Vertical speed beyond limit (?)

[BK 1]

Final Approach Last 500ft

Not Stable: ☛ Vertical Speed beyond Limit:  -339.01 fpm ( Limit: -400 fpm)   This is what I get. However, -339 fpm is smaller then -400fpm, then how come the conclusion is "not stable"?   Thank you

[marcom 139]

4 hours ago, BK said:

Final Approach Last 500ft

Not Stable: ☛ Vertical Speed beyond Limit:  -339.01 fpm ( Limit: -400 fpm)   This is what I get. However, -339 fpm is smaller then -400fpm, then how come the conclusion is "not stable"?   Thank you

Please send me your lastapproach file.

[BK 1]

On 5/24/2021 at 12:05 AM, marcom said:

Please send me your lastapproach file.

Hi.

Sent via email.

[C2615 319]

There is a  window for stable, -400 to -1100 or so, if you wave up and down for the glide path, it's also not stable.

If you fly something slow that require less than -400 vs, you can change the settings in the options.

[marcom 139]

7 hours ago, C2615 said:

There is a  window for stable, -400 to -1100 or so, if you wave up and down for the glide path, it's also not stable.

If you fly something slow that require less than -400 vs, you can change the settings in the options.

Exactly.

As I had replied to Benny, he had a deviation "towards shallow-ness" of his approach, where he pitched up and the descent rate became too shallow (said ~350 fpm). These ballooning effects can quickly lead to unstable approaches (glidepath deviations) but in this case, he quickly reacted and no other deviations were detected.

As such, I would say albeit an increased risk but it still resulted in a safe approach and landing - so good recovery / piloting! 🙂

[BK 1]

On 5/24/2021 at 12:05 AM, marcom said:

Please send me your lastapproach file.

Hi.

Thank you for the info. We are learning...And this tool helps a lot.

[SoonerST 0]

Doesn't look like anyone has been on this thread in years, but I'm new to Flight Monitor (I think it is great BTW).  My problem is that I think the Vertical Speed Limit gets measured all the way to touchdown and triggers a penalty if you get higher than -100fpm just prior to landing?  The graph shows I was higher than -400fpm the entire approach, until just before touchdown and then assigns a penalty for being -382fpm (so I guess I as at -18fpm during roundout and flare)?  This is in a C172 (like I said, I'm a beginner) - not sure if the settings are right for this light A/C or if I'm just not understanding something.  I've been struggling with this penalty for a while, so FWIW, the above experience was on an ILS landing in APR mode.  I didn't even go AP off until after crossing the threshold.  Any idea what I might not be understanding?

 

[marcom 139]

On 2/3/2024 at 2:03 AM, SoonerST said:

Doesn't look like anyone has been on this thread in years, but I'm new to Flight Monitor (I think it is great BTW).  My problem is that I think the Vertical Speed Limit gets measured all the way to touchdown and triggers a penalty if you get higher than -100fpm just prior to landing?  The graph shows I was higher than -400fpm the entire approach, until just before touchdown and then assigns a penalty for being -382fpm (so I guess I as at -18fpm during roundout and flare)?  This is in a C172 (like I said, I'm a beginner) - not sure if the settings are right for this light A/C or if I'm just not understanding something.  I've been struggling with this penalty for a while, so FWIW, the above experience was on an ILS landing in APR mode.  I didn't even go AP off until after crossing the threshold.  Any idea what I might not be understanding?

 

Hi,

aviaFlightMonitor is parameterized and optimized for transport category aicraft. Flying smaller GA type aircraft will of course yield in "penalties" since you fly a completely different profile.

If you want to use aviaFlightMonitor for smaller aircraft, you do in fact have the option to set different limits through the settings dialog.

Regards

Mark