Hey everyone, I’m a newbie. Let’s talk about my experience with PMDG aircraft. So, when I input the full route into the FMC and fly in LNAV+VNAV mode, setting the descent altitude to 1500, everything seems fine during approach. However, the plane just sticks to 1500 feet and doesn’t automatically capture the glide slope like my smaller planes do when I hit the APP mode for landing.
I asked CHATGPT about this, and it told me that for an automatic approach, I need to choose the ILS approach because only ILS can give me that precise landing guidance. It also mentioned that around 5000 feet during descent, the glide slope will be captured. At this point, I should engage the APP mode, and the plane will follow the glide slope. Once close to 1500 feet, I should activate AP2 while keeping AP1 on, and the aircraft will take care of the entire automatic landing process.
When I asked CHATGPT about the settings for AP2, it said I don’t need to do anything specific, just activate it around 1500 feet. I’m still trying to wrap my head around that.
So, for those familiar with automatic landings, any advice for me?
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ChatGPT I am afraid can sometime provide nonsensical answers, please bear in mind the Chat GPT we have access to is not the same as the one’s the armed forces have access to, what we have is like the CBeebies version ( children’s version ) of ChatGPT.
Maximum allowable wind speeds for autoland operations:
Head Wind 25 knots
Tail Wind 15 knots
Crosswind 25 knots
Note:
Maximum allowable crosswind is 15 knots for ILS approaches
when the RVR is 2,400 feet or less. For Category II and Category
III ILS approaches the maximum allowable headwind is 20 knots
and the maximum allowable tailwind is 10 knots.
The maximum ILS glideslope angle is 3.25 degrees.
The minimum ILS glideslope angle is 2.5 degrees.
Continental
Automatic landings can be made using flaps 20 or 30 with either both engines operative or one engine inoperative. The autopilot flight director system (AFDS) autoland status annunciator must display either LAND 2 or LAND 3.
Automatic landing cannot be made if the EICAS message SLATS DRIVE is displayed.
The B777 is not certified for autolandings at weights in excess of max landing weight.
The B777 is not certified for autolandings with the loss of two or more elevator hydraulic actuators. (Loss of R or C hydraulic systems results in loss of only one hydraulic actuator. Loss of the L hydraulic system or any combination of L, C, and R results in the loss of two or more hydraulic actuators.
Can I kindly advise you to follow the tutorial? It contains every step with an explanation where needed. It also includes dozens of videos that show every step.
Could you say which airport you are using and which approach chart? Also are you using navigraph or default nav data? Occasionally some data is inaccurate and the plane can’t lock on. If you share the info above someone can check its working OK for them.
