What does ATP stand for?
| Full form | Authority to Proceed |
|---|---|
| Category | Business & work |
| Type | Initialism |
The initialism ATP stands for Authority to Proceed in project schedules and authorization records. NASA uses this expansion as a milestone in spacecraft development scheduling.
NASA’s SMART description measures development intervals from ATP and distinguishes actual milestone dates from forecast dates. An expected ATP date in a schedule is therefore different from a recorded actual milestone. The letters alone do not show who granted authority, what work was covered or which decision record documents it.
Meaning in context
- Authority
- The authorization context in this expansion, rather than an estimate of likely approval.
- to Proceed
- The next-work milestone reference; identify the work and record instead of assuming unlimited permission.
Practical examples
Keep forecast and actual separate
- Before
Our forecast ATP date means authority was already granted.
- After
Label the ATP date as forecast until the actual decision or milestone record supports an actual date.
The original example keeps a planned milestone from becoming a statement about an event that occurred.
Keep scope visible
- Before
An ATP reference approves every possible change to the project.
- After
Identify the decision record and the work scope actually described by the authorization.
The abbreviation cannot fill in an absent decision maker or scope. This is a record-reading distinction, not an issued authorization.
Original illustrative examples, not quotations or reports of actual events.
Use ATP with clarity
Does an ATP date in a planning spreadsheet prove authority has already been granted?
See all guidance
Read a forecast
Keep the planned status explicit beside the date.
Forecast ATP milestone; actual decision not established here.
Read an actual milestone
Identify the record supporting the actual date.
Actual ATP date with its supporting record.
Clarify scope
Ask which work and decision record the reference covers.
Which decision documents authority for this work?
The draft identifies a status question. It grants no authority, confirms no decision and cannot replace the applicable authorization record.
Help improve this entry
Spot a mistake or have a clearer example? Suggest a change.
By AcronymIndex Editorial Team · Editorial policy