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Air Traffic Monitoring => Aviation Audio Clips => Topic started by: eboelter on January 09, 2019, 03:47:54 PM

Title: DCA: late takeoff & go-around due to radio interference
Post by: eboelter on January 09, 2019, 03:47:54 PM
KDCA tower at 1950 UTC on 9 January 2019
Title: Re: DCA: late takeoff & go-around due to radio interference
Post by: VASAviation on January 10, 2019, 03:46:15 PM
Thank you for sharing, eboelter.

Is it known the cause of the interference? It sounds like a hot mic at some point but I'm not really sure.
Title: Re: DCA: late takeoff & go-around due to radio interference
Post by: flyflyfly on January 11, 2019, 11:57:28 AM
Certainly sounded like a hot mike. You can hear the usual humming sound of two transmitters interfering. Also, there's some background noise suggesting it's a hot mike.

The hot mike could have been in 5512, the aircraft sitting on the runway waiting for its takeoff clearance: after the event they said "5512, we never heard *any* transmission...". Well, when there's a hot mike, there's usually only exactly one aircraft which did not hearing anything... :-) Everyone else would at least have heard some humming and garbled comms...
Title: Re: DCA: late takeoff & go-around due to radio interference
Post by: eboelter on January 11, 2019, 01:46:55 PM
I wasn't clear what the tower meant by his reference to working a helicopter and it being an issue at "local control".  I wonder if light guns were used at any point? 

Also, unrelated, it seems to me KDCA is using runway 4 more frequently.  I'd be curious to find out how its use is determined if anyone knows.