The Civil Aviation (Approved Maintenance Organization) Regulations, 2025

11. Classes and ratings of the AMO

Edition: 2026-03-03 · In force

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11. Classes and ratings of the AMO

The following classes and ratings may be authorized to an AMO certificated under these Regulations—

(a)Class A — Aircraft maintenance where the following ratings defines the scope for aircraft maintenance—

(i)A1: Aeroplane above 5700 kilograms;

(ii)A2: Aeroplane 5700 kilograms and below;

(iii)A3: Helicopter;

(iv)A4: Other kind of aircraft including, Glider, Balloon, airship, and light sport aircraft;

(b)Class B — Engine maintenance where the following ratings defines the scope for engine maintenance—

(i)B1: Turbine engines;

(ii)B2: Piston engines;

(iii)B3: APU;

(c)Class C — component maintenance defined by referring to the Standard numbering system (SNS) code for identifying the aircraft system applicable to the rating as specified by the Authority;

(d)Class D — Specialized maintenance where the following ratings which are based on specific methods or techniques shall be used to further define the scope for specialized maintenance—

(i)D1: Non-destructive testing NDT;

(ii)D2: Welding;

(iii)D3: Composite material maintenance;

(iv)D4: Surface treatment (peening, plating, painting, etc.).

(v)D5: Other — unique processes accepted/approved by the Authority.

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Source: Kenya Law