There were several technical problems due to having the earliest models of the F-28, causing some operational difficulties.

The situation facing the small German forces were made worse by operational difficulties.

The ride had many operational difficulties in the beginning of the season.

The Constitution had operational difficulties which prevented it from meeting its original design objectives.

One reason for United's consolidation was a strong push to cut costs, particularly after operational difficulties led to reduced revenue last year.

However, even after completion the canal experienced financial and operational difficulties.

Usually, the Pentagon has cited security concerns or operational difficulties as the reason.

This approach is simple in principle but can lead to operational difficulties.

The cause of the malodors, and numerous other operational difficulties, is well understood.

"But there should be little in the way of operational difficulties."