric
Builder: Electro-Motive Corporation (EMC)
Build date: August 1940
Total produced: 1
Specifications
AAR wheel arrangement: A1A-3
Gauge: 4 ft 8 1⁄2 in
Weight on drivers: 97,700 lb
Locomotive weight: 247,340 lb
Fuel capacity: 1,200 gallons
Prime mover: EMD 567
Engine type: V12 diesel
Cylinders:12
Performance figures
Maximum speed: 98 mph
Power output: 1,000 hp
Tractive effort: 24,425 lbf at 34 mph
Career
Operator: Missouri Pacific Railroad
Number: 7100
Retired: 1962
Disposition: Scrapped

See also:

List of EMC-EMD Diesel Locomotives

EMC-EMD

Missouri Pacific

Pioneer Zephyr

Flying Yankee

General Pershing Zephyr

Diesel-Electric Locomotives

Locomotives