Table 4: Fuel Productivity and Efficiency of Passenger Aircraft by Number of Jet Engines - Legacy and Low Cost Carriers
| Two-engine | Three-engine | Four-/six-engine | |
|---|---|---|---|
| Fuel productivity (available seat miles per gallon*) | |||
| 2000 | 56.0 | 43.1 | 54.1 |
| 2010 | 65.8 | N/A | 58.7 |
| Fuel efficiency (gallons per block hour*) | |||
| 2000 | 1001.2 | 1755.2 | 3469.3 |
| 2010 | 982.8 | N/A | 3312.5 |
KEY: N/A = No three-engine passenger aircraft used by selected carriers.
* Includes all scheduled and nonscheduled flights on passenger aircraft.
NOTE: Data in all quarters of 2000 and 2010 included. Legacy carriers include: American Airlines, Continental Airlines, Delta Air Lines, United Airlines, and US Airways. TWA, Northwest, and America West included as these carriers merged with American Airlines, Delta, and US Airways respectively. Low cost carriers include: JetBlue Airways, Frontier Airlines, AirTran Airways, Spirit Airlines, and Southwest Airlines. P5.2 data is used to for Q4 2010 fuel use data.
SOURCE: U.S. Department of Transportation, Research and Innovative Technology Administration, Bureau of Transportation Statistics, Form 41 Traffic Data T2 (U.S. Carriers) and Form 41 Financial Data Schedule P5.2 as of July 11, 2011.