A question about real F-16 procedures and Falcon BMS
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Hello everyone,
There is a question that I want to know the answer for a long time. I have looked for the answer quite some time but I did not find a satisfactory answer. My question is, why during taxi, takeoff and landing Master ARM is on SIM? On-air putting the Master ARM to SIM gives you some advantages about reaction times of plane(correct me if I am wrong please) but what is the point of this while on the ground? I am doing this in Falcon since I carefully watched the F-16 HUD videos, without knowing the reason :).
Here are the two reference video:
As you can during taxi, takeoff and landing Master ARM is SIM. Is this implemented in Falcon BMS?
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Yes SIM position is implemented and functional.
In peace time in real I don’t think they use the ARM position frequently.
If the plane is armed with missiles u don’t want to have an ooooppppssss that shouldn’t leave the rack, or have some bullet holes created to your instructor.
Even though that ooooppppssss has happened.
Think of it like the don’t point a loaded gun else than the ground or to the sky, which is a rule in the army.Στάλθηκε από το MI 5 μου χρησιμοποιώντας Tapatalk
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Yes IIRC the BMS Maverick training mission does tell you to put Master Arm into SIM while boresighting probably for the above reasons.
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I think you’re missing the OP’s point. He understands what SIM is for and what it does; he’d like to know why it’s often to set to SIM and not simply SAFE whilst on the ground. My guess is for testing and setting up systems/weapons.
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Expect so because to enable Weapons delivery modes the switch must be in SIM or Master Arm and one of those is safer on the ground…a pre flight example here
5.4.2.5. Camera Check (F-16C)
In order to verify proper camera coefficients, a ground stabilized camera check is recommended on
every sortie in which VTR assessment will be used. Turn the VTR to HUD, switch on, turn the master
arm switch to SIMULATE, and select A-G master mode with DTOS symbology displayed. -
I think you’re missing the OP’s point. He understands what SIM is for and what it does; he’d like to know why it’s often to set to SIM and not simply SAFE whilst on the ground. My guess is for testing and setting up systems/weapons.
That is exactly what I am trying to say. Thank you Planehazza.
My point is, in both of the videos they keep Master ARM SIM for the entire video(even on the ground). I know why you need to keep Master ARM SIM on the air but what is the point of on the ground? I believe in first video plane do not have any ordnance. Because it is kind of a demonstration flight and according to AFI publications it should not be loaded with any ordnance. But in the second video, there are some A-G and A-A training munitions. So I am especially asking for the first video from the begining of the video to the end of the video, the pilot is not moving Master ARM switch to other positions. It remains SIM for entire flight even after land. That is what I want to know and if that implemented or not.
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The question is not correct, at least for me doesn’t make sense.
Why do you ask if something is implemented in BMS when you already use it in BMS? Ain’t obvious?
If u ask why they use SIM all the time on ground well I believe this is also answered. Why u release the safety on a firearm only when you are about to fire it?
Στάλθηκε από το MI 5 μου χρησιμοποιώντας Tapatalk
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The question is not correct, at least for me doesn’t make sense.
Why do you ask if something is implemented in BMS when you already use it in BMS? Ain’t obvious?
He’s not asking if it’s implemented in BMS; he knows it already is. We all know what SIM is used for.
If u ask why they use SIM all the time on ground well I believe this is also answered. Why u release the safety on a firearm only when you are about to fire it?
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Weight On Wheels will also stop a weapon firing, so SIM or SAFE are almost redundant; OP wants to know why pilots use SIM instead of SAFE for TO/Taxi etc.
It will likely be an SOP thing, or as I guess above, a requirement for several system BITs/warmup/programming etc.
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He’s not asking if it’s implemented in BMS; he knows it already is. We all know what SIM is used for.
He does at the end, below the videos, so it is/was a bit confusing what he’s asking.
@mhm:
As you can during taxi, takeoff and landing Master ARM is SIM. Is this implemented in Falcon BMS?
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Even though again at the army safety is no1.
There are rules.
Even if u don’t have a magazine loaded to your gun or bullets and u r found with the gun armed (safety lock to off) u r punished.
This is to learn always safety first. When u actually want to use the weapon u must remove the safety. On training or actual mission u set to arm only on ingress, and on egress u set it back to sim or off. It’s on the checklists.
Safety First.Στάλθηκε από το MI 5 μου χρησιμοποιώντας Tapatalk
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He does at the end, below the videos, so it is/was a bit confusing what he’s asking.
My bad, I’m not as ‘eagle-eye’d’ as you
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On training or actual mission u set to arm only on ingress, and on egress u set it back to sim or off. It’s on the checklists.
It could be even more strict.
SAFE on ingress, SIM after fence in. ARM once cleared hot (preferably only seconds before weapon release), back to SIM immediately after weapon release, SAFE on fence out. (can’t count the times I’ve messed up perfectly good runs or A-A engagements because I still had SIM set when I reached release parameters :mad: )
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Sorry for confusion guys. What I was asking about is the reason behind the putting the Master ARM to SIM on the ground. I know about the use of Master ARM switch on air. My question is, why you keep the switch on SIM while taxing on the ground?. If you have weapons to program it is OK to put the switch to SIM on the ground but after that(finishing the programming the weapons) why pilot keeps doing it?
There are lots of other videos they do the same thing. It does not matter it is a training or demonstration flight. My observation from the videos is, pilots keep master arm SIM regardless of loaded ordnance or not while on the ground. And I am asking the reason behind this procedure(putting the master ARM to SIM on the ground).
Again, sorry for the confusion and thank you for your answers guys.
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No worries man, don’t loose your time over explaining what your question was, this kind of things keep happening. Many people have their answers more than you have your questions.
I’m sorry I don’t have an answer to your question, which is obviously why I didn’t reply in the first place. Hope I have one for the next question, which you’ll hopefully have.
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They usually do EOR weapon check at the End of Runway area.
it needs to set MATER to SIm to check all weapon sys.
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There just isn’t a reason to set it to off. Sim won’t let you employ anything. So why go off on the ground and then have to go to sim right after getting airborne to do your weapon check? Just put it in sim from the get go. And as for ferry flights etc, just use sim out of habit. Off doesn’t add anything. The only time I would set off is if I had some kind of weapon malfunction like a runaway gun or something. And even then sim would probably accomplish the same thing.
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Thanks for the answers guys. Also, I do not remember where I have read but the position of the Master Switch effect the ejection time of the seat. If Master is ARM or SIM, ejection happens right away after handle pulled(no delay). But if Master ARM is SAFE ejection needs 1 second delay. The reason behind this I believe was preventing unwanted or accidentally ejection. This may sound awkward but I remember something like this. This might be the reason for putting the Master ARM to SIM during takeoff and landing. Correct me if I am wrong please. Again thanks for answers guys.
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There just isn’t a reason to set it to off. Sim won’t let you employ anything. So why go off on the ground and then have to go to sim right after getting airborne to do your weapon check? Just put it in sim from the get go. And as for ferry flights etc, just use sim out of habit. Off doesn’t add anything. The only time I would set off is if I had some kind of weapon malfunction like a runaway gun or something. And even then sim would probably accomplish the same thing.
Mhm, IMHO Tomcat has it. It’s a “SOP thing”.
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Ok then, thanks.
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@mhm:
Thanks for the answers guys. Also, I do not remember where I have read but the position of the Master Switch effect the ejection time of the seat. If Master is ARM or SIM, ejection happens right away after handle pulled(no delay). But if Master ARM is SAFE ejection needs 1 second delay. The reason behind this I believe was preventing unwanted or accidentally ejection. This may sound awkward but I remember something like this. This might be the reason for putting the Master ARM to SIM during takeoff and landing. Correct me if I am wrong please. Again thanks for answers guys.
Master arm has nothing to do with ejection.
The only delay I know of is in a 2 seater that’s configured for a dual ejection (there’s a switch in the rear cockpit) so the front seat delays slightly so the rear seat can go first.