The 18 most common aircraft in the piston group can divided into smaller groups:
The Single Engine Piston group:
- Wake turbulence category: Light
- Max operating level: FL 100
- Typical cruising speed: 110 kt
- Rate of climb: Poor
- Approach category: A
The Multi Engine Piston group:
- Wake turbulence category: Light
- Max operating level: FL 100
- Typical cruising speed: 170 kt
- Rate of climb: Poor
- Approach category: A (B)
The Single Engine Turboprop group:
- Wake turbulence category: Light
- Max operating level: FL 100
- Typical cruising speed: 170 kt
- Rate of climb: Poor
- Approach category: A (B)
The Multi Engine Turboprop group:
- Wake turbulence category: Medium
- Max operating level: FL 250
- Typical cruising speed: 250 kt
- Rate of climb: Medium
- Approach category: B
Multi Engine Turboprop – Special Performance:
- Wake turbulence category: Light, Medium
- Max operating level: FL 250 – 330
- Typical cruising speed: 250 – 330 kt
- Rate of climb: Medium – Good
- Approach category: B (C)