Knock it off

[Rikus]

Hi, i was wondering, how do you use the expression:

 

Knock it off

 

You say only one time, or you say 3 times:

 

Knock it off, Knock it off, Knock it off

 

I was looking for an aviation video, but i don´t found anything.

 

Greetings

[159th_Viper]

To quote:

 

Knock-it-Off (KIO)/Terminate

 

According to AFI 11-214, Aircrew and Weapons Director Procedures for Air Operations, the term "Knock-it-Off/Terminate" will be used to direct all aircraft to cease maneuvering and will be used when safety of flight is a factor.

 

If danger is imminent, directive calls should be made. Typically, "Knock-it-Off" calls are reserved for safety of flight issues, "Terminate" is commonly used to cease maneuvering when the desired learning objectives (DLOs) have been met. For example, when maneuvering in Extended Trail, and all the briefed maneuvers have been accomplished, a "Terminate" should be called. When the flight is approaching an area boundary or cloud clearance becomes a factor, a "Knock-it-Off" will be called.

 

Following a "Knock-it-Off/Terminate," all flight members must vigilantly clear their flight path while terminating individual maneuvering and adhere to deconfliction responsibilities. Flight members will then proceed as directed by the Flight Lead.

 

Example of the Knock-it-Off/Terminate comm:

 

"Knights Terminate" (anybody can call this).

 

"Knight One Terminate.""Knight Two Terminate."(Knight One says: ) Knight Two rejoin right turning (for example). (Knock-it-Off comm will use the same flow, just replace "Terminate" with "Knock-it-Off.")

 

Flight members will transmit "Knock-it-Off" and cease maneuvering when any of the following situations occur:

 

A dangerous situation is developing (including over-G or G-LOC).

 

Approaching area boundary.

 

Unbriefed or unscheduled flight enters the working area and is detrimental to the safe conduct of the mission.

 

Minimum altitudes are approached.

 

Weather conditions below minimums.

 

Minimum cloud separation approached.

 

Minimum Range to other flight member approached.

 

Situational awareness is lost.

 

Radio failure is recognized.

 

Bingo or Minimum Fuel State is reached.

 

Wing rock is observed (unless signaling a Rejoin).

 

If the Wingman calls for "Knock-it-Off" state the reason to the leader at the end of the radio exchange.

 

http://navyflightmanuals.tpub.com/P-367/P-3670043.htm

 

So it appears that the answer to your question is that it is used once only.

[luza]

You usually say it once, and it's an expression used to tell someone to stop doing something.

[SkateZilla]

once only,

 

I think when the one F-16 Thunderbird crashed, they simply said "knock it off" and everyone went to predetermined waypoint's and landed or flew pattern overhead.

[kam]

While scanning the radiowaves I heard a 492nd lead say it 3 times to his flight during a training mission over the Vale of York one day

 

But he did sound very, very angry at them...

[Gunsmoke]

The T-Bird crash was a good example. Just watched it and after the initial "knock it off" call out. Each pilot responded with the same in sequence.

[Cali]

Anyone can use that not just pilots.

[Lange_666]

The T-Bird crash was a good example. Just watched it and after the initial "knock it off" call out. Each pilot responded with the same in sequence.

 

This one:

 

[Rikus]

In the minute 3:05 you can hear it 3 times:

 

[SkateZilla]

For what it's worth,

Using scanner at NAS Oceana Airshow, the Blue Angels only issued the Command Once, and 2-6 Replied.

 

(There was severe inclement weather in bound. KIO Command Came over the radio as the Diamond Formation flew their pass and vanished into heavy fog/downpouring rain at the end of runway 05 (North)).

 

As which point they no longer did passes over the flight line, but re-formed about 5 miles out, and after a few minutes the Announcer made the announcement "Due to Severe Inclement Weather Inbound the Blue Angels are unable to continue their demonstration".

 

After about 5 minutes they did the Carrier Break Pass and Landed.

Edited September 22, 2014 by SkateZilla

[Aginor]

I don't know about knock it off, but the equivalent " terminate " I heard on several occasions (videos) twice by the same pilot.

Perhaps because you can hear it better when it is repeated.

[Sabre-TLA]

Twice at 2:20 in this video:

 

Funny that for AAR the tanker calls "BREAKAWAY" 3 times according to NATO ATP-3.3.4.2.

[OutOnTheOP]

I think it's an urgency issue: for the Thunderbirds crash and the Blue Angels weather anecdotes mentioned, there was little urgency: none of the aircraft were in imminently dangerous positions (barring the Tbird that had already crashed, of course!), so there was little urgency.

 

However, if aircraft get dangerously close in ACM practice, or get below briefed altitudes in low visibility, or similar, you would call it multiple times to ensure it was heard and understood. Same reason for the AAR breakaway: you need a response RIGHT NOW, because it's an immediate danger of collision

[SkateZilla]

Twice at 2:20 in this video:

 

Funny that for AAR the tanker calls "BREAKAWAY" 3 times according to NATO ATP-3.3.4.2.

 

I think it's pilot dependent, I knew some pilots that issued twice, and others that issued once.

[Aginor]

Yeah, I think it is the urgency, radio quality, and perhaps just what you are used to.

Now I also remember another occurrence of "terminate" always said twice, that was in that Canadian tv documentary series Jetstream.