MOSAIC Rule Today?

Baked Potato

Baked Potato

Pattern Altitude
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Baked Potato
According to AVWeb, FAA is supposed to announce the final MOSAIC rules today!!!

I thought this day would never come. To celebrate, I've inserted an image of me flying a Cherokee as PIC. If you look closely you can see that I don't have a medical certificate on my person.

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That would be great. Im curious about the stall speed limitation and which planes are included because of it.

Overall it will be a very significant change.
 
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Yeah, hopefully it doesn't disqualify all PA-28s because the stall speed is 1kt over.
 
AV8R_87 said:
Yeah, hopefully it doesn't disqualify all PA-28s because the stall speed is 1kt over.
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They said they expect it to be set at 58kts, though we'll find out shortly. Checklist on my school's 180 states 54kts.
 
Baked Potato said:
According to AVWeb, FAA is supposed to announce the final MOSAIC rules today!!!

I thought this day would never come. To celebrate, I've inserted an image of me flying a Cherokee as PIC. If you look closely you can see that I don't have a medical certificate on my person.

View attachment 143106
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Are you tubers* even required to have pilot certificates?

*See what I did there. :biggrin:
 
Apparently it's the secretary of transportation who might make the announcement starting at 1230EST. Curious if EAA or someone will livestream it and if there is a link...

(edit: 1230EST)
 
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Naturally my plane has a published clean stall speed of 59 kts.
 
Baked Potato said:
They said they expect it to be set at 58kts, though we'll find out shortly. Checklist on my school's 180 states 54kts.
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Remember, it's not just a 58-knot stall speed, it's a 58-knot CLEAN stall.

Last fall, EAA asked me to estimate how much of the fleet will qualify under the new rules. I downloaded a crap ton of POHs and determined about 70% of the single-engine GA fleet would qualify. Wrote an article for them in anticipation, it should answer most questions.

I'm currently away from home (our old house goes on sale today) but when I get aback I'll access my spreadsheet and post a summary.

Ron Wanttaja
 
wanttaja said:
Remember, it's not just a 58-knot stall speed, it's a 58-knot CLEAN stall.

Last fall, EAA asked me to estimate how much of the fleet will qualify under the new rules. I downloaded a crap ton of POHs and determined about 70% of the single-engine GA fleet would qualify. Wrote an article for them in anticipation, it should answer most questions.

I'm currently away from home (our old house goes on sale today) but when I get aback I'll access my spreadsheet and post a summary.

Ron Wanttaja
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That would be awesome.
BTW, the checklist for the 180 (knowing full well this isn't the PoH) states 54kts for VS1. VS0 is 49.
 
wanttaja said:
Last fall, EAA asked me to estimate how much of the fleet will qualify under the new rules. I downloaded a crap ton of POHs and determined about 70% of the single-engine GA fleet would qualify. Wrote an article for them in anticipation, it should answer most questions.
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I assume this was done and it was 70% with the then proposed 54 knot clean stall limit? I'd be curious on your updated analysis if it ends up being 58 or whatever they approve.
 
Just wondering . . ..

Do STCs for VGs include any documentation of lowered Vs and if so would that affect the POH Vs (since it would be a supplement)?
 
pilotmichael said:
Apparently it's the secretary of transportation who might make the announcement starting at 1230CST. Curious if EAA or someone will livestream it and if there is a link...

(edit: 1230CST)
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Answering my own question: Avweb has an "Oshkosh Live" stream on their website. Maybe they'll carry it: https://avweb.com/
 
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pilotmichael said:
I assume this was done and it was 70% with the then proposed 54 knot clean stall limit? I'd be curious on your updated analysis if it ends up being 58 or whatever they approve.
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No, the assumption last fall would be that the limit would be raised to 58 knots.

Being an engineer, I built a spreadsheet with the stall limit as a variable. Plotted the number of qualifying aircraft vs. stall speed. Definite flattening at 58-60 knot stall.

Another factor to keep in mind is the limitation to four seats or less. Don't know if the FAA kept that or not, but it bit a number of aircraft certified with an optional fifth (child's) seat. IIRC, it took the Cessna 190 and 195 out of the category, along with others.

Ron Wanttaja
 
The owner's manual for my Musketeer states two clean stall speeds. With power on, clean stall is 56 knots, and with power off, clean stall is 63 knots. If they keep VS1 at 54, I'm screwed either way, but if they bump it to 58 I think the mouse might qualify.
 
In my area it would certainly open up a lot more options for flight training as there's hardly any LSAs available. My main concern is whether insurance companies will allow flight schools to rent out their 172s to people without medical certificates.
 
CaptainXap said:
In my area it would certainly open up a lot more options for flight training as there's hardly any LSAs available. My main concern is whether insurance companies will allow flight schools to rent out their 172s to people without medical certificates.
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I was able to easily get insured for an LSA that my school has. Not sure if it would be any different for a 172 or Cherokee.
 
MauleSkinner said:
Most of these STCs that I’ve seen don’t publish a lower stall speed.
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Even my 182 with the canard does not have a published speed that came with the STC. In real life Vs1 is 40 and Vso at flaps 20 is 35. I gotta check my POH for what was published (1976 182P).

I know how that sounds - “how can you not know the stall speed from the POH”? Because it’s not the stall speed anymore.
 
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