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Brainteasers Interactive Quiz #1:
Approach Plate Interpreation

Match wits with IFR magazine editor Paul Bertorelli as he puts your approach plate reading skills to the test. Paul is infamous for his tough and tricky questions, some of which just don't have pat answers. Not for the faint of heart. This month's challenge: the ILS 15R at Baltimore-Washington International.

by Paul Bertorelli

View Plate The questions is this Brainteaser quiz are based on the ILS 15R approach plate for Baltimore-Washington International Airport, Maryland (BWI). To follow along, you may wish to locate either the NOS or Jeppesen version of the plate.

If you don't have that plate handy, you can click on the miniature approach plate to view a full-size graphic image of the NOS plate (38K). You'll probably find it handy to print out a hardcopy of the plate for reference while you take the quiz.

Baltimore used to be the butt of many a joke but it's one of the nicest cities in the east. In fact, before the state got all wrapped up in international marketing, the airport used to be called Friendship. Where else can you kick back with a bushel of steamed crabs and a couple of cold ones and watch the sailboats look for wind on the bay?

You gotta get there first, though. We usually fly into Martin State, but like Mt. Everest, BWI is there. Here are a few questions on the BWI ILS 15R.

Answer the questions as best you can, then click on the "score" button to see your score and read the explanations. If you don't like your score the first time around, you can change some of your answers and resubmit. To get the most out of this quiz, we suggest you keep trying until you get a perfect score.


1. Evidently, the TERPs and ATC guys thought you might have to fly this baby non-radar, so they included how many transitions?
a. One
b. Two
c. Three
d. Five
2. What are the straight-in minimums with glideslope inop?
a. 340 feet/1/2 mile
b. 200 feet/1/2 mile
c. 640 feet/1 mile
d. None of the above
3. Why is radar required for the approach?
a. Because ATC wants it that way.
b. To identify the stepdowns at BMORE and TRUTH.
c. It's required for the simultaneous operations which may be conducted on 15L.
4. Could you complete the approach on your own without DME?
a. Sure, no problem.
b. Umm...I could see one little problem.
c. No way, you either need the DME or radar to complete the approach.
5. Assume you're inbound on the ILS, just inside the 12.5 mile radar fix on the localizer. Upon crossing TRUTH on the glideslope, what is your altitude above the airport? (Trick question, so watch it.)
a. 1444 MSL
b. 1304 AGL
c. 1298 AGL
d. 1304 MSL
e. Can't tell from information presented.
6. Special Bonus Question: The identifier on the ILS 15R localizer is I-FND. Where did that come from?
a. How should I know?
b. Random chance.
c. Recent history.