beeping sound while in air

[v2tec]

After taking off I had a beeping sound. Two beeps with increasing pitch and a short break after each sequence.

 

 

I have no idea what it is and how to disable. There's no warning light, I pressed all buttons to disable warning tones, I muted all volume switches, but the sound still remains. No mode was selected (AA/AG) and master arm off. No bingo fuel.

 

 

 

Any idea?

[Guppy]

Home Fuel?

[XtraChrisP]

Whatever it says in your left DDI. That's where the ACAWS are displayed. Takeoff pitch maybe?

[Emmy]

Were you flying kinda slow? Stall Warning, Perhaps?

[dudeman17]

While I'm not truly sure what exactly you're hearing. I have heard from another person I fly with that they're having issues with the radar altimeter alert going off constantly and when it shouldn't.

 

Maybe that's what you're hearing.

Edited August 14, 2019 by dudeman17

[bfr]

After taking off I had a beeping sound. Two beeps with increasing pitch and a short break after each sequence.

 

 

I have no idea what it is and how to disable. There's no warning light, I pressed all buttons to disable warning tones, I muted all volume switches, but the sound still remains. No mode was selected (AA/AG) and master arm off. No bingo fuel.

 

 

 

Any idea?

 

The only one I can think of is (or i've always assumed it to be) a nav radio marker. Makes a racket for a couple of cycles as you pass over it and then stops. And you'll probably hear it again as you come into land and pass over it.

[Harker]

Probably the radar altimeter. It has happened that I took off and it kept going off even when I had climbed above its set floor. Just turn it off (floor needle to 0) and back on again.

[gonk]

+1 Rad Alt...I get it a lot.

[bbrz]

+1 definitely the RA. Set it to 0 to disable it and leave it there. Except in bad weather with very bad viz I really don't need it.

Edited August 14, 2019 by bbrz

[DowntownSIX]

Doesn't RadAlt only sound off once as you descend through the threshold altitude you've set though?

[bkthunder]

"Two beeps of increasing pitch" sounds like the RWR (although he said the volumes were all muted)

[BIGNEWY]

Only way to get to the bottom of this is for the OP to post a track replay or video showing the behaviour.

[Havremonster]

I got the same problem with the Low altitude warning does not go off after takeoff if I have landed for rearm.

[BIGNEWY]

I got the same problem with the Low altitude warning does not go off after takeoff if I have landed for rearm.

 

Can sometimes happen after a heavy landing due to damage.

 

Can you add a track.

 

thanks

[Tholozor]

Doesn't RadAlt only sound off once as you descend through the threshold altitude you've set though?

 

I think it only does that with the gear down, and the OP's description is during takeoff, so if he's got the radar altimeter maxed out, it won't stop until he's above 5k.

[Drac]

Can you record the sound and post it?

[bbrz]

I have no idea what it is and how to disable. There's no warning light...

Can you confirm that the red low altitude caution light in the RA gauge is not lit when the beeps occur?

[Davee]

I think it is the runway threshold approach beacon as you pass over it whether landing or departing.

[bbrz]

I think it is the runway threshold approach beacon as you pass over it whether landing or departing.

Marker beacons don't change their pitch.

[=Panther=]

Sounds like TACAN to me?

[DimSim]

For me last flight, it was the landing gear.  It did not fully retract. Seems to have been damaged on take off.

Made a repeated dull beep sound but with no warning lights except landing gear lever light remaining lit.