OUTPUT

The output for Airline business includes;

Aircraft Utilization
Measuring the aircraft productivity by calculating the dividing of aircraft block hours by the number of aircraft days assigned to service on air carrier routes. Typically presented in block hours per day.

Available Seat Miles (ASMs)
A common industry measurement of airline output that refers to one aircraft seat flown one mile, whether occupied or not. An aircraft with 100 passenger seats, flown a distance of 100 miles, generates 10,000 available seat miles. 

Block Hour
Time from the moment the aircraft door closes at departure of a revenue flight until the moment the aircraft door opens at the arrival gate following its landing. Block hours are the industry standard measure of aircraft utilization.

Cost per Available Seat Mile (CASM)
Measure of unit cost in the airline industry. CASM is calculated by taking all of an airline’s operating expenses and dividing it by the total number of available seat miles produced.

Unit Cost per Unit of Output
A measurement that gauges total operating costs in relation to output/results. 

Dependability
This is the measure of an airline’s on-time performance. It includes the following measures:

• D + five (D+5): departures that push back from the gate within five minutes of the scheduled time.
• D + zero (D+0): departures that push back from the gate on time.
• A + 15: arrivals within 15 minutes of the published arrival time.

Form 41 Data
Information derived from airline filings with the Bureau of Transportation Statistics. Airline financial data is filed with the BTS quarterly; traffic and employment numbers are filed monthly.

Load Factor
The number of Revenue Passenger Miles (RPMs) expressed as a percentage of ASMs, either on a particular flight or for the entire system. Load factor represents the proportion of airline output that is actually consumed. To calculate this figure, divide RPMs by ASMs. Load factor for a single flight can also be calculated by dividing the number of passengers by the number of seats. 

Operating Revenue
Revenues received from total airline operations including scheduled and non-scheduled service. Sources of revenue include passenger, cargo, excess baggage and certain other transport related revenue.

Passenger Revenue
Revenue received by the airline from the carriage of passengers in scheduled operations.

Passenger Revenue per Available Seat Mile (PRASM)
Often referred to as a measure of passenger “unit revenue”. It is calculated by dividing passenger revenue by available seat miles. Typically the measure is presented in terms of cents per mile. This measure is equivalent to the product of load factor and yield.

Passenger Yield
Unlike PRASM, the measure of average fare paid per mile, per passenger, calculated by dividing passenger revenue by revenue passenger miles. Typically,  the measure is presented in cents per mile and is useful measure in assessing changes in fares over time. Yield is not useful for comparisons across markets and/or airlines, as it varies dramatically by stage length and does not incorporate load factor.