An RII is a maintenance task whose incorrect performance could cause catastrophic failure — such as flight control rigging — and which therefore requires an independent second inspection by a separately authorised person. The EASA equivalent concept is the independent or duplicate inspection.
A Required Inspection Item (RII) is a maintenance task designated by the operator or regulator as so critical that its incorrect performance could cause catastrophic failure — flight control rigging, primary structure attachment, engine controls. RII tasks require an independent inspection by a second, separately authorised person before the aircraft can be released: the mechanic who performed the work cannot inspect their own installation.
The concept exists in both major systems: RII is the FAA term (rooted in Part 121/135 and adopted widely in maintenance programmes), while EASA regulations require an equivalent 'independent inspection' after disturbing critical control systems. The lists of designated items, the authorisation of inspectors and the documentation of both signatures are all controlled elements.
Why it matters for flight schools
RII discipline is a classic audit focus because failure is binary and the accident record behind the rule is grim — mis-rigged controls have killed. For training fleets, the practical exposure is high turnover of simple maintenance touching control runs (cable tensions, trim systems) across many aircraft. Records must show two signatures on every designated task; a single-signature RII in the paperwork is an immediate finding and, worse, a genuine safety gap.
How FlightLogger handles it
FL Maintenance flags RII/independent-inspection tasks on the work order itself and blocks the release workflow until the second authorised signature is captured — making the double-check structural instead of procedural.
Frequently asked questions
What is the EASA equivalent of an RII?
The independent inspection (sometimes called duplicate inspection), required after maintenance that disturbs flight controls or other critical systems. The principle is identical: a second authorised person independently verifies the work before release.
Who decides which tasks are RIIs?
The operator's maintenance programme or the maintenance organisation's procedures designate them, within the regulator's framework. Typical items involve flight controls, primary structure and systems whose failure would be catastrophic.