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Originally posted by SQ228
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I'll be interested to see what registration follows SHH. I wouldn't be surprised if it goes to SHJ.
SWC was omitted most likely to avoid the landing gear flap looking like a gigantic toilet sign. SKO was speculated to be avoiding "Knock Out" references but I also wonder if it could look like "OK" in a mirror in certain instances. There is no attempt, however, to avoid accidental rudeness or embarrassment. Flying around planes with a giant STD or STI is no issue, and there's also one brand new letter combination that was discussed in another thread of making a rather obscene reference in Chinese. Therefore I think the avoidance of certain registrations is based on safety and operational grounds.
SHI could skip for two reasons: Firstly, H, I, O & X are the four letters of the Roman alphabet that are both vertically and horizontally symmetrical, rendering any combination of them prone to be confused when read upside down, which isn't an impossible scenario in aviation. Since X is never used and there have been no registration series based on the other three letters until now, this will be the first test of this theory. Secondly, should planes be having to say a great big hello to everyone on a constant basis?
Just my thoughts for the morning because I'm avoiding things I really should be doing...
SWC was omitted most likely to avoid the landing gear flap looking like a gigantic toilet sign. SKO was speculated to be avoiding "Knock Out" references but I also wonder if it could look like "OK" in a mirror in certain instances. There is no attempt, however, to avoid accidental rudeness or embarrassment. Flying around planes with a giant STD or STI is no issue, and there's also one brand new letter combination that was discussed in another thread of making a rather obscene reference in Chinese. Therefore I think the avoidance of certain registrations is based on safety and operational grounds.
SHI could skip for two reasons: Firstly, H, I, O & X are the four letters of the Roman alphabet that are both vertically and horizontally symmetrical, rendering any combination of them prone to be confused when read upside down, which isn't an impossible scenario in aviation. Since X is never used and there have been no registration series based on the other three letters until now, this will be the first test of this theory. Secondly, should planes be having to say a great big hello to everyone on a constant basis?
Just my thoughts for the morning because I'm avoiding things I really should be doing...
As for having no registration series based on the H, I and O letters, well, actually SQ’s very 1st 2 B747-200’s were registered, quite aptly, 9V-SIA and 9V-SIB, although no other aircraft have used that registration again and it doesn’t appear any other they have continued using the 9V-SIx series...
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