There are some secret areas on widebody aircraft, where the pilots and cabin crew go to rest during long flights. Passengers can't access them under any circumstance and they're well hidden from view.
원문출처 : https://www.cnn.com/travel/article/airplane-crew-sleeping-quarters-cmd/index.html
원문출처 : https://www.cnn.com/travel/article/airplane-crew-sleeping-quarters-cmd/index.html