Final answer:
To form a sentence in the preterite tense, conjugate the verb despegar according to the subject el avión. The conjugation for the subject el avión is despegó.
Step-by-step explanation:
In order to form a sentence in the preterite tense, we need to conjugate the verb despegar according to the subject el avión. In the preterite tense, the conjugation for the subject el avión is despegó.
Learn more about Conjugation in the preterite tense