[dghlsakjg]

They were all, including truck 1, queued up at the stop line waiting for clearance to cross. Truck 1 received clearance to cross, he began crossing, then received instructions to stop after it was too late.

The rest of the emergency vehicles were stopped because they hadn’t been authorized. Truck 1 started moving because he had received specific instructions to do exactly what he was doing.

I take it you’re not a pilot, controller or someone who has ever worked an aviation radio?

[jmtulloss]

FWIW the whole group received permission to cross. The instructions were to "Truck 1 and company", not just Truck 1

[dghlsakjg]

Thanks, I missed that.

[hatthew]

"Truck 1 and company" were cleared to cross. A few seconds later, "truck 1" was instructed to stop.

Edit: Confirmed truck 1 was the one involved in the collision. Previous text: It is unclear which truck specifically was involved in the crash. In photos, the truck has the number 35 on it, not sure if that would preclude it from being identified as "truck 1" verbally.

[dghlsakjg]

Ah. I missed hearing that “and company” in the recording.

In any case, if they were cleared across the runway, and they were, it isn’t really on them. It doesn’t change the gist of the argument. The broader point is that it wasn’t that one truck was barreling around being reckless as implied by gp, it’s just that one truck made it out and the rest of the company had yet to start moving (whether because they saw the plane coming from their viewpoint farther back, or just hadn’t started moving yet, we will find out later). The entire company had stopped at the line, and when cleared across the lead truck was struck. Of course the rest were still stopped behind the line, there was a giant fire truck in their path moments before.

The instruction to stop is, to my pilots ear, irrelevant. Until an instruction is read back by the receiving party, it is worthless. It might not have been received, or received incorrectly. That’s the whole point of the readback, to ensure that the instruction was received correctly (notice how I missed the “and company”… a readback would have caught that). If there is not a readback, controllers are instructed to ask for one. On top of that, it was a panic instruction using non standard verbiage. If he was already past the line, the instruction to stop might have made it worse.

[doubleg72]

“I take it you haven’t ever worked with radio.. “. Seems like you haven’t a clue how any of this works. Doesn’t matter if they had radio clearance, the fire truck is responsible for ensuring runways is clear and not driving in front of plane.

[dghlsakjg]

I’m a certificated pilot in two countries, trained in this region, and own an airplane. I have a pretty good grasp how this works, but am willing to learn if you have citations besides the CFR pull quotes elsewhere in this thread.

All people (pilots included) are responsible for only following ATC instructions if it is safe/possible to do so. You aren’t supposed to land on a runway with other traffic on it, even if cleared. You aren’t supposed to cross a runway if there is a plane taking off or landing, even if cleared. You aren’t supposed to clear a vehicle onto a runway at the same time you cleared a plane to land (this one’s an assumption, I’m not a trained controller).

You are making the assumption that the truck did not check the runway, but keep in mind that it is a 30ish ton vehicle, and the plane was moving at 150 mph at touchdown, 100 mph at the time of impact. There very well may not have been a plane visible when the truck started moving. The truck might not have received the non-standard clearance revocation, or received it and tried to get off the runway by accelerating across, or received it and begun slowing in the path of the plane.

The truck driver could have prevented this, but they certainly aren’t the primary cause.