31 July 2011 C1 CIVIL AVIATION DEPARTMENT HONG KONG ...

following completion of the review required by the Order. The certificatereferred to under Article 11 of the Air Navigation (Hong Kong) Order 1995 asamended is a Certificate of Release to Service to be issued on completion ofmaintenance of aircraft or components, either required or not required to bemaintained under the provisions of HKAR-145.1.2 In connection with the issue of Certificates of Release to Service, thefollowing definitions apply:(a)(b)(c)(d)(e)(f)Maintenance means any one or combination of overhaul, repair,inspection, replacement, modification or defect rectification of anaircraft/aircraft component.Overhaul means the restoration of an aircraft/aircraft component byinspection and replacement in conformity with an approved standard toextend the operational life.Repair means the restoration of an aircraft/aircraft component to aserviceable condition in conformity with an approved standard.Inspection means the examination of an aircraft/aircraft component toestablish conformity with an approved specification.Replacement is any work operation which involves the removal andreplacement of the same part or the substitution of an approvedalternative part.Modification means the alternation of an aircraft/aircraft componentin conformity with an approved standard.NOTE 1:NOTE 2:Defect rectification normally consists of an element of inspection andtroubleshooting followed by repair and replacement of the defective item.Inspection includes:(i) Mandatory Inspection, an inspection classified as Mandatory by theDirector-General, where the inspection itself is the work. (SeeAirworthiness Notice No.36).(ii) Scheduled Maintenance Inspection, an inspection or maintenanceincluding tests required by the Approved Maintenance Schedule orProgramme.1.3 Although many terms in common usage describe the various aspects ofaircraft engineering, the meanings assigned to such terms are not always thesame. For the purpose of this Notice, in relation to airworthiness, thefollowing definitions apply:(a) Condition – the physical state of an item.30 May 2008 AN-3 P.2