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  2. Main line (railway) - Wikipedia

    en.wikipedia.org/wiki/Main_line_(railway)

    British main lines railway diagram. The main line, or mainline in American English, of a railway is a track that is used for through trains or is the principal artery of the system [1] [2] [3] from which branch lines, yards, sidings, and spurs are connected.

  3. Aircraft gross weight - Wikipedia

    en.wikipedia.org/wiki/Aircraft_gross_weight

    The difference between the maximum taxi/ramp weight and the maximum take-off weight (maximum taxi fuel allowance) depends on the size of the aircraft, the number of engines, APU operation, and engines/APU fuel consumption, and is typically assumed for 10 to 15 minutes allowance of taxi and run-up operations.

  4. Honeywell auxiliary power unit - Wikipedia

    en.wikipedia.org/wiki/Honeywell_auxiliary_power_unit

    In 2018 Honeywell had a 65% share of the airliner APU market and is the sole supplier for the Airbus A350, the Boeing 777 and single-aisle airliners: the Boeing 737 MAX, Airbus A220 (formerly Bombardier CSeries), Comac C919, Irkut MC-21 and Airbus A320neo after Airbus removed the Hamilton Sundstrand APS3200 option.

  5. Boeing 307 Stratoliner - Wikipedia

    en.wikipedia.org/wiki/Boeing_307_Stratoliner

    The Boeing Model 307 Stratoliner (or Strato-Clipper in Pan American service, or C-75 in USAAF service) is an American stressed-skin four-engine low-wing tailwheel monoplane airliner derived from the B-17 Flying Fortress bomber, which entered commercial service in July 1940.

  6. Douglas DC-6 - Wikipedia

    en.wikipedia.org/wiki/Douglas_DC-6

    The Douglas DC-6 is a piston-powered airliner and cargo aircraft built by the Douglas Aircraft Company from 1946 to 1958. Originally intended as a military transport near the end of World War II, Douglas reworked it after the war to compete with the Lockheed Constellation in the long-range commercial transport market.

  7. Fixed Budget vs. Flexible Budget: What’s the Difference and ...

    www.aol.com/fixed-budget-vs-flexible-budget...

    When looking at the differences between a fixed budget and flexible budget, it is important to know the pros and cons. Here’s a look at the advantages and disadvantages of a fixed budget.

  8. Boeing 727 - Wikipedia

    en.wikipedia.org/wiki/Boeing_727

    This allows six-abreast seating (three per side) and a single aisle when 18-inch (46 cm) wide coach-class seats are installed. An unusual feature of the fuselage is the 10-inch (25 cm) difference between the lower lobe forward and aft of the wing as the higher fuselage height of the center section was simply retained towards the rear.

  9. Douglas DC-7 - Wikipedia

    en.wikipedia.org/wiki/Douglas_DC-7

    Northwest Airlines Flight 292, a DC-7C (N285) with 7 crew and 95 passengers, [29] made a successful water landing in Sitka Sound just before 1 p.m. local time after struggling with propeller problems for 45 minutes [30] while operating as a military charter flight between McChord Air Force Base and Elmendorf Air Force Base. The plane stayed ...