Thrust Lever Disagree A320

[Easy goes it]

Hi everyone

Just a quick question that came up in the sim recently... With thrust lever disagree on engine 1 after selection of flaps 1, engine 1 goes to idle thrust. After going around and selecting flaps to 0 engine 1 remained in idle thrust for the duration of the flight. We tried resetting A/THR and selection of Toga even shutting down engine 1 and restarting it.. Nothing worked!

Is there any way to regain thrust from engine 1 after the go around?

Also my interpretation is that in the unlikely scenario of having a problem with engine 2 (bird strike etc) your only option is to land flapless to have control of engine 1????

Is this correct?

[Permafrost_ATPL]

Did you try and pull the FADEC's CB or the CB of the bus that powers the corresponding channel? In real life of course you'd check with engineering first, unless you were desperate.

[Easy goes it]

Hi Permafrost

No we did'nt pull and rest any CB's, I think shutting down and restarting the engine will force FADEC to go across to the other channel.. which we tried.
The problem was Alpha floor was inhibited when we went to one engine.. so it ended up in essence a dual engine failure when flaps were extended.

[Okivan]

I did this item in simulator couple of times ,
How we managed it was assuming like an engine fail.its just a matter of handling not so many presure on you cause it is still supplying the rest , except thrust.
And i remember one time , one of our smart instructor :\ , gave engine fail #2 after take off , and when we were dealing with it during holding he gave Thurst Lever Fault #1
So he was ttrying to get us lose both thrust during aproch when we selected flaps1:D
But no := we didn'buy it so , we dealed it like a slat flap jam.
Going around and retracting flaps doesn't work.
And PLEASE don't think or do any CB pulling other than written in the QRH especially Fadec it may cause sooo much trouble than you think,and you probably will be questioned about this wise disicion.
May be we can think of why airbus has decided it to come to idle when flaps is selected.
They could advise to make an auto land since it works fine while the A/THR is on , or if Autoland is not possible ,eng master off when thrust idle.
Or a combinaiton of these what do you think?

[BBH]

In case of THR lever failure FADEC will keep the last effective thrust (cruise, Gdot ...), to allow a normal spoolling up time in case of GO AROUND Airbus has programmed FADEC to reduce engine affected with THR lever malfunction to idle at F1 extension like this final will look like an ENG OUT one with immediate response on engine non affected by failure if needed.

If you have failures on both as OKIVAN got ,fly a NO SLATS NO FLAPS approach :D

[Permafrost_ATPL]

Very useful stuff, thanks gents.

[Beeline]

Interesting fact regarding F1 and engine spool down to idle. Any chance of an FCOM ref for that please.

Surely a disconnection of A/THR to ensure stable spool down before slat ext or just a Flaps 0 landing would be safer??

Having seen this defect from an engineering perspective as it is a TLA resolver problem it usually occurs on taxi out, take off, movement of thrust levers.

[Easy goes it]

Thanks for the info everyone..
Beeline the FCOM reference PRO-ABN-70 P48 ENG1(2) THR LEVER DISAGREE

[AVApilot]

One question though, when treating this situation like a slat flap jam, am I right to say that you must not select Flaps 1 for the approach?
QRH says that when flaps and slats jammed at 0, the flap lever position for landing is 1, but if you select flaps 1 the remaining engine will go to idle thrust, so treat it like a slat flap jam at 0 but don't select flap lever to 1?

Is this correct or am I missing something?

[hoverman2002]

(Quote)
One question though, when treating this situation like a slat flap jam, am I right to say that you must not select Flaps 1 for the approach?
QRH says that when flaps and slats jammed at 0, the flap lever position for landing is 1, but if you select flaps 1 the remaining engine will go to idle thrust, so treat it like a slat flap jam at 0 but don't select flap lever to 1?

Correct, but, the engines spool down when the SLATS INDICATED in position 1, not the flap lever.

The secound point, when one engine out and the other one with thrust lever fault, configure late, if too early, activate ALPHA FLOOR, i know close to the ground (above 50 ft), but your last chance to get power back. Be aware, the remaining engine is now under TOGA thrust, there is time limited. In this case, take time for approach briefing and think about early....

[guclu]

FOR LDG......................................................USE FLAP 1
With FLAPS lever set at 1, AP/FD GO AROUND mode is
available.

If you do not select Flap 1 for the approach and you want to make a go around then back to basics ! (no srs mode)

[AvEnthusiast]

The other day our A320 when started the take off role Engine#1 was lagging behind. Stopped all parameters where checked power added to Flx, TOGA everything was normal then take off roll started again at 140 kts egnine# lost thrust.
the next day when a go-around was initiated engine# not producing thrust after 10 sec thrust lower than engine# 2. and on the ground no thrust increase. then for the ferry flight the engine was ok. Can it be the same TLA resolver problem. I mean the TRA. but for this we don't get any Ecam messages or chk amber message on ecam next to N1 or N2?

[Natstrackalpha]

Aww, Man! Am way behind . . !!

What gives Eng 1 idle when F1 selected - wheres the comnnxion, am way out here , , ?! Is it FAC its godda bi

The more I study, the better I get, the more I read pprune, the worse I obviously am - hail the realms of academia . . :mad:!

[ask26]

Regarding the THR LEVER FAULT, is there a way of disabling the Slat Channels via CB's so that you could land Conf 3 and keep the A/T for the approach and a lower Vls for landing?

[flyingchanges]

Wow, this is such an improvement over cables...

[Rocket3837]

Hi all
Yes u have to land without S/F.
It also depends on how old yr A320 is. Ours is very old and the programming is different than the new A320. On our A320, the engine will not idle when slats are out but the procedure ask for shutting down the affected engine at 500 ft or do an Autolanding.

It is worth noting that on A330/A340, you will be able to recover the engine after go-around once the slats are in.

[Jwscud]

This discussion is yet another reminder of why I'm glad I don't fly the bus!

[Oceanic815Pilot]

Haha. In China they trained us to do the dual thrust lever fault with the AP/ATHR on until established on the glide slope at 1000' and green dot then configuring on final for a flaps full or three landing at idle thrust.

[tdracer]

Wow, this is such an improvement over cables...

Since throttle cables never, ever broke :sad: (one particularly scary example ~ 30 years ago, Air France 747 Hull loss when an outboard engine throttle cable broke when the selected reverse - the engine when to full forward overboost and they made a hard right turn off the runway at 117 knots :eek:)

That being said, I do prefer the Boeing way of letting the actual throttle lever position control the engine thrust...

[MD83FO]

how can we disable slat extension.

[pilot135]

Think of SFCC and pull the associated cb.

[sonicbum]

Think of SFCC and pull the associated cb.

Are you serious ? It's forbidden. Read the Computer reset tables guidelines.
Guys unless you are test pilots conducting test flights just stick to your procedures.