Qantas Fleet

[markis10]

I've got the 717s at 11.40 years, airfleet hasn't taken into account 4 of the 5 birds coming in from Click Mexicana.

DHC8s coming in at 7.83 years. (Those DH8Bs aren't helping though at 17.27 years average across the 5)

Airfleets is based on real time actual fleet at time of query.

 

[CaviAck]

Airfleets is based on real time actual fleet at time of query.

I know, but I thought I'd include the incoming 717s as they're coming online soon to see what QF's fleet is heading towards.

 

[Jacques Vert]

(Those DH8Bs aren't helping though at 17.27 years average across the 5)

But QL need them as they are the only ones in the fleet that can land/take off at Lord Howe.

 

[CaviAck]

But QL need them as they are the only ones in the fleet that can land/take off at Lord Howe.

Time to tell Lord Howe to lengthen their runway

 

[Aussie_flyer]

Time to tell Lord Howe to lengthen their runway

That is a pretty big ask

 

[CaviAck]

That is a pretty big ask

I know, just a joke. Is Lord Howe Island that much in demand for QF to justify flying with old aircraft or is there some sort of requirement forcing QF to?

 

[ajw373]

I know, just a joke. Is Lord Howe Island that much in demand for QF to justify flying with old aircraft or is there some sort of requirement forcing QF to?

Probably more enticing, rather than forcing.

 

[Aussie_flyer]

I know, just a joke. Is Lord Howe Island that much in demand for QF to justify flying with old aircraft or is there some sort of requirement forcing QF to?

I think they make a heck of a lot of money being the sole carrier. The prices are very high. If they pulled out Lord Howe would have no air link. I suppose the NSW government possibly supports them somehow too.. but I'm not sure

 

[ajw373]

The fleet size when you take into consideration the DHC's and 717s.

The fleet size grows dramatically, it's understandable that an average age can be a higher number if there are lots of aircraft to replace or a large network requiring lots of aircraft to support (delivery slots, immediate capital expenditure, cash flow requirements, etc). If you take out the regional fleet, the fleet size isn't that big and upkeep of the aircraft shouldn't be too hard if done right, as there are less planes required to support and replace. Although I will admit that scaling on revenue and expenditure would throw these assumptions out.

On a side note the regional DHC8 and 717 fleet is 8.76 years old on average.

An average is just that, an average so fleet size doesn't matter because it averages out. That is the whole idea of averages.

Though still don't think you have answered the question why 9.09 is good, but 9.09, a change of .17 years is not so good. Both numbers in the grand scheme of things are so close they make no difference what so ever.

 

[Mr_Orange]

Time to tell Lord Howe to lengthen their runway

That would be very tricky, although somehow I think you already know that .

 

[Jacques Vert]

An average is just that, an average so fleet size doesn't matter because it averages out. That is the whole idea of averages.

Though still don't think you have answered the question why 9.09 is good, but 9.09, a change of .17 years is not so good. Both numbers in the grand scheme of things are so close they make no difference what so ever.

Perhaps the median age is a better measure, but I have no idea what it is.

 

[medhead]

Perhaps the median age is a better measure, but I have no idea what it is.

Median = middle = youngest + (oldest - youngest)/2

 

[Mattg]

I know, just a joke. Is Lord Howe Island that much in demand for QF to justify flying with old aircraft or is there some sort of requirement forcing QF to?

I know another island in the Pacific that Qantas uses some of its oldest aircraft to fly to, charging top dollar, and there is no requirement forcing them to

 

[CaviAck]

Perhaps the median age is a better measure, but I have no idea what it is.

Median age is 3346 days (9.17 years).

Median = middle = youngest + (oldest - youngest)/2

According to that formula median age would be 4467 (12.24 years).

 

[serfty]

Lets try "modal" average then ... to within 1 rounded year, what is the age that has the most hits when considering the age of each aircraft?

 

[medhead]

Median age is 3346 days (9.17 years).



According to that formula median age would be 4467 (12.24 years).

Where you get 9.17 from?

Youngest is a matter of months? I don't think I missed any weighting. Perhaps 9.17 is the age of the middle aircraft. Number in fleet/2 then count up or down the aircraft list ordered by age. :?:

 

[ajw373]

Perhaps the median age is a better measure, but I have no idea what it is.

Still doesn't change the fact that you seem to think 9.09 is ok, but 9.26 is bad, that is what has me totally confused as there is bugger all between those two figures. Even a variation of a year isn't so bad, now 5-10 you might be onto something.

 

[CaviAck]

Lets try "modal" average then ... to within 1 rounded year, what is the age that has the most hits when considering the age of each aircraft?

Nope not even going to try and work that one out on excel.... Especially since I've got all the ages in days....

Where you get 9.17 from?

Youngest is a matter of months? I don't think I missed any weighting. Perhaps 9.17 is the age of the middle aircraft. Number in fleet/2 then count up or down the aircraft list ordered by age. :?:

I don't think the formula you gave works to find the middle number.

9.17 is the age of the aircraft in the middle. The youngest aircraft is 43 days old from first test flight.

 

[medhead]

I don't think the formula you gave works to find the middle number.

9.17 is the age of the aircraft in the middle. The youngest aircraft is 43 days old from first test flight.

It works out the middle age. Half of the range of ages then add that to the youngest age. That does indeed work out the middle. It is different to the age of the middle aircraft, which can be worked out as per my second post.

 

[CaviAck]

Still doesn't change the fact that you seem to think 9.09 is ok, but 9.26 is bad, that is what has me totally confused as there is bugger all between those two figures. Even a variation of a year isn't so bad, now 5-10 you might be onto something.

I'm thinking that because I'm more inclined to allow an airline an older average age if they have a big fleet to maintain and rotate through and fly to some limiting ports like LDH. This would some what be the case for QF because they're flying 205 birds with 5 being old DH8Bs to serve LDH. As for airlines with really large fleets like AA or DL I'm even more inclined to ignore their fleet's age. (I never realised how big QF's fleet is until I saw how many DHC8s they operate)

Now when we remove the regional fleet QF's fleet drops down to SQ's level and a more direct comparison with our regional neighbour can be made. 9.26 v 6 years 8 months is a bit of a wide one, especially considering the 738s QF are flying are 12 years or younger with the average being pushed up by the poorly planned replacements of the 747s and 763s. Heck even the A333s are edging near 10 years and they're supposed to replace the 763s?

That was the reasoning I made that wildly subjective comment on, but after looking at other airlines like BA, IB, AF, AZ with similar fleet sizes 9.26 overall isn't bad and would place QF among the Europeans.