Por que o avião não pode taxiar para trás? [duplicado]

Esta é uma notícia de Notícias locais da Indonésia

Estas são as traduções do google translate.

Tambolaka - Garuda Indonesia plane seems broken and pushed by people. This is a complete explanation from Garuda Indonesia.

The incident was crowded on social media and commented on by various netizens. Considering this, Senior Manager of Public Relations of Garuda Indonesia Ikhsan Rosan raised his voice and explained it.

"It just happened today, it's at Tambolaka Airport (Southwest Sumba, East Nusa Tenggara-red)," he told detikTravel, Friday (8/2/2018).

Ikhsan Rosan asserted, the CRJ type aircraft is not broken. Instead, the plane was a little too far as it landed and passed through the apron, the aircraft parking lot.

"The plane should be landing go straight to the left to the apron." Well, he passed a little, "he added.

Then why should be pushed by people?

"Because there's no pushback car, that's what drives the plane, so it seems that it is driven by technicians and airport officers," Ikhsan Rosan replied.

Ikhsan Rosan confirmed, Garuda aircraft flight is fine. Everything is running smoothly

A minha pergunta é: é verdade que o avião não pode taxiar para trás, por isso, se ele passa é avental, as pessoas ou um carro de empurrar de volta deve empurrar o avião de volta? Por que o fabricante do avião não dá a capacidade de o avião se mover para trás?