It is a bit noisy, but a 24x36 print will most likely be viewed from 3' or greater, so you would not notice the noise. However, I downloaded the original and applied some moderate noise reduction and thought it took very well, without any degradation in sharpness. So I'd recommend a little noise reduction before printing.
At 24x36 you will get 130ppi. That's a bit low, but acceptable at the +3 foot viewing distance. Given the quality of the image I would recommend printing at that ppi instead of trying to uprez. Uprezing will amplify the noise and softness that is already there.
If you are going to invest in such a prominent print, I'd recommend a few tweaks first.
1. Try to knock down the burned out highlights in the window behind the cockpit and the floor under the plane. Try a Levels adjustment, and simply slide the white "output level" slider (not the histogram sliders) to the left. Add a black mask and then roughly paint in the adjustment with soft brush.
2. Clone out the bright sections on the top left (above and below the catwalks). I grabbed a section of the gray squares from the right of the plane and transformed, patched, and masked them in the one section behind the man on the catwalk. Looked good. Just cloning the other small section from the dark area above it is OK.
3. Clone out the spotlights on the middle catwalk.
4. Increase the overall contrast. You already have clipped blacks in the catwalks and engine cowling, but that's OK. But a little more darkening of the background and a litte brightening of the golden "V" on the plane nose makes the image more dramatic.
5. If you are really ambitious, you might try to clone out the windows behind the cockpit instead of using Levels to darken them. That big white area in the middle of the image is a major distraction. Cloning would be difficult and time consuming, trying to borrow from the roof section above the windows, but might be worth it.