Aviation glossary · Limits and countersHalf-life
half-time
A valuation and lease term describing an asset roughly midway between major maintenance events — about half its interval used, half remaining.
Why it matters
Lease agreements are written around this condition, so the difference between actual status and half-life is money. It is computed from the same counters that have to be right everywhere else.
In AerSynx
Portfolio analytics read the maintained record rather than a separate commercial spreadsheet, so the technical status and the financial position are the same number. Portfolio →