English to Japanese Tech/Engineering Aerospace / Aviation / Space

航空機コンサルタント関連の文書で、次の文脈で使用されています。最初は、船舶や機体のリース終了時の返却の意味で使用されているのだと思ったのですが、複数の文を見ているうちに疑問に思うようになりました。ご教授いただけると幸いです。

- XXX analyses numerous factors including lease rates and liquidity, economic factors such as oil price outlook and the costs around meeting redelivery conditions.
- Late decisions on engine build WILL lead to increased costs and late redelivery.
- Poor contract drafting around redelivery conditions, lessor inspection rights and disputes processes.
- Lessee operational demands consuming redelivery resource.
- We pride ourselves on being able to provide accurate value opinion and commercial advice on all aspects of engine management and are especially experienced at managing engine redeliveries.