On 1/18/03 there were 14007 mechanics on the seniority list. That does not include those who were laid off from TWA following 9-11.
Now there are around 10200 on the list.
A reduction of 3800 jobs, a payroll savings of $300,000,000 a year.
You can ask for a productivity savings for those heads, but it ties pretty close to the reduction in fleet size, so how you can claim it's increased productivity will be an interesting argument....
In April 2003, AA had 819 aircraft operating, not including that which was stored in the desert. Today, AA has around 645 aircraft, including the A300's and some MD80s which are still to be sent to the desert.
2003 ratio of mechanics to aircraft... 17:1
2008 ratio of mechanics to aircraft... 15:1
During that time, AA also whacked the F100 fleet and the PW powered 757 and 767 fleets. Throw in the maintenance halo for the 777 and 737 fleet vs. the older aircraft which they replaced, and it would appear to me that the maintenance staffing today isn't all that much lower on a per aircraft basis than it was before the concessions were implemented.
Also... you keep bringing up the 10% for the pilots. I know you're smarter than that, so if you're going to mention half of a fact, then also mention the bigger paycut they took during 2003-2004 because of how long it takes to pull out and requalify an entire fleet type of FO's and CA's on other types.
I'm not one to defend pilots very often, but if I apply your "future earnings" paycut methodology, even after the so-called 10% snapback, they still took the largest cuts of any employee group.