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Aviation Education #4 Mystery Cache

Hidden : 10/25/2010
Difficulty:
2.5 out of 5
Terrain:
1.5 out of 5

Size: Size:   micro (micro)

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Geocache Description:


After creating the evil SLI 137/2.41 cache, I thought I'd lighten up a bit on the difficulty with an educational series.

Cache is not at posted coordinates, as usual.

I don't want to get a speeding ticket, so what is the max. speed for these?:
Holding at 4,000 ft.: a=xxx-196
Holding at 12,000 ft.: b=xxx/115
Holding at 25,000 ft.: c=(xxx-5)/130
In Class D: d=xxx-198
Below 10,000 MSL: e=(xxx-10)/60

The cache is at N33 4a.bc3 W118 02.de3

You can check your answers for this puzzle on Geochecker.com


Congrats to mmarmont for the FTF!

Additional Hints (Decrypt)

[cache:] Hfr lbhe guvaxvat PNC.

Decryption Key

A|B|C|D|E|F|G|H|I|J|K|L|M
-------------------------
N|O|P|Q|R|S|T|U|V|W|X|Y|Z

(letter above equals below, and vice versa)