Boeing Co. (BA) has reshuffled the customers for initial deliveries of its delayed 787 and set aside plans to send the first six aircraft into commercial use, according to a published report.

The move would see launch customer All Nippon Airways (9202.TO) take 11 of the first 30 aircraft, while Chinese carriers appear to have slipped from the first deliveries scheduled for next year, according to flightblogger, at flightglobal.com, published by U.K.-based Flight International.

Boeing declined comment on the report, which comes ahead of the first test flight scheduled for June. The 787 is more than two years behind schedule, with its launch delayed several times by supply and design problems.

Jim Proulx, a spokesman for Boeing's commercial airplanes unit, said the company doesn't comment on individual delivery schedules to customers. He acknowledged that "where possible, we are making adjustments that meet our customers' needs while allowing us to successfully manage our production plan."

Boeing said it hasn't made any changes to its delivery schedule, with the first 787 due to arrive at ANA in the first quarter of 2010.

According to flightblogger, Boeing is switching some aircraft to ANA that had been destined for Chinese airlines, who originally hoped to have the 787 in time for last year's Beijing Olympics. The Japanese carrier declined comment.

ANA is expected to use its first aircraft for domestic routes, while Chinese carriers are more concerned about the first aircraft being overweight. While this is a common problem with new aircraft types, it is a bigger issue for customers planning to use them on longer international routes.

Boeing also has reportedly re-assigned 787s ordered by Delta Air Lines Inc. (DAL) to Qantas Airways (QAN.AU) and Air India. Delta recently refuted speculation it had cancelled some of its orders.

Delta and Royal Air Maroc had been slated to take some of the first six test aircraft, but this plan has been revised, according to flightblogger.

The airlines couldn't immediately be reached for comment.

The weight issues have troubled some 787 customers, since it would put aircraft performance below levels claimed by Boeing.

The 787 is the first commercial aircraft made with lightweight composite materials, rather than aluminum, cutting overall weight and boosting efficiency.

Boeing has outsourced much of the production, a move that has plagued the program with delays and forced the company to increase investment and resources.

Along with rival Airbus, Boeing is facing a weakening market for new aircraft, as airlines around the world cope with economic recession and a credit crisis that makes financing difficult.

Still, Boeing has said for the new, fuel-saving plane remains strong, and some customers want to move up in the order book as others defer multimillion-dollar purchases, making for a "dynamic" schedule that is subject to change.

The 787, the most successful launch ever at Boeing, has received more than 800 firm orders. So far this year, there have been no new 787 orders, and 32 cancellations.

-By Ann Keeton, Dow Jones Newswires; 312-750-4120;ann.keeton@dowjones.com