1. Airport terminals are “people processing plants” (T5 output is 40,000 per day). No other processing system would be switched from zero to 100% output on the first day operation.

The opening of a new airport or terminal carries a significant degree of risk. Many major opening have been affected by problems such as those experienced at Heathrow Terminal5.
The difficulties were later blamed on a number of problems with the terminal's IT systems, coupled with car parking.[

British Airways chief Willie Walsh agreed and blamed the problems principally on a failure to familiarise BA staff with the terminal as a result of building work over-running its September 2007 deadline.

“We believed T5 was ready to open on March 27,” he said. “It is clear we made mistakes and compromised on the testing regime. There was insufficient familiarisation because of delays in completing the building.” Staffs were not as familiar with the terminal as they should have been.

"There were also software issues. It would be unfair to say the baggage problem was to blame. The design of the baggage system is good. It was a combination of problems.”

Walsh went on: “We understand at least 95% of the issues on the opening day. We planned six months of full testing from September to March and we compromised on that. If there was a single issue, it was that.”

Most problems occurred due to staff being unfamiliar with new equipments.

Willie Walsh revealed that IT problems and a lack of testing played a large part in the trouble.
Problems experienced at the opening of Heathrow's Terminal 5, which led to hundreds of cancelled flights and thousands of passengers losing their luggage, "could and should" have been avoided.
Most of the issues were caused by poor system testing, poor communication between British Airways and airport operator BAA, and poor staff training.
Unless we are 100% sure, we can not switch from zero to 100% out put on the first day of...