A320 SRS During Windshear

[sonicbum]

Originally Posted by Sergei.a320

Hello everyone! It’s very strange how Vilas started his explanation in the correct way and made this error in his later posts. I respect him and FlightDetent and in most cases I agree with their posts. By the way :
1.Could someone provide me concrete reference from FCOM/FCTM for TOGA thrust use recommendation/precaution in suspected W/S.
2. There was SB from Airbus about W/S Det. Function and it also covers SRS logic and it states:
”In fact, FMGC orders the SRS mode engagement when:
* At least one of thrust levers is set to TOGA detention and,
-the slats are extended
-main landing gears are not compressed

OR
*At least one thrust of thrust levers is set to MCT/FLX or TOGA and,
- FLEX temp. Inserted in MCDU
-V2 inserted
-slats extended
-the aircraft has been on ground for 30 sec at least

When SRS mode is engaged and if shear conditions stress aircraft’s capability, FMGC progressively adapts pitch orders to the following survival strategy:
1. First, it controls speed to maintain speed target
2. If speed cannot be maintained,it targets +120 ft/min of vertical speed,
3. If vertical speed cannot be maintained,it increases pitch up to 22,5 deg.

Hope it helps

Hi Sergei,

Are You referring to the fact that when the predictive windshear procedure migrated from the FCOM to the FCTM the wording and format changed?
In the "old" FCOM PRO-SUP-91 Adverse Weather the use of TOGA as a precaution was specifically mentioned. In the FCTM the use of TOGA is related to the crew and/or PWS detection of the windshear.
Is that what You were thinking about?

Cheers.