Development assurance

ARP4754A to ARP4754B transition review for what the B revision changes for your program

This review supports OEMs, avionics suppliers, Certification teams during New program planning or basis discussion. EE reads plan set against revision-B process and objective changes, tightened integration between development assurance and the 4761A safety methods, validation and verification expectations against configuration records, approval assumptions, and the cited source material. The buyer receives a concise package showing what is proven, what is inconsistent, and what should be resolved before submittal, installation, import, or purchase.

What gets reviewed

Trace plan set against revision-B process and objective changes against the claim it supports.
Challenge tightened integration between development assurance and the 4761A safety methods against the claim it supports.
Reconcile validation and verification expectations against the claim it supports.
Confirm authority positions on which revision applies to the basis against the claim it supports.
Index approval basis against the claim it supports.
Compare configuration definition against the claim it supports.

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

Limit carryover: plan set against revision-B process and objective changes fails review if the cited record cannot be tied to the current baseline.
Source control: tightened integration between development assurance and the 4761A safety methods fails review if the cited record cannot be tied to the current baseline.
Closure owner: validation and verification expectations fails review if the cited record cannot be tied to the current baseline.
Configuration match: authority positions on which revision applies to the basis fails review if the cited record cannot be tied to the current baseline.
The review notes that evidence link: approval basis fails review if the cited record cannot be tied to the current baseline.

Evidence normally required

Analysis note: plan set against revision-B process and objective changes
Manual source: tightened integration between development assurance and the 4761A safety methods
Configuration item: validation and verification expectations
Closure evidence: authority positions on which revision applies to the basis
Baseline record: approval basis
Test file: configuration definition

Common discrepancies

Buyer concern: plans citing 4754A while safety deliverables follow 4761A structures that do not line up.
Program risk: mid-program revision switches with no gap analysis.
Authority question: contract flowdowns pinning suppliers to a different revision than the program plan.
Finding in records: baseline does not match the delivered records.

How the work runs

Frame Arp4754a Arp4754b

Confirm the exact event, affected file set, buyer role, and decision standard before any plan set against revision-b process and objective changes is treated as sufficient.

Trace Review Evidence

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 Changes Program

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

Package Assurance Arp4754

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

The review notes that evidence map for Arp4754a To Arp4754b Transition Review
Discrepancy register for Arp4754a To Arp4754b Transition Review
Applicability and approval basis summary
Source record request list

Who uses the output

systems engineering managers use the map to brief the decision.
certification managers use the register to assign closure.
safety managers use the request list to collect source records.

How the work fits into the transaction or program

For a program planned under ARP4754A, what the move to ARP4754B (with ARP4761A) changes in plans, safety integration, and evidence, and whether mid-program adoption is worth it. The evidence set centers on the plan set against revision-B process and objective changes, the tightened integration between development assurance and the 4761A safety methods, validation and verification expectations, and authority positions on which revision applies to the basis. The likely weak points are plans citing 4754A while safety deliverables follow 4761A structures that do not line up, mid-program revision switches with no gap analysis, and contract flowdowns pinning suppliers to a different revision than the program plan. The output gives the systems engineering manager a cleanup register for ARP4754A to ARP4754B transition review for what the B revision changes for your program before new program planning or basis discussion.

Start with a single asset

Confirm requirements map to substantiating evidence.

Regulatory limits

EE does not certify equipment, approve installations, or declare an aircraft compliant. The output identifies supportable claims, missing records, and questions that need applicant or authority disposition.

Specific to this review

for a program planned under ARP4754A, what the move to ARP4754B (with ARP4761A) changes in plans, safety integration, and evidence, and whether mid-program adoption is worth it.
Plan set against revision-B process and objective changes often controls whether later summaries can be trusted.
Plans citing 4754A while safety deliverables follow 4761A structures that do not line up is treated as a record gap until an owner closes it.
FAA and EASA evidence should stay distinguishable from commercial claims and installer notes.
The scope uses the Arp4754a Arp4754b Transition Review question as the control point, so the review stays tied to New program planning or basis discussion and the buyer decision behind it.
The evidence starts with Plan set against revision-B process and objective changes and follows Evidence Revision Changes Program 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 systems 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 Development Assurance Arp4754 Adoption questions in the records or certification lane and sends technical acceptance issues to the authorized people who own them.
The handoff value comes from Evidence map for Arp4754a To Arp4754b Transition Review; it gives the next reviewer a precise map instead of another broad request for a better file.

Sources

ARP4754B - Guidelines for Development of Civil Aircraft and Systems

SAE International. Development assurance process at aircraft and system level, including requirements capture and validation.

ARP4761A - Guidelines and Methods for Conducting the Safety Assessment Process

SAE International. Safety assessment methods (FHA, PSSA, SSA, FTA, FMEA) supporting development assurance level assignment.

Frequently asked questions

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

The scope is tied to arp4754a arp4754b transition review and to the decision named in the request. A general audit can list weak records; this pass ranks the gaps by whether they block new program planning or basis discussion or can be closed later without changing the decision.

What evidence has to be available before this work starts?

The starting point is plan set against revision-b process and objective changes, 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 systems 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

SAE ARP4754B, Guidelines for Development of Civil Aircraft and Systems (ARP4754B)SAE ARP4761A, Guidelines and Methods for Conducting the Safety Assessment Process on Civil Airborne Systems and Equipment (ARP4761A)ARP4754B, Guidelines for Development of Civil Aircraft and Systems Validation DAL Allocation and Partitioning Guidance Material

AC 20-152A scope support for which hardware now needs DO-254 evidencePlanning ac 20 152a do-254 scope? EE reviews certification records, configuration limits, and missing support,ARP5150/5151 in-service safety for closing the loop from field data to safety assessmentPlanning arp5150 5151 in service safety assessment? EE reviews safety assessments, configuration limits, and m ARP4754B development-assurance support at the system levelDAL assignment, requirements validation, and the tie to software and hardware assurance all get read hard. We ARP4761A safety-assessment support for airborne systemsA safety case that breaks between FHA, PSSA, and SSA takes the DAL assignment with it. We check the chain and Certification-basis mapping for a certification programMiss a special condition now and it surfaces as a finding later. Get a documented certification basis, each re

Where this fits

Service: TSO and STC Certification 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.

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