Production handover: the point at which responsibility for output passes

Handover is a decision somebody makes, not a date on a plan

Projects finish because their funding does, and teams disperse whether or not the plant is ready. Naming a person who decides that responsibility has passed, and giving them the standing to say not yet, is what stops a schedule from making the judgement. The decision should be visible to both organisations, because a manufacturer that believes it is still supported behaves differently from one that knows the product is now its own. The most common failure pattern is a slow fade, where the launch engineer keeps answering calls for months and nobody can say who owns the process.

Agree what readiness looks like before the ramp starts

Criteria set at the end of a programme are always negotiated downward under pressure, so write them at the beginning. Typical content covers sustained output at rate across consecutive runs, quality performance within agreed bounds without special supervision, trained and assessed operators on every shift including the ones you never visit, released documentation matching what the line actually does, tooling and fixtures in verified condition with spares identified, measurement equipment calibrated and correlated, materials qualified with approved sources, and the plant's own planning system carrying the product. Each item wants evidence attached, not an opinion.

Be explicit about what passes and what stays with you

Responsibility is not a single object. It includes daily scheduling, component purchasing and inventory, process control and adjustment, quality release, disposition of nonconforming material, first-line investigation of defects, packaging and dispatch documentation, and often service or spare parts supply. Some of these move entirely, some are shared, and some stay with the product company, particularly design authority and anything customer-facing. Write the split down role by role and confirm the receiving side has the people to carry it. Ambiguity here surfaces the first time a decision is needed quickly and both organisations wait for the other.

Plan the overlap instead of leaving it to goodwill

A defined support period after handover works better than either an abrupt exit or an indefinite presence. State how long it runs, who is available, how they are contacted, what response is expected, and what happens if issues remain open when it ends. Set the exit condition in terms of performance rather than time, so an unstable process does not lose its support simply because the calendar advanced. Equally, give the manufacturer room to solve problems without your engineer stepping in, since a plant never allowed to struggle never develops the capability you are relying on.

Close it with a record both sides sign

The closing pack should list the evidence against each readiness criterion, the items accepted as open with an owner and a date, the agreed support arrangement, the contacts on both sides, and the monitoring regime for the first period of routine supply. That last element matters: watch output, quality and delivery more closely for a while, with a defined trigger for reinstating support if performance slips. A handover recorded properly also gives you a baseline. When performance degrades a year later, you can show what the plant was demonstrably capable of at the point it took over.

Frequently asked questions

Can we hand over with open items outstanding?

Usually yes, provided each is written down with an owner, a date and an agreed consequence if it slips. Waiting for a perfectly closed list keeps a launch team in place indefinitely and teaches the plant that somebody else solves its problems. What should not be carried across are open items affecting safety, regulatory status, or the plant's ability to detect a defect, since those undermine the basis on which responsibility is being passed at all.

Who should sign the handover on each side?

Somebody with operational authority rather than project authority. On your side that is typically the person accountable for continued supply of the product, not the launch manager whose objective is to finish. On the manufacturer's side it should be the plant or operations leader who will own the output, plus their quality function, rather than the business development contact who won the work. Signatures from people who will not be there next quarter make the record ceremonial.

What do we do if performance falls away shortly after handover?

Establish first whether the process degraded or was never genuinely stable, because the remedies differ. Compare current data against the evidence gathered at handover, look at what changed in people, materials, tooling condition or scheduling pressure, and check whether an agreed control was quietly dropped. Reinstating support temporarily is sensible, and worth planning for in advance so it does not become a negotiation. Then update the readiness criteria for your next product, since a rapid fall usually means a criterion was measured too kindly.