Originally Posted by
jumpseater
There are already systems in use to prevent runway incursions. One type has a sensor based on the runway strip/holding points which gives an intrusive and clear audio warning to the driver approaching the runway, regardless if it’s active or not. Unfortunately it would likely have been of little use here due to the speed and momentum of the vehicle.
It’ll be interesting to see:
If aircraft cleared for take off.
If the fire crews monitor the runway frequency and ground simultaneously, especially if they are not bandboxed.
If the ground/runway frequencies aren’t combined what co-ordination occurred/didn’t occur in ATC to allow the runway entry by the fire crews. Were stopbars extant, activated, deactivated, or unserviceable?
Fire cab ergonomics, once rolling fast, are the comms able to be heard?
Fire crew training, current/adequate/familiarity? a whole Swiss cheese of options raising their head here.
There are many systems aimed at preventing runway incursions , not sure which model they have in LIM and if it was active, but looking at the videos, the truck was at full speed and any alarm sounding in the TWR would've not made much difference
To answer some of your questions based on a normal international airport ::
1-a/c cleared for take off : Tape will confirm that , but I assume it was.
2-Fire Trucks are normally on ground frequency only , but can be instructed to switch to TWR when penetrating a runway , and to be on the same frequency of the crew of the aircraft they are attending to.
3- Stopbars, were most probably active if they have them in LIM , but a fire truck responding to an emergency can cross them ONLY if they get authorization by GND ATC..
4- Frequency loud enough to be heard in cab ; yes,
5- Training . Yes and is normally very high nowadays.
One thing on the first video surprised me, if that the Fire chief ( the pick-up car) is rather far behind the 2 fire trucks. Not really the norm.
One of the R/T transcript poste earlier, it is difficult to draw a correct picture as we canot hear the requests or responses made . The trucks ( Rescue6 ) were cleared to stop 90m from runway axis , by some cones. That is in fact the only part which is clear. .