Prince William is set to undergo a series of medical tests following the recent death of his former military flight instructor, Flight Sergeant Zach Stubbings. Stubbings, 47, who trained the prince during his service at RAF Valley between 2010 and 2013, died battling multiple myeloma.
His death has raised health risks associated the exposure to to toxic exhaust fumes from military helicopters, including the Sea King aircraft that William piloted during his service. The Royal Air Force (RAF) station where
William trained was known for high concentrations of toxic exhaust fumes, including 7.5 micromoles of carbon monoxide per liter of air. A few studies have suggested prolonged exposure to such emissions could be linked to several cancers, raising concerns about the health of Prince William. Prince William will be taking the tests as a precautionary measure.
The royal family is reportedly taking no chances, especially in light of recent health concerns within the family. Both King Charles III and Princess Kate have been undergoing cancer treatment. Kate recently revealed she is in remission after six months of chemotherapy.
A palace insider has told Radar Online about the uneasiness in the Buckingham Palace. “William will undergo a range of tests to make sure he’s not suffering from any illnesses connected to his military service. Heaven forbid he’s developed any form of cancer in the service of his country", reported the outlet.

Britain's Prince William visits East Scryne Farm in Carnoustie, Scotland, Thursday Feb. 6, 2025. (Steve MacDougall/PA via AP)
The insider added, “The Royal Family does not need a triple whammy of cancer-stricken senior royals on its books, given Charles and Kate have both been battling the illness over the last months.�?br/>
Notably former military personnel who worked with similar aircraft have been diagnosed with various cancers. Many personnel were diagnosed with cancers including lung, throat, and testicular cancer. And strangely enough, six of these cases were linked to helicopter exhaust exposure, and have already been settled out of court. There are dozens of other affected aircrew members and their families, still seeking compensation, as per reports.
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Meanwhile, some reports suggest the Ministry of Defence (MoD) was aware of these health risks as early as 1999. However, they did not implement the necessary safety measures. In response to ongoing health concerns, the MoD has initiated new tests to assess the impact of helicopter exhaust emissions on aircrew’s health.
Meanwhile, Prince William was recently in the news after he deleted a post on X (formerly Twitter). The now-deleted post featured a photo of Prince William shaking hands with Thomas Tuchel, the newly appointed manager of the England men's senior football team. "Great to meet new @england manager Thomas Tuchel for the first time today, and hear about plans for the team," Prince William wrote. The omission of the word "men's" in the original post was soon rectified.