Pilots & Kidney Stones

Kidney stones are deposits of hard waste materials that often cause excruciating pain when they attempt to pass through the urine stream, potentially disrupting flight safety. As a result, the Federal Aviation Administration (FAA) closely monitors pilots with this disorder.

Significance

• Aeromedical examiners (AMEs) are physicians charged with conducting pilot physicals. "A recent history of a kidney stone is disqualifying for the issuance of a medical certificate," advises the Aircraft Owners and Pilots Association.

Time Frame

• Pilots typically may resume flying once the stone has passed or been removed and an AME certifies the absence of the obstruction.

Confirmation

• Documentation of this absence should include X-ray confirmation and reports of the evaluation and treatment. Pilots with recurrent instances of stone formation may also be required to undergo a 24-hour urine analysis.

Exemptions

• Individuals with stones that refuse to pass may apply for an exemption. "The FAA will consider granting a waiver if their physician can affirm that the stone appears stable and is unlikely to pass spontaneously," reports Virtual Flight Surgeons Inc.

Considerations

• In some instances, an AME will not be able to provide certification and must defer decision to the FAA Aeromedical Certification Division (AMCD) or the Regional Flight Surgeon.