Menu Sign In Contact FAQ
Banner
Welcome to our forums

An interesting airprox (Red Arrows jet and a C152)

I expect this will be quietly shelved or a ridiculous finding will be published by the Board of Enquiry, if one is ever held.
I remember a fatal accident in Wales between a Jaguar and a C152 in which the Jag hit the Cessna from the rear at about a 7 o’clock position travelling at 450 knots, and the findings for the cause of the accident was the failure of BOTH pilots to see each other. Absolute tragedy for all concerned but I believe the findings gave a very false impression of the occurrence.
The ATZ at Wickenby is, like every other ATZ there for a purpose – safety and the Reds should know better.

UK, United Kingdom

Xtophe wrote:

By reading the various report from the (UK) airprox board, loads of military a/c don’t have TAS/TCAS/… due to money and the difficulties to integrate it in the existing avionics and the restricted space.

My guess is only few of them will have transponders, those used in displays or transport obviously
I am not sure who provide radar services for UK mil but in other places it tends to be completely independent from civilian ATC, even for CAS…

Last Edited by Ibra at 01 May 18:08
Paris/Essex, France/UK, United Kingdom

Some of the older radios might have drifted a bit, too. Someone tried to use 25kHz radio at Andreas set to 130.1, and on 130.105 (which is the same physical frequency), the transmission sounded garbled and unintelligble (but perfect if you set 130.1 on the receiving end). The transmitting radio had drifted off spec far enough that the carrier fell outside of the receiver’s band pass on 130.105, and so all the receiver got was one of the sidebands without a carrier (which is what results in a garbled unintelligible voice sound).

Andreas IOM

Peter wrote:

The transmit signal on say 120.225 and 120.230 is identical in all respects – see many previous threads

They are likely identical in practise, but they need not be.

ESKC (Uppsala/Sundbro), Sweden

The transmit signal on say 120.225 and 120.230 is identical in all respects – see many previous threads e.g. here.

Administrator
Shoreham EGKA, United Kingdom

Peter wrote:

You can use those with a 25kHz radio and nobody can tell because the transmit frequency is the same as before.

I think it’s to stop it transmitting “wide” such that it gets picked up by receivers on the adjacent 8.33Khz frequencies.

Exemptions from civilian equipment carriage/airspace rules is how in the US a F4 hit a DC9 and killed everyone on board.

Andreas IOM

Conveniently they are very often exempt form civilian rules so no VHF 8.33kHz

I wonder whether this is why the UK CAA has implemented most 8.33 channels as “fake 25kHz” channels i.e. just adding 5kHz. You can use those with a 25kHz radio and nobody can tell because the transmit frequency is the same as before.

Administrator
Shoreham EGKA, United Kingdom

James_Chan wrote:

all military aircraft have other aircraft detection activated on their head-up displays

The Reds fly the Hawk T1 i.e. ancient.

By reading the various report from the (UK) airprox board, loads of military a/c don’t have TAS/TCAS/… due to money and the difficulties to integrate it in the existing avionics and the restricted space.

Conveniently they are very often exempt form civilian rules so no VHF 8.33kHz, no TCAS, no RVSM

Nympsfield, United Kingdom

Interesting that in this day and age that not all military aircraft have other aircraft detection activated on their head-up displays….

13 Posts
Sign in to add your message

Back to Top