Table 1

The Royal Canadian Air Force (RCAF) classification of medical events, with potential impact, and recommended medical interventions

Class 1 medical eventClass 2 medical eventClass 3 medical eventClass 4 medical event
Minimal impact on missionMay result in a mission abort or compromised effectivenessLikely to result in a flight safety hazard or compromiseLikely to result in a flight safety critical event
May result in a deleterious effect on the health of the individual aircrew but minimal effect on performanceAircrew able to continue duties with minor to moderate performance compromiseMajor decrement in performanceTotal acute incapacitation (may include sudden death)
Requires routine periodic medical follow-upRequires medical attentionMay require immediate medical attentionRequires immediate advanced medical care