In IFR operations, what is the standard lost communications AVEF procedure for route and altitude?

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Multiple Choice

In IFR operations, what is the standard lost communications AVEF procedure for route and altitude?

When you lose communications in IFR, you follow a defined priority for both route and altitude to stay safe and aligned with ATC’s expectations. For the route, you stick with the sequence Assigned, Vectored, Expected, Filed. Start with the route ATC has assigned to you. If you were being vectored and the comms fail, continue on that vector until you can proceed via the route you were expected to fly, then use the filed route if there’s no further instruction. This keeps you in the path ATC anticipated and avoids drifting off course. For altitude, you fly the highest of these values: the last assigned altitude, the minimum IFR altitude along the route (MEA), or the altitude ATC has advised you to expect. Taking the highest value ensures you maintain obstacle clearance and stay within the altitude ATC planned for your route, even without a radio contact. So the best approach matches the described order for route and the rule to climb to the highest of last assigned, MEA, or expected altitude. The other options deviate from this established sequence or omit the “expected” element, which could lead you off the path ATC intended or below safe altitude.

When you lose communications in IFR, you follow a defined priority for both route and altitude to stay safe and aligned with ATC’s expectations. For the route, you stick with the sequence Assigned, Vectored, Expected, Filed. Start with the route ATC has assigned to you. If you were being vectored and the comms fail, continue on that vector until you can proceed via the route you were expected to fly, then use the filed route if there’s no further instruction. This keeps you in the path ATC anticipated and avoids drifting off course.

For altitude, you fly the highest of these values: the last assigned altitude, the minimum IFR altitude along the route (MEA), or the altitude ATC has advised you to expect. Taking the highest value ensures you maintain obstacle clearance and stay within the altitude ATC planned for your route, even without a radio contact.

So the best approach matches the described order for route and the rule to climb to the highest of last assigned, MEA, or expected altitude. The other options deviate from this established sequence or omit the “expected” element, which could lead you off the path ATC intended or below safe altitude.

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