Vietnam’s national flag carrier Vietnam Airlines has spoken out on a report stating that its pilot tested positive for an illegal drug. Vietnam Airlines affirmed that the safety and health of its employees and passengers are the carrier’s key priorities. Vietnam’s national flag carrier Vietnam Airlines has spoken out on a report stating that its pilot tested positive for an illegal drug. Vietnam Airlines affirmed that the safety and health of its employees and passengers are the carrier’s key priorities. The pilot was shown testing positive for ketamine, an illicit drug in Vietnam, according to the report.