What a certificate covers
How one certificate covers installed equipment, why installation changes need a new certificate, and why certificates are never edited
One certificate covers installed equipment
When you certify equipment as serviceable, the certificate covers that equipment and everything installed in it that day.
A certificate on a rig covers the rig, the canopy in it and the lineset on the canopy.
This means you usually sign once at the level where the work finished. If you fit a reserve into a container, sign the container. Do not sign each piece separately.
If you record no installations, a certificate covers only the equipment it names.
Each certificate has a reference such as CERT-18. The certificate page uses this reference as its title. Quote it when another person must open the same certificate.
The certificate also shows the reference for each issue, defect and task that it lists. A draft shows these stored record references. It does not invent a certificate reference before you sign.
Installing equipment into equipment explains how to record installations.
Installation changes need a certificate
An installation or removal takes the changed equipment out of service.
The changed equipment is the one whose contents changed. Fit a reserve into a container, and the container goes out of service. The reserve does not, unless its own contents changed.
Move a reserve from one harness to another, and both harnesses go out of service. One lost a component. The other gained one.
The equipment stays out of service until somebody certifies it as serviceable.
Putting the same component back
Putting the same component back does not release the equipment.
A certificate records an act, not a permanent arrangement. If you take equipment out and put it back, somebody must check it and sign again.
What is fixed when you sign
A certificate covers what was installed when you signed, as the record stood at that time.
When the certificate releases a change to what is installed, it lists that change with the day it happened.
Later records do not edit the certificate. If somebody records an older installation next month, your certificate does not stretch to cover it.
Certificates are never edited
KitNDocs never voids or rewrites a certificate. It stays as it was signed.
Service state is a different question. KitNDocs works out whether equipment is in service from the current record. A later installation can take equipment out of service, but it does not change the old certificate.
What a certificate does not do
A certificate does not clear every issue, defect or completion because it covers installed equipment. It clears only what it lists.
A certificate does not reach upward. A certificate on a reserve says nothing about the container it sits in.
A certificate does not check fit or compatibility. KitNDocs does not know what fits where. Your signature says you checked.
Related
- Taking equipment out of service lists service-state reasons.
- Installing equipment into equipment explains installations and removals.
Updated 30 Aug 2026.