Chapter 3. Delegate Authorization


3.3  DAR Functional Specialties

When an application for delegation as a DAR is found to be satisfactory, TCCA will issue a letter of authorization and an delegation of authority certificate which may be displayed in a prominent location at the DAR's normal place of business. The letter of authorization will be issued to authorize the delegation, indicate the effective date, and approve the EPM which defines the scope and limitations of the delegation.

The following functional specialties are specific to DAR's. Other functional specialties may be specified by TCCA when issuing approval numbers, approving compliance programs, or Engineering Procedures Manuals.

DAR (General)  For reciprocating engine-powered fixed wing aircraft, 12,500 pounds gross weight or less, unpressurized, may be delegated the authority to approve engineering reports, drawings and data relating to the structures, powerplants, systems and equipment. The general descriptions outlined above for DAR Structures, Powerplants (except engines and propellers) and Systems and Equipment apply. Specific additional delegation is required for approvals on Transport Category and pressurized aircraft or where other specialist knowledge is deemed essential to the approval.

DAR (Structures)  May be delegated the authority to approve structural (including dynamics and aeroelastics) engineering reports, drawings, drawing lists, data relating to strength, materials and processes used and other related structural applications. The following items are normally retained for TCCA approval, unless specifically delegated: basic loads analysis, test programs, Airframe fatigue and damage tolerance, discrete source damage, and loads predicted by aerodynamic analysis (however, loads whose magnitude is defined in the airworthiness requirements, such as emergency landing inertia loads, control system pilot effort applied loads and any other loads so defined in the requirements may be considered delegated).

DAR (Powerplants)  Due to the wide range and complexity of the components, systems and accessories involved in "powerplant", sub-categories of powerplant are listed. The following items are normally retained for TCCA approval, unless specifically delegated: engine or propeller type test programs, engine or powerplant icing test programs, engine mounts, items such as installed engine power calculations which require joint flight analyst and powerplant approval.

Powerplant Installation  May be delegated the authority to approve engineering reports, drawings and data relating to durability, materials and processes employed in the powerplant installations, including all systems and equipment necessary for the proper operation of the powerplant.

Powerplant Engine  May be delegated the authority to approve engineering reports, drawings and data relating to durability, materials and processes employed in engine design, operation and maintenance.

Powerplant Propeller  May be delegated the authority to approve engineering reports, drawings and data relating to durability, materials and processes employed in propeller design, operation and maintenance.

DAR (System and Equipment)  May be delegated the authority to approve engineering reports, drawings and data relating to aircraft mechanical and hydraulic and other systems and avionics electrical systems and equipment (including any aspect not identified by other specialties). System and Equipment can be sub-divided in three (3) specialized areas as below: DAR System and Equipment - (Mechanical), DAR System and Equipment - (Electrical), and DAR System and Equipment - (Avionics). Review and approval of analysis of fault conditions in critical systems are not normally delegated.

DAR (Flight Test)  Has two subdivisions namely Flight Test Pilot and Flight Test Analyst, where Flight Test Analyst is further subdivided as identified below.

DAR Flight Test Pilot  The Test Pilot DAR may find compliance with any requirement or standard, or applicable part of any requirement or standard, requiring the subjective assessment of:

  1. level of pilot skill;
  2. consistent operation;
  3. ease of operation;
  4. crew procedure;
  5. crew workload;
  6. inadvertent operation;
  7. continued safe flight and landing; and,
  8. any other aspect requiring pilot judgment.

The delegate is responsible for the proper conduct of all the flight tests necessary to make the required findings of compliance.

In addition, the delegate may evaluate and recommend approval of procedures included in the Aircraft Flight Manual, however, overall responsibility for AFM approvals is retained by TCCA.

DAR Flight Test Flight Analyst - Performance  The Flight Analyst - Performance DAR may find compliance with the applicable Flight requirements and any other applicable requirements dealing with aircraft performance. The delegate is responsible for ensuring that adequate and sufficient flight tests are completed and for the proper review and analysis of flight test data to make these findings of compliance.

The delegate may recommend approval of Airplane Flight Manual Performance data but overall responsibility for AFM approvals is retained by TCCA.

DAR Flight Test Flight Analyst - Flight Characteristics  The Flight Analyst - Flight Characteristics DAR may find compliance with the applicable Flight requirements and any other applicable requirements dealing with quantitative aspects of aircraft flight characteristics, including assessment of the effects of failure. Qualitative aspects are the responsibility of the test pilot. The delegate is responsible for ensuring that adequate and sufficient flight tests are completed and for the proper review and analysis of flight test and simulation data to make these findings of compliance.

DAR Flight Test Flight Analyst - Systems Performance  The Flight Analyst - Systems Performance DAR may find compliance with the applicable system performance requirements for navigation and automatic flight control systems. The delegate is responsible for ensuring that adequate and sufficient flight tests are completed and for the proper review and analysis of flight test and simulation data to make these findings of compliance.

DAR Flight Test Flight Analyst - Aircraft Flight Manuals (AFM)  The Flight Analyst - Aircraft Flight Manuals DAR may approve eligible AFM revisions as follows:

  • The addition of aircraft serial numbers to an existing AFM where the aircraft configuration, as related to the AFM is identical to aircraft already in that AFM;
     
  • Changes to weight limitations that are within all limitations previously approved by TCCA (e.g., structural, noise, etc.);
     
  • The addition of compatible and previously TCCA approved AFM supplements (e.g., adding a Supplement to the AFM for a particular serial number aircraft);
     
  • Conversions of previously TCCA approved combinations of units of measure added to AFM in a manner previously approved by TCCA;
     
  • Minor editorial changes and/or corrections; and,
     
  • The addition of previously TCCA approved optional equipment for the same aircraft model with similar operability and compatibility characteristics provided that no additional compatibility flight testing is required.

New information of any kind, or any information not previously approved by TCCA, including limitations, operating procedures, and performance, are not eligible for delegate approval.

Other types of AFM revisions not eligible for delegate approval include:

  • Any information that requires certification flight tests;
     
  • Any revision where approval or signature authority is affected by existing bilateral agreements and procedural practices;
     
  • Revisions associated with concurrent Type Approval activity;
     
  • Changing units of measure incompatible with aircraft configuration (e.g., fuel quantity/flow gauges); and,
     
  • Any revisions not clearly identified above as eligible for delegated approval.
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