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 time”). 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

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