Müsait olur olmaz seni arayacağım.

Olur olmaz means as soon as ... happens or the moment ... happens.

It is a fixed Turkish pattern:

• verb-aorist + olmaz

Here:

• olur = it becomes / I become from olmak
• olmaz = literally it does not become

But together, olur olmaz does not mean becomes, does not become in a literal negative sense. As a set expression, it means as soon as it happens.

So:

• Müsait olur olmaz seni arayacağım = As soon as I’m available, I’ll call you

Because Turkish has several different ways to say when or as soon as, and they are not exactly the same.

• müsait olduğumda = when I am available
• müsait olunca = when / once I become available
• müsait olur olmaz = as soon as I become available

So olur olmaz gives a stronger sense of immediately after. It emphasizes that the second action will happen right away.

Compare:

• Müsait olunca seni arayacağım = I’ll call you when I’m available
• Müsait olur olmaz seni arayacağım = I’ll call you as soon as I’m available

In Turkish, many adjectives combine with olmak to mean to become / to be in a state.

• müsait = available, free
• müsait olmak = to be / become available

In English, we often just say I’m available, using to be. In Turkish, olmak is commonly used in these kinds of expressions.

Other similar examples:

• hazır olmak = to be ready
• mümkün olmak = to be possible
• iyi olmak = to be well / get better

So müsait olur olmaz is literally something like the moment I become available.

Because Turkish usually drops subject pronouns when the verb already shows who the subject is.

• arayacağım = I will call
• The ending -acağım / -eceğim already tells you the subject is I

So ben is unnecessary unless you want emphasis or contrast.

Compare:

• Seni arayacağım = I’ll call you
• Ben seni arayacağım = I will call you

The second one sounds more emphatic.

Seni means you as the direct object of the verb.

Breakdown:

• sen = you
• seni = you, as the thing/person receiving the action

The verb aramak means to call / look for, and when it takes a specific direct object, Turkish uses the accusative ending.

So:

• seni arayacağım = I will call you

Compare:

• Birini arıyorum = I’m calling someone / looking for someone
• Seni arıyorum = I’m calling you

Yes. Aramak can mean both:

• to call someone on the phone
• to look for / search for

The meaning depends on context.

Examples:

• Seni arayacağım = I’ll call you
• Anahtarlarımı arıyorum = I’m looking for my keys

In your sentence, because of the context, it clearly means call.

Arayacağım comes from aramak and means I will call.

A simplified breakdown is:

• ara- = call
• -yacak / -yecek = future tense marker
• -ım / -im = first person singular, I

Because of sound changes and vowel harmony, this becomes:

• ara + yacak + ım
• arayacağım

So the full meaning is:

• arayacağım = I will call

The y is a buffer consonant.

In Turkish, when two vowels would come together awkwardly, a linking consonant often appears. One common linker is y.

Here:

• stem: ara-
• future suffix begins with a vowel-like connection in practice
• so Turkish uses y: ara + yacak

That gives:

• arayacak
• arayacağım = I will call

This kind of linking happens in many words in Turkish.

Both are natural, but they are slightly different in feeling.

• Müsait olunca seni arayacağım = I’ll call you when I’m available
• Müsait olur olmaz seni arayacağım = I’ll call you as soon as I’m available

The second one sounds more immediate and more definite about calling right away.

So if you want to stress immediately, olur olmaz is the better choice.

The sentence is:

• Müsait olur olmaz = as soon as I’m available
• seni = you
• arayacağım = I will call

A very common Turkish word order is:

• time or condition first
• object next
• verb last

So this sentence is very natural.

You could move things around for emphasis, but the standard order is:

• Müsait olur olmaz seni arayacağım

Since Turkish is flexible, speakers may shift parts for focus, but the verb often stays at the end.

Yes. This pattern is productive and can be used with many verbs to mean as soon as.

Examples:

• Eve varır varmaz beni ara.
  Call me as soon as you arrive home.

• Onu görür görmez tanıdım.
  I recognized him as soon as I saw him.

• Gelir gelmez başladı.
  He started as soon as he arrived.

So müsait olur olmaz follows the same pattern.

Yes, and this can be confusing.

As a set phrase after a verb, verb + olur olmaz means as soon as:

• gelir gelmez
• görür görmez
• olur olmaz

But olur olmaz can also appear in a completely different expression meaning something like random, improper, or for no good reason, depending on context:

• olur olmaz şeyler söylemek = to say inappropriate / random things

So in your sentence, you should understand it as the as soon as pattern, not that other meaning.

Yes, absolutely.

Natural English translations include:

• As soon as I’m available, I’ll call you
• As soon as I’m free, I’ll call you
• The moment I’m free, I’ll call you

They all match the Turkish well. The exact English wording depends on context and tone.