Airplane evaluation

English Boards Community Support
1

Hello,

I have a problem with the airplane evaluation.

When looking for the more suitable aircraft for the route like TSV - MEL, I have chosen between the Airbus A320 light and the Boeing 737-800 BGW.

On the airplane evatualion it say :

Airbus A320-200 light remove.png 32,00 114 6.158 267 863 347 2.705 8.656 516 19.512 171 AS$

-8.796(-78%) -6.728(-50%) -4.660(-30%) -2.404(-13%) -336(-2%) 1.920(8%)

Boeing 737-800 BGW remove.png 32,00 114 6.264 267 845 332 2.705 8.906 530 19.850 174 AS$

-9.134(-81%) -7.066(-52%) -4.998(-32%) -2.742(-15%) -674(-3%) 1.582(7%)

 

So the Airbus should give me more profit.

But in the real situation :

With the Airbus at lease rate 206 000 AS a week I make 8712 AS profit on 90 economy passengers.

With the Boeing at lease rate 208 000 AS a week I make 12950 AS profit on 84 economy passengers.

So I checked that for every routes of my boeing fleet and came to the conclusion that with Airbusses I make more profit. So I leased Airbusses to replace my Boeing fleet. I'm now doing that. But when I see the flight of the TSV - MEL, it suddenly seems that the Boeing is making more profit... 

Can somebody explain me that? I'm on Meigs with Australias Spirit.

Thank u

2

From what you wrote it looks like Boeing is giving you a better profit, unless you made an error with the Airbus numbers. Don't really understand your question ...

There are several factors that can skew your initial AET assesment:

- types of seats installed. A320 and 737 families accomodate different number of seats of the same category

- age of the aircraft, the older the aircraft the more it costs in maintenance

- actual lease rate, AET does not account for discounts in lease rate you can get when getting the plane from the used market (in flight costing it uses the default lease rate for the aicraft age)

- actual cost of maintenance: while maintenance is charged per flight, if you have long stretches of short flights with no maintenance window (e.g. 8 hops without maintenance) the distributed per-flight maintenance cost is slightly higher than what the AET says it is.

3

Plus the fact, that when u shifted the Boeing flight schedule to the airbus, the Boeing schedule is now empty. Thus the system doesn't take the lease rate into account anymore...hope u get what i'm trying to say... Because the roughly 4000AS$ look much like "no lease rate calculated by the system"

Lets say your lease rate is 70,000 a week. With 7 Flights/week the system would calculate proportionally the lease rate for each flight. So lease rate per flight would be 10,000AS$. With 14 Flights it would be 5000AS$ per flight and so on...

BUT(!!!) as soon as the schedule is empty, the system does not do that anymore! So lease rate is calculated as zero, and thus the flight seems to make more profit, which actually is not the case...

4

Plus the fact, that when u shifted the Boeing flight schedule to the airbus, the Boeing schedule is now empty. Thus the system doesn't take the lease rate into account anymore...hope u get what i'm trying to say... Because the roughly 4000AS$ look much like "no lease rate calculated by the system"

Lets say your lease rate is 70,000 a week. With 7 Flights/week the system would calculate proportionally the lease rate for each flight. So lease rate per flight would be 10,000AS$. With 14 Flights it would be 5000AS$ per flight and so on...

BUT(!!!) as soon as the schedule is empty, the system does not do that anymore! So lease rate is calculated as zero, and thus the flight seems to make more profit, which actually is not the case...

I have checked it, and that's it. For the Boeing there's no lease rate accounted ! Thank u for the info !