piperpilot99 Posted April 9, 2022 Report Share Posted April 9, 2022 During climb, ATS fails and I can’t re engage it. Have tried TOGA/ auto throttle disconnect etc but nothing works. Any suggestions please? Quote Link to comment Share on other sites More sharing options...
rjb4000 Posted April 9, 2022 Report Share Posted April 9, 2022 Could you post a screenshot of your PFD/MFD when the failure is occurring? Quote Link to comment Share on other sites More sharing options...
piperpilot99 Posted April 9, 2022 Author Report Share Posted April 9, 2022 Sure Quote Link to comment Share on other sites More sharing options...
rjb4000 Posted April 9, 2022 Report Share Posted April 9, 2022 You need to have an N1 target for ATS to operate. Select PERF on the FMC to select an N1 target mode. 1 Quote Link to comment Share on other sites More sharing options...
piperpilot99 Posted April 9, 2022 Author Report Share Posted April 9, 2022 19 minutes ago, rjb4000 said: You need to have an N1 target for ATS to operate. Select PERF on the FMC to select an N1 target mode. Thanks for this but please can you give me a little more info on how N1 target mode is selected? Quote Link to comment Share on other sites More sharing options...
danhenri Posted April 9, 2022 Report Share Posted April 9, 2022 (edited) Thrust Limit page of PERF menu : select N1 thrust on the left side of the screen. Before landing, don't forget to select a N1 target (90 for example) on the right. It becomes blue when activated. Edited April 9, 2022 by danhenri Quote Link to comment Share on other sites More sharing options...
Pils Posted April 9, 2022 Report Share Posted April 9, 2022 1 hour ago, piperpilot99 said: Thanks for this but please can you give me a little more info on how N1 target mode is selected? ATS needs an N1 thrust limit. It doesn’t care which preset one (or a custom one in TGT), that’s up to you. Quote Link to comment Share on other sites More sharing options...
Pils Posted April 9, 2022 Report Share Posted April 9, 2022 21 minutes ago, danhenri said: Thrust Limit page of PERF menu : select N1 thrust on the left side of the screen. Before landing, don't forget to select a N1 target (90 for example) on the right. It becomes blue when activated. TO is still acceptable for landing. Quote Link to comment Share on other sites More sharing options...
danhenri Posted April 9, 2022 Report Share Posted April 9, 2022 Thanks "Pils", but on approach, the TO field is always blank when I set the N1 target. How may I get the TO preset again ? Quote Link to comment Share on other sites More sharing options...
Pils Posted April 9, 2022 Report Share Posted April 9, 2022 9 minutes ago, danhenri said: Thanks "Pils", but on approach, the TO field is always blank when I set the N1 target. How may I get the TO preset again ? It should be populated below 15,000 ft. The safest choice is a manually set TGT (e.g. 90%) as it can never be invalidated, unlike the others which are based on finite lookup tables. The thrust limit only comes into play for a go-around. Quote Link to comment Share on other sites More sharing options...
piperpilot99 Posted April 9, 2022 Author Report Share Posted April 9, 2022 Thank you I’ll try that! Quote Link to comment Share on other sites More sharing options...
danhenri Posted April 10, 2022 Report Share Posted April 10, 2022 15 hours ago, Pils said: It should be populated below 15,000 ft. The safest choice is a manually set TGT (e.g. 90%) as it can never be invalidated, unlike the others which are based on finite lookup tables. The thrust limit only comes into play for a go-around. Thanks for your answer. Have a nice sunday. Quote Link to comment Share on other sites More sharing options...
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