VTCIE
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'Triple' ICAO codes (of the form ABBB)

Sat Dec 01, 2018 2:01 pm

I do not suppose this has ever been noticed or discussed anywhere before. There are a great many ICAO codes in Eurasia, and particularly in Russia and China, where the last three letters are the same. Some other such airports are scattered around the world. Here goes (what I know), in alphabetical order:

  • DBBB: Cotonou, Benin
  • DXXX: Lomé, Togo
  • HSSS: Khartoum, Sudan
  • NVVV: Port-Vila, Vanuatu
  • NWWW: Nouméa, New Caledonia
  • OIII: Tehran (Mehrabad), Iran
  • TFFF: Fort-de-France, Guadeloupe
  • UAAA: Almaty, Kazakhstan
  • UBBB: Baku, Azerbaijan
  • UEEE: Yakutsk, Russia
  • UHHH: Khabarovsk, Russia
  • UIII: Irkutsk, Russia
  • UKKK: Kiev (Zhuliany), Ukraine
  • UOOO: Norilsk, Russia
  • URRR: Rostov-on-Don, Russia (CLOSED and replaced by URRP)
  • USSS: Ekaterinburg, Russia
  • UTTT: Tashkent, Uzbekistan
  • UWWW: Samara, Russia
  • VCCC: Ratmalana, Sri Lanka
  • VHHH: Hong Kong, China (SAR)
  • VYYY: Yangon, Myanmar
  • WAAA: Makassar, Indonesia
  • WIII: Jakarta (Soekarno-Hatta), Indonesia
  • WSSS: Singapore, Singapore
  • ZGGG: Guangzhou, China
  • ZHHH: Wuhan, China
  • ZLLL: Lanzhou, China
  • ZPPP: Kunming, China
  • ZSSS: Shanghai (Hongqiao), China
  • ZUUU: Chengdu, China
  • ZWWW: Ürümqi, China

Special mention to CYYY (Mont-Joli, Canada) and, the king of them all, MMMM (Morelia, Mexico).

A few codes miss by a hair's breadth: for instance GMMN (I have never been able to understand where the 'N' in its IATA code comes from. This is of special importance as this country's flag carrier is joining Oneworld). Furthermore, when Hong Kong is VHHH, Macau could just as well have been VMMM. Why VMMC?

All in all, a very intriguing list. Thoughts?
5H-TCG
 
ELBOB
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Re: 'Triple' ICAO codes (of the form ABBB)

Sat Dec 01, 2018 3:06 pm

VTCIE wrote:
Furthermore, when Hong Kong is VHHH, Macau could just as well have been VMMM. Why VMMC?

All in all, a very intriguing list. Thoughts?


Nice list! I'm surprised that pattern is so common given how awkward they'd be over the radio; it's easier to catch a series of differing phonetic letters instead of trying to count three WHISKY in a row.

I always remembered VHHH as Hong Kong Harbour but I doubt that had any official basis.
 
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PatrickZ80
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Re: 'Triple' ICAO codes (of the form ABBB)

Sat Dec 01, 2018 3:45 pm

While all major airports in Germany start with EDD, there isn't an EDDD airport. They could have used it for Dusseldorf, but that became EDDL. Dresden became EDDC.

By the way I found another one: LDDD Zagreb, Croatia.
 
VTCIE
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Re: 'Triple' ICAO codes (of the form ABBB)

Sat Dec 01, 2018 4:21 pm

PatrickZ80 wrote:
While all major airports in Germany start with EDD, there isn't an EDDD airport. They could have used it for Dusseldorf, but that became EDDL. Dresden became EDDC.

Some other countries also follow this system of fixing the middle two letters, like neighbouring Austria, which has LOW*, and Malaysia, which has WMK* (Peninsular), WBK* (Sabah) and WBG* (Sarawak). The big exception is WMSA (Subang Airport).

PatrickZ80 wrote:
By the way I found another one: LDDD Zagreb, Croatia.

That's LDZA. LDDD is apparently the AFTN airport code. Any idea what AFTN is?

Fact: Denpasar had WRRR in the past, but it's WADD now. viewtopic.php?t=768991#p11096883

N.B. Rephrasing my question more clearly: where does the N in CMN (ICAO code: GMMN) come from? This is a simple explanation of my cryptic question in the first post. (It is certain that Royal Air Maroc is joining Oneworld, and announcing it on Wednesday.)
5H-TCG
 
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vatveng
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Re: 'Triple' ICAO codes (of the form ABBB)

Tue Dec 04, 2018 1:26 am

East Texas Regional Airport (Longview, TX), gets its code from the fact that it's in Gregg County: KGGG. Served by AA. That's the only "triple code" assigned to a US airport with commercial service, although there are a couple of GA and military airfields that have triples.
 
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RyanairGuru
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Re: 'Triple' ICAO codes (of the form ABBB)

Tue Dec 04, 2018 8:10 am

Not related to the OP's question, but I've always liked YSSY for Sydney.
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mcgreg
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Re: 'Triple' ICAO codes (of the form ABBB)

Tue Dec 04, 2018 8:48 am

Interesting list and codes. Keep the list going.
 
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SRQKEF
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Re: 'Triple' ICAO codes (of the form ABBB)

Tue Dec 04, 2018 12:35 pm

There are also some airport codes that start with the same three letters, such as Mexico City (MMMX) .
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Eindhoven
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Re: 'Triple' ICAO codes (of the form ABBB)

Tue Dec 04, 2018 6:54 pm

And there are repeating codes where the first two are the same as the last two, such as EHEH for EIN.
 
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BWIAirport
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Re: 'Triple' ICAO codes (of the form ABBB)

Wed Dec 05, 2018 2:31 am

Not entirely related but the ICAO code for Key West begins to spell 'Key West': KEYW
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T18
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Re: 'Triple' ICAO codes (of the form ABBB)

Thu Dec 06, 2018 2:17 am

BWIAirport wrote:
Not entirely related but the ICAO code for Key West begins to spell 'Key West': KEYW

That's one of the best, one of the worst has to be Rapid City (KRAP).
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Coal
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Re: 'Triple' ICAO codes (of the form ABBB)

Sat Dec 08, 2018 10:05 am

While Changi uses WSSS, Seletar Airport (which was meant to start ops in early Dec but hasn't done so due to Malaysian belligerence), is WSSL. Paya Lebar Air Base, which is usually used by VVIPs (e.g. heads of state), is a military base, and has had some very rare SQ diversions, is WSAP.
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Gemuser
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Re: 'Triple' ICAO codes (of the form ABBB)

Sun Dec 09, 2018 3:20 am

OP: "Furthermore, when Hong Kong is VHHH, Macau could just as well have been VMMM. Why VMMC?"
It COULD be because Macau airport opened only in 1995 where as HKG [Kai Tak] opened 1925 ie pre ICAO

VTCIE Reply 4: "That's LDZA. LDDD is apparently the AFTN airport code. Any idea what AFTN is?"
AFTN: Aeronautical Fixed Telecommunications Network. See: https://en.wikipedia.org/wiki/Aeronauti ... on_Network, Was originally a telex service linking airlines, airports, regulators & service companies, now an IT network of various forms. Owned by aviation companies [mainly airlines] and run via SITA. See: https://www.sita.aero/about-us

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GalaxyFlyer
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Re: 'Triple' ICAO codes (of the form ABBB)

Sun Dec 09, 2018 3:45 am

PatrickZ80 wrote:
While all major airports in Germany start with EDD, there isn't an EDDD airport. They could have used it for Dusseldorf, but that became EDDL. Dresden became EDDC.

By the way I found another one: LDDD Zagreb, Croatia.


What about those ICAO LOCIDs I have in my logbook, ETAR, ETAF, ETMN, ETNN and ETAD, all in Germany.

GF
 
PSAatSAN4Ever
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Re: 'Triple' ICAO codes (of the form ABBB)

Tue Dec 11, 2018 12:00 am

http://gc.kls2.com/airport/MLM

Four of a kind, ladies and gentlemen, read 'em and weep.

Any other quadruples out there?
 
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PatrickZ80
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Re: 'Triple' ICAO codes (of the form ABBB)

Tue Dec 11, 2018 9:26 pm

GalaxyFlyer wrote:
What about those ICAO LOCIDs I have in my logbook, ETAR, ETAF, ETMN, ETNN and ETAD, all in Germany.

GF


Looks like they're all military. In Germany civilian airports start with ED and military airports with ET.

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