Does anyone have one on hand? If so, can you confirm the max altitude?

I don't have the POH with me, but the Flight safety training manual mentions 30000 ft as max for the engines and pressurization system. The early 414 had a 4.2 psi max differential and would give you an 8000 ft cabin at FL200. The later models have a 5.0 pressure differential.

The wording in my 1976 manual is
Max operating altitude limit
- without oxygen equipment : 23,500 ft
- with oxygen equipment : 30,000 ft

The one I have says 23,500 with out O2 and 30,000 with O2.

Just like Doug said.

On the subject of 414's I'm going to start flying one on occasion for a 135. Any tips on the 414?

Mine was a Ram 7 with RSTOL kit. It was a great plane that treated me well. If it wasn't for almost 40 gph and $8/gal avgas in Canada I would still have it.
Feel free to reach out with any specific questions, the usual gotcha's are usually fuel management (up to 6 fuel compartments), setting up the pressurization system (pretty standard) and proper maintainance of the gear system.

I had a tip tank 414 for 10 years, and just because the POH might show a 30k service ceiling, it's a dog above 21-22k. AT FL240 your maxed out. I flew mine in the high teens.

Stay on your toes at max gross and pray both props keep spinning. From what I've seen they are not very forgiving in the event of engine failure. Climbing probably won't be an option unless you are light.

Stay on your toes at max gross and pray both props keep spinning. From what I've seen they are not very forgiving in the event of engine failure. Climbing probably won't be an option unless you are light.

Thanks guys!

This plane only has 161 gallons of fuel. So just mains (tips) and aux tanks. I flew a m35 with mains and aux that returned to the main so that's pretty familiar.

Also this plane has VGs and ram STC allowing 38" vs 36" mp on take off but still only says 310hp. Not sure how that works. I would thing 2 more inches of boost would be worth some hp.

Kinda crazy this big bird only has 50 more hp but 1000lb higher gross weight than my baron. And less useful load by about 100 lbs.

Matt - the 310hp 414 will be somewhat anemic compared to the newer RAMVII powered 414's. Also, from what I understand, it is also the tip tanked 414 which means a shorter wing. I would recommend you take type specific training if you have not done so yet or if you haven't flown one in a while. I would not recommend you jump in to the left seat cold. I will PM you and send you the 414 Simcom training handbook for your reference and could recommend some training resources.

Regards - Alex

That's an odd question....

Please tell me you are not.....