14. Alfa, Bravo, Charlie

Star-Spangled Stories. Article 14.

Alfa, Bravo, Charlie

Why does every letter have its own "radio" name?

The spelling alphabet was not created as a school game. It is a carefully designed tool for situations where a single misheard letter can cause a serious mistake.

B and P sound alike on the radio

Imagine a pilot reporting an important code over the radio. The connection crackles, the cockpit is noisy and the people on each side may have different mother tongues. The bare names of the letters B, D, P, T or V are easy to confuse. Bravo, Delta, Papa, Tango or Victor, on the other hand, sound very different.

That is exactly why the spelling alphabet was created. It is not a phonetic alphabet in the IPA sense, which writes sounds with symbols. It is a set of agreed code words, each of which clearly stands for a single letter.

From Amsterdam to Able Baker

Agreed spelling alphabets were used long before today's version. In 1927 an internationally recognized radiotelegraph system was created with words like Amsterdam, Baltimore and Canada. In the Second World War, the military system Able, Baker, Charlie, Dog was common among the English-speaking Allies.

But even that was not ideal for international civil aviation. Words that an American could recognize easily were not necessarily heard as reliably by speakers of other languages. Particular sounds had to be tested, not just nice words chosen.

An alphabet tested in dozens of countries

In the 1950s, the International Civil Aviation Organization (ICAO) compared different sets and tested how understandable they were in difficult conditions. According to ICAO's historical overview, speakers from 31 countries took part in the tests. The final version came into force for civil aviation on 1 March 1956, and NATO adopted it as well.

The criterion was not just that a word started with the right letter. What mattered was that people with different mother tongues could pronounce it, recognize it and easily tell it apart from the other code words, even on a noisy line.

Why Alfa and not Alpha? And why Juliett?

The official spelling Alfa is not an ordinary English mistake. Writing it with f makes pronunciation easier for people who may not know the English or Greek convention ph = /f/. And Juliett has two t's so that, for example, French speakers do not treat the final t as silent.

This may be the nicest paradox of the whole alphabet: the words look a little different from what a native speaker of English expects precisely because the system was designed for the whole world. Clever standardization sometimes requires giving up the usual spelling.

How numbers are pronounced

In international aviation radio, some numbers also have a special form. For greater clarity, tree is used for three, fife for five and niner for nine. This is not a rule for all ordinary phone calls, and it is not new English grammar.

In practice, the speed, the order of information and the repetition of important details can also be standardized. Real communication success does not lie only in the right code, but also in confirming that the other side has understood.

An alphabet that is useful outside airports too

Today the code words are used by soldiers, pilots, sailors, call-centre workers and people dictating a complicated address over the phone. Some countries have their own national spelling systems as well, but the international Alfa–Zulu set is very widespread.

Next time you spell an English surname, you can use Bravo instead of an uncertain "B as in...". And when someone says Whiskey Tango Foxtrot, it is not just three random words, but an exact sequence of letters, W-T-F — often used as a humorous allusion, too.