Gas turbine outage spares planning: build a reliable list
Turn inspection scope, failure history and lead-time risk into a practical outage inventory plan.
The most expensive outage part is the one that arrives after the unit is already open. A reliable spares plan connects the inspection scope to real lead times, condition risk and the order in which work will actually happen.
Start with the inspection scope
List the work packages and the parts each one may require. Separate confirmed replacements from contingency items. The goal is not to order everything; it is to know what must be on site before a specific work package starts.
Rank every line by risk
- Critical: stops the outage if missing, long lead time, no on-site spare.
- High: likely to be replaced, moderate lead time, limited alternative.
- Medium: contingency item with a workaround or repair option.
- Low: consumable or long-life item that can be replenished later.
Check the real lead time
Lead time includes identification, inspection, documentation and packing, not only transit. For legacy parts, add time for cross-referencing. For repaired parts, add the repair cycle. Confirm the dates in writing and build a buffer for the critical lines.
Stage by work package, not by supplier
Parts are often delivered in supplier batches but needed in outage sequence. Ask for a staging plan that groups deliveries by the work package and date they are required. Label each package with the part number and work package reference.
Keep a live contingency list
Inspection findings change the scope. Keep a short list of approved contingency parts and suppliers so the team can react without starting a new procurement cycle from zero.
Frequently asked questions
How early should outage spares be ordered?
Order critical and long-lead items as soon as the scope is credible. Legacy or repaired parts often need the most lead time.
What is outage pre-staging?
Pre-staging means reserving, inspecting and delivering parts in the sequence the outage crew will need them, rather than in one delivery batch.
Can AGO Aviation help prioritise an outage list?
Yes. Send the scope and required dates, and we will flag availability, lead time and supersession risk line by line.
Need help with a part?
Send your part number and we will verify availability.
AGO Aviation supplies gas turbine, compressor, valve, automation, instrumentation and mechanical spare parts worldwide. Share a part number, drawing or nameplate photo and our team will respond with availability, lead time and pricing.