Type design
Type-design data-package readiness for certified products
A type-design data-package readiness assessment confirms that the data defining a product's type design is complete, internally consistent, and ready to submit. It serves suppliers and modifiers assembling the definitive data set behind a certificate. The trigger is a package approaching submittal, where the drawings, specifications, configuration items, and supporting data have to form one coherent definition of the design. It examines the type-design definition, the configuration item list, the interface and process specifications, and the data that substantiates them. You receive a readiness assessment against the expected package contents and a closure list of the items that are missing, inconsistent, or not yet at a submittable state.
When this review is needed
- A type-design package is approaching submittal and needs a read for completeness before it goes out.
- The drawings and specifications were produced by separate groups and may not define one consistent design.
- The configuration item list has grown and no longer maps cleanly to the data that defines each item.
- A package is being assembled from an earlier program and needs to be brought to a submittable state.
The problem
A type-design package is the definitive description of what was certified, but it is built by many hands across a program and assembled late. Drawings reference parts the configuration list omits, two specifications define the same interface differently, and process specifications are cited without being included. Each artifact is reasonable on its own, yet together they do not close into a single, consistent definition of the design, and the gaps only show when the package is read end to end.
What gets reviewed
- The type-design definition and whether it forms one coherent description of the product
- The configuration item list against the drawings and data that define each item
- Drawings and specifications for internal consistency and mutual agreement
- Interface and process specifications, included rather than only cited
- The substantiating design data behind the definition
- The state of each artifact against a submittable level of completeness
Scope this review
Tell us the asset, the event, and the evidence in scope, and we will outline a focused first engagement.
Identify what is missing against the means of compliance.
What gets validated
- The type-design definition resolves into one consistent description with no contradictions
- Every configuration item maps to the data that defines it and the reverse holds
- Drawings and specifications agree where they describe the same feature or interface
- Cited process and interface specifications are included, not only referenced
- Each artifact is at a revision and maturity appropriate for submittal
- Substantiating data exists for the elements the definition depends on
Evidence normally required
- The current type-design definition and configuration item list
- The drawings, specifications, and interface documents
- The process specifications the design relies on
- The substantiating design data assembled so far
Common discrepancies
- A drawing referencing parts the configuration item list omits
- Two specifications defining the same interface in conflicting terms
- Process specifications cited but never included in the package
- Configuration items with no defining data behind them
- Artifacts at a draft maturity that the package treats as final
What is at stake
An incomplete or inconsistent package draws questions that cycle before the technical review even begins, and the program loses time to fetching missing items rather than answering substance. A definition that does not close also weakens every later change, because the baseline a change starts from is itself unsettled.
How the work runs
Frame the contents
Set the expected package contents for the product and certification route.
Test for closure
Read the definition, configuration list, and drawings together for consistency.
Check maturity
Confirm each artifact is at a revision and completeness appropriate for submittal.
List the closures
Produce a readiness assessment and a closure list for the open items.
What the buyer receives
- A readiness assessment against the expected package contents
- A closure list of missing, inconsistent, or immature items
- A consistency map across the definition, configuration list, and drawings
Who uses the output
- Certification leads deciding whether the package is ready to submit
- Design engineering resolving the inconsistencies between artifacts
- Configuration management aligning the item list with the defining data
How the work fits into the transaction or program
The assessment looks at the package as a whole and whether it closes into one definition, rather than checking a single evidence type. It precedes the deeper technical review and gives configuration management a baseline that later changes can rely on.
Start with a single asset
Reduce finding cycles by checking the package first.
Regulatory limits
Endeavor Elements assesses the completeness and consistency of the applicant's type-design data. It does not approve the type design, make the compliance finding, or guarantee the package is accepted. The applicant and the authority retain their roles.
What this review does not cover
- Approving the type design or any part of the package
- Making compliance findings on the authority's behalf
- Producing the design data the package is missing
Specific to this review
- A type-design package is the definitive record of what was certified, so internal consistency across its artifacts is itself a certification concern, not only a tidiness one.
- The configuration item list and the defining data must agree in both directions: an item without data and data without an item are both gaps.
- Specifications cited but not included are a recurring readiness gap because the citation reads as complete while the package is not.
- A definition that does not close weakens every future change, since the change starts from a baseline that was never settled.
Sources
U.S. Government (eCFR). Type certificates, STCs (Subpart E), TSO authorizations (Subpart O), PMA (Subpart K), and export airworthiness approvals (Subpart L).
Federal Aviation Administration. FAA type certification process, certification basis establishment, and compliance findings.
SAE International. Development assurance process at aircraft and system level, including requirements capture and validation.
RTCA. Design assurance objectives and lifecycle data for airborne electronic hardware (FPGA/ASIC/PLD).
Frequently asked questions
Do you check the package is correct, or that it is complete?
The focus is completeness and internal consistency: whether the artifacts form one coherent definition and reach a submittable maturity. The compliance finding on correctness remains the authority's.
Relevant glossary terms
Related pages
Where this fits
Talk to an engineer who has done this work
We will walk through your current state, the records or evidence involved, and a scoped first engagement.
Walk through your situation with an engineer who has done this work.