Witness: We pushed off the gate at around 3.20pm and were taxiing to runway four as the US Airways flight took off. I noticed firetrucks with lights on scrambling toward the end of the runway but didn't think much of it, since drills are carried out frequently.

Around 3.30pm, the ground controller frantically asked the rescue team what they had seen and the reply was vague: "He's in the water."

The controller then asked for clarification and the response was: "I lost the target, he's in the Hudson." At that point we knew an airplane had gone down.

My first assumption was that it might have been a general aviation aircraft that had run into trouble, but seconds later a query came on the radio: "What type was it?"

The answer was terrifying. "Airbus 319 or 320, Cactus." Cactus is US Airways' call sign. The LaGuardia ground frequency, usually bustling with calls, went completely silent.

In a very sombre tone of voice, about 10 minutes after it all happened, the controller announced that the Airbus had ingested a bird on take-off and gone down in the river.

Departures were stopped. The radio was silent as every pilot contemplated the fate of the US Airways crew and their passengers on such a frigid day with the typically bad odds of ditching an airliner.

We sat on the taxiway for the next 45 minutes, looking to our right at Manhattan and the direction of the crash wondering if anyone would make it out. All we could see were helicopters hovering over the scene.

A few minutes later, we tuned our low-frequency navigation radio to a local AM news station and began to hear the news that there were passengers in rafts and on the wings. We were astounded to later see pictures of the unscathed aircraft.

It was my leg to fly and take off from the same runway, and making the same left turns over the Hudson was very eerie. As we went over the area where the plane floated, we flew in silence. Mark Williams, a pilot with a US regional carrier, was waiting to take off at LaGuardia Airport as US Airways flight 1549 crashed.