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-   -   Stabilized APP (https://www.pprune.org/tech-log/403710-stabilized-app.html)

Capn Bloggs 29th January 2010 12:55


Has anyone suggested they must go around due to a change of flap setting? Er..No
That is how Post 7 reads.

Denti 29th January 2010 13:07



On a 737 you need to go to Flap 15 for single-engine landing due to drag from 30/40 Flap.
May not be necessary depending on several factors. See 737 FCTM page 5.20 under heading "Engine Failure on Final Approach". Basically, it says if the approach is continued and sufficient thrust is available continue the approach with landing flaps.
True, additional to that is the 737 (at least the NG) certified for flaps 30 single engine approaches and landings including CAT IIIa so there is no real performance problem to begin with, at 700 you are a tad late but at 800 you still could do a normal one engine out autoland if you are afraid of your own performance, which of course should never happen in the first place, but that is another topic.

Avenger 29th January 2010 14:51

Bloggs, In fairness to the Gusset, post 7 doesn't read as you suggest, the implication is that you do not need to change flap.

I agree you would be wise to remain in the current config in the circumstances outlined, IF you did change flap, AND could not stabilize, the proper action is to execute a missed.

TyroPicard 29th January 2010 17:33

Gusset.. how long has the 737 been a "heavy jet"?

Birds tend to fly in flocks - I would land.

Track 30th January 2010 10:35


True, additional to that is the 737 (at least the NG) certified for flaps 30 single engine approaches and landings including CAT IIIa so there is no real performance problem to begin with, at 700 you are a tad late but at 800 you still could do a normal one engine out autoland
Must be a company specific operation because we are limited to single engine Flaps 15 landing (for a prepared single enigine approach) and Cat 1 only,no autoland.

In this case our policy is to land without config changes.

NVpilot 30th January 2010 14:28


Apart from the quip, what is your contribution or thoughts on this debate? By Kirks gusset
Ok I see wher you are comming from now, as I indicated no disrespect. :)

Our SE landing configuration here is no different than when both are running, so I would continue with the landing.

Denti 30th January 2010 17:09

@Track, not company specific, just an option you probably have to pay for. The flaps 30 OEI performance data should be available for all models, the OEI autoland is part of the fail operational package which includes approach, landing, rollout and go-around with full rudder authority for the autoflight system.

BarbiesBoyfriend 30th January 2010 17:24

Many moons ago, we used to do the old 'dive and drive'.

No issues, that I recall.

Had to be able to fly the plane tho. And believe me, that is a big ask these days.

Centaurus 31st January 2010 03:02


Had to be able to fly the plane tho. And believe me, that is a big ask these days.
You are not wrong. Almost Air Force Cross (AFC) material with some nervous nellies..


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