All aircraft

OSD

Major stand-alone change to any OSD constituent

1

Products for which an alternative procedure may be accepted according to 21.A.14(b)

All disciplines

2

CS-23 (products where a Subpart J DOA is required for TC)

Notes:

1) An STC which leads to a reassessment of the loads on large parts of the primary structure should be in Group 1.

2) ‘2/1’ means that an assessment of consequences in terms of handling qualities, performance or complexity of demonstration of compliance may lead to classification in Group 1.

Aircraft

Conversion to tail wheel configuration

1

Auxiliary fuel tank installations

2/1

Glass fibre wing tips

2/1

Fairings: nacelle, landing gear

2

Gap seals: aileron, flap, empennage, doors

2

Vortex generators

2/1

Spoiler installation

1

Increase in MTOW

1

Structures

Stretcher installation

2

Change to seating configuration

2

Windshield replacement (heated, single piece, etc.)

2

Lightweight floor panels

2

Ski installations

2/1

Propulsion

Engine model change

1

Fixed pitch propeller installation

2

Constant speed propeller installation

2/1

Installation of exhaust silencer

2

Installation of graphic engine monitor

2

Installation of fuel flow meter

2

Accessory replacement (alternator, magnetos, etc.)

2

Inlet modifications: oil cooler; induction air

2

Equipment

Avionics upgrades (EFIS, GPS, etc.)

2/1

Engine instrument replacements

2

Carburettor ice detection system

2

Autopilot system installation

1

Wing tip landing light; recognition lights

2

WX radar installation

2

Aeromedical system installations

2

De-icing and anti-icing system installations

1

Emergency power supply installations

2

CS-25

Cabin Safety

Note:

Basically, all changes related to cabin configuration should be in Group 2.

Cabin layout (installation of seats (16G), galleys, single class or business / economy class, etc.)

2

Floor path marking

2

Crew rest compartment

1

Change of cargo compartment classification (from class D to class C)

1

Structure

Note:

An STC which leads to a reassessment of the loads on large parts of the primary structure should be in Group 1.

Cargo door

1

Change from passenger to freighter configuration

1

Avionics

Notes:

For CS-25 products, the existence of an ETSO is not taken into account for the classification.

The impact on aircraft performance, and influence of aircraft performance are criteria to assess the classification.

Subjective assessment of human factors is considered for determination of the classification.

CVR

2

VHF

2

NAV (ADF, VOR, GPS, BRNAV)

2

Autopilot, HUD, EFIS, FMS

1

DFDR

2/1

Meteo radar

2

ILS Cat 3

1

RVSM

1

TCAS, EGPWS

1

GPWS

2

Powerplant

Auxiliary fuel tanks

1

Thrust reverser system

1

Hushkit

1

Fire detection

1

Fuel gauging

1

Change of engine or propeller

1

CS-27 or CS-29

All disciplines

Note:

2/1 means that an assessment of consequences in terms of handling qualities and performance may lead to classification in Group 1.

Replacement of main rotor or tail rotor blades

1

Autopilot

1

Engine type change

1

GPS installation

2

Jettisonable overhead raft installation

2

Utility basket installation

2/1

Nose or side mount camera installation

2/1

Passenger access step installation

2/1

Protection net & handle installation (parachuting)

2

VIP cabin layout

2

Navigation system installation

2

Fuel boost pump automatic switch-on installation

2

Decrease of maximum seating capacity

2

Agricultural spray kit installation

2/1

Long exhaust pipe installation

2

Flotation gear installation

2/1

Wipers installation

2

Engine oil filter installation

2

Skid gear covering installation

2/1

Gutter installation (top pilot door)

2

Cable cutter installation

2

Auxiliary fuel tank fixed parts installation

2

Cabin doors windows replacement

2

Radio altimeter aural warning installation

2

Standby horizon autonomous power supply

2

Fire attack system

2/1

Hoisting system installation

2/1

External loads hook installation

2

Emergency flotation gear installation

2/1

Heating/demisting (P2 supply)

2