Part 21J (DOA) Office of Airworthiness, Cabin Safety Compliance Verification Engineer, Cabin interior design engineer, and any individual involved in certification of Cabin modification, refurbishment, interior configuration change in large aircraft.

Alternate Part 21J (ADOA) applicants who involve in design & modification of cabin interior, refurbishment and interior change and its certification process.

Part 21 G (POA) quality manager, production manager, Flammability Compliance Verification Engineer, authorized signature holders or any individual involved in production of the cabin items & testing.

Part 145 large aircraft inspectors, certifying staff and continued airworthiness managers involved in cabin safety, maintenance, operation and instruction for continued airworthiness.

Any individual, consultants or organizations that involve in minor/major (STC) modification and / or repair in large aeroplane in terms of cabin re-configuration & modification.