# TCDS E00054EN: Safran Helicopter Engines S.A.

- Type: Type certificate data sheet
- Status: Current
- Holder: Safran Helicopter Engines S.A.
- Revision: 11
- Revised: November 23, 2021
- Product: Engine
- Certification basis: Part 21, Part 33
- Registered aircraft: 1,049, by the registry models matched to it (OpenAirDocs)
- Data sheet PDF: https://openairdocs.org/files/sha256/c0/42/c042edd1a4f68e777326af9d0424d6c437ad5abf06e2d0cac63f6bd000cc90ba
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/3B4C88ABAB4A36C38625879D005B56BC.0001
- Page: https://openairdocs.org/tcds/E00054EN

## Models (9)

As the data sheet lists them.

- Arriel 2C1
- Arriel 2C
- Arriel 2E
- Arriel 2D
- Arriel 2B
- Arriel 2S1
- Arriel 2B1
- Arriel 2C2
- Arriel 2S2

## What the data sheet says

From the PDF's text layer, line by line; tables lose their columns. The PDF is the record.

```text
1 I I I I I I I I I I I I I I 
U.S. DEPARTMENT OF TRANSPORTATION 
FEDERAL AVIATION ADMINISTRATION 
TYPE CERTIFICATE DATA SHEET NO. E00054EN 
TCDS NUMBER E00054EN 
REVISION: 11 
DATE: November 23, 2021 
Safran Helicopter Engines, S.A. 
MODELS: 
ARRIEL 2S1 ARRIEL 2S2 
ARRIEL 2B ARRIEL 2B1 
ARRIEL 2C   ARRIEL 2C1 ARRIEL 2C2 
ARRIEL 2D ARRIEL 2E 
Engines of models described herein conforming with this data sheet (which is part of Type Certificate Number E00054EN) and 
other approved data on file with the Federal Aviation Administration, meet the minimum standards for use in certificated aircraft 
in accordance with pertinent aircraft data sheets and applicable portions of the Federal Aviation Regulations, provided they are 
installed, operated, and maintained as prescribed by the approved manufacturer's manuals and other approved instructions. 
TYPE CERTIFICATE (TC) HOLDER Safran Helicopter Engines, S.A. 
(formerly Turbomeca, S.A.) 
64511 Bordes - Cedex 
France 
I. MODELS ARRIEL 2S1, 2S2, 2B, 2B1, 2C, 2C1, 2C2, 2D, 2E 
TYPE: Turboshaft engine consisting of an axial air intake, an axial compressor and a centrifugal compressor 
driven by a single stage turbine, a combustion chamber, and a single stage power turbine driving a 
reduction gearbox located at the rear. An accessory drive gearbox, driven by the gas generator, is 
located at the front. 
RATINGS: 
SHP (KW) (See Note 8) ARRIEL 2S1 ARRIEL 2S2 ARRIEL 2B ARRIEL 2B1 
30 second OEI 985 (735) 1048 (771) --- ---
2 minute OEI 889 (663) 950 (699) --- ---
Continuous OEI 857 (639) 896 (659) --- ---
Takeoff (5 minutes) 817 (601) - - 747 (557) - -
Maximum continuous 794 (592) 817 (601) 728 (543) - -
30-minute (See NOTE 23) 817 (601) - - --- ---
ARRIEL 2C ARRIEL 2C1 ARRIEL ARRIEL 2D ARRIEL 2E 
2C2 
30 second OEI 944 (704) 962 (718) 1006 (750) --- 800 (753) 
2 minute OEI 851 (635) 865 (646) 956 (713) --- 775 (630) 
Continuous OEI 818 (610) 838 (616) 858 (640) --- 710 (490) 
Takeoff (5 minutes) 722 (531) 790 (581) 821 (612) 802 ( 598) 667 (445) 
Maximum continuous 722 (531) - - 821 (612) 802 ( 598) 575 (360) 
30-minute (See NOTE 23) --- --- 821 (612) 802 (598) 667 (445) 
FUEL/OIL/ADDITIVES: REFER TO INSTALLATION MANUAL 
PRINCIPAL DIMENSIONS: 
INCHES (M) 
Length 
Width 
Height 
ARRIEL 2S1 ARRIEL 2S2 ARRIEL 2B ARRIEL 2B1 
60.6 (1.539) 
19.8 (0.504) 
28.1 (0.715) 
60.6 (1.539) 
19.6 (0.497) 
28.1 (0.715) 
46.5 (1.181) 
19.6 (0.498) 
24.3 (0.616) 
44.88 (1.140) 
19.33 (0.491) 
24.25 (0.616) 
* 
PAGE 1 2 3 4 5 6 7 8 9 10 11 12 
REV. 11 11 11 9 11 9 11 9 9 9 9 11 
LEGEND:  "- -" INDICATES "SAME AS PRECEDING MODEL" 
"---" INDICATES "DOES NOT APPLY" 
NOTICE:    SIGNIFICANT CHANGES ARE BLACK-LINED IN THE LEFT MARGIN

TCDS E00054EN Page 2 of 12 
PRINCIPAL DIMENSIONS: (continued) 
INCHES (M) ARRIEL 2C 
Length 46.5 (1.181) 
Width 19.6 (0.498) 
Height 24.25 (0.616) 
ARRIEL 2C1 ARRIEL 2C2 ARRIEL 2D ARRIEL 2E 
39.9 (1.015) 
19.6 (0.498) 
22.6 (0.576) 
39.9 (1.015) 
19.6 (0.498) 
22.6 (0.576) 
46.34 (1.177) 
19.68 (0.500) 
24.25 (0.616) 
46.54 (1.182) 
19.99 (0.508) 
24.25 (0.616) 
CENTER OF GRAVITY: REFER TO INSTALLATION MANUAL 
MAXIMUM DRY WEIGHT: Refer to engine manual for definition of dry weight 
LBS. (KG) ARRIEL 2S1 ARRIEL 2S2 ARRIEL 2B ARRIEL 2B1 
289 (131.2) 289 (131) 295 (134.0) 291.5 (132.2) 
ARRIEL 2C ARRIEL 2C1 ARRIEL 2C2 ARRIEL 2D ARRIEL 2E 
289 (131.0) 285 (129.2) 290 (131.5) 293 (132.9) 307 (139.2) 
DRIVE SHAFT TYPE: REFER TO INSTALLATION MANUAL 
IGNITION: Low tension, high energy system, including: 
1 high-energy (H.E.) ignition unit 
2 ignition cables 
2 igniter plugs 
STARTING: 
CERTIFICATION BASIS: 
The automatic starting sequence is ensured by the Engine Electronic Control Unit.  For detail, see 
Installation Manual. 
Title 14 of the Code of Federal Regulations Section 21.29 and Part 33, Amendments 33-1 through 33-
14; and for Arriel 2S1 and Arriel 2C Special Condition No. SC-33-ANE-05 published on April 15, 
1996. For Arriel 2C2 and Arriel 2S2, Part 33, Amendments 1 through 14, § 33.28, Amendment 15, 
Special Conditions 33-ANE-05 and 33-001-SC published June 19, 1998. For Arriel 2D and 2E , Part 
33, Amendments 33-1 through 33-15 and Special Condition No. 33-009-SC, published May 27, 2011. 
MODEL APPLICATION TYPE CERTIFICATE TYPE CERTIFICATE 
DATE ISSUED / AMENDED CANCELLED 
ARRIEL 2S1 02/25/94 06/10/96 
ARRIEL 2B 04/28/97 05/06/98 
ARRIEL 2C 04/28/97 05/06/98 
ARRIEL 2C1 11/27/97 09/24/99 
ARRIEL 2B1 12/13/98 12/1/00 
ARRIEL 2C2 09/12/99 01/10/03 
ARRIEL 2S2 03/9/04 12/13/05 
ARRIEL 2D 8/26/10 07/12/11 
ARRIEL 2E 03/04/13 05/14/14 
The aviation authority for France, the Direction Generale de L'Aviation Civile (DGAC), originally 
type certificated this engine. The FAA validated this product under U.S. Type Certificate Number 
E00054EN. Effective September 28, 2003, the European Aviation Safety Agency (EASA) began 
oversight of this product on behalf of France. 
PRODUCTION BASIS: ARRIEL 2S1, 2S2 and 2E: Production Certificate Number 5SW. Produced by Safran Helicopter 
Engines USA (formerly Turbomeca USA) in the United States under license agreement from Safran 
Helicopter Engines S.A., France. 
ARRIEL 2S1, 2S2 and 2E: Engine modules, and parts thereof, produced by Safran Helicopter 
Engines S.A., France, conforming to this type certificate are fully interchangeable with ARRIEL 2S1, 
2S2 and 2E engine modules, and parts thereof, produced under Production Certificate Number 5SW. 
Engines manufactured under Production Certificate Number 5SW shall have the suffix "TEC" added 
to the engine serial number and shall be included in the required identification data as specified by 
14CFR Section 45.

TCDS E00054EN Page 3 of 12 
IMPORT To be considered eligible for installation on U.S. registered aircraft, each new engine to be exported 
REQUIREMENTS: to the United States with the DGAC or EASA airworthiness approval shall have a Joint Aviation 
Authorities (JAA) or EASA Form 1, Authorized Release Certificate. The JAA or EASA Form 1 
should state that the engine conforms to the type design approved under the U.S. Type Certificate 
E00054EN is in a condition for safe operation and has undergone a final operational check. 
Refer to the applicable bilateral agreement to verify eligibility for import into the United 
States of both new and used aircraft based on the scope of the agreement, to identify any 
required statements by the exporting authority on the export certificate of airworthiness (or 
equivalent document) , and for procedures for coordinating exceptions to conformity 
statements on these documents. Refer to FAA Order 8130.2, Airworthiness Certification of 
Aircraft, for requirements for issuance of an airworthiness certificate for imported aircraft.

TCDS E00054EN Page 4 of 12 
NOTES 
NOTE  1. MAXIMUM PERMISSIBLE ENGINE SPEEDS / RPM 
30 second OEI rating 
2 minute OEI rating 
Continuous OEI rating 
Takeoff rating 
Maximum continuous rating 
30-minute rating 
Maximum inadvertent over 
speed (<20 sec) 
** all engines operating 
30 second OEI rating 
2 minute OEI rating 
Continuous OEI rating 
Takeoff rating 
Maximum continuous rating 
30-minute rating 
Maximum inadvertent over 
speed (<20 sec) 
** all engines operating 
Minimum stabilized power on 
Minimum stabilized power off 
Minimum transient (<20 sec) 
Maximum inadvertent 
overspeed (<20 sec) power on 
Maximum inadvertent 
overspeed (<20 sec) power 
off 
Maximum stabilized 
Minimum stabilized power on 
Minimum stabilized power off 
Minimum transient (<20 sec) 
Maximum inadvertent 
overspeed (<20 sec) power on 
Maximum inadvertent 
overspeed (<20 sec) power 
off 
Maximum stabilized 
A.  GAS GENERATOR SPEED (N1) 
ARRIEL 2S1 ARRIEL 2S2 ARRIEL 2B ARRIEL 2B1 
55156 
53386 
52756 
52756 
51616 
52756 
53312 ** 
55178 
53348 
52776 
53089 
51959 
53089 
53661 ** 
---
---
---
52756 
50672 
---
53312 
---
---
---
- -
- -
---
- -
ARRIEL 2C ARRIEL 2C1 ARRIEL 2C2 ARRIEL 2D ARRIEL 2E 
55051 
53192 
52571 
52660 
51520 
---
53312 
54986 
53126 
52506 
52776 
51637 
---
- -
55265 
53275 
52764 
53079 
51922 
53079 
- -
---
---
---
53086 
52050 
53086 
53568 
55186 
54480 
53102 
52518 
51572 
52518 
53102 ** 
For variation of these limits with outside air temperature (OAT), refer to Installation Manual. 
For required action if limits are exceeded, refer to Maintenance Manual. 
100% = 52,110 rpm 
B. POWER SHAFT SPEED (N2) 
ARRIEL 2S1 ARRIEL 2S2 ARRIEL 2B ARRIEL 2B1 
35381 
35381 
26584 
42613 
47305 
42418 
- -
- -
- -
43719 
- -
- -
- -
33230 
- -
42613 
- -
- -
- -
- -
- -
- -
- -
- -
ARRIEL 2C ARRIEL 2C1 ARRIEL 2C2 ARRIEL 2D ARRIEL 2E 
35381 
33230 
26584 
42613 
47305 
42418 
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
35437 
33284 
26627 
- -
46598 
42477 
- -
- -
- -
46598 
- -
42418 
If limits are exceeded, refer to Maintenance Manual. 
100% N2 = 39,095 rpm for all Models except Arriel 2D and 2E 
100% N2 = 39,158 rpm for Arriel 2D and 2E

TCDS E00054EN Page 5 of 12 
NOTE  2. MAXIMUM PERMISSIBLE TEMPERATURE 
30 second OEI rating 
2 minute OEI rating 
Continuous OEI rating 
Takeoff rating 
30 minute rating 
Max. continuous rating 
Starting (<10 seconds) 
Starting (unlimited) 
Maximum inadvertent 
Overtemperature (<20 sec) 
A.  EXHAUST GAS T45, Measured with 8 thermocouples on gas generator turbine diffuser 
(Degrees °C) 
ARRIEL 2S1 ARRIEL 2S2 ARRIEL 2B ARRIEL 2B1 
1000 
941 
912 
912 
912 
877 
865 
750 
---
996 
944 
926 
930 
930 
893 
840 
- -
---
---
---
---
915 
---
849 
865 
- -
941 
---
---
---
- -
---
- -
- -
- -
- -
30 second OEI rating 
2 minute OEI rating 
Continuous OEI rating 
Takeoff rating 
30 minute rating 
Max. continuous rating 
Starting (<10 seconds) 
Starting (unlimited) 
Maximum inadvertent 
overtemperature (<20 sec) 
**All engines operating 
A.  EXHAUST GAS T45, Measured with 8 thermocouples on gas generator turbine diffuser 
(Degrees °C) 
ARRIEL 2C ARRIEL 2C1 ARRIEL 2C2 ARRIEL 2D ARRIEL 2E 
1000 
941 
912 
912 
---
877 
865 
750 
---
- -
- -
- -
- -
---
- -
- -
- -
---
996 
944 
926 
929 
929 
891 
840 
- -
---
---
---
---
962 
962 
918 
- -
- -
994 
1035 
1016 
974 
947 
947 
930 
840 
760 
974** 
If limits are exceeded, refer to Maintenance Manual for required action.

TCDS E00054EN Page 6 of 12 
NOTE  2. (continued) 
B. OIL, Measured at engine inlet 
Minimum oil temperature -30oC for oil with a kinematic viscosity 
for engine starting: of 5.4 x 10-5 ft2/sec. 
-45 oC for oil with a kinematic viscosity 
of 3.2 to 4.2 x 10-5 ft2/sec for 2B and 2B1. 
-50oC for oil with a kinematic viscosity 
of 3.2 to 4.2 x 10-5 ft2/sec for all other models. 
Minimum oil temperature for power-up: 0oC for oil with a kinematic viscosity 
of 5.4 x 10-5 ft2/sec. 
-10oC for oil with a kinematic viscosity 
of 3.2 to 4.2 x 10 -5 ft2/sec. 
Maximum oil temperature for all Models except Arriel 2D and 2E: 115oC 
Maximum oil temperature for Arriel 2D and 2E 
(measured at a different location from other Models) 117 oC 
C.  FUEL, Measured at engine inlet 
1. Maximum temperature: REFER TO INSTALLATION MANUAL 
2. Minimum temperature: REFER TO INSTALLATION MANUAL 
3. For 2S1, 2B, 2B1, 2C , 2C1, 2D and 2E: Use of anti-icing additive for fuel temperature <-20°C 
For 2C2 and 2S2: Use of anti -icing additive for fuel temperature <-30°C 
4. Starting: REFER TO INSTALLATION MANUAL

TCDS E00054EN Page 7 of 12 
NOTE 3 POWER TURBINE UNIT TORQUE LIMITS / FOOT - POUND (daNm) 
30 second OEI rating 
2 minute OEI rating 
Continuous OEI rating 
Takeoff 
Maximum continuous 
Max. inadvertent over-torque ( 
< 20 sec) 
30-minute rating 
30 second OEI rating 
2 minute OEI rating 
Continuous OEI rating 
Takeoff 
Maximum continuous 
Max. inadvertent over-torque 
(< 20 sec) 
30-minute rating 
ARRIEL 2S1 ARRIEL 2S2 ARRIEL 2B ARRIEL 2B1 
887 (120.3) - - --- ---
835 (113.2) - - --- ---
756 (102.5) - - --- ---
682 (92.5) - - 673 (91.3) - -
682 (92.5) - -
- -
673 (91.3) 
975 (132.2) 
- -
- -
1055 (143) 
682 (92.5) - - --- ---
ARRIEL 2C ARRIEL 2C1 ARRIEL 2C2 ARRIEL 2D ARRIEL 
2E 
861 (116.8) 875 (118.7) 880 (119.3) --- 883(119.8) 
791 (107.3) 796 (107.9) 856 (116.0) --- 740(100.3) 
760 (103) 749 (101.55) 751 (101.8) --- 575(78.0) 
682 (92.5) - - 718 (97.3) 708 (96.0) 522(70.8) 
682 (92.5) - - 718 (97.3) 708 (96.0) 423(57.3) 
- - - - 975 (132.2) 989 (134.2) 856(116) 
718 (97.3) 708 (96.0) 522(70.8) 
NOTE  4. FUEL AND OIL PRESSURE LIMITS 
A. FUEL PRESSURE, at engine inlet 
A. Minimum fuel pressure 
1. Normal operation, excluding starting phase, the minimum (absolute) pressure is defined for all models 
except Arriel2D and 2E, by the highest of the following conditions: 
2.9 PSIA (20kPa) 
35% of atmospheric pressure, 
1 PSI (7 kPa) above the vapor pressure of the fuel used, 
Fuel pressure corresponding to a vapor volume over Liquid volume ratio of 0.30 
For Arriel 2D and 2E: Refer to Installation / Operating Manual 
2. During the starting phase or at relight, fuel pressure (relative) must not be less than: 
+3.6 PSIG (25 kPa) for the 2S1 
+2.9 PSIG (20 kPa) for the 2S2 
+3.6 PSIG (25 kPa) for the 2B, 2B1, 2C, 2C1, 2C2, 2D and 2E. 
B. Maximum fuel pressure: 
Less than or equal to 21.8 PSIG (150 kPa) (relative pressure) in all operating phases, for all Models 
except Arriel 2D and 2E. 
Less than or equal to 26.1 PSIG (180kPa) (relative pressure), in all operating phases, for Arriel 2D and 
2E. 
B. OIL PRESSURE, 
1. Minimum Oil Pressure (relative): 
For 2S1, 2B, 2B1, 2C and 2C1:  16.0 PSIG (110 kPa) 
For 2C2 and 2S2: 24.7 PSIG (170 kPa) 
For 2D and 2E: Refer to Installation / Operating Manual 
2. Maximum Oil Pressure (relative): 
For 2S1, 2S2, 2B, 2B1, 2C, 2C1 and 2C2: 87.0 PSIG (600 kPa) 
For 2D and 2E: Refer to Installation / Operating Manual

TCDS E00054EN Page 8 of 12 
NOTE  5. MAXIMUM PERMISSIBLE AIR BLEED FROM CENTRIFUGAL COMPRESSOR PLENUM 
Maximum air mass flow at Takeoff and Max. Continuous: 0.22 lb/sec for all Models except Arriel 
2D and 2E 
Maximum air mass flow at Takeoff, Max. Continuous and 30-minutes rating:  0.33 lb/sec for Arriel 
2D and 2E 
Power loss due to air bleed: For further details, see Installation and Operating Manual. 
NOTE  6. AIR INTAKE REQUIREMENTS 
The ARRIEL engines have not been tested to evaluate the effects of foreign object ingestion other 
than rain water. Foreign object ingestion characteristics of airframe air inlet and engine combination 
are to be evaluated prior to approval of the engine installation, for all remaining foreign objects. 
The ARRIEL engines do not have anti-icing provisions and have not been tested to evaluate the 
effects of icing conditions. Anti -icing characteristics of airframe, air inlet, and engine combination 
are to be evaluated prior to approval of the engine installation. 
The ARRIEL 2S1 engine meets the requirements of § 33.68(a) and (b) when installed with Sikorsky 
S76C+ helicopter air intake assembly Part Number (P/N) 76300-07761-101. 
The helicopter air intake design shall be such as to prevent instantaneous ingestion of ice, snow and 
water in excess of maximum quantities defined in the Installation and Operating Manual. 
A protective grid, as defined in the Installation and Operating Manual shall be installed to limit the 
ingestion of foreign matter in the engine. 
The Arriel 2B, 2B1 and 2D are not approved for operation in icing conditions with Eurocopter AS 
350 B3 / EC 130 sand filter P/N 704 A 41 650 010. 
The ARRIEL 2S2 engine meets the requirements of § 33.68(a) and (b) when installed with Sikorsky 
S76C++ helicopter air intake assembly P/N 041277880, barrier filter P/N 76302- 07800, inlet 
bellmouth P/N 76304-07009-049 and heated duct P/N 0401277880. 
The Arriel 2B and 2D engines meet the requirements of § 33.68(a) and (b) when installed with 
Eurocopter AS 350 B3 helicopter air intake P/N 350.A.54.1080.04 and protection screen P/N 
350.A.58.1607.03.  The engines are not approved for operation in icing conditions with Eurocopter 
AS 350 B3 sand filter P/N 704.A.41.650.010. 
The Arriel 2B1 and 2D engines meet the requirements of § 33.68(a) and (b) when installed with 
Eurocopter EC 130 helicopter air intake P/N 350.A.54.1080.04 and protection screen 
350.A.58.1607.03.  The engines are not approved for operation in icing conditions with Eurocopter 
EC 130 sand filter P/N 704.A.41.650.010. 
The Arriel 2C and 2C1 engines meet the requirements of § 33.68(a)(b) when installed with 
Eurocopter AS 365 N3 helicopter air intake ducts consisting of P/N 365.A.24.0110.04/05 (MGB 
section, left/right sides respectively) and P/N 365.A.54.5022.01 (engine compartment section, both 
sides), along with protection screen P/N 365.A.24.1067.02/03 (left/right sides respectively). 
The Arriel 2E engines meet the requirements of § 33.68(a) and (b) when installed with the following 
Aircraft air intake and inlet Part Numbers (P/N): 
- Intake protection outer LH assy P/N 117-602351 
- Intake protection inside RH assy P/N 117-602401 
- Intake protection inside LH assy P/N 117-602371 
- Intake protection outer RH assy P/N 117-602421 
- Air inlet LH P/N D710M1010801 
- Air inlet RH P/N D710M2010801 
For further details, see Installation and Operating Manual. 
The 2B, 2B1, and 2D installation are approved for single-engine application only. 
The 2C, 2C1, 2C2, 2S1, 2S2, and 2E engine models are restricted to multi-engine helicopter 
applications.

TCDS E00054EN Page 9 of 12 
NOTE  7. ACCESSORY DRIVE PROVISIONS 
Designation 
Direction* 
Of 
Rotation 
Rotation 
Speed rpm 
Maximum 
Torque in 
Overload  
(in-lb) 
Maximum 
Static 
Overhang 
(in-lb) 
Fuse Shaft 
Breakaway 
Torque 
(in-lb) 
Maximum 
Permanent Shaft 
Power(SHP) 
Twin 
engine 
OEI 
situation 
Starter-generator 
2S1 
2S2 
2C/2C1 
2C2 
2E 
2B/2B1 
2D 
CW 11330 443 
456 
221 841 10.1 
4.7 
4.7 
6.7 
16.1 (1) 
10.1 
10.1 
6.7 
6.7 
16.1 (1) 
10.1 (single engine) 
12.1 (single engine) 
Oil cooling fan output drive: 
2S1/2S2 
2C2 
CCW 
CCW 
12253 
11452 
89 
89 
133 
133 
885 
885 
2.0 
2.0 
2.0 
2.0 
For Accessories: 
Oil pump pack 
HP fuel pump 
LP fuel pump 
Control system Alternator 
CW 
CCW 
CCW 
11883 
11883 
12180 
*CW: clockwise; CCW: counterclockwise. The rotation direction of the power drives for the accessories is indicated conside ring the 
power drive seen from the outside.  The rotation direction of the engine rotors is indicated with respect to viewing the engine from its 
rear end. For further details see Installation Manual. 
(1) For Arriel 2E, refer to the Installation and Operating Manual for detailed power shaft extraction in case of failure 
Oil cooling fan output drive is available on 2S1 and 2C2 only. 
NOTE  8. ENGINE RATINGS 
Engine ratings are based on calibrated test rig with performance under the following conditions: 
Static, sea level standard conditions (59
o
F, 29.92” Hg) 
No airbleed, no accessory power extraction 
6,409 RPM output shaft drive speed for 2S1 and 2S2 
6,000 RPM output shaft drive speed for 2B/2B1, 2C, 2C2, 2D, and 2E 
Fuel load heat value = 18,545 BTU/lb 
The ratings given above are minimum final test performance of production and overhaul engines in 
accordance with engine acceptance test specification: 
No. 0.292.02.941.0 for 2S1 
No. 0.292.02.945.0 for 2B 
No. 0.292.02.949.0 for 2B1 
No. 0.292.02.944.0 for 2C 
No. 0.292.02.948.0 for 2C1 
No. 0.292.02952.0 for 2C2 
No. 0.292.02953.0 for 2S2 
No. AA049722 for 2D 
No. AA043433 for 2E 
Use the exhaust pipe specified below with calibrated test bed air intake No. 6.528.12.500.0 for 2S1, 2B, 
2B1, 2C, and 2C1and No. 6.528.12.501.0 for 2C2, 2S2, 2D and 2E. 
Exhaust pipe No. 0.292.81.500.0 is part of the engine definition (primary exhaust pipe), and is common 
to the 2S1, 2B, 2B1, 2C, and 2C1. 
Exhaust pipe No. 0.292.81.502.0 is part of the engine definition (primary exhaust pipe), and is common 
to the 2S2 and 2C2. 
Exhaust pipe No. 0.292.81.047.0 is part of the Arriel 2D engine definition (primary exhaust pipe) 
Exhaust pipe No. 0.292.81.053.0 is part of the Arriel 2E engine definition (primary exhaust pipe)

TCDS E00054EN Page 10 of 12 
NOTE  9. FUEL SUPPLY REQUIREMENTS 
The ARRIEL 2S1, 2S2, 2B, 2B1, 2C, 2C1, 2C2, 2D and 2E have a fuel filter supplied with the engine. 
Use of anti-icing additive for fuel temperature: < -20 oC for Arriel 2B, 2B1, 2C, 2D, 2E, 2C1, and 2S1. 
< 30 oC for Arriel 2C2 and 2S2 
NOTE  10. OIL SYSTEM: Refer to Installation Manual. 
NOTE  11. ENGINE MONITORING TRANSMITTERS: Refer to Installation Manual. 
NOTE  12. CONTROL SYSTEM: 
Single channel electronic engine control system with manual backup for 2S1, 2B, and 2C. 
Dual channel electronic engine control system with optional auxiliary backup control for 2B1, 2C1, 2C2 
and 2S2. 
Dual channel electronic engine control system with auxiliary back-up control for 2D. 
Dual channel electronic engine control system for 2E. 
NOTE  13. ENGINE FIRE DETECTOR 
The ARRIEL 2S1 and 2S2 have no fire detectors installed on the engine. 
The Arriel 2B, 2B1, 2C, 2C1 and 2C2 feature mounting and wiring for installation of three fire 
detectors. Fire detectors are not part of the engine definition. 
The Arriel 2D feature mounting and wiring for installation of three fire detectors. Fire detectors are part 
of the engine definition. 
The Arriel 2E feature mounting and wiring for installation of one fire detector.  Fire detector is part of 
the engine definition. 
NOTE  14. Refer to Installation Manual for approved oil specifications. 
NOTE  15. Refer to Installation Manual for approved fuel and additive specification. 
NOTE  16. Life-limited components are listed in EASA-approved Airworthiness Limitations Section (Chapter 5) of 
the engine Maintenance Manual. 
NOTE  17. Permissible overhaul and inspection intervals are listed in EASA- approved Airworthiness Limitations 
Section (Chapter 5) of the engine Maintenance Manual. 
NOTE  18. MANUALS REQUIRED BY § 33.5 
ARRIEL 2S1 
ARRIEL 2B 
ARRIEL 2B1 
ARRIEL 2C 
ARRIEL 2C1 
ARRIEL 2C2 
ARRIEL 2S2 
ARRIEL 2D 
ARRIEL 2E 
Performance 
Manual No. 
Installation 
Manual No. 
Operation 
Manual No. 
Maintenance 
Manual No. 
Repair Manual 
No. 
X 292 L0 001 9 
X 292 M5 001 9 
X 292 N5 002 9 
X 292 M1 001 9 
X 292 N4 002 9 
X 292 N6 002 9 
X 292 P5 001 9 
AA049088 
AA056554 
X 292 L0 001 1 
X 292 M0 001 2 
X 292 N5 001 9 
X 292 M1 001 2 
X 292 N4 001 2 
X 292 N6 404 1 
X 292 P5 001 2 
X 292 R1 001 2 
X 292 R2 001 2 
See Note 19 
See Note 19 
See Note 19 
See Note 19 
See Note 19 
See Note 19 
See Note 19 
See Note 19 
See Note 19 
X 292 L0 301 2 
X 292 M5 450 2 
X 292 N5 450 2 
X 292 M1 450 2 
X 292 N4 450 2 
X 292 N6 450 2 
X 292 P5 451 2 
X 292 R1 450 2 
X 292 R2 300 2 
X 292 L0 500 2 
---
---
---
---
X 292 P5 550 2 
X 292 R1 500 2 
X 292 R2 500 2 
NOTE  19. The Operation Manual is contained within Chapter 15 of the Installation Manual. 
NOTE  20. DELETED.

TCDS E00054EN Page 11 of 12 
NOTE  21. Each of the documents listed below must state that it is approved by the European Aviation Safety 
Agency (EASA) or, for approvals made before September 28, 2003 by the Direction Generale de 
L'Aviation Civile (DGAC). Any such documents including those approved under a delegated authority, 
are accepted by the FAA and are considered FAA accepted. 
• Service bulletins, 
• Structural repair manuals, 
• Vendor manuals, 
• Aircraft flight manuals, and 
• Overhaul and maintenance manuals. 
These approvals pertain to the type design only. 
NOTE  22. The Models shown on this TCDS have the following general characteristics: 
MODELS CHARACTERISTICS 
ARRIEL 2S1 Base Model 
ARRIEL 2B Similar to ARRIEL 2S1. The rating structure is simplified for single eng ine 
application: Takeoff and Maximum Continuous ratings only. The main 
differences are the mounts, provision for the tail rotor drive, and the deletion of 
the oil cooler fan drive on the reduction gearbox. 
ARRIEL 2B1 Similar to ARRIEL 2B. The main diff erence is the dual channel electronic 
engine control system. 
ARRIEL 2C Similar to ARRIEL 2S1.  The main differences are the mounts and the deletion 
of the oil cooler fan drive on the reduction gearbox. 
ARRIEL 2C1 Similar to ARRIEL 2C. The main differ ence is the dual channel electronic 
engine control system. 
ARRIEL 2C2 Similar to engine ARRIEL 2C1, main differences being the increased power 
ratings, (thermal and torque) the HIP/SARM rating (similar to 2S1), new HPT 
material and new axial compressor wheel. 
ARRIEL 2S2 Similar to the ARRIEL 2S1.  The main differences are a control system with a 
dual channel FADEC with mechanical back-up, increased power ratings and 
new HPT blade material and new axial compressor wheel (similar to 2C2). 
ARRIEL 2D Similar to the ARRIEL 2C2.  The main differences are: it is a single-engine 
application that has a 30-minute Take-off Power Rating, new dual channel 
electronic control system, new power turbine rear bearing support with new 
containment ring, new power turbine blade profile, and engine mounts identical 
to those of the Arriel 2B/2B1. 
ARRIEL 2E Similar to the ARRIEL 2D. The main difference s are: it is a dual-engine 
interface of the power transmission shaft with the helicopter, mounting system 
adapted to helicopter interface, blade material of the gas generator turbine, 
drain system, and hydro mechanical unit. 
NOTE  23. Operators who use the 30-minute power rating must comply with the airworthiness limitations (if any) 
as specified in the ARRIEL 2S1 Maintenance Manual X 292 L0 301 2, Volume 1, Chapter 0; , ARRIEL 
2C2 Maintenance Manual X 292 L0 301 2, Volume 1, Chapter 0; ARRIEL 2S2 Maintenance Manual X 
292 P5 451 2, Volume 1, Chapter 0; ARRIEL 2D Maintenance Manual X 292 R1 450 2, and ARRIEL 
2E Maintenance Manual X 292 R2 300 2. 
NOTE  24 DISPATCH LIMITATIONS: 
ARRIEL 2B, 2B1, 2C, 2C1, 2C2 and 2S2: All engine systems and equipment must be functional prior 
to aircraft take-off. Any engine system or equipment malfunction, which occurs during flight, must be 
repaired prior to the next flight. 
ARRIEL 2S1: The engine is approved to operate with certain faults present in the control system, based 
on satisfaction of Part 33 requirements and appropriate control system reliability requirements. Criteria 
pertaining to the dispatch and maintenance requirements for the engine control system are specified in 
the Installation Manual.  The airframe manufacturers may use different nomenclature in adapting these 
fault categories to the aircraft maintenance and display systems; however, the maximum operating 
intervals are restricted as defined in the Installation Manual.

TCDS E00054EN Page 12 of 12 
Arriel 2D and 2E: An Engine Dispatch Configuration analysis has been performed and is referenced in 
the Installation Manual. 
NOTE 25 The engine is approved for the following engine models for a maximum exhaust gas overtemperature for 
inadvertent use due to abnormal operation for periods up to 20 seconds without requiring rejection of 
the engine from service or maintenance action other than to correct the cause. The cause of the 
overtemperature must be investigated and corrected. Follow procedure defined in Maintenance Manual. 
Arriel 2B maximum inadvertent exhaust gas overtemperature of 941oC 
Arriel 2D maximum inadvertent exhaust gas overtemperature of 994oC 
Arriel 2E maximum inadvertent exhaust gas overtemperature of 974 oC all engines operating 
---END---
```

## ADs (44, in force first)

- [AD 2026-15-03](https://openairdocs.org/ad/2026-15-03): Turbine Section · Safran Helicopter Engines Arriel 2E. Effective Sep 3, 2026
- [AD 2023-22-03](https://openairdocs.org/ad/2023-22-03): Turbine section · Safran Helicopter Engines Arriel 2D and Arriel 2E. Effective Dec 26, 2023
- [AD 2021-13-08](https://openairdocs.org/ad/2021-13-08): Fuel Control/Turbine Engines · Safran Helicopter Engines Arriel 2C and Arriel 2S1. Effective Aug 19, 2021
- [AD 2021-13-03](https://openairdocs.org/ad/2021-13-03): Fuel Control/Turbine Engines · Safran Helicopter Engines Arriel 2B, Arriel 2B1, Arriel 2C and 4 more. Effective Aug 13, 2021
- [AD 2021-05-08](https://openairdocs.org/ad/2021-05-08): Engine BMEP/Torque Indicating · Safran Helicopter Engines Arriel 2C, Arriel 2C1, Arriel 2S1 and 1 more. Effective Apr 15, 2021
- [AD 2018-12-01](https://openairdocs.org/ad/2018-12-01): Engine Fuel and Control · Safran Helicopter Engines Arriel 2B and Arriel 2B1. Effective Sep 12, 2018
- [AD 2018-10-01](https://openairdocs.org/ad/2018-10-01): Accessory Gearboxes · Safran Helicopter Engines Arriel 2E. Effective Jun 11, 2018
- [AD 2017-05-08](https://openairdocs.org/ad/2017-05-08): Failure of the HMU · Safran Helicopter Engines Arriel 2B. Effective Apr 13, 2017
- [AD 2016-25-13](https://openairdocs.org/ad/2016-25-13): Engine accessory gearbox (AGB) · Safran Helicopter Engines Arriel 2B, Arriel 2B1, Arriel 2C and 6 more. Effective Feb 3, 2017
- [AD 2016-08-16](https://openairdocs.org/ad/2016-08-16): Constant delta-pressure (delta-P) diaphragm of the fuel metering valve · Turbomeca Arriel 2E. Effective May 25, 2016
- [AD 2016-03-02](https://openairdocs.org/ad/2016-03-02): Torque conformation box (TCB) · Turbomeca Arriel 2C, Arriel 2C1, Arriel 2C2 and 2 more. Effective Mar 15, 2016
- [AD 2015-13-04](https://openairdocs.org/ad/2015-13-04): Engine accessory gearbox (AGB) · Turbomeca Arriel 1A1, Arriel 1A2, Arriel 1B and 16 more. Effective Sep 1, 2015
- [AD 2014-12-05](https://openairdocs.org/ad/2014-12-05): HMU drive gear shaft · Turbomeca Arriel 2B, Arriel 2B1, Arriel 2C and 4 more. Effective Aug 4, 2014
- [AD 2014-07-06](https://openairdocs.org/ad/2014-07-06): Hydromechanical metering unit · Turbomeca Arriel 2B1. Effective May 15, 2014
- [AD 2013-22-22](https://openairdocs.org/ad/2013-22-22): Hydromechanical metering unit (HMU) · Turbomeca Arriel 2D. Effective Dec 20, 2013
- [AD 2012-18-18](https://openairdocs.org/ad/2012-18-18): Gas generator (GG) turbine blade · Turbomeca Arriel 2B, Arriel 2B1, Arriel 2C2 and 1 more. Effective Oct 24, 2012
- [AD 2012-12-20](https://openairdocs.org/ad/2012-12-20): Digital engine control units · Turbomeca Arriel 2C1, Arriel 2C2 and Arriel 2S2. Effective Jul 26, 2012
- [AD 2012-08-18](https://openairdocs.org/ad/2012-08-18): PT Blade Rupture · Turbomeca Arriel 2B and Arriel 2B1. Effective May 30, 2012
- [AD 2011-24-07](https://openairdocs.org/ad/2011-24-07): Hydromechanical units (HMUs) · Turbomeca Arriel 2B. Effective Dec 14, 2011
- [AD 2009-09-03 R1](https://openairdocs.org/ad/2009-09-03-R1): Uncommanded in-flight engine shutdown · Turbomeca Arriel 2B and Arriel 2B1. Effective Nov 1, 2010
- [AD 2010-20-05](https://openairdocs.org/ad/2010-20-05): Engines with modification TU 132 · Turbomeca Arriel 2B. Effective Oct 12, 2010
- [AD 2009-08-08 R1](https://openairdocs.org/ad/2009-08-08-R1): PT Blades · Turbomeca Arriel 1B, Arriel 1D, Arriel 1D1 and 2 more. Effective May 7, 2010
- [AD 2010-04-07](https://openairdocs.org/ad/2010-04-07): Engine · Turbomeca Arriel 2S1. Effective Mar 23, 2010
- [AD 2009-01-11](https://openairdocs.org/ad/2009-01-11): Hydro Mechanical Unit (HMU) low fuel pressure switch · Turbomeca Arriel 2B and Arriel 2B1. Effective Feb 27, 2009
- [AD 2007-24-10](https://openairdocs.org/ad/2007-24-10): HP/LP fuel pump · Turbomeca Arriel 2S1 and Arriel 2S2. Effective Dec 14, 2007
- [AD 2007-10-06](https://openairdocs.org/ad/2007-10-06): Cases of flameout · Turbomeca Arriel 2B1. Effective May 29, 2007
- [AD 2005-25-13](https://openairdocs.org/ad/2005-25-13): Tree turbine shield · Turbomeca Arriel 2B and Arriel 2B1. Effective Dec 28, 2005
- [AD 2003-03-12](https://openairdocs.org/ad/2003-03-12): Bleed Valve · Turbomeca Arriel 1A2, Arriel 1C, Arriel 1C1 and 12 more. Effective Mar 7, 2003
- [AD 2002-16-25](https://openairdocs.org/ad/2002-16-25): Fuel pumps · Turbomeca Arriel 2B, Arriel 2C and Arriel 2S1. Effective Sep 26, 2002
- [AD 2021-08-02](https://openairdocs.org/ad/2021-08-02) (historical): Turbine Section · Safran Helicopter Engines Arriel 2D and Arriel 2E. Effective Jun 21, 2021
- [AD 2016-04-12](https://openairdocs.org/ad/2016-04-12) (historical): Engine accessory gearbox (AGB) · Turbomeca Arriel 2B, Arriel 2B1, Arriel 2C and 6 more. Effective Apr 14, 2016
- [AD 2014-19-05](https://openairdocs.org/ad/2014-19-05) (historical): Engine accessory gearbox (AGB) · Turbomeca Arriel 1A1, Arriel 1A2, Arriel 1B and 16 more. Effective Nov 5, 2014
- [AD 2013-01-07](https://openairdocs.org/ad/2013-01-07) (historical): Hydro-mechanical metering unit (HMU) · Turbomeca Arriel 2D. Effective Mar 7, 2013
- [AD 2012-03-11](https://openairdocs.org/ad/2012-03-11) (historical): High-pressure/low-pressure (HP/LP) pump hydro-mechanical metering units  
 (HMUs) · Turbomeca Arriel 2B and Arriel 2B1. Effective Mar 20, 2012
- [AD 2011-13-05](https://openairdocs.org/ad/2011-13-05) (historical): Gas Generator (GG) Turbine Blade · Turbomeca Arriel 2B and Arriel 2B1. Effective Aug 12, 2011
- [AD 2007-19-09 R1](https://openairdocs.org/ad/2007-19-09-R1) (historical): Pressure relief valve · Turbomeca Arriel 2B1. Effective Jul 7, 2010
- [AD 2010-03-06](https://openairdocs.org/ad/2010-03-06) (historical): Fuel pump · Turbomeca Arriel 2B and Arriel 2B1. Effective Mar 11, 2010
- [AD 2009-09-03](https://openairdocs.org/ad/2009-09-03) (historical): Turbine blade · Turbomeca Arriel 2B and Arriel 2B1. Effective Jun 1, 2009
- [AD 2007-19-09](https://openairdocs.org/ad/2007-19-09) (historical): Constant delta pressure valve · Turbomeca Arriel 2B1. Effective Oct 3, 2007
- [AD 2007-10-07](https://openairdocs.org/ad/2007-10-07) (historical): HP/LP pump assembly drive shaft · Turbomeca Arriel 2B and Arriel 2B1. Effective May 29, 2007
- [AD 2005-13-25 R1](https://openairdocs.org/ad/2005-13-25-R1) (historical): HMU acceleration controller axle · Turbomeca Arriel 2B. Effective May 22, 2007
- [AD 2007-03-14](https://openairdocs.org/ad/2007-03-14) (historical): Hydro-mechanical metering unit (HMU) · Turbomeca Arriel 2B1. Effective Feb 20, 2007
- [AD 2006-21-10](https://openairdocs.org/ad/2006-21-10) (historical): Splines of high-pressure (HP) pump drive gear shaft · Turbomeca Arriel 2B and Arriel 2B1. Effective Nov 24, 2006
- [AD 2005-13-25](https://openairdocs.org/ad/2005-13-25) (historical): Hydromechanical unit (HMU) acceleration controller · Turbomeca Arriel 2B. Effective Jul 11, 2005

## Registered aircraft by registry model (OpenAirDocs)

- [Safran ARRIEL-2D](https://openairdocs.org/engine/safran-arriel-2d): 314 aircraft (registry code 59997)
- [Turbomeca ARRIEL-2B1](https://openairdocs.org/engine/turbomeca-arriel-2b1): 271 aircraft (registry code 60056)
- [Turbomeca ARRIEL-2D](https://openairdocs.org/engine/turbomeca-arriel-2d): 232 aircraft (registry code 60080)
- [Safran ARRIEL-2E](https://openairdocs.org/engine/safran-arriel-2e): 93 aircraft (registry code 59998)
- [Turbomeca ARRIEL-2S2](https://openairdocs.org/engine/turbomeca-arriel-2s2): 57 aircraft (registry code 60036)
- [Turbomeca ARRIEL-2S1](https://openairdocs.org/engine/turbomeca-arriel-2s1): 30 aircraft (registry code 60057)
- [Turbomeca ARRIEL-2B](https://openairdocs.org/engine/turbomeca-arriel-2b): 20 aircraft (registry code 60037)
- [Safran ARRIEL-2B1](https://openairdocs.org/engine/safran-arriel-2b1): 11 aircraft (registry code 59995)
- [Turbomeca ARRIEL-2C](https://openairdocs.org/engine/turbomeca-arriel-2c): 10 aircraft (registry code 60054)
- [Turbomeca ARRIEL-2C2](https://openairdocs.org/engine/turbomeca-arriel-2c2): 8 aircraft (registry code 60039)
- [Safran ARRIEL-2C2](https://openairdocs.org/engine/safran-arriel-2c2): 2 aircraft (registry code 59988)
- [Turbomeca ARRIEL-2C1](https://openairdocs.org/engine/turbomeca-arriel-2c1): 1 aircraft (registry code 60038)

---
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