Richard Bloch was the arbitrator that created the seniority list of the merger Pinnacle/Mesaba/Colgan groups in 2011, now known as "Endeavor Air".

The seniority list is not going to change, but the conditions and restrictions of the award from June 16, 2011 is in force until June 16, 2016 (pretty sure it was the 16th..). 5 years from release. The Bloch award has some pieces that are still impacting awards for captain vacancy bids.

Mesaba (XJ) must have 279 -900 CA positions, and Pinnacle (legacy-9E) must have 95.

For -200 CA positions the numbers are 541 9E and 100 XJ, but due to the parking of -200's far below 641 -200 CA's, the captain vacancies are awarded at a ratio of 5.4:1 between premerger 9E and XJ.

What this means is that CA seats for the -900 go a bit junior to hit the XJ number of 279, then seniority rules overall. For the -200's coming back it will be ALL premerger pinnacle and Mesaba at a ratio of 5.4:1, which also tends to go a bit more junior by seniority number.

Hope that explains it in a cliffnotes version.