part 1 of the workbook assignment includes the sections on block times taxi in taxi out flight times and total block times and turnaround times 1
Aircraft Scheduling Workbook
AVIA 3120
Fleet Planning and Scheduling
Part 1 Assignment
Spring 2018
Scheduling Workbook Part 1 Instructions
Part 1 of the Workbook assignment includes the sections on Block Times (Taxi In, Taxi Out, Flight Times and Total Block Times) and Turnaround Times.
For the Block Time exercises, complete and submit your responses to any area which is shaded in yellow.
For the Turnaround Time exercises, complete and submit your responses to any area which is shaded yellow, green or blue.
Submit your work as a Word document in one (1) file to the Dropbox no later than Friday, April 13th at 11:55pm.
Block Time Exercises
Determine the average Taxi Out times:
|
Taxi Out Flight 1 |
Taxi Out Flight 2 |
Taxi Out Flight 3 |
Taxi Out Flight 4 |
Average Taxi Out |
|
10 |
15 |
10 |
7 |
10.5 |
|
11 |
11 |
13 |
9 |
|
|
8 |
8 |
8 |
4 |
|
|
9 |
10 |
11 |
12 |
Determine the average Taxi In times:
|
Taxi In Flight 1 |
Taxi In Flight 2 |
Taxi In Flight 3 |
Taxi In Flight 4 |
Average Taxi In |
|
5 |
6 |
6 |
5 |
5 |
|
6 |
6 |
6 |
6 |
|
|
7 |
7 |
6 |
8 |
|
|
4 |
6 |
8 |
6 |
Determine the average Flight Times:
|
Aircraft Type |
Avg Flight Profile Speed (MPH) |
City Pair Distance (Miles) |
Flight Time (Hours) |
Flight Time (Minutes) |
|
A1A |
375 |
750 |
2 |
120 |
|
B2B |
400 |
1200 |
3 |
|
|
C3C |
355 |
575 |
1.62 |
|
|
D4D |
330 |
675 |
2.05 |
Determine the Block Times:
|
Taxi In |
Taxi Out |
Flight Time in Hours |
Flight Time in Minutes |
Block Time in Minutes |
|
5 |
6 |
2.2 |
132 |
143 |
|
6 |
9 |
3.7 |
222 |
|
|
7 |
11 |
.75 |
45 |
|
|
4 |
8 |
1.9 |
114 |
Minimum Turnaround Time Exercises
In the workbook, there are 4 exercises that require you to estimate the elapsed time it will take the ground crew to unload, clean and reload the aircraft for its’ next flight(“turnaround timeâ€). There are also several examples to help you understand how the sequence of ground servicing works during a turnaround.
Study the examples to learn what activities take place inside the aircraft and which activities are occurring outside of the aircraft. Think in terms of production line where various work is taking place simultaneously in different parts of the factory but all components have to come together to produce the final product.
One of the concepts you will have to consider in these exercises is that of simultaneous or “concurrent†activities. I recognize most, if not all, of the class has no airline experience which would help you to know which activities can be done simultaneously. However, I suspect most everyone has flown at some point so you have some idea of how the turnaround process works.
In concurrent, or simultaneous, work, think about which activities can be accomplished at the same time. As an example, passengers cannot deplane and enplane at the same time. Cargo cannot be unloaded and reloaded at the same time. However, the interior of the aircraft can be cleaned at the same time various activities are occurring outside of the aircraft (such as unloading cargo). Where concurrent activities become difficult to assess is in “grey†areas such as maintenance. If maintenance is taking place in the aircraft cabin, as an example (i.e., repairing a seat) then obviously passengers cannot board the aircraft for the departing flight. Similarly, if maintenance is taking place in the vicinity of a cargo compartment, the ground staff will have to wait until the maintenance is complete before the cargo can be loaded (or even unloaded, depending on the nature of the maintenance).
While I recognize you do not have specific knowledge about concurrent or simultaneous activities, I have included an area in the following answer grids for you to provide a short explanation of why you think an activity is concurrent or not. I brief explanation is sufficient. See the example explanations for the scope of what an acceptable response would be. During grading of these worksheets, the focus will be on your logic more than a correct or incorrect answer. I’m not looking for right or wrong answers versus how you viewed the concurrent or non-concurrent activities.
In each of the answer grids below, the assignment is to complete any of the boxes which are shaded in yellow, green or blue. The yellow cells are the primary data for each line item. The green cells will reflect the sum (or total) of the times for each of the major work areas (cabin interior, aircraft exterior, etc.). Finally, the blue cell is for your final answer as to the total turnaround time. Example exercise No. 1 in the workbook has been entered into the response grid below to help guide you in how to complete each worksheet. Refer to the Example in the Workbook to review how each number fits into the answer grid below.
Turnaround Time EXAMPLE No. 1
|
Activity |
Concurrent? (Yes or No) |
Concurrent Explanation |
Time Required (minutes) |
Total Time (minutes) |
|
External Power & Air |
NO |
Not concurrent. Must be completed before other work begins |
5 |
|
|
Total Time – Ext. Power and Air |
5 |
|||
|
AIRCRAFT INTERIOR |
||||
|
Passenger Deplaning |
NO |
Not concurrent. Arriving passengers must deplane before departing passengers can board the aircraft |
8 |
|
|
Interior Cleaning and Catering |
YES |
Can be accomplished while passengers are deplaning |
8 |
|
|
Passenger Boarding |
NO |
Not concurrent. Departing passengers cannot board the aircraft before arriving passengers have exited the aircraft |
20 |
|
|
Total Time – Aircraft Interior |
28 |
|||
|
AIRCRAFT EXTERIOR |
||||
|
Cargo Unloading |
NO |
Not concurrent. Must be accomplished before the departing cargo can be loaded |
5 |
|
|
Aircraft Maintenance |
N/A |
N/A for this example |
0 |
|
|
Fueling |
N/A |
N/A for this example |
0 |
|
|
Lavatory Servicing |
YES |
Can be accomplished simultaneously with passenger loading |
6 |
|
|
Cargo Loading |
NO |
Not concurrent. Cannot be accomplished before the cargo is unloaded |
20 |
|
|
Total Time – Aircraft Exterior |
25 |
|||
|
Flight Crew Connecting Time |
N/A |
N/A for this example |
0 |
|
|
Hub Adjustment Time |
N/A |
N/A for this example |
0 |
|
|
Total Time – Crew Connect. and Hub Adjust. |
0 |
|||
|
TOTAL TURNAROUND TIME |
33 |
Turnaround Time Exercise No. 1
|
Activity |
Concurrent? (Yes or No) |
Concurrent Explanation |
Time Required (minutes) |
Total Time (minutes) |
|
External Power & Air |
||||
|
Total Time – Ext. Power and Air |
||||
|
AIRCRAFT INTERIOR |
||||
|
Passenger Deplaning |
||||
|
Interior Cleaning and Catering |
||||
|
Passenger Boarding |
||||
|
Total Time – Aircraft Interior |
||||
|
AIRCRAFT EXTERIOR |
||||
|
Cargo Unloading |
||||
|
Aircraft Maintenance |
||||
|
Fueling |
||||
|
Lavatory Servicing |
||||
|
Cargo Loading |
||||
|
Total Time – Aircraft Exterior |
||||
|
Flight Crew Connecting Time |
||||
|
Hub Adjustment Time |
||||
|
Total Time – Crew Connect. and Hub Adjust. |
||||
|
TOTAL TURNAROUND TIME |
Turnaround Time Exercise No. 2
|
Activity |
Concurrent? (Yes or No) |
Concurrent Explanation |
Time Required (minutes) |
Total Time (minutes) |
|
External Power & Air |
||||
|
Total Time – Ext. Power and Air |
||||
|
AIRCRAFT INTERIOR |
||||
|
Passenger Deplaning |
||||
|
Interior Cleaning and Catering |
||||
|
Passenger Boarding |
||||
|
Total Time – Aircraft Interior |
||||
|
AIRCRAFT EXTERIOR |
||||
|
Cargo Unloading |
||||
|
Aircraft Maintenance |
||||
|
Fueling |
||||
|
Lavatory Servicing |
||||
|
Cargo Loading |
||||
|
Total Time – Aircraft Exterior |
||||
|
Flight Crew Connecting Time |
||||
|
Hub Adjustment Time |
||||
|
Total Time – Crew Connect. and Hub Adjust. |
||||
|
TOTAL TURNAROUND TIME |
Turnaround Time Exercise No. 2
|
Activity |
Concurrent? (Yes or No) |
Concurrent Explanation |
Time Required (minutes) |
Total Time (minutes) |
|
External Power & Air |
||||
|
Total Time – Ext. Power and Air |
||||
|
AIRCRAFT INTERIOR |
||||
|
Passenger Deplaning |
||||
|
Interior Cleaning and Catering |
||||
|
Passenger Boarding |
||||
|
Total Time – Aircraft Interior |
||||
|
AIRCRAFT EXTERIOR |
||||
|
Cargo Unloading |
||||
|
Aircraft Maintenance |
||||
|
Fueling |
||||
|
Lavatory Servicing |
||||
|
Cargo Loading |
||||
|
Total Time – Aircraft Exterior |
||||
|
Flight Crew Connecting Time |
||||
|
Hub Adjustment Time |
||||
|
Total Time – Crew Connect. and Hub Adjust. |
||||
|
TOTAL TURNAROUND TIME |
Turnaround Time Exercise No. 3
|
Activity |
Concurrent? (Yes or No) |
Concurrent Explanation |
Time Required (minutes) |
Total Time (minutes) |
|
External Power & Air |
||||
|
Total Time – Ext. Power and Air |
||||
|
AIRCRAFT INTERIOR |
||||
|
Passenger Deplaning |
||||
|
Interior Cleaning and Catering |
||||
|
Passenger Boarding |
||||
|
Total Time – Aircraft Interior |
||||
|
AIRCRAFT EXTERIOR |
||||
|
Cargo Unloading |
||||
|
Aircraft Maintenance |
||||
|
Fueling |
||||
|
Lavatory Servicing |
||||
|
Cargo Loading |
||||
|
Total Time – Aircraft Exterior |
||||
|
Flight Crew Connecting Time |
||||
|
Hub Adjustment Time |
||||
|
Total Time – Crew Connect. and Hub Adjust. |
||||
|
TOTAL TURNAROUND TIME |
Turnaround Time Exercise No. 4
|
Activity |
Concurrent? (Yes or No) |
Concurrent Explanation |
Time Required (minutes) |
Total Time (minutes) |
|
External Power & Air |
||||
|
Total Time – Ext. Power and Air |
||||
|
AIRCRAFT INTERIOR |
||||
|
Passenger Deplaning |
||||
|
Interior Cleaning and Catering |
||||
|
Passenger Boarding |
||||
|
Total Time – Aircraft Interior |
||||
|
AIRCRAFT EXTERIOR < 
We Accept
|
