I kind of agree with Ghana here. Gotta maintain your planes. It's sad that a foreign country has to be the one making Delta do routine pmc.
Source: that URL, with an old free membership.
Here's a news article from Ghana regarding the whole thing, including photos of the official letter to Delta from their aviation authority, etc:
https://www.ghanaweb.com/GhanaHomePage/NewsArchive/Delta-Air...