Originally Posted by
Jumpjim
Which FCOM bulletin are you referring to?
If you’re referring to BAB-61, that deals with the aircraft entering a stabilisation mode following loss or degradation of the ILS signal. It is not a software bug....
My Company’s version of the FCOM is tailored for my Airline and therefore our FCOM Bulletins will have different numbers (but I assume the dates should be the same).
The FCOM Bulletin you’re referring to regarding the attitude stabilising mode is not the same Bulletin I’m referring to. In my FCOM, the attitude stabilising mode Bulletin is dated 18Oct19 and titled “Erroneous Autopilot Flight Director System (AFDS) Guidance when Instrument Landing System (ILS) Signal Interference occurs”. You are correct this is not a software issue.
The Bulletin I’m referring to is dated 18Dec19 and titled, “Localizer Capture Anomalies.” This is a software issue.