How does ch-aviation determine and classify lease end dates?

Lease end dates help you understand how long an aircraft is expected to stay with its current operator. Since not all data comes from the same level of certainty, we classify this information into two main categories: Confirmed and Estimated.

1. Confirmed Lease End Dates

A "Confirmed" classification means we have a verified source for the lease end date, such as a securitization report, a news article, or a direct statement from an airline representative. There are two sub-types:

• Confirmed Lease End Date (Actual): A specific, fixed date on which the lease is confirmed to end.
• At Least Leased Until (Confirmed): A confirmed minimum date the aircraft will remain on lease, without a fixed end date.

Example: If American Airlines states they plan to keep their fleet of leased 717s operational until at least 2025, and will decide on next steps after that, this is recorded as "At Least Leased Until (Confirmed): 2025."

2. Estimated Lease End Dates

When no confirmed source is available, we may estimate a lease end date based on industry patterns and available data. These estimations can be either an educated calculation or a broader approximation — we do not distinguish between the two when displaying this information to customers.

Estimation methodology: In cases where no confirmed information is available, we estimate the first lease period to last 12 years, with possible extensions of up to 5 years maximum.

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