YOU SAID:

As the plane was taking off, i ate a pack of chips

INTO JAPANESE

飛行機が離陸していたので、私はチップのパックを食べました

BACK INTO ENGLISH

I ate a pack of chips as the plane was taking off

INTO JAPANESE

飛行機が離陸するとき、私はチップのパックを食べました

BACK INTO ENGLISH

I ate a pack of chips when the plane took off

INTO JAPANESE

飛行機が離陸したとき、私はチップのパックを食べました

BACK INTO ENGLISH

I ate a pack of chips when the plane took off