A month after the birth of daughter Princess Charlotte, Prince William returned to flight training Monday, with his nonroyal job as air ambulance pilot. A palace spokesperson confirmed for People that the royal dad left his family at Anmer Hall to start the last period of his pilot training.

Prince William is said to be training aboard a new helicopter, in a bid to be a fully operational pilot for East Anglian Air Ambulance in a few weeks. His training is split between Cambridge, Norwich and Staverton in Gloucestershire -- home base for Bond Air Services, the company that directly employs him.  

Once Prince William completes his training, he will undertake shifts like other pilots, helping to save lives in the region of England just north of London. The palace also revealed that William will donate his annual salary, reported to be around $60,000, to an undisclosed charity. 

The Duke of Cambridge reportedly took an unpaid leave in April following the first phase of his training with East Anglian Air Ambulance, as the Mirror reported. He previously served in the Royal Air Force, most recently as a search and rescue pilot. His return on Monday marked the end of an almost six-week break from flying.

William was also busy attending various royal engagements and public functions in recent weeks, including the Audi Polo Challenge in Ascot, which he attended with his brother Prince Harry on Sunday, E! News reported. Not only did he play in a charity polo match, but he also mingled with Hollywood celebrities such as Chris Hemsworth, his wife Elsa Pataky and daughter India Rose. Prince William even received a cute pair of pink boots for Princess Charlotte -- a gift from Audi executive Andre Konsbruck.

Prince William took on an air ambulance pilot job to help teach his children what a normal family looks like. This was part of the royal couple’s plan to provide as much of an "ordinary" childhood as they could for Prince George and Princess Charlotte.