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Appendix C — Criteria for Category A

ED Decision 2023/001/R

C27.1 General. A small multi-engine rotorcraft may not be type certificated for category A operation unless it meets the design installation and performance provisions contained in this appendix in addition to the provisions of this CS-27.

C27.2 Applicable CS-29 paragraphs. The following paragraphs of CS-29 must be met in addition to the requirements of this CS:

29.45(a) and (b)(2)

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General.

29.49(a)

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Performance at minimum operating speed.

29.51

—

Take-off data: General.

29.53

—

Take-off: Category A.

29.55

—

Take-off decision point: Category A.

29.59

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Take-off path: Category A.

29.60

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Elevated heliport take-off path: Category A.

29.61

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Take-off distance: Category A.

29.62

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Rejected take-off: Category A.

29.64

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Climb: General.

29.65(a)

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Climb: AEO.

29.67(a)

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Climb: OEI.

29.75

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Landing: General.

29.77

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Landing decision point: Category A.

29.79

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Landing: Category A.

29.81

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Landing distance (ground level sites): Category A.

29.85

—

Balked landing: Category A.

29.87(a)

—

Height-velocity envelope.

29.547(a) and (b)

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Main and tail rotor structure.

(29.571

—

Fatigue evaluation of structure.)

AC Material only: AC 29-2C Change 4 dated 1 May 2014, Paragraph AC29.571A.b(2).

29.861(a)

—

Fire protection of structure, controls and other parts.

29.901(c)

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Powerplant: Installation.

29.903(b), (c) and (e)

—

Engines.

29.908(a)

—

Cooling fans.

29.917(a), (b) and (c)(1)

—

Rotor drive system: Design. (29.917(a) replaces 27.917(d))

29.927(c)(1) and (c)(2)

—

Additional tests.

29.953(a)

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Fuel system independence.

29.1027(a)

—

Transmission and gearboxes: General.

29.1027(a)

—

Transmission and gearboxes: General.

29.1045(a)(1), (b), (c), (d) and (f)

—

Climb cooling test procedures.

29.1047(a)

—

Take-off cooling test procedures.

29.1181(a)

—

Designated fire zones: Regions included.

29.1187(e)

—

Drainage and ventilation of fire zones.

29.1189(c)

—

Shutoff means.

29.1191(a)(l)

—

Firewalls.

29.1193(e)

—

Cowling and engine compartment covering.

29.1195(a) and (d)

—

Fire extinguishing systems (one shot).

29.1197

—

Fire extinguishing agents.

29.1199

—

Extinguishing agent containers.

29.1201

—

Fire extinguishing system materials.

29.1305(a)(6) and (b)

—

Powerplant instruments.

29.1309(b)(1)

—

Equipment, systems and installations.

29.1323(c)(1)

—

Airspeed indicating system.

29.1331(b)

—

Instruments using a power supply.

29.1337(e)

—

Chip detection system

29.1351(d)(2)

—

Additional requirements for Category A rotorcraft

(Operation with the normal electrical power generating system inoperative.)

29.1585(h)

—

 Operating Procedures.

29.1587(a)

—

Performance information.

 

If certification with ditching provisions is requested by the applicant, the following requirements of CS-29 must also be met in addition to the ones of this CS:

29.801(c) and (g)  

—

Ditching.

29.803(c)

—

Emergency evacuation.

29.809(j)(2)

—

Emergency exit arrangement.

29.811(h)(1) 

—

Emergency exit marking.

29.1415(d)     

—

Ditching equipment.

 

If certification of an emergency flotation system alone is requested by the applicant, the following requirements of CS 29 must also be met in addition to the ones of this CS:

29.801(g)  

—

Ditching.

(See AC 29-2C Change 7 dated 4 February 2016 and AMC material to CS-29)

 

[Amdt No: 27/2]

[Amdt No: 27/4]

[Amdt No: 27/5]

[Amdt No: 27/6]

[Amdt No: 27/9]
Details
Source-Title: Appendix C -- Criteria for Category A View latest amendments
Erulesid: ERULES-1963177438-14251 Compare versions
Domain: Initial airworthiness
Amendedby: Amendment 10
Applicabilitydate: 8 February, 2023
Entryintoforcedate: 8 February, 2023
Regulatorysource: ED Decision 2023/001/R Navigate
Regulatorysubject: CS-27
Typeofcontent: CS (Certification specification)
Parentir: CS 27.1 Applicability
Origin: EASA
Category: EAR