Who is accountable when identity drift or excessive access affects regulated aviation operations?

Accountability typically sits with the organisation’s security, IAM, and operations leaders together, because identity drift is both a governance and operational risk. Regulators expect critical access to be monitored, reviewed, and corrected before it impacts safety or continuity. Teams should define ownership for discovery, remediation, and exception handling so gaps do not remain unresolved across departments.

Why This Matters for Security Teams

Regulated aviation operations treat identity drift as more than an IT hygiene issue because excessive access can affect dispatch tooling, maintenance systems, flight ops coordination, and audit evidence. When access expands without clear ownership, the organisation may still appear compliant on paper while critical entitlements drift beyond approved boundaries. That is why accountability has to span security, IAM, and operations, not sit in a single queue.

Current guidance suggests aligning this problem to formal control ownership, continuous review, and exception handling. The OWASP Non-Human Identity Top 10 and NIST Cybersecurity Framework 2.0 both reinforce the need to know who owns identity risk, who approves exceptions, and who remediates drift. NHIMG’s Ultimate Guide to NHIs notes that 97% of NHIs carry excessive privileges, which is a useful signal for aviation teams because over-permissioned service accounts often sit closest to operational systems.

In practice, many security teams encounter the real impact only after a maintenance or operations workflow has already used excess access, rather than through intentional governance checks.

How It Works in Practice

Accountability should be defined as a shared control with distinct responsibilities. Security typically owns policy, detection, and escalation. IAM owns entitlement design, access review mechanics, and identity lifecycle controls. Operations owns business justification, system dependency mapping, and the decision to accept or remove access that affects flight or maintenance continuity. In regulated aviation, that split matters because a system owner may understand operational impact, while security may see the drift first.

The practical model is to tie every privileged non-human identity to a named business owner, a technical owner, and a review cadence. For higher-risk accounts, use short-lived access, stronger approval workflows, and documented exception expiry dates. The NIST SP 800-53 Rev. 5 Security and Privacy Controls supports this approach through access control, audit, and accountability requirements, while NHIMG’s Lifecycle Processes for Managing NHIs stresses lifecycle governance from provisioning through offboarding.

• Define one accountable owner for discovery of drift and one for remediation approval.
• Require evidence of business need for every privileged aviation-related NHI.
• Review service accounts, API keys, and automation tokens on a fixed cadence.
• Escalate exceptions with an expiry date, not an open-ended waiver.
• Record remediation in audit-ready logs so ownership cannot be disputed later.

NHIMG’s research also shows that only 5.7% of organisations have full visibility into service accounts, which explains why drift often persists until audit, incident response, or a safety-adjacent outage exposes it. These controls tend to break down in highly integrated aviation environments where legacy systems, third-party maintenance platforms, and shared automation accounts make ownership and revocation dependencies difficult to map quickly.

Common Variations and Edge Cases

Tighter access governance often increases operational overhead, requiring organisations to balance safety assurance against turnaround time and maintenance availability. That tradeoff is especially visible in aviation, where a delayed entitlement review can affect dispatch, engineering support, or vendor coordination.

There is no universal standard for this yet, but current guidance suggests that regulated operators should treat “temporary” elevated access as a controlled exception with a named expiry and documented review. Shared accounts, outsourced maintenance, and emergency break-glass access are the most common edge cases. They are not inherently non-compliant, but they become risky when no one owns revocation or when operations teams assume IAM will clean up after the fact.

NHIMG’s Regulatory and Audit Perspectives is useful here because regulators care less about internal team boundaries and more about whether access was monitored, reviewed, and corrected in time. The most defensible model is a RACI-style ownership map with a formal sign-off path for exceptions, especially where third-party or safety-critical systems are involved. In mature programmes, accountability is not disputed after the fact because the decision trail already exists.

Related resources from NHI Mgmt Group

• When do API-based workflows create more access risk than they reduce in identity operations?
• Who should be accountable for access governance when enterprises use a partner to implement identity controls?
• Who is accountable when natural language access requests result in excessive permissions?
• Why do identity and access management controls matter so much in regulated professional services environments?