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A220 fails to capture localizer with APPR armed

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Hi, I’m experiencing an issue where the Synaptic A220 does not capture the ILS localizer.

I had the correct ILS frequency and course tuned, was established on an intercept heading in HDG, and had APPR armed.

The aircraft approached and then crossed through the localizer without capturing it. The FMA remained in HDG and never transitioned to LOC guidance.

I also did not capture the glideslope afterwards.

Simulator: MSFS 2024
MSFS version: 1.7.35.0
Aircraft: Synaptic A220-300
A220 version: 1.0.3
Platform: PC
Airport/runway: [CYUL/ILS 24R]
Navdata: [Navigraph]

I have attached a screenshot showing the aircraft with APPR armed before localizer intercept.

Is this a known issue, or is there any additional information/logging I can provide?

Snímek obrazovky 2026-08-07 115713.png

  • Staff
3 hours ago, Emmanuel said:

Hi, I’m experiencing an issue where the Synaptic A220 does not capture the ILS localizer.

I had the correct ILS frequency and course tuned, was established on an intercept heading in HDG, and had APPR armed.

The aircraft approached and then crossed through the localizer without capturing it. The FMA remained in HDG and never transitioned to LOC guidance.

I also did not capture the glideslope afterwards.

Simulator: MSFS 2024
MSFS version: 1.7.35.0
Aircraft: Synaptic A220-300
A220 version: 1.0.3
Platform: PC
Airport/runway: [CYUL/ILS 24R]
Navdata: [Navigraph]

I have attached a screenshot showing the aircraft with APPR armed before localizer intercept.

Is this a known issue, or is there any additional information/logging I can provide?

Snímek obrazovky 2026-08-07 115713.png

Hi,

Thank you for the detailed report.

We do have a few similar cases logged internally, and this appears to be one of the A220's current quirks. At present, the ILS logic tends to behave more reliably as the aircraft approaches or passes the Final Approach Fix (FAF).

For your next flight, I recommend the following procedure:

  • As you approach the intercept angle, arm NAV while still in HDG mode. This allows the aircraft to sequence and track the published approach fixes correctly.

  • As you approach the FAF, arm APP mode.

  • If the aircraft does not immediately capture the glideslope, you may need to use V/S to manually descend until GS capture occurs.

I've also flown this exact approach and observed similar behavior. In my testing, the aircraft did not fully capture the localizer and glideslope until approximately 2,000 ft, so what you experienced does align with my testing.

I'll ensure your feedback is added to the existing reports for the Synaptic team to review.

Hope this helps. Thanks!

Kyle - Community Manager

iniBuilds Ltd. | inibuilds.com

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