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No it's not.That's the stall protection system kicking in.The AC is flown too slow.anthonyAnthony MertonPrecision Manuals Developmenthttp://www.precisionmanuals.com

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You know what an anti-stall protection system is, don't you ? ... or not... ?anthonyAnthony MertonPrecision Manuals Developmenthttp://www.precisionmanuals.com

Lol, that's why his friend did not have a clue about what's going on here. You are STALLING, SPEED UP, there is nothing wrong with the aircraft... [h4]Best Wishes,Randy J. Smithhttp://img.villagephotos.com/p/2003-8/196432/winglets_lg.jpg [h3] AMD XP 2200 |MUNCHKIN 512 DDR RAM |ECS[/b ][i] K7S5A MB[/i] |GF2 MX 32 MEG and still runs GOOD!|WIN XP PRO |MITSUBISHI DIAMOND PLUS 91 19"[/h3]

Randy J Smith

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:-lol :-lol :-lol

I7-10700F RTX 3070 32 Gig Ram

Guys,The flap speed bugs on PMDG's B737NG behave just like the real thing. They did a good job on this. If you want to know how to use them properly, read on...DECELERATIONYou should be at the clean speed (UP bug) before deploying flaps 1. Then the flaps 1 bug appears so you can decelerate to that speed. Makes sense doesn't it? Then when reaching flaps 1 speed, deploy flaps 5... and hey, the flaps 5 bug kindly appears to tell you what speed to slow to. The usual flap sequence is 1, 5, 15, 30. Flaps 1 is usually just used while slowing to the flaps 1 speed, you should then deploy straight to flaps 5 ready for LOC intercept.In two crew ops, Pilot Flying would call for the flap setting, wait to check that the flaps are moving and only then would lower the MCP speed. For a smooth deceleration, don't wait until reaching a flap bug speed before setting the next flap as this will cause the autothrottle to come in. Instead, deploy the next flap setting ten knots earlier and then lower your MCP speed to the next flap bug.ACCELERATIONThe real B737NG will not show the bug for the current flap setting while the white V2+15 bug is displayed for takeoff (except for a flaps 1 takeoff). Again, PMDG have this spot on (apart from the white V2+15 bug disappearing before first flap retraction but this is a known issue).Let's consider a normal flaps 5 takeoff. You won't see the flaps 5 bug. You don't need it anyway, as you'll be concentrating on maintaining V2+20. When you initiate the acceleration for flap retraction, you should go to flaps 1 as soon as the speed rises away from V2+20. Then put the flaps up when you reach the flaps 1 bug and continue accelerating to the clean speed (UP bug) or beyond.It all makes sense really ;)

To be completly honest here Neil the flap bugs are off a *Tad*. The flaps 5 TO is one example of this. The white bug disappearing at the wrong point etc. I am suprised that Ian never caught this, I will have to minus 10 points from his forum chart lol...[h4]Best Wishes,Randy J. Smithhttp://img.villagephotos.com/p/2003-8/196432/winglets_lg.jpg [h3] AMD XP 2200 |MUNCHKIN 512 DDR RAM |ECS[/b ][i] K7S5A MB[/i] |GF2 MX 32 MEG and still runs GOOD!|WIN XP PRO |MITSUBISHI DIAMOND PLUS 91 19"[/h3]

Randy J Smith

In the UK our radio procedures on an ILS affect the use of these buttons.Say we're on a radar vector to intercept the localiser. Approach will say something like "Closing the localiser from the right, report established". It's important to realise that at this point, we're not cleared for the approach and so cannot descend. We should therefore use the VOR/LOC button only.Once we've called "Localiser established", Approach should come back and say something like "Roger, descend on the ILS and contact Tower on xxx.xx". Only then should we press APP to arm G/S pitch mode.Slightly different to the US style of giving a localiser intercept heading and saying "maintain xxxx feet until established, cleared for the ILS xxx approach".The UK system sometimes screws up. I was once handed to Tower before being cleared to descend and then couldn't get a word in on the Tower frequency to request descent. I went sailing past the FAF before I was cleared down. Good job it was VMC and I was in a light aircraft ;) I learnt a lesson there to make sure Approach clears me down before handing me to Tower.

"I will have to minus 10 points from his forum chart lol..."I have a chart????? :-lolI hope that's a real airline option? :(Re my chart.... Blood pressure looks a bit high, but otherwise fine :-)Cheers.Ian.P.S. BTW, Neil posted his first message on the disappearing white bug a few seconds before I was about to post mine on the same subject... I didn't want to repeat what had already been said ;-)

Aha, I knew that the white bug disappearing early makes the flap 5 bug appear incorrectly on a flaps 5 takeoff... but what else is wrong with the flap bugs? :-hmmm

In a flaps 5 TO and BELOW 1600' the white and 1 bugs are there but dissappear above 1600'. This is being OR fixed already and should be in the next patch. [h4]Best Wishes,Randy J. Smithhttp://img.villagephotos.com/p/2003-8/196432/winglets_lg.jpg [h3] AMD XP 2200 |MUNCHKIN 512 DDR RAM |ECS[/b ][i] K7S5A MB[/i] |GF2 MX 32 MEG and still runs GOOD!|WIN XP PRO |MITSUBISHI DIAMOND PLUS 91 19"[/h3]

Randy J Smith

Ahhh, but I brought up the disappearing white bug about two weeks ago in my thread about speed bugs on takeoff.Can I have Ian's ten points Randy? :-lol

Great stuff, Neil, thanks."Then put the flaps up when you reach the flaps 1 bug and continue accelerating to the clean speed (UP bug) or beyond."I guess different horses for different courses. Other aircraft/airline AOM's may actually prohibit you from retracting flaps before actually reaching the required flap manoeuvering speed. With the 737, the flaps/flap increments seem to be bunched tightly together, so this risk is much lessened.Cheers.Ian.

Lol yeah but you said the flaps 5 bug is not displayed on a flaps 5 TO which it really is ;) Ok 5 points hehe..[h4]Best Wishes,Randy J. Smithhttp://img.villagephotos.com/p/2003-8/196432/winglets_lg.jpg [h3] AMD XP 2200 |MUNCHKIN 512 DDR RAM |ECS[/b ][i] K7S5A MB[/i] |GF2 MX 32 MEG and still runs GOOD!|WIN XP PRO |MITSUBISHI DIAMOND PLUS 91 19"[/h3]

Randy J Smith

Hi Ian,I agree. I was taught that method could be used only during an acceleration... which backs up your reasoning about the flap speeds being close together.

>> Lol yeah but you said the flaps 5 bug is not displayed on a>flaps 5 TO which it really is ;)>Quote from Boeing 73V-EZY (easyJet) manual:"When the V2+15 bug is displayed for takeoff, the flap maneuvering speed bug for the current flap setting is not displayed, except for flaps 1 takeoff"Have you got information to the contrary?

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