A couple questions:

50pts - Search for airports within a user-specified distance of a single zipcode.

1. Just to get things clarified, the user should be able to input a zip code and get a list of nearby airports?

50pts - Specify a city name and display all zipcodes within the specified city.

2. The user should be able to enter a city name and get a list of zip codes?

3. Can the webapp can be as simple as two forms asking for those inputs and displaying the results below?