ED Decision 2018/015/R
1. The AMC to CS-27 consists of FAA AC 27-1B Change 7, dated 4 February 2016, with the changes/additions given in this Book 2 of CS-27.
2. The primary reference for each of these AMCs is the CS-27 paragraph. Where there is an appropriate paragraph in FAA AC 27-1B Change 7, dated 4 February 2016, this is added as a secondary reference.
[Amdt No: 27/2]
[Amdt No: 27/4]
[Amdt No: 27/6]
ED Decision 2016/024/R
(a) These certification specifications are applicable to small rotorcraft with maximum weights of 3 175 kg (7 000 lbs) or less and nine or less passenger seats.
(b) reserved
(c) Multi-engine rotorcraft may be type certificated as Category A provided the requirements referenced in Appendix C are met.
[Amdt 27/4]
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) |
— |
General. |
|
29.49(a) |
— |
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 |
— |
Take-off path: Category A. |
|
29.60 |
— |
Elevated heliport take-off path: Category A. |
|
29.61 |
— |
Take-off distance: Category A. |
|
29.62 |
— |
Rejected take-off: Category A. |
|
29.64 |
— |
Climb: General. |
|
29.65(a) |
— |
Climb: AEO. |
|
29.67(a) |
— |
Climb: OEI. |
|
29.75 |
— |
Landing: General. |
|
29.77 |
— |
Landing decision point: Category A. |
|
29.79 |
— |
Landing: Category A. |
|
29.81 |
— |
Landing distance (ground level sites): Category A. |
|
29.85 |
— |
Balked landing: Category A. |
|
29.87(a) |
— |
Height-velocity envelope. |
|
29.547(a) and (b) |
— |
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) |
— |
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) |
— |
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]
CS 27.2 Special Retroactive Requirements
ED Decision 2012/021/R
(a) reserved
(b) For rotorcraft with a certification basis established prior to 1 May 2001
(1) The maximum passenger seat capacity may be increased to eight or nine provided compliance is shown with all the airworthiness requirements in effect from the initial issue of CS-27.
(2) The maximum weight may be increased to greater than 2 722 kg (6 000 lbs) provided -
(i) The number of passenger seats is not increased above the maximum number previously certificated; or
(ii) Compliance is shown with all of the airworthiness requirements in effect from the issue of CS-27.
[Amdt 27/3]