Prepare for ASI-style questions by practicing the part-map method: read a fact pattern, name every party and certificate involved, assign the governing 14 CFR part to each conduct, and only then choose the oversight response. Build a one-page map of the parts most relevant to your specialty and drill it against written scenarios until assignment becomes automatic.
Why assigning the governing part comes before any rule recall
Scenarios you study will describe conduct involving several parties. Your first task is to decide which 14 CFR part regulates each party's conduct, because the part determines the duty, the responsible person, and the possible oversight response.
A single maintenance scenario can touch Part 43 (maintenance performance), Part 65 (certification of airmen such as mechanics), Part 91 (operator duties), and Part 145 (repair stations). If you cannot name which part attaches to which party, memorized rules become interchangeable in your mind and similar-sounding answer choices become indistinguishable. The part-map method fixes this by making party-and-part assignment the first, deliberate step of every scenario you study.
Build the map on paper before drilling. List the core parts for your specialty, and under each write: who the part regulates, the key duty it imposes, and the certificate or document it produces. When you read a practice scenario, annotate it the same way before considering answers. Two focused paragraphs of annotation per scenario will do more than re-reading the rules, because the skill these drills build is routing facts to rules, which is a different ability from reciting rules in isolation.
- Part 43: how maintenance, preventive maintenance, rebuilding, and alteration are performed and returned to service.
- Part 65: certification of airmen other than flight crewmembers, including mechanics and repairmen.
- Part 91: general operating and flight rules, including operator airworthiness responsibilities.
- Part 121 and Part 135: certificated air carrier and commuter/on-demand operations.
- Part 145: certificated repair stations and their quality control systems.
- Part 5: Safety Management Systems for certificate holders.
Telling certificate types apart: airman, operator, product, and station
The FAA issues different certificates to different subjects: airmen, operating certificate holders, production and type certificate holders, and repair stations. Each certificate carries distinct privileges, duties, and amendment or suspension mechanics you must keep separate.
An airman certificate (for example, a mechanic certificate under Part 65) belongs to an individual and evidences personal qualification. An operating certificate under Part 119 authorizes a company to conduct 121 or 135 operations, and the company's detailed authorizations live in its operations specifications. A type certificate and production approvals attach to aircraft design and manufacture under Part 21, while a Part 145 repair station certificate authorizes an organization to perform maintenance within defined ratings. These four families differ in scope, duration, and how they change.
Compare them directly in your notes: who holds it, what it authorizes, what document details the authorizations, and how it changes (renewal, amendment, or issue of a new document). A mechanic certificate lists ratings the individual holds; operations specifications list aircraft, locations, and authorizations for an operator; a repair station's operations specifications do the same for maintenance ratings and capabilities. Scenarios that look alike become easy to untangle once you ask first: whose certificate is this, and which document expands or limits it?
| Certificate family | Typical holder | Governing part | Document that details authorizations |
|---|---|---|---|
| Airman (mechanic, repairman) | Individual | Part 65 | Certificate with ratings |
| Air carrier / operator | Company | Part 119 (operations under 121/135) | Operations specifications |
| Repair station | Maintenance organization | Part 145 | Repair station operations specifications |
| Design / production | Manufacturer | Part 21 | Type certificate, production approvals |
| Airworthiness | Aircraft (issued to owner/operator record) | Part 21 / Part 43 ties | Airworthiness certificate |
Continued airworthiness: separating Part 43 work standards from station duties
Continued airworthiness scenarios involve three distinct layers: how the work was performed (Part 43), the maintenance organization's system (Part 145), and the operator's responsibility (Part 91 or the operator's own program). Mixing these layers produces wrong respondents and wrong findings.
Worked scenario: a turbine engine overhaul is performed at a Part 145 repair station using a method not in the manufacturer's maintenance manual and not otherwise acceptable to the FAA. A mechanic then approves the engine for return to service. A plausible mistake is to treat this purely as an operator violation under Part 91, blaming the aircraft owner for flying with a nonstandard overhaul. That mislabels the conduct: the substandard method was performed by the station's personnel during maintenance, not by the operator.
The better decision maps each party to its own part. Part 43 sets the performance standards for the maintenance itself, including acceptable methods and the return-to-service approval. Part 145 implicates the station's quality control system, which should have caught the nonstandard method before release. The operator's duty under Part 91 concerns accepting the aircraft and maintaining airworthiness through its own program. Why it matters: identifying the correct respondent and part determines what evidence you gather, which finding you articulate, and which tool — a compliance conversation, a certification action against an individual, or action against the station's certificate — fits the facts.
Operator certification: when an OpSpecs change is not a routine update
Part 119/121/135 operators fly under both an operating certificate and operations specifications. Small changes are handled as OpSpecs amendments, but significant changes require the full certification process and formal findings before any authorization issues.
Worked scenario: a Part 135 operator requests to add a new aircraft type and extend its authorized area of operations. A plausible mistake is treating the request as an administrative OpSpecs edit one inspector can process quickly, since the operator already holds a valid certificate. This skips the analytical work the authorization actually depends on: demonstrating the operator's systems, training, manuals, and management can support the new type and area.
The better decision is to recognize a significant change and route it through the certification team sequence — pre-application meeting, formal application, document compliance review, demonstration and inspection, then findings and OpSpecs amendment. The inspector must be able to make the required findings that the operator is properly and adequately equipped and able to conduct the proposed operations safely. Why it matters: an authorization issued without those findings has no analytical foundation, and the inspector's professional record rests on the quality of the findings, not the speed of the paperwork. Contrast this with genuinely minor changes, such as updating a listed contact or a non-substantive revision, which the amendment process handles directly.
Safety Management Systems: the four components applied, not listed
Under Part 5, an SMS has four components: safety policy, safety risk management, safety assurance, and safety promotion. Practice tracing a certificate holder's actual process to a component and judging whether the process is functioning, rather than only listing the names.
Distinguish the components by their function. Safety policy establishes the organization's commitments, accountability, and documented processes. Safety risk management is the forward-looking analysis applied to new or changed systems — identifying hazards, assessing risk, and deciding on controls. Safety assurance is the feedback loop: audits, evaluations, and continuous monitoring that verify controls work and catch emerging problems. Safety promotion covers training, communication, and competence so people can execute the system. A change-driven hazard analysis belongs to SRM; an audit finding that a control drifted belongs to safety assurance.
Practice by classifying short vignettes: a carrier designing risk controls for a new destination route (SRM), a quarterly internal audit of deicing performance (safety assurance), revised recurrent training on the hazard reporting program (safety promotion), and management's signed policy defining accountability for risk acceptance (policy). Then go one step further and judge integration: a more demanding vignette will show a hazard identified in assurance that never re-entered risk assessment. Your analytical task is to articulate which component failed and what the certificate holder's own documented system required, not merely to recite the four names.
Enforcement and compliance: matching the tool to the conduct and the holder
The FAA's oversight spans informal compliance actions and formal legal enforcement, including certificate actions such as suspension or revocation and civil penalties. Selection depends on the nature of the conduct, the holder's response, and what the certificate or penalty regulates.
The FAA's compliance and enforcement framework distinguishes compliance-oriented responses from legal enforcement. Compliance responses address deviations that were unintentional, promptly reported, and corrected, using tools such as counseling, additional training, or corrective action plans. Legal enforcement addresses conduct warranting formal sanction: certificate actions against airmen or certificate holders, and civil penalties. As an inspector, you frame the facts so the appropriate tool is evident — the legal theory, the specific regulation violated, and the evidence supporting each element.
Practice with paired vignettes. A self-disclosed paperwork lapse, corrected immediately under the holder's own program, points toward a compliance response focused on fixing the system. The same lapse concealed over multiple audit cycles points toward legal enforcement, because the systemic integrity issue is the concealment. Certificate action against an individual mechanic and civil penalty action against a corporation regulate different subjects, so the same fact pattern can support different tools against different respondents. Write one sentence per vignette stating the violation, the respondent, and the tool, then check whether each element of the stated violation actually maps to your facts.
An adaptable ASI preparation sequence with a self-check rubric
Prepare in three passes: build the part map, drill scenario annotation daily, and finish with enforcement selection and integration vignettes. Grade yourself with a rubric measuring routing accuracy, not time spent or pages read.
The daily exercise — the part-map drill: take one written scenario (from any study set or one you write), and before looking at answers write four lines: the parties and certificates involved; the governing part for each party's conduct; the certificate or document implicated; and the oversight tool that fits. Check your lines against the rules you are studying, and note every line you got wrong in an error log grouped by part. Run one scenario per study day and five per review weekend.
Self-check rubric for each scenario (score 0-2 per line, milestone target of 8 of 8 by week three, which is a learning milestone, not a pass prediction): parties identified completely; correct part assigned to each party; certificate/document correctly named; oversight tool matches the conduct's character. An adaptable sequence: weeks one and two, build the part map and drill single-party scenarios; weeks three and four, drill multi-party scenarios like the engine overhaul above; weeks five and six, add enforcement selection and SMS classification vignettes; final week, mix all types untimed, then review only your error log. For administrative matters such as ASI position requirements and hiring, consult the FAA's careers pages directly (faa.gov/jobs) rather than secondary summaries.
- Weeks 1-2: part map construction; single-party scenarios; error log started.
- Weeks 3-4: multi-party scenarios; continued airworthiness and operator certification cases.
- Weeks 5-6: SMS component classification; compliance-versus-enforcement pairing.
- Final week: mixed untimed sets; error log review only; rubric target 8 of 8.
- Ongoing: rewrite any scenario you miss as a fresh one and re-drill it a week later.
References and further reading
Use these references to explore the concepts and check the latest information from the relevant organizations.