Auto Throttle not working during cruise?

[Brit 3]

Hi guys

 

Bit of a problem with my latest flight from Paris to St Marten.

 

Basically the thrust is stuck at 84.3 N1 and will not increase to reach the cruise speed (.84). I can manually increase the throttle to stop the plane from stalling.

 

This has never happened before and was wondering if anyone else has had this issue?

[Don t moderate me this way 882]

What were your FMC A/T options:

 

- never override throttles (by hardware thrust lever angle)

- override in HOLD mode only

- always override?

[Brit 3]

I had to override it manually otherwise i would of stalled as like i said the N1 is stuck at 84.3 when A/T is engaged, it doesn't respond or increase throttle like it should to reach cruise speed.

[Don t moderate me this way 882]

There are simulation options included in the FMC, where you can allow, or disable, your hardware throttles to override the commanded autothrust:

 

Imagine, autothrust commanded by the T7 was o.k., but some small movement of your physical thrust lever(s) overrode it ...

[Boeing or not going 578]

The airplane doesn't always fly at exactly cruise level speeds. It is very dependent on winds, temperature, cost index, etc.

[Brit 3]

That's true but that's not the problem, the auto throttle isn't increasing the N1 to get to cruise speed.