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A320 SRS engagement

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Old 10th Oct 2022, 04:28
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A320 SRS engagement

Hi guysI noticed a change in FCOM about engagement of SRS mode in go around(similar change for takeoff). Quoted below:
SRS GA engages when all of the following conditions are applicable:
  • The flight crew sets at least one thrust lever to the TOGA detent
  • The slats or the flaps are extended
  • The aircraft is airborne, or on ground for less than 30 s.
​​​Previously it required only the flap lever positioned atleast at 1 and not the surface itself. Does any one of your FCOM have the same? It's mistake in my opinion.

​​​​​​

​​​​​​


Last edited by vilas; 10th Oct 2022 at 05:46.
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Old 10th Oct 2022, 08:51
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The A380 FCOM states the following:

”The slats/flaps configuration (based on the real position or flaps lever position) is different from the clean configuration”
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Old 10th Oct 2022, 12:42
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Originally Posted by PGA
The A380 FCOM states the following:

”The slats/flaps configuration (based on the real position or flaps lever position) is different from the clean configuration”
I should have mentioned I was talking about A320 FCOM. A380/A350 VFE comes from actual surface position and not from lever position like A320. But my question is for engagement of GA mode.
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Old 10th Oct 2022, 15:29
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Same here.
Only in FCTM normal procedures GA phase activation can I find:

If the thrust levers are set to the TOGA detent with the flaps LEVER at 0, the following will occur:

AP/FD remain in appr/ ldg phase
etc…


deten the thrust levers are set to the TOGA detent with the FLAPS lever at 0, the following occur:t with the FLAPS lever at 0, the following occur:
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Old 10th Oct 2022, 15:42
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Originally Posted by 8314
Same here.
Only in FCTM normal procedures GA phase activation can I find:

If the thrust levers are set to the TOGA detent with the flaps LEVER at 0, the following will occur:

AP/FD remain in appr/ ldg phase
etc…

r:
You will find in FCOM in autoflight approach landing, go around.
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Old 10th Oct 2022, 15:55
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I know, our FCOM says the same as your initial statement: no mention of the lever!
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Old 10th Oct 2022, 16:40
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Originally Posted by vilas
Hi guysI noticed a change in FCOM about engagement of SRS mode in go around(similar change for takeoff). Quoted below:
SRS GA engages when all of the following conditions are applicable:
  • The flight crew sets at least one thrust lever to the TOGA detent
  • The slats or the flaps are extended
  • The aircraft is airborne, or on ground for less than 30 s.
​​​Previously it required only the flap lever positioned atleast at 1 and not the surface itself. Does any one of your FCOM have the same? It's mistake in my opinion.

​​​​​​

​​​​​​
Hi Vilas, same here. FCOM MAY 22.
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Old 10th Oct 2022, 17:31
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So, if SRS does not engage with the lever at Flap 1 position if the actual surface is not deployed, have they also changed the procedure in case of flapless landing (select Flap 1 so in case of GA the SRS will engage)?
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Old 10th Oct 2022, 18:02
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Originally Posted by iggy
So, if SRS does not engage with the lever at Flap 1 position if the actual surface is not deployed, have they also changed the procedure in case of flapless landing (select Flap 1 so in case of GA the SRS will engage)?
That's the problem. Nothing else has changed. Even FCTM talks about lever not the surface.
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Old 10th Oct 2022, 18:10
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Has somebody in Toulouse thought that we don’t want a crew getting airborne if the slats flaps have not extended correctly which is why this change implies surface rather than lever position?
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Old 11th Oct 2022, 18:33
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Originally Posted by vilas
Hi guysI noticed a change in FCOM about engagement of SRS mode in go around(similar change for takeoff). Quoted below:
SRS GA engages when all of the following conditions are applicable:
  • The flight crew sets at least one thrust lever to the TOGA detent
  • The slats or the flaps are extended
  • The aircraft is airborne, or on ground for less than 30 s.
​​​Previously it required only the flap lever positioned atleast at 1 and not the surface itself. Does any one of your FCOM have the same? It's mistake in my opinion.

​​​​​​

​​​​​​
Hello, you may check GSOH of this chapter and find was it wording enhancement or pin programming result😉
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Old 12th Oct 2022, 05:06
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The problem is FCTM doesn't say flaps/slat but only lever out of zero. So it needs amendment. And if it's really modified then slat/flap jammed at zero procedure needs change.
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Old 23rd Oct 2022, 02:17
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My FCOM (09-SEP-22) says:

Setting at least one thrust lever to the TOGA detent engages both SRS/NAV modes, if:
- The flaps lever is at least in position 1, and
- The aircraft is in flight, or
- The aircraft has been on ground for less than 30 s (AP disengages and can be re-engaged 5 s after lift-off).
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Old 26th Oct 2022, 10:43
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I take that back. We were a bit behind but our latest FCOM has flaps/slats position rather than lever position.
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Old 7th Nov 2022, 08:38
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Originally Posted by AerocatS2A
I take that back. We were a bit behind but our latest FCOM has flaps/slats position rather than lever position.
It's was a mistake as I thought. You should be getting a correction reverting to older statement.
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Old 9th Nov 2022, 19:38
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Originally Posted by vilas
It's was a mistake as I thought. You should be getting a correction reverting to older statement.
I imagine we will get it in the next year or two.
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