Quick question,If the FMC calculates V2 at 148 do I put this speed in theIAS/MACH window, or do I add the +20 (168) myself.Also when my initial climb is at 168 knots it seems my nose is ataround 20 deg to maintain that initial speed until I bump it up to around 220 where I start my flap retraction, not sure if this is thecorrect procedure.ThanksPaul Cartier

Add the 20, because if you have LNAV engaged prior to takeoff, when you switch autopilot on for lateral control with the FMC at 400ft AGL it will hold the selected speed until desired. Stay at V2 + 20 with flaps until 3000ft AGL, manually controlling vertical nav, then 'bug up' to the clean speed and retract flaps according to the PFD and finally engage VNAV.Cheers,Geoffrey BaleanCanberra, AU (YSCB)http://www.hifisim.com/images/as2004proudsupporter.jpg http://www.precisionmanuals.com/images/forum/800driver.jpg"Today is the tomorrow you worried about yesterday. All is well!"Pentium 4 2.4GHZ, P4G8X Deluxe with Broadcom NetXtreme Gigabit Ethernet, 512MB RAM, LG Flatron L1710S 17" LCD, GeForce MX440 Millenium Silver, Creative Soundblaster Audigy, Logitech Speakers, CH Yoke & Rudder, Quantum Fireballp AS30.0 - Basically nothing crash hot :)MSFS 2004 acof, PMDG 737 6/7/8/900, Activesky 2004, Flight One Cessna 152, SquawkBox 2.3 w/ guage, ServInfo 2.2, FS AutoStart, FS Real Time, FSUIPC 3.212 (unreg.:()

>Quick question,>>If the FMC calculates V2 at 148 do I put this speed in the>IAS/MACH window, or do I add the +20 (168) myself.Yes, V2 (148kts) allways goes in the MCP IAS window. Do not add +20kts to it.>Also when my initial climb is at 168 knots it seems my nose is>at>around 20 deg to maintain that initial speed until I bump it>up to around 220 where I start my flap retraction, not sure if>this is the>correct procedure.Yes, TOGA will settle down and hold V2 + 20kts, so 168kts. 20 deg deck angles are not unusal during takeoff.Floyd

Nope,Flight Director commanded speed in TO mode will be MCP set + 20.When another vertical mode is selected, MCP will reset to current + 20, or if you touch the dial, it will add / subtract the effect of your touch, + 20...As the real thingie...Try it out !anthonyAnthony MertonPrecision Manuals Developmenthttp://www.precisionmanuals.com

V2 only is correct.If you feel uncomfortable with 20 degrees, try derating your thrust for takeoff. After takeoff, the engines are fixed at a specific thrust (which can be fairly high). The A/P is given the task of maintaining a fixed V2+20 airspeed and the only way it can do this (when the thrust is fixed) is to vary aiplane pitch. This results in steep angles when the thrust is high and the aircraft is light.In real life, since you can't always increase the weight of the aircraft by loading extra passengers, fuel and cargo, you will have to decrease the thrust by a fixed amount (e.g. by entering a higher SEL temp into the FMC).Hope this helps.Cheers.Ian.

This thread is unteresting to say the least ;-) You only set V2 in the IAS/MACH window on the MCP. Why you ask?BECAUSE the F/D is commanding V2+20 that YOU must follow. The WHITE BUG on the spd tape is the V2+15 at which time one can go from flaps 5 straight to 1 if they desire. So whenever anyone tells you that you set or must set anything other than V2 remember this thread. Like Ian said one can and SHOULD do re-duced takeoffs whenever possible (which should be most of the time) this will reduce the climb rate amounst other things like save on engine life. It is NORMAL to pitch to 18 degrees or there abouts to follow the F/D. [h4]Best Wishes,Randy J. Smithhttp://www.precisionmanuals.com/images/forum/betaimg.jpgAMD 64 3200+ | ASUS KV8 DELUXE | GFORCE 5700 ULTRA @535/1000 | WD SATA 80 GIG | 512 DDR 400 |

Hi Geoffrey, why 3000ft and not 1500?Souldn't we start flap retraction at that altitude to be in complaince with noise abatement procedures?Thanks,David

I'm just curious, is this working the same way in the 800/900 as in the 600/700? I remember that the older one added the 20 kts to my set speed, but still haven't seen this in the 800/900... It could however just be me though :-)rgrds fredrik granfors

"I remember that the older one added the 20 kts to my set speed, but still haven't seen this in the 800/900... It could however just be me though"In my version, the speed is being set to V2+21. Anyway, I've brought this to the attention of the PMDG team.Cheers.Ian.

It should only change from V2 in the MCP IAS window IF one touches the speed dial while manually dialing in flaps up speed (just moving ONE digit increases it 20 knots automatically in this situation like the real deal). Ian, you mean when you SET the speed it jumps 21 knots correct? I DOUBT anyone will ever dial in anything BUT flaps up speed but for it to change you must MOVE it to 1 knot then it adds 20 right? N0ot really an issue IMO.EDIT: AND when someone selects a AP mode like LVL CH where the IAS window will add + 20 to V2 [h4]Best Wishes,Randy J. Smithhttp://www.precisionmanuals.com/images/forum/betaimg.jpgAMD 64 3200+ | ASUS KV8 DELUXE | GFORCE 5700 ULTRA @535/1000 | WD SATA 80 GIG | 512 DDR 400 |

"Ian, you mean when you SET the speed it jumps 21 knots correct? I DOUBT anyone will ever dial in anything BUT flaps up speed but for it to change you must MOVE it to 1 knot then it adds 20 right?" Hi, Randy.Moving it one notch should change the value in the window from the previously set V2 to V2+20. In PMDG, moving the knob one notch will move it to V2 plus 1kt (one notch) plus 20.... a total of V2+21. A PPRuNe pilot confirmed that the first statement (above) is true on the real aircraft.Similar logic is found on other glass cockpit Boeings... You will move a knob one notch and the display will, say, appear if it was blank before, but will not change the value one unit.Hope this helps.Cheers.Ian.

While of course you are correct Ian. I just wanted to make sure ;-). This reminds me the the REF selection switch which should SHOW 80 when you move the selecter but it use to go to 81 but LK fixed it after my askin ;-) and I am sure this one is not a big deal to do.[h4]Best Wishes,Randy J. Smithhttp://www.precisionmanuals.com/images/forum/betaimg.jpgAMD 64 3200+ | ASUS KV8 DELUXE | GFORCE 5700 ULTRA @535/1000 | WD SATA 80 GIG | 512 DDR 400 |