buona analisi , sicuramente piu' critica e reale di quelle trovate sui giornali ,
per quanto riguarda la flotta obsoleta , mi ha colpito un post su A.net , dove si afferma
che un MD80 consuma circa il 20 % in piu rispetto ad un 738 , su una tratta di di medio raggio , oltre al volume di cargo inferiore ....
spero non me ne voglia il forumista se posto lo specifico
**************************************************************************************
Ok, now everyone realize this is just hypothetical using numbers from the internet.
Route: DFW-ORD 1290 km
737-800
Fuel Burn: 850 gal/hr
Speed: 836 km/hr
2 pilots: Pay taken from airlinepilotpay.com, from AA. Say a 5 year crew is flying this route.
Captain: $152/hr
Co-pilot: $94/hr
F/A (4) @ $25/hr
Fuel: say $3/gal
Leasing costs, insurance, and maintanance unknown
Time enroute: 1 hr 32 min (1.54 hrs)
Fuel: 1309 gal ($3927)
Crew: $532.84
MD-83
Fuel Burn: 1000 gal/hr
Speed: 815 km/hr
2 pilots: Pay taken from airlinepilotpay.com, from AA. Say a 5 year crew is flying this route.
Captain: $148/hr
Co-pilot: $92/hr
F/A (4) @ $25/hr
Fuel: say $3/gal
Leasing costs, insurance, and maintanance unknown
Time enroute: 1 hr 35 min (1.58 hrs)
Fuel: 1580 gal ($4740)
Crew: $537.20
So, simply looking at fuel and crew to operate a 738 DFW-ORD costs $4459.84. To operate an MD-83 on the same route costs $5277.20. Not a huge difference, but multiply it be 2X a day over the course of a year and you save nearly $600,000 by switching to a 738. (Or nearly $50,000 a month)
So, unless the extra 17 seats on the 738 really generate alot of revenue, first class seats, in my opinion it doesn't make sense to change.
After buying the new a/c you have a lease to pay.
Insurance premiums go up compared to an old, used MD-80
Maintanance falls short term due to having a new a/c
737-800
148 seats 16F, 132 Y
20540 kg cargo
MD-83
136 seats 16F, 120Y
16400 kg cargo
Cost of ownership at the moment these MD80s are cheap on a per seat basis.
Maintenance costs will rise as the plane gets older,
And as the maintenance cost gets higher and parts life or time between maintenance intervals get shorter... the downtime will rise... adding to the ownership cost...
After that, they have to consider the cost of disposal AND replacements... If the market price or the scrapping price gives them an unworthy "disposal returns', then they'll keep it for a bit longer.
It's all in the equation... it's all in the equation..
********************************************************************************