In February 2007, the fourth and last satellite of the BeiDou-1 system, BeiDou-1D (sometimes called BeiDou-2A, serving as a backup satellite), was sent up into space. It was reported that the satellite had suffered from a control system malfunction but was then fully restored.
Is there an answer to this question (If it cannot be answered, say "unanswerable"): In which month of 2007 was the fifth satellite for the BeiDou-1 system launched?
unanswerable