During pregnancy, your body changes in significant wide-ranging ways. Many of the normal physical changes of pregnancy create potential risks in the flight environment. The overall impact of these changes is unpredictable and varies between individuals and even between your own pregnancies. Additionally, there are certain pregnancy-related problems that can cause sudden incapacitation or life-threatening emergencies. The Aircrew Voluntary Acceptance of Risk document is meant to educate Airmen on these risks so they can make informed decisions about flying while pregnant.