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jagman

747 go-around

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Hi all

Can anyone tell me the proper procedure for a go-around from final approach configuration please ?

 

David

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If on final, and you get a Go Around condition, your proceedure varries some depending on how much automation you are using. First lets assume full auto approach.

 

Step 1 is to hit the TO/GA button. This will tell the navigation and the auto-pilot system to abort approach and go missed. Throttles will automatically advance to max N1/EPR for TOGA mode.

Step 2: Set up AC to follow missed approach proceedures (easier with two pilots then one) raise flaps one notch, tune MCP to missed approach altitude (should already be there on approach anyway). Declare, "Going Around" to ATC.

 

Step 1 and 2 should be done in about 5 seconds or less in real life.

 

Step 3 Set MCP to Missed Approach speed as called for by each airports policies (this is why pilots brief before desent) and retract flaps at normal speed intervals.

 

Step 4: Most missed approaches involve several waypoints and then a hold around a VOR or waypoint. Once enroute or in the hold prepare the aircraft for subsequent approach and await ATC direction.

 

Now the steps are the same regardless of automation level, however, you may just have to do more work yourself such as tuning radios, advancing throttles, and obviously navigating. I love practicing missed approaches in bad weather at difficult airports. Hop in the NGX and go missed with zero visibility at Tagucigalpa (MHTG) and it will literally give you white knuckles. As in real life, the most important step, I didn't list. FLY THE PLANE FIRST!

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First put 200/4000 for go around in FMC after the runway. This way it will never exceed 200 kts on GA and you will not bust holding speed in the hold. Otherwise it's preprogrammed in FMC to start acceleration to 250 kts. and you will have to Speed intervene and dial it down to 200kts or whatever speed you want. 4000 or what ever it is is your GA altitude is already in FMC. Push TOGA, at positive rate Gear up, Flaps 20 and follow Flight Director, at 250' you can push Autopilot L/C/R CMD, at 400' AGL push LNAV or HDG and at 1000' push VNAV.

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Thanks for the advice guys.....clearly there are some differences according to precise circumstances.

 

David

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