🔖 ASD Definitions |
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This section is used to define key terms related to ASD aircraft maintenance. |
ASD Business Terms
Accessory | A part, subassembly or assembly designed for use in conjunction with or to supplement another assembly or unit. |
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Aeronautical product | Any aircraft, aircraft engine, aircraft propeller or aircraft appliance or part or the component parts of any of those things. |
Aircraft certifying authority | An authority to sign a maintenance release where the privileges apply to on aircraft work. |
Aircraft logs | Aircraft records that contain the maintenance history of the airplane. |
Aircraft Maintenance Engineer | Aircraft Maintenance Engineers are designated certified maintenance engineers. |
Aircraft repair | Restoration of an aircraft and/or its components to a condition of airworthiness after a failure, damage, or wear has occurred. |
Aircraft services service bulletin | An in-house document used to detail the installation, modification, |
Airworthiness directives | An instruction issued by the Minister or by a civil aviation authority responsible for an aeronautical product type design that mandates a maintenance or operation action to ensure that an |
Bonded stores | Any secure stores area where aeronautical products are held prior to installation on an aircraft, access is restricted and limited to authorized personnel only, it can include multiple secured locations outside a main bonded stores. |
Calibration | Testing the accuracy of a measuring instrument or scale by comparing it with a known standard. |
Check list | A systematic list of procedures to be followed when performing any complex operation. |
Class A Component | Units that are subject to an overhaul and retirement life. |
Class B Component | Units that are subject to either an overhaul or life limit. |
Commercial part | A part that is not specifically designed or produced for use as an aeronautical product, is made to a specification or catalogue description and marked under an identification scheme of the maker and whose failure does not adversely affect the continued safe flight, take-off and landing of the aircraft. Examples would include general electronic supplies. |
Compliance | To accomplish as required by regulation or directive. |
Component | Any material, part or subassembly used or intended to be used on an aeronautical product and includes modules. |
Correction | In respect to technical records, means a change at the time of the entry, for the sole purpose of correcting that entry. |
Defect | Any abnormal condition, which may require repair, replacement of a part, or could eventually result in a failure. The term “Snag” is also used to refer to defects. |
Designated functional manager (DFM) | A group of chiefs that have been designated by the Director Technical Services (person responsible for maintenance (PRM)) to have an authoritative responsibility regarding the approval of appropriate external or alternative training. DFM includes: associate Director Technical Services, Chief Aircraft Maintenance, Chief Aircraft Maintenance Avionics, Chief Maintenance Training and Chief Aircraft Maintenance QA (alternate). |
Engineering authority | In the context of MCM Procedure 40, means any person developing data for use in the maintenance of ASD aircraft and includes delegates of the Minister (e.g. Airworthiness Engineering Organization (AEO), Design Approval Representative (DAR), etc) or foreign equivalents, Person of Primary Responsibility (PPR) or Designated Responsibility Manager (DRM). |
Equipment list | A list of optional and required equipment installed on a particular aircraft that is not forming part of the aircraft type design. |
Heavy maintenance | Any check identified in MCM Section 6 - Maintenance Scheduling and tracking. This inspection is designated by the Chief Maintenance QA as requiring an Inspector. |
Inspection | An examination to verify conformity to an approved standard and may include a bench check. |
Licence number | Aircraft certifying authority (ACA), shop certifying authority (SCA) or limited certifying authority (LCA) number and aircraft maintenance engineer (AME) or pilot licence number as a unique identifier applicable to the individual making a technical record entry or certification. |
Limited certifying authority | An authority to sign for work performed, pursuant to MCM section 9 – Technical Records, up to, but not including a maintenance release as defined by CAR 571.10. |
Line maintenance | Maintenance of the specified aircraft types is limited to pre-flight, daily and weekly checks, and includes the rectification of aircraft defects, provided the maintenance is not specialized maintenance under the provisions of schedule II of subpart 571 of the CARs. A line maintenance limitation does not include any scheduled checks that include segmented portions of higher level checks. (CAR s573). |
Logbook | Book containing records of total operating time, any repairs, alterations or inspections performed, and all airworthiness directive notes complied with. |
Inspection | An examination to verify conformity to an approved standard and may include a bench check. |
Licence number | Aircraft certifying authority (ACA), shop certifying authority (SCA) or limited certifying authority (LCA) number and aircraft maintenance engineer (AME) or pilot licence number as a unique identifier applicable to the individual making a technical record entry or certification. |
Limited certifying authority | An authority to sign for work performed, pursuant to MCM section 9 – Technical Records, up to, but not including a maintenance release as defined by CAR 571.10. |
Line maintenance | Maintenance of the specified aircraft types is limited to pre-flight, daily and weekly checks, and includes the rectification of aircraft defects, provided the maintenance is not specialized maintenance under the provisions of schedule II of subpart 571 of the CARs. A line maintenance limitation does not include any scheduled checks that include segmented portions of higher level checks. (CAR s573). |
Logbook | Book containing records of total operating time, any repairs, alterations or inspections performed, and all airworthiness directive notes complied with. |
Maintenance | The overhaul, repair, required inspection or modification, or removal and installation of components of, an aeronautical product, but does not include elementary work or servicing. |
Maintenance control manual | Is a descriptive disclosure to Transport Canada, of the methods the air operator has chosen to achieve compliance with Canadian Aviation Regulations respecting aircraft maintenance. It requires Transport Canada Centre Airworthiness (TCCA) approval for amendments to the policies. |
Maintenance flight | Is a flight mandated by the Instructions for Continued Airworthiness (ICAs) as a necessary activity to complete the task. |
Maintenance program | A system used by an operator for the control and performance of all maintenance, both scheduled and unscheduled. A maintenance program must include an approved maintenance schedule for each type of aircraft included in the program. |
Maintenance release | A certification made following maintenance of an aeronautical product, indicating that the maintenance was performed in accordance with the applicable provisions of the CARs and the standards of airworthiness. This release includes the date the work was certified, authorized signature and authority number and company approval number, or the foreign equivalent. |
Major modification | An alteration to the type design of an aeronautical product which a type certificate has been issued that has other than a negligible effect on the weight and centre-of-gravity limits, structural strength, performance, power plant operation, flight characteristics or other qualities affecting its airworthiness or environmental characteristics. |
Major repair | A repair to an aeronautical product which a type certificate has been issued, that causes the aeronautical product to deviate from the type design defined by the type certificate, where the deviation from the type design has other than a negligible effect on the weight and centre-of-gravity limits, structural strength, performance, power plant operation, flight characteristics or other qualities affecting the aeronautical product’s airworthiness or environmental characteristics. |
Malfunction | The failure of a part or component to function or deviation in the operation of a unit from its intended purpose or design. |
Master minimum equipment list | A document approved by the Minister that establishes the essential aircraft equipment allowed to be inoperative under condition specified therein for a specific type of aircraft. (TP 9155). |
Minimum equipment list | A document approved by the Minister that authorizes an operator to dispatch a type of aircraft with essential aircraft equipment inoperative under the condition specified therein. |
Minor modification | A change to the type design of an aeronautical product which has negligible effect on the weight, balance, structural strength, reliability, performance, power plant operation, flight characteristics or other qualities which affect the airworthiness of the product. |
Mod proposal | An in-house document used to describe suggestions or ideas that may be used to improve aircraft services aircraft operation. The mod proposal can be submitted by any aircraft services employee and must be approved by the mod committee. Approved mod proposals will form the basis for an aircraft services service bulletin. |
Non-destructive testing | Methods of testing structures for integrity, especially absence of manufacturing flaws or cracks that do not impair serviceability or future life. |
Overhaul | A restoration process that includes the disassembly, inspection, repair or replacement of parts, re-assembly, adjustment, refinishing and testing of an aeronautical product, and ensures that the aeronautical product is in complete conformity with the service tolerances specified in the applicable instructions for continued |
Placard | A notice placed in or on the aircraft depicting pertinent information relating to the aircraft, its operation, particular component limitations, etc. |
Responsibility centre manager | An ASD position reporting directly or functionally to the PRM that has financial signing authority for Section 32 and 34 under the financial administrative act (RCM). |
Receiving report | The unique numbered file opened by the receiver, which contains the airworthiness documentation for the component or parts received into the ASD stores. |
Return to service | The compliance of all applicable maintenance records and forms after maintenance has been performed on an aircraft that will allow the aircraft to be flown legally. |
Rotable | An item that can be economically restored to a serviceable condition and in the normal course of operations, can be repeatedly rehabilitated to a fully serviceable condition over a period approximating the life of the flight equipment to which it is related. |
Routine line maintenance | Any routine check (excluding scheduled inspection), inspection and malfunction rectification performed end route and at base station during transit, turn-around or night stop. Refer to section 6 - Maintenance Programs, Paragraph 6.1 for additional restrictions. |
Scheduled maintenance | Any maintenance performed as part of a scheduled operations check. |
Serviceable | Equipment or parts that are in a condition which allows them to be returned to operational status on an aircraft (fit and safe for flight). |
Serviceability check | A visual inspection, requiring no disassembly, to determine the serviceability of the aircraft and its components. This inspection will be completed as per the applicable serviceability Check Sheet of the aircraft. |
Shelf life | Period of time a material may be stored and remain suitable for use. |
Shop certifying authority | An authority to sign a maintenance release where the privileges apply for work done in a shop on a removed component (off aircraft work). |
Signature | Within the context of the MCM a signature is an individual’s distinctive written name. When an individual has been issued an identifier stamp in accordance with MCM Procedure No. 3 – Certifying and Inspector |
Standard Part | A part manufactured in conformity with a specification that is established, published and maintained by an organization setting consensus standards or by a government agency and includes design, manufacturing, test and acceptance criteria and identification requirements. Standard parts do not include parts with a technical standard order (TSO). Examples would include AN, MS and NAS hardware. |
Technical Record | Any method used to keep the records required by this manual and includes, Journey Logs, technical logs, component record cards, computerized records, maintenance release tags, inspection Check Sheets, x-ray films and repair and modification conformity certificates. |
Unscheduled Maintenance | Maintenance performed as a results of discrepancies found by flight and ground personnel. |