page_title: Aerial Service Mercury Senior
section_title: Specifications (night flight configuration)
hierarchical_section_title: Aerial Service Mercury Senior / Specifications (night flight configuration)
caption_attribution_description: English: Mercury Senior 3-view drawing from L'Aéronautique March,1927
context_page_description: The Aerial Service Mercury Senior, Aerial Mercury Senior or just Mercury Senior was a US biplane mailplane designed to operate at night between New York City and Chicago. A different, smaller, lower wing improved its performance for daytime flights. One was built and used by the United States Post Office Department.
context_section_description: Data from Les Ailes, July 1925
  General characteristics
  Crew: one
  Length: 28 ft 7 in (8.70 m)
  Upper wingspan: 43 ft 0 in (13.10 m)
  Lower wingspan: 48 ft 0 in (14.64 m) (33 ft 4 in (10.17 m) in day configuration)
  Height: 11 ft 4 in (3.46 m)
  Wing area: 597.4 sq ft (55.50 m²) (467.2 sq ft (43.40 m²) in day configuration)
  Empty weight: 3,638 lb (1,650 kg) (3,494 lb (1,585 kg) in day configuration
  Gross weight: 5,512 lb (2,500 kg) (5,360 lb (2,430 kg) in day configuration)
  Powerplant: 1 × Liberty L-12 water-cooled V12, 400 hp (300 kW)
  Propellers: 2-bladed metal Curtiss
  Performance
  Maximum speed: 126 mph; 109 kn (202 km/h) (135 mph; 118 kn (218 km/h) in day configuration)
  Cruise speed: 110 mph; 96 kn (177 km/h) (115 mph; 100 kn (185 km/h)) in day configuration)
  Range: 497 mi; 432 nmi (800 km) at cruising speed (560 mi (900 km) in day configuration)
  Service ceiling: 16,000 ft (5,000 m) (14,960 ft (4,560 m) in day configuration)
  Wing loading: 9.3 lb/sq ft (45.4 kg/m²) (11.5 lb/sqft (56 kg/m²)) in day configuration)
  Minimum speed: 52 mph; 45 kn (84 km/h) (57 mph; 50 kn (92 km/h) in day configuration)
caption: Mercury Senior 3-view L'Aéronautique March,1927
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