Когда самолёт остановился, трап ещё не подали, и люди немного устали ждать.

Остановился is perfective past. It presents the plane’s stopping as one completed event: the plane came to a stop, and then the next situation follows.

If you used останавливался instead, that would be imperfective, which would suggest:

• a repeated action,
• an ongoing process,
• or background description rather than a finished moment.

In this sentence, the stopping is a clear time boundary, so Когда самолёт остановился... is the natural choice.

The verb here is остановиться, not остановить.

• остановить = to stop something
• остановиться = to stop / come to a stop

So самолёт остановился means the plane stopped or came to a stop.

The -ся form is the normal intransitive verb here. It does not mean a literal reflexive action like the plane stopped itself in any strong English sense; it is just how Russian forms this verb.

This is a very common Russian pattern: 3rd person plural with no stated subject to mean people / staff / they in a vague, unspecified way.

So трап ещё не подали literally looks like they still hadn’t brought the stairs yet, but in natural English we often translate it more impersonally:

• the stairs hadn’t been brought yet
• the stairway wasn’t there yet

Russian often prefers this active-looking construction where English might prefer a passive.

Because Russian very often sounds more natural with an indefinite-personal sentence than with a formal passive.

Compare:

• трап ещё не подали = natural, everyday
• трап ещё не был подан = grammatical, but more formal/bookish

So the sentence uses the version a native speaker would very naturally say in normal narration.

Ещё не means not yet.

So:

• не подали = didn’t bring / hadn’t brought
• ещё не подали = hadn’t brought yet

The word ещё shows that the action was expected, but by that moment it still had not happened.

That fits the situation well: the plane had stopped, but the stairs were still not there.

Трап is in the accusative singular, because it is the direct object of подали.

But for many masculine inanimate nouns, the accusative singular has the same form as the nominative singular.

So:

• nominative: трап
• accusative: трап

That is why there is no visible ending change.

After устать, Russian can use an infinitive to say that someone got tired from doing something or grew tired of doing something.

So:

• устали ждать = got tired of waiting / became tired waiting

This is a very common pattern:

• устал объяснять = got tired of explaining
• устали спорить = got tired of arguing
• устала читать = got tired of reading

So ждать stays in the infinitive because it names the activity that caused the tiredness.

It can suggest both, but here it most naturally means they became somewhat tired/impatient from waiting.

So it is not necessarily strong physical exhaustion. It often has the sense:

• the waiting went on long enough
• people started feeling weary, fed up, or impatient

That is why a natural English rendering is often the people were getting a little tired of waiting.

Немного means a little, somewhat, or slightly.

In this sentence it softens the statement:

• люди устали ждать = the people got tired of waiting
• люди немного устали ждать = the people got a little tired of waiting

So the sentence does not sound dramatic. It suggests mild fatigue or mild impatience rather than a serious complaint.

There are two commas for two different reasons.

1. Когда самолёт остановился, ...

   • The first comma separates the subordinate clause introduced by когда from the main part of the sentence.

2. ..., трап ещё не подали, и люди немного устали ждать

   • The second comma comes before и because it joins two clauses:
     • трап ещё не подали
     • люди немного устали ждать

Each of those has its own predicate, so they are treated as separate clauses.

Yes. Russian word order is flexible, but different orders change the emphasis.

The given version is natural:

• Когда самолёт остановился, трап ещё не подали, и люди немного устали ждать.

It puts трап early, which helps focus on the key missing thing after the plane stopped.

You could also hear:

• Когда самолёт остановился, ещё не подали трап...

That is also possible, but the emphasis shifts slightly. The original version sounds smooth and natural in narrative Russian.