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Since the ICAO identifiers B737, B738, and B739 are already taken, what will the ICAO identifier for the 737 MAX 7, 8, and 9 be? Would it possibly be B73M7 etc?

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  • $\begingroup$ This seems to be entirely speculative. $\endgroup$ – David Richerby Aug 20 '14 at 23:21
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    $\begingroup$ This question appears to be off-topic because it is about speculating on future events, we don't have a crystal ball $\endgroup$ – jwenting Aug 21 '14 at 6:59
  • $\begingroup$ @jwenting Since a designator has already been assigned to the 737 MAX series, there is no speculation at all, just reporting of a fact. No need to close it IMHO. $\endgroup$ – DeltaLima Aug 21 '14 at 16:13
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The new Boeing 737 MAX is based on the Boeing 737 Next Generation family, which it will replace. Also note that 737 MAX is still under development and is scheduled to release in 2017.

Update:

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The first 7 is omitted and the suffix is now an M for Max, e.g. B37M for the Boeing 737 MAX 7.

Wikipedia has complete list of ICAO codes here.


ICAO Aircraft Type Designators: Search for Boeing and you will find 737 MAX in the list.

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  • $\begingroup$ That somewhat surprises me, as I'm sure some 737NG's will be in service for some time after the MAX comes out. Oh well! $\endgroup$ – nathreed Aug 20 '14 at 21:13
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    $\begingroup$ @nathreed they're effectively 738 and 739 aircraft with upgraded interior and engines. For ATC purposes they're no different, so no need to distinguish them. $\endgroup$ – jwenting Aug 21 '14 at 6:43
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Initially they will go with the same designators as the B737NG series. If the performance is very different from the NG, new designators may be chosen. I don't think this will be necessary.


Note that an ICAO aircraft type designator is always 4 characters; B73M7 is too long.

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