Certification data

Obsolete part approval route assessment for pma suppliers

This page is for PMA suppliers, equipment suppliers, operators when OEM part discontinued or unsupported puts obsolete part approval route assessment on the critical path. EE checks part criticality note, available design data, approval route comparison against the approval basis, configuration baseline, effectivity, revision status, and source records named in the brief. The buyer receives a discrepancy register, evidence map, and closure request list for the next review gate. The work tests records and certification-data traceability only; it does not replace authority, delegate, approval-holder, or authorized-person decisions.

When this review is needed

Use this review when OEM part discontinued or unsupported starts driving schedule or commercial exposure.
A supplier or operator engineer searches for PMA versus STC for a replacement part after an OEM discontinues support.
The highest-risk breakpoint is: pursuing PMA identicality without data rights, choosing an STC where a PMA would do at a fraction of the cost, and a grounded fleet while the approval path restarts from scratch.

The problem

The decision is which approval route replaces an unavailable OEM part: PMA (identicality or test-based), an STC when the replacement changes the type design, a DER-approved repair, or an owner-produced part. The file set covers part criticality and available design data, data rights for identicality claims, the install base that amortizes approval cost, and licensing options. Known breakpoints include pursuing PMA identicality without data rights, choosing an STC where a PMA would do at a fraction of the cost, and a grounded fleet while the approval path restarts from scratch.

What gets reviewed

Review the buyer decision in the brief: Help a supplier or operator choose the right approval route for an obsolete-part replacement.
Trace part criticality note to source date, revision, owner, and current configuration.
Match effectivity for available design data to the serial range, article version, aircraft, or fleet in scope.
The decision is which approval route replaces an unavailable OEM part: PMA (identicality or test-based), an STC when the replacement changes the type design, a.

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

Source status: part criticality note must be current enough for the cited approval basis or records event.
Range check: available design data is mapped to the affected aircraft, article, model, or fleet segment.
Package consistency: certificate, matrix, instruction, report, and release references are checked as a set.
Escalation rule: missing rationale is logged as a finding rather than carried as silent credit.

Evidence normally required

Source record set for part criticality note
Program file covering available design data
Configuration baseline with approval basis and revision index
Open issue log tied to approval route comparison

Common discrepancies

The file set covers part criticality and available design data, data rights for identicality claims, the install base that amortizes approval cost, and licensing options.
Known breakpoints include pursuing PMA identicality without data rights, choosing an STC where a PMA would do at a fraction of the cost, and a grounded fleet while the approval.
Revision mismatch leaves approval route comparison separated from the certificate, matrix, instruction, or delivered baseline.
Storage completeness is higher than decision readiness because the file lacks a clear disposition for this buying stage.

What is at stake

Specific exposure for this page: pursuing PMA identicality without data rights, choosing an STC where a PMA would do at a fraction of the cost, and a grounded fleet while the approval path restarts from scratch.

How the work runs

Frame Obsolete Part

Confirm the exact event, affected file set, buyer role, and decision standard before any part criticality note is treated as sufficient.

Trace Approval Path

Walk the named evidence from index entry to source artifact and mark where the trail supports, conflicts with, or fails to answer the page-specific question.

Sort Assessment Pma

Group exceptions by closure route: document retrieval, data correction, engineering disposition, authority response, or contractual decision.

Package Certification Data

Deliver the exception list, evidence map, and owner sequence in a form that can move directly into remediation, submittal cleanup, or transaction negotiation.

What the buyer receives

Obsolete part approval route assessment discrepancy register
source map for part criticality note
effectivity and configuration closure list
decision summary with limits and escalation items

How the work fits into the transaction or program

A supplier or operator engineer searches for PMA versus STC for a replacement part after an OEM discontinues support. The review packages the evidence before that searcher's next gate, so records, engineering, and certification staff can work from the same exception list. The page-specific framing is The decision is which approval route replaces an unavailable OEM part: PMA (identicality or test-based), an STC when the replacement changes the type design, a DER-approved repair, or an owner-produced part. Evidence reviewed: part criticality and available design data, data rights for identicality claims, the install base that amortizes approval cost, and licensing options. Failure modes include pursuing PMA identicality without data rights, choosing an STC where a PMA would do at a fraction of the cost, and a grounded. For obsolete part replacement approval, the practical output is a defensible record of what was checked, what did not match, who owns the fix, and which issue remains outside the review boundary. The obsolete part replacement approval path scope is intentionally narrow: Help a supplier or operator choose the right approval route for an obsolete-part replacement.. The Obsolete Part Replacement evidence question is tested against part criticality note and not against a generic checklist copied from another page. The Approval Path Route trigger is oem part discontinued or unsupported, so the review ranks gaps by decision impact instead of document volume. The Assessment Pma Suppliers searcher pattern is A supplier or operator engineer searches for PMA versus STC for a replacement part after an OEM discontinues support.. The Certification Data Longer evidence trail has to show source location, current status, conflicting entries, and the owner who can close the issue. The Available Stc Der exception logic separates missing artifacts from mismatched data because those findings move through different closure routes. The Repair Owner Produced handoff is written for engineering manager, with unresolved items preserved as decisions rather than softened into narrative prose. The deliverable stays anchored on obsolete part approval route assessment discrepancy register, which makes the next reviewer able to reperform the path without rebuilding the file. The boundary is deliberately explicit: records and certification evidence are organized, but approval, acceptance, and airworthiness decisions remain with the authorized parties. The brief-specific angle is The decision is which approval route replaces an unavailable OEM part: PMA (identicality or test-based), an STC when the replacement changes the type design, a DER-approved repair, or an owner-produced part. Evidence reviewed: part criticality and available design data, data rights for identicality claims, the install base that amortizes approval cost, and licensing options. The failure pattern includes pursuing PMA identicality without data rights, choosing an STC where a PMA would do at a fraction of the cost, and a grounded fleet while the approval path restarts from scratch. The obsolete part replacement approval path obsolete part replacement lane records how route assessment pma affects data longer available, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The obsolete part replacement approval path replacement approval path lane records how pma suppliers certification affects available stc der, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The obsolete part replacement approval path path route assessment lane records how certification data longer affects der repair owner, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The obsolete part replacement approval path assessment pma suppliers lane records how longer available stc affects owner produced obsolescence, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The obsolete part replacement approval path suppliers certification data lane records how stc der repair affects obsolescence selection decision, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The obsolete part replacement approval path data longer available lane records how repair owner produced affects decision which replaces, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The obsolete part replacement approval path available stc der lane records how produced obsolescence selection affects replaces unavailable oem, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The obsolete part replacement approval path der repair owner lane records how selection decision which affects oem identicality test, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The obsolete part replacement approval path owner produced obsolescence lane records how which replaces unavailable affects test based changes, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The obsolete part replacement approval path obsolescence selection decision lane records how unavailable oem identicality affects changes type, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The obsolete part replacement approval path decision which replaces lane records how identicality test based affects obsolete part replacement, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The obsolete part replacement approval path replaces unavailable oem lane records how based changes type affects replacement approval path, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The obsolete part replacement approval path oem identicality test lane records how type affects path route assessment, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The obsolete part replacement approval path test based changes lane records how part replacement approval affects assessment pma suppliers, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The obsolete part replacement approval path changes type lane records how approval path route affects suppliers certification data, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The obsolete part replacement approval path obsolete part replacement lane records how route assessment pma affects data longer available, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The obsolete part replacement approval path replacement approval path lane records how pma suppliers certification affects available stc der, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The obsolete part replacement approval path path route assessment lane records how certification data longer affects der repair owner, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The governing intent remains Help a supplier or operator choose the right approval route for an obsolete-part replacement.. The operating angle for this page is The decision is which approval route replaces an unavailable OEM part: PMA (identicality or test-based), an STC when the replacement changes the type design, a DER-approved repair, or an owner-produced part. Evidence reviewed: part criticality and available design data, data rights for identicality claims, the install base that amortizes approval cost, and licensing options. Failure modes: pursuing PMA identicality without data rights, choosing an STC where a PMA would do at a fraction of the cost, and a grounded fleet while the approval path restarts from.

Start with a single asset

Reduce finding cycles by checking the package first.

Regulatory limits

For obsolete part approval route assessment, EE reviews part criticality note, available design data, approval route comparison for completeness, consistency, and traceability. The work does not issue approvals, approve data, grant relief, validate STCs, accept release certificates, or make airworthiness determinations. Final decisions remain with the responsible authority, delegate, approval holder, operator, or authorized person.

Specific to this review

The decision is which approval route replaces an unavailable OEM part: PMA (identicality or test-based), an STC when the replacement changes the type.
The file set covers part criticality and available design data, data rights for identicality claims, the install base that amortizes approval cost, and.
Known breakpoints include pursuing PMA identicality without data rights, choosing an STC where a PMA would do at a fraction of the cost, and a grounded fleet while.
The scope uses the Obsolete Part Replacement Approval question as the control point, so the review stays tied to OEM part discontinued or unsupported and the buyer decision behind it.
The evidence starts with part criticality note and follows Path Route Assessment Pma references until every exception has a source location and a reason code.
The finding logic separates missing paperwork, conflicting status, stale revision data, and unsupported disposition because each class closes through a different owner.
The timing matters for Engineering manager: the output is useful only if the unresolved items are visible before acceptance, submittal, handback, or negotiation pressure fixes the sequence.
The boundary control keeps Suppliers Certification Data Longer questions in the records or certification lane and sends technical acceptance issues to the authorized people who own them.
The handoff value comes from Obsolete part approval route assessment discrepancy register; it gives the next reviewer a precise map instead of another broad request for a better file.
The source discipline is stricter on this page than on a general audit because the claim being tested is Help a supplier or operator choose the right approval route for an obsolete-part replacement..

Sources

14 CFR Part 21 - Certification Procedures for Products and Articles

U.S. Government (eCFR). Type certificates, STCs (Subpart E), TSO authorizations (Subpart O), PMA (Subpart K), and export airworthiness approvals (Subpart L).

Order 8110.4 - Type Certification

Federal Aviation Administration. FAA type certification process, certification basis establishment, and compliance findings.

14 CFR Part 43 - Maintenance, Preventive Maintenance, Rebuilding, and Alteration

U.S. Government (eCFR). Maintenance recordkeeping content and approval-for-return-to-service requirements, including 43.9, 43.11, and Appendix B.

Frequently asked questions

What makes this workflows review different from a general file audit?

The scope is tied to obsolete part replacement approval and to the decision named in the request. A general audit can list weak records; this pass ranks the gaps by whether they block oem part discontinued or unsupported or can be closed later without changing the decision.

What evidence has to be available before this work starts?

The starting point is part criticality note, the current status source, and any index or matrix that tells reviewers where the supporting artifact should live. Missing inputs are logged as findings rather than filled with assumptions.

Who decides whether an open item is acceptable?

The review explains what the evidence supports and gives engineering manager a closure path. Acceptance remains with the buyer, operator, authority, delegated engineer, or authorized person responsible for the underlying airworthiness or certification decision.

Relevant glossary terms

Parts Manufacturer Approval (PMA)Supplemental Type Certificate (STC)Designated Engineering Representative (DER)Type Design Approved Data 14 CFR Part 21, Certification Procedures for Products and Articles

Multi-STC compatibility data review for mrosMulti-STC compatibility data review for mros, with source-record checks, discrepancy findings, and a closure p Review of supplier certification data oversight for oemsSupplier certification data oversight for oems, with source-record checks, discrepancy findings, and a closure Certification plan support for a PMA article approval packageEvery line in a PMA certification plan is a promise the FAA will collect on. We check the basis, affected area Field-approval data support for one-off alterationsYour one-off alteration needs defensible data for the field-approval route. We assemble the substantiation pac STC certification data support for modifiers and suppliersAssembling an STC package? We help modifiers and suppliers order installation compliance data, then run a gap

Where this fits

Service: TSO and STC Certification For PMA For Equipment

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.

Talk through the aircraft, records, evidence, deadline, and next useful step.

Book a scoping call