Parts Lead Time & Exposure Calculator

Because an aircraft part without its release documentation (FAA 8130-3, EASA Form 1, or both for dual-release) cannot be installed — it's a paperweight with a tracking number. Vendors quoting 'ships today' sometimes mean the part, not the paperwork; tag preparation, dual-release processing or trace assembly can add days. Asking 'ships WITH tags, when?' is the single highest-value question in parts procurement.

Incomplete commercial invoices, missing or mismatched part/serial data against the airworthiness tags, valuation queries, and country-specific import rules for aerospace goods. A good freight forwarder with aerospace experience clears in a day what a generalist takes a week over. For recurring international sourcing, the broker relationship is worth more than any single shipping discount — price it into the chain.

In order of leverage: stock the predictable failures yourself (the AOG calculator funds this list), maintain accounts with the two fastest distributors rather than the one cheapest, pre-clear paperwork templates with your customs broker, and keep your aircraft's part-number alternates list current so a superseded number doesn't restart the search. Each removes a link from the chain this calculator measures.

Only you. Entries live in your browser's local storage and never leave your device, so there is no account, no cloud sync and no one else with access. Because the data is device-local, export a CSV backup before clearing browser data or switching computers.

A plain CSV with one row per entry and labelled column headers — the most portable format there is. Spreadsheets open it directly, most specialised software can map it on import, and a printed copy is perfectly legible to a human reviewer. Nothing proprietary means your lead-time comparison is never trapped here.