Yeah and I spoke to Ken Blackman on the phone and was perplexed that anyone would not be faced with being forced to re-locate the battery. He said the STC allowed for a ballast in the tail. I told him we were severely limited on payload with our Dallas Metroplex long range tanks. He said he didnt know too many AA-1 drivers with the big motor…[Read more]

You might be right about the CG on the AA-1. After reviewing the CG data on the AA-1, it’s forward limit is about 1″ aft of where it is on the AA-1B for a given weight. This I can understand with the different airfoil, the true laminar airfoil center of lift is further aft. What I don’t understand is they maintained the same AA-1 forward limit…[Read more]

Thanks, you made me look closer at it, I regret spending the money on the STC for the 1560, buyer beware. I did not do my homework. And the STC says “For N5902L only” written on it. So I could really only sell the brackets, not the plates as the plates come with the STC paperwork. It’s a learning experience. Need any brackets? LOL!

Yes, I would talk to David about that. The gear leg brackets are different between the AA-1 and 1A compared to the 1B, and I knew it would require longer bolts to accommodate the plates. That was a question I had a few months ago if I needed the 1B brackets to be able to mount the plates.
I am not sure what made my -1B so special. I also owned…[Read more]

I have in my 1969 AA-1 serial #0202 the sky tec and 60 amp hartzell they help but not much. Getting rid of vacuum lines and pumps almost 11 pounds and from the forward section where you will be heavy. IMHO you will need to relocate the battery unless you want 16 pounds of lead in the tail. Ken did have an STC to relocate the battery. You will…[Read more]

Thanks that is very helpful. You are correct. The STC under conditions and limitations says the compatibility of previously installed equipment….it also says SA2477SW must be accomplished prior to installation of SA4106SW.

So I might have bought something I can’t use. Not sure yet. Fletch Air sent the heavier plates and the STC paperwork, tha…[Read more]

I have the Collier / Fletchair STCs on my AA-1B for both the 0-320 and GW increase. I installed them back in 1984. This gives a GW increase to 1600 on the B for both T/O and landing. Thinking back I thought the GW STC called out that it can only be applied when used along with the Collier Engine STC, calling out that STC #. So the question for…[Read more]

I think it would only be legal with a ferry permit.
I am not familiar with the AA-5 flap system, but it the motor is similar to the AA-1, there is a knob sticking out the back side of the motor that if you can access it you can spin (a whole lot of times) and manually retract the flaps. It might take 5 minutes to do it. Even then with the…[Read more]