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-   -   737 Go-Around question (https://www.pprune.org/tech-log/612230-737-go-around-question.html)

RVF750 29th Aug 2018 17:34

Chesty, I wouldn't be so confident it will go into ALT AQQ if you press TOGA just below the MAA. As the aircraft ramps up thrust and pitches up, there is a definite chance it will be unable to capture the MCP selected alt and sail through. By de-selecting the ILS and using appropriate modes you will gently, and calmly be able to manage a level off and lateral navigation to the fix. It's just so easy to do. Why you'd insist on pressing TOGA in this case is beyond me. It just sets you up for a handful of trouble. Then again, if you work for the same company as me, I would understand it quite well....

poldek77 29th Aug 2018 20:15

When we look again at ILS 26 at ESSA: Final Approach Point is at D7.5/2500' and missed approach procedure says CLIMB 1500'. If I go around from let's say 2000 feet then I am simply not able to comply - it is quite difficult to climb from 2000 to 1500 ;). I hope ATC is aware of that and can provide alternate instructions immediately.

Chesty Morgan 29th Aug 2018 22:13


Originally Posted by RVF750 (Post 10236584)
Chesty, I wouldn't be so confident it will go into ALT AQQ if you press TOGA just below the MAA. As the aircraft ramps up thrust and pitches up, there is a definite chance it will be unable to capture the MCP selected alt and sail through. By de-selecting the ILS and using appropriate modes you will gently, and calmly be able to manage a level off and lateral navigation to the fix. It's just so easy to do. Why you'd insist on pressing TOGA in this case is beyond me. It just sets you up for a handful of trouble. Then again, if you work for the same company as me, I would understand it quite well....

I haven’t insisted on anything.

Capn Bloggs 30th Aug 2018 00:14


Originally Posted by Poldek
When we look again at ILS 26 at ESSA: Final Approach Point is at D7.5/2500' and missed approach procedure says CLIMB 1500'. If I go around from let's say 2000 feet then I am simply not able to comply - it is quite difficult to climb from 2000 to 1500 https://www.pprune.org/images/smilies/wink2.gif. I hope ATC is aware of that and can provide alternate instructions immediately.

Poldek, I am sure that procedure was written assuming you were below the MAA. Let's not get too literal...

underfire 30th Aug 2018 02:40


Poldek, I am sure that procedure was written assuming you were below the MAA.
It is written, assuming you are following the procedure.


When we look again at ILS 26 at ESSA: Final Approach Point is at D7.5/2500' and missed approach procedure says CLIMB 1500'. If I go around from let's say 2000 feet then I am simply not able to comply - it is quite difficult to climb from 2000 to 1500 ;). I hope ATC is aware of that and can provide alternate instructions immediately./
Poldek, the DA for ILS 26 at ESSA is 460/490, (CAT A/B).
If you want to GA at 2000, you still need to follow the procedure. That means follow the flightpath including the missed approach procedure. What does the procedure tell you to do? CAT A or CAT B, follow the flightpath to 430/460, then turn right and climb to 1500.
IF you are at 2000 and you cannot continue as noted above (the procedure), then you are not on the approach procedure, and must inform ATC that you are discontinuing the approach, and ask for further instructions.

Bottom line, you are on a procedure and are cleared for that procedure. Follow it. You cannot simply follow parts of it. Follow it as presented, or get permission to do something else. You cannot GA at 2000 when the DA is at 460, and expect to follow the simplistic "turn right onto 300 and climb to 1500" without instruction, you are, afterall, turning into the flightpath for RW19....(and that runways missed approach procedure)

B737900er 30th Aug 2018 09:10


Originally Posted by underfire (Post 10236876)
It is written, assuming you are following the procedure.



Poldek, the DA for ILS 26 at ESSA is 460/490, (CAT A/B).
If you want to GA at 2000, you still need to follow the procedure. That means follow the flightpath including the missed approach procedure. What does the procedure tell you to do? CAT A or CAT B, follow the flightpath to 430/460, then turn right and climb to 1500.
IF you are at 2000 and you cannot continue as noted above (the procedure), then you are not on the approach procedure, and must inform ATC that you are discontinuing the approach, and ask for further instructions.

Bottom line, you are on a procedure and are cleared for that procedure. Follow it. You cannot simply follow parts of it. Follow it as presented, or get permission to do something else. You cannot GA at 2000 when the DA is at 460, and expect to follow the simplistic "turn right onto 300 and climb to 1500" without instruction, you are, afterall, turning into the flightpath for RW19....(and that runways missed approach procedure)



Underfire - What would you do if there was an approach ban? or the RVR is below minima? You dont make any turns until you are at the missed approach point.

The fact you a telling us if you were told to go around or cancel the approach above the MAA you would continue to DA tells us all you obviously dont fly commercial operations or dont have a good understanding.

Look at LEPA/PMI plates they have a low go around altitude also.

Ive also had to cancel an approach in BCN and was still asked to descend to a lower altitude when I was already in APP mode - to allow for a vueling A320 to cut in. The above method mentioned above worked in this case.

poldek77 30th Aug 2018 09:34


Originally Posted by underfire (Post 10236876)
(...) You cannot GA at 2000 when the DA is at 460,

That's interesting. Any reference please...?

RVF750 30th Aug 2018 20:30


Originally Posted by Chesty Morgan (Post 10236781)

I haven’t insisted on anything.

I stand corrected and apologise.


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