The flight check is rather more than just flying the LOC/DME approach.
They also make multiple cross-cuts through it, too,
checking off-axis performance. But it's no big deal.

You're right about the lead time for scheduling the flight, of course.
---JRC---

"James M. Knox" wrote in message =
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Well, the flight check only takes about an hour or less. Essentially =
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just fly the approach like anyone would, and log the results. They =
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usually fly it more than once, however, to check the limits.
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The problem is that the FAA only has a couple of planes to do this for =
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entire USA. Normally this is enough - they sort of wander across the=20
country and all of the approaches get rechecked every few years. The=20
problem in your case is that you don't want to wait for years. {:(
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