Aviation Legislation
What the module tests
Aviation legislation covers the regulatory chain from ICAO to Iran CAO national requirements, including Part-66 licences, Part-145 organisations, Part-M continuing airworthiness and Part-147 training. Expect privileges, categories, records, airworthiness directives and maintenance release questions.
Core rules
- ICAO Annex 1 sets personnel licensing standards; Iran CAO implements them through national regulations and Part-66-style requirements.
- Part-66 defines the aircraft maintenance licence categories: A, B1, B2 and C, with type ratings where required.
- A category is limited to specified scheduled maintenance and minor repairs; B1 covers airframe, engine and mechanical systems; B2 covers avionics and electrical systems; C covers base maintenance certification in an approved organisation.
- Certification must be against approved data, within privilege and within the type rating.
- Part-145 organisations control maintenance, quality and release; Part-M covers continuing airworthiness and maintenance records.
- Airworthiness directives are mandatory; service bulletins are normally advisory unless made mandatory.
Worked example
A B2 licence holder is asked to certify replacement of a flap actuator and the subsequent rigging check. What is permitted? The actuator replacement may include avionics disconnects, but the mechanical rigging and adjustment are B1 tasks. The B2 holder may certify the avionics portion if within type rating and company authorisation; the rigging must be certified by an appropriately type-rated B1 holder, or the task split. Signing the whole job outside privilege is a regulatory breach.
Traps
Assuming a B2 can certify any task on a type-rated aircraft; forgetting type ratings; confusing organisation approval with personal privilege; treating an SB as automatically mandatory; missing record retention requirements.
Exam approach
Identify the category, the task type, the approved data and the type rating before deciding who may certify.