A35K weird behavior

Support
1

Device: iPad Air 5th gen
Operating system: iPadOS 26.5

Infinite Flight Version: 26.3

Issue Summary

The A350-1000 appears to have multiple flight control and autopilot-related issues that make the aircraft extremely unstable and difficult to fly. Based on my previous experience with the A350-900, this behavior is not expected and feels specific to the A350-1000 in v26.3.

Observed Issues

1. Excessive Autopilot (V/S) Corrections

  • When setting the Vertical Speed (V/S) to a normal climb rate of around +1500 to +1800 fpm (maximum tested: +2000 fpm), the aircraft frequently overcorrects its pitch attitude.
  • Instead of maintaining a stable climb, it often begins to sink unexpectedly, causing a significant loss of airspeed.
  • In most cases, I had to disconnect the autopilot and manually recover the aircraft.

2. Erratic Vertical Speed After Re-engaging Autopilot

  • After manually recovering and re-engaging the autopilot, the selected V/S becomes highly inconsistent.
  • I repeatedly observed unexpected values such as:
    • Approximately -2800 fpm during an uncommanded descent.
    • Approximately +4200 fpm during an excessive climb.
  • These values were never selected manually and appear to be commanded by the autopilot itself.

3. Autopilot Appears to Override Manual Inputs

  • During several recovery attempts, it felt as though the aircraft was continuously trying to counteract my manual control inputs.
  • Even after disconnecting the autopilot, the aircraft did not respond naturally, making it difficult to stabilize and regain full control.

4. Repeated Stall Warnings During Recovery

  • While attempting to recover from the excessive pitch changes caused by the autopilot, the aircraft generated multiple “STALL” warning callouts.
  • These warnings appeared to be a direct consequence of the unstable autopilot behavior rather than normal aircraft handling.

5. LNAV Navigation Issues

  • LNAV was unable to consistently follow the programmed flight path.
  • The aircraft frequently deviated from the intended route instead of accurately tracking the flight plan.

6. Uncommanded Right Roll

  • Even with LNAV disengaged, the aircraft consistently tended to bank to the right without any intentional control input.
  • This occurred multiple times throughout the flight and required continuous manual correction.
2

You haven’t updated to 26.3 - you wouldn’t be having half those issues relating to the autopilot otherwise.

The A350-1000 is technically accessible in 26.2 - but due to autopilot changes it’s essentially broken. The LNAV issue has been reported below (although I can’t repro it):

This sounds like a calibration issue. Make sure the aircraft is flying level then re-calibrate.

3

I’ll try to recheck again on another flight, though i was on the 26.3. Having said that even post device calibration the banking happened, so its something do with the controlling of the aircraft

4

Your two most recent flights were on 26.2. Please update to 26.3.