The distinction between dry and wet lease is often presented as technical. In reality, it is evidential.
A dry lease transfers the aircraft without crew, implying that the lessee assumes operational control. A wet lease (ACMI) includes crew and operational responsibility, typically aligning more closely with AOC-based commercial activity.
However, authorities do not rely on labels. They assess:
- who determines routing and scheduling
- who controls crew and maintenance decisions
- whether the aircraft is genuinely available to third parties
Where a dry lease is used, but operational decisions remain with the owner, the arrangement is recharacterised. Where a wet lease exists, but third-party use is not substantive, commercial qualification under Article 148 may still fail.