Advance ‘Marine One’ take-off warnings not received before airprox with Envoy E170

Concern over radio transmission reliability discussed days before regional jet’s encounter with US presidential helicopter. Investigators have revealed that two transmissions from the US presidential helicopter, advising preparation for take-off, were not received by air traffic control before a loss-of-separation incident involving an Embraer 170 ...

• Published date: 28-08-2026 11:48 AM