Lack of progress in negotiations between Delta Air Lines and the Air Line Pilots Association has forced the US major to defer indefinitely deliveries of four Boeing 777-200s.

The aircraft, which are part of the airline's firm orders for 13 Rolls-Royce Trent 800-powered 777s, had been due for delivery between December this year and April next year. Arrangements have been made, however, to replace the twinjets with four General Electric CF6-powered 767-300ERs, beginning early next year.

The Atlanta, Georgia-based airline has taken delivery of two 777s, and five more will arrive in the near term. Delta says it intends to operate the two in-service 777s through its summer schedule for this year, but is considering "various alternatives" for these aircraft, plus the next five, beyond the summer.

Delta says the deadline for deciding on the 777s comes as the airline and its pilots remain far apart on 777 pilot pay and work rule negotiations. The airline says that it is "unlikely" that the required contract modifications can be completed in time for the 777s to be included in the winter schedule.

It believes it is likely that the pilots will refuse to operate the 777 after 1 November without an agreement, but remains optimistic that a solution can be reached in the ongoing talks.

Source: Flight International