- Holder
- Safran Helicopter Engines S.A.
- Revision
- 2
- Revised
- October 30, 2025
- Status
- Current
- Product
- Engine
- Certification basis
- Part 33
- Models
- 1
- Registered
- 17 aircraft
The release keeps the latest revision of each data sheet. Model names are as the data sheet lists them.
On this page
Models · 1
| Model | Also known as | Note |
|---|---|---|
| Arrano 1A |
Airworthiness directives · 0
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What the data sheet says
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Engines of models described herein conforming with this data sheet (which is part of Type Certificate Number E00096EN) 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.
64510 Bordes
France
TYPE The ARRANO 1 series turboshaft engines have an annular air inlet integrating inlet guide vanes, a
two-stage centrifugal compressor driven by a single-stage high pressure turbine, a reverse flow
combustion chamber and a single-stage low pressure turbine (power turbine) driving a reduction
gearbox located at the front of the engine and an exhaust pipe. The high pressure (gas generator)
shaft drives the accessory gearbox. The engine is controlled by a Full Authority Digital Electronic
Control (FADEC).
I. MODELS ARRANO 1A
RATINGS (See NOTE 1), shaft hp (kW)
Maximum continuous 990 (738)
Takeoff (5 minutes) 1141 (851)
30-minute All Engines Operating (AEO ) 1141 (851)
Continuous One Engine Inoperative (OEI) 1239 (924)
2 min OEI 1394 (1040)
30 sec OEI 1467 (1094)
PRINCIPAL DIMENSIONS, inches (mm)
Length 48 (1219)
Width 24.5 (623.2)
Height 32.2 (817)
CENTER OF GRAVITY Refer to Installation and Operating Manual
WEIGHT - Completely equipped with
EECU, pounds (kg)
381.4 (173.5)
LEGEND: "- -" INDICATES "SAME AS PRECEDING MODEL"
"---" INDICATES “NOT APPLICABLE"
U.S. DEPARTMENT OF TRANSPORTATION
FEDERAL AVIATION ADMINISTRATION
TYPE CERTIFICATE DATA SHEET
TCDS NUMBER E00096EN
REVISION: 2
DATE: October 30, 2025
SAFRAN HELICOPTER ENGINES, S. A.
MODELS:
ARRANO 1A
PAGE 1 2 3 4 5 6 7 8
REV. 2 2 0 0 2 1 0 1
TCDS E00096EN Page 2 of 8
CONTROL SYSTEM Dual channel electronic engine control system
FUEL CONTROL Refer to Installation and Operating Manual
DRIVE SHAFT TYPE Refer to Installation and Operating Manual
IGNITION High energy ignition generator with dual output, 2 Igniter plugs and cables
STARTING The automatic starting sequence is ensured by the Engine Electronic Control Unit using the aircraft
starter generator.
APPROVED FUELS Refer to Installation and Operating Manual for approved fuel and additive specifications.
APPROVED OILS Refer to Installation and Operating Manual for approved oil specifications.
EQUIPMENT The equipment necessary to operate the engine and that is not included in the Engine Type Design
Definition is defined in the applicable Installation and Operating Manual.
CERTIFICATION BASIS
ARRANO 1A
Airworthiness Standards: 14 CFR, Part 33, effective February 1, 1965, as amended by 33-1
through 33-34
Special condition:
• 33-20-01-SC, 30 min AEO power rating
An Equivalent Level of Safety Finding has been made for the following regulation:
• 14 CFR 33.27(c) and 33.27(f), Partial Shaft Excursion for Overspeed Evaluation
(documented in ELOS Memo TC04141EN-E-P-4)
The European Aviation Safety Agency (EASA) originally type certificated this engine on June 18,
2019. The FAA validated this product under U.S. Type Certificate Number E00096EN, on
December 23, 2020.
APPLICATION
MODEL DATE ISSUED DELETED
ARRANO 1A August 29, 2019 December 23, 2020
TCDS E00096EN Page 3 of 8
NOTES
NOTE 1. ENGINE RATINGS
The performance values specified are defined in the Installation and Operating Manual and correspond to
minimum values at 109% N2 under the following conditions:
- Uninstalled performance ;
- Worst aged engine ;
- No temperature, pressure or flow angle distortion at air inlet ;
- Power measured on engine test bed with reference exhaust ;
- Sea Level Static, ISA condition ;
- No back pressure downstream of the exhaust pipe ;
- No air bleed ;
- No electrical power off-take ;
- No power drawn by any accessories other than those required for engine operation;
- Fuel heating value at 43 136 kJ/kg ;
- Humidity considered is the reference value of 0.0069 kg/kg dry air humidity mixing ratio, which
corresponds to 65% relative humidity at sea level ISA condition ;
- Torque limits presented in NOTE 20.
NOTE 2. TEMPERATURE LIMITS
MAXIMUM EXHAUST GAS TEMPERATURE (T45 °C)
Measured with thermocouples at the gas generator turbine outlet
ARRANO 1A
Takeoff 912
Maximum continuous 886
30-minute AEO 912
Continuous OEI 914
2 min OEI 957
30 sec OEI 991
AEO Transient (20 second limit) 934
Starting (unlimited) 800
Starting (maximum over-temperature): 850
APU mode 665
FUEL TEMPERATURE (°C)
Measured at engine inlet
ARRANO 1A
Maximum operating temperature: +57°C
Minimum fuel temperature for operating, starting and restart envelope: The highest temperature between
-45°C and Freezing point temperature defined for the applicable fuel standard.
Refer to the Installation and Operating Manual for detailed definition and limitations of normal fuels usage.
The minimum fuel temperature is subject, for certain fuels, to mandatory use of anti-icing additive for
temperatures below -30°C. Refer to the Installation and Operating Manual for further details.
TCDS E00096EN Page 4 of 8
NOTE 2.
continued
OIL TEMPERATURE (°C)
Measured at the oil filter outlet.
ARRANO 1A
Maximum operating temperature: 115°C
Minimum oil temperature for starting:
-36°C for oils with viscosity rating of 5 cSt
-45°C for oils with viscosity rating of 3 cSt
Minimum oil temperature before applying power:
• Without anti-icing additives in fuel, the minimum oil temperature before applying
power is +20 °C. The authorization of applying power is given by the flag “powering
up not allowed” set to 0 ;
• With anti-icing additives in fuel, the minimum oil temperature before applying power
is 0 °C.
During the oil warm-up period, the engine shall be run in APU mode or in IDLE mode, or in
FLIGHT mode with the minimum collective pitch position.
Refer to Installation and Operating Manual for detailed oil temperature limitations
NOTE 3. PRESSURE LIMITS
FUEL
ARRANO 1A
Detailed information about fuel pressures depending on atmospheric conditions and fuel specifications are
provided in the Installation and Operating Manual.
OIL
ARRANO 1A
Normal oil pressure during operation: between 58 PSI (400 kPa) (relative pressure) and 130.5 PSI (900 kPa)
(relative pressure).
Minimum and Maximum level warnings are functions of N1 and oil temperature
NOTE 4. ACCESSORY DRIVE PROVISIONS
NOTE 5. MODEL DESCRIPTION
ARRANO 1A: Base model
NOTE 6. ACCESSORIES, COMPONENTS, OR SYSTEM ASSEMBLIES, WITH AIRCRAFT LEVEL
REQUIREMENTS, PROVIDED AS PART OF ENGINE TYPE DESIGN
Refer to Installation and Operating Manual
NOTE 7. AIRCRAFT ACCESSORIES, COMPONENTS, OR SYSTEM ASSEMBLIES INSTALLED ON THE
ENGINE BUT ARE NOT PROVIDED AS PART OF ENGINE TYPE DESIGN
Refer to Installation and Operating Manual
NOTE 8. SPECIAL ANTI-ICING OR DE-ICING REQUIREMENTS
Refer to NOTE 2 and the Installation and Operating Manual for requirements for the use of fuel anti-icing
additives.
ARRANO 1A
ACCESSORY /
Direction*
of
Nominal RPM Maximum
Steady
Maximum
Torque at
Maximum Static
Overhung Moment
DRIVE Rotation State Power Overload (in-lb) Allowable for
HP Accessories (in-lb)
Starter-Generator CW 11,727 (100% N1) 17.4 708.1 221.3
* CW = REFERENCE FACING ENGINE ACCESSORY PAD
CLOCKWISE
TCDS E00096EN Page 5 of 8
NOTE 9. ENGINE MOUNT SYSTEM PROVISIONS
Refer to Installation and Operating Manual
NOTE 10. POWER BOOST, INJECTION OR AUGMENTATION SYSTEMS
Not Applicable
NOTE 11. SPECIAL INSTALLATION REQUIREMENTS
AIR INTAKE REQUIREMENTS
The engine was certified for ingestion of birds, hail, rain and snow based on the capability of the aircraft inlet
design as defined in the Installation and Operating Manual. The following inlets have been approved for use
with this engine: ECP H160.001893 and ECP H160.000900
INSTALLATION CONDITIONS
ARRANO 1A EECU shall be installed outside of a designated fire zone and outside of a zone that might lead to
overheat conditions. Corresponding installation assumptions are defined in the Installation and Operating
Manual.
Fire detection is not part of the Engine design and is under Helicopter manufacturer responsibility.
LIGHTNING AND ELECTROMAGNETIC INTERFERENCES PROTECTION
Qualified environmental conditions of the ARRANO 1A control system components, including EMI and HIRF,
are detailed in the Installation and Operating Manual.
TIME LIMITED DISPATCH
ARRANO 1A has been approved for Time Limited Dispatch. The maximum rectification period for each
dispatchable state is specified in the Airworthiness Limitations Section of the Maintenance Manual. The TLD
dispatchable fault configurations are defined in the Installation and Operating Manual. (See NOTE 15)
EMISSIONS STANDARDS
The following emissions standards promulgated in 14 CFR Part 34, Amendment 5A, effective October 23, 2013
have been complied with for the ARRANO 1A:
• Fuel Venting Emission Standards: 14 CFR 34.11
OVERSPEED PROTECTION
ARRANO 1A is equipped with a power turbine overspeed shutdown device. Refer to the Installation and
Operating Manual for additional details.
NOTE 12. MANUFACTURER’S SERVICE BULLETINS OR OTHER INSTRUCTIONS COVERING MATTERS OF
INTEREST
Each of the documents listed below must state that it is approved by the European Aviation Safety Agency
(EASA) or approved under EASA.21J.070. Any such documents including those approved under a
delegated authority, are accepted by the FAA and are considered FAA approved.
• Service bulletins,
• Structural repair manuals,
• Vendor manuals,
• Aircraft flight manuals, and
• Overhaul and Maintenance Manuals,
• Design changes.
These approvals pertain to the type design only.
NOTE 13. SPECIAL OPERATING PROCEDURES
OEI TRAINING MODE
ARRANO 1A EECU features an OEI TRAINING mode for training crews in the event of engine failure. Refer
to the applicable Installation and Operating Manual for additional details.
APU MODE
ARRANO 1A engine has APU mode capability. Use conditions of APU mode are defined in Installation and
Operating Manual.
TCDS E00096EN Page 6 of 8
NOTE 14. SPECIAL REPAIR OR OVERHAUL LIMITATIONS
Not Applicable
NOTE 15. APPLICABLE INSTALLATION, MAINTENANCE AND OVERHAUL MANUALS MANUALS
REQUIRED BY 14 CFR PART 33.5:
ARRANO 1A
Installation and Performance Manual
Operating Manual
X3561A0022 X3561A0012
Installation and Operating Manual includes System Description and Time Limited Dispatch Summary. The
manuals listed above have been accepted or approved per 14 CFR 33.5
MANUALS REQUIRED BY 14 CFR PART 33.4:
ARRANO 1A
Maintenance Manual Overhaul Manual Maintenance Manual Time Limited Dispatch
Trouble Shooting Book Summary
X3561A4602 X3561A5002 X3561A4612 X3561A4602
Component Service Letters and
Maintenance Manuals Service Bulletins
Various Refer to the SL and SB
directory
The manuals listed above have been accepted or approved per 14 CFR 33.4
NOTE 16. IMPORT REQUIREMENTS:
To be considered eligible for installation on U.S. registered aircraft, each new engine to be exported to the United
States with EASA airworthiness approval shall have EASA Form 1, Authorized Release Certificate. The EASA
Form 1 should state that the engine conforms to the type design approved under the U.S. Type Certificate
E00096EN, is in a condition for safe operation and has undergone a final operational check.
Additional guidance is contained in FAA Advisory Circular 21-23, Airworthiness Certification of Civil Aircraft,
Engines, Propellers and Related Products Imported into the United States.
NOTE 17. LIFE LIMITED PART INFORMATION:
Life-limited components are listed in Chapter 05 of the engine Maintenance Manual.
NOTE 18. MILITARY MODEL INFORMATION:
Not applicable.
TCDS E00096EN Page 7 of 8
NOTE 19. PERMISSIBLE ENGINE ROTOR AND OUTPUT SHAFT SPEEDS:
GAS GENERATOR SPEED (PERCENT N1)
ARRANO 1A
100% N1 = 44,139 rpm
In-flight and APU mode Minimum speeds:
Idle Mode (1) Idle with PT
locked
APU Mode Flight Mode (2)
57% 57% 59.8% 69.8
(1) This speed corresponds to the minimum stabilized N1 speed in IDLE mode with N2=80%
(2) This speed corresponds to the minimum stabilized N1 speed in FLIGHT mode with N2=100%
In-flight maximum speeds, All Engine Operative (*):
Take-off
(5 minutes)
30-minute
AEO
Maximum
Continuous
AEO transient
(20 seconds)
104% 104% 103% 105.5%
In-flight maximum speeds, One Engine Inoperative:
30-second
OEI
2-minute
OEI
Continuous
OEI
107.8% 105.6% 104.5%
POWER TURBINE SPEED (PERCENT N2)
ARRANO 1A
100% N2 = 34,767 rpm (power turbine)
100% N2 = 7,939 rpm on the power drive.
In flight Minimum Speeds:
Stabilized Transient (20 seconds)
90% 70%
Operation with turbine locked is only authorized in APU mode and for engine starting
In flight Maximum Speeds:
Stabilized
109%
A Maximum Inadvertent Overspeed of 115% has been certified for the ARRANO 1A model. This corresponds
to the maximum N2 speed for which inadvertent occurrence of up to 20 seconds has been demonstrated not to
require rejection of the engine from service or maintenance action (other than to correct the cause).
TCDS E00096EN Page 8 of 8
----END----
NOTE 20. MAXIMUM OUTPUT/SHAFT TORQUE LIMITS (N.m)
Maximum torque, All Engines Operative (1):
Take-off 30-minute Maximum AEO transient
(5 minutes) AEO Continuous (20 seconds) (2)
940 940 816 940
Maximum torque, One Engine Inoperative (2):
30 second OEI 2 minute OEI Continuous OEI
1327 1176 1033
(1) For AEO ratings, torque values presented above correspond to the maximum torque validated for the
engine.
(2) For OEI ratings and AEO transient 20s, engine torque values are limited by torque toppings sent by the
helicopter on ARINC frame to the EECU in order to protect the helicopter main gearbox. Values presented
above correspond to the maximum value of the torque topping range authorized by the EECU for each power
rating.
For further details refer to Installation and Operating Manual.
NOTE 21. MAXIMUM PERMISSIBLE P3 AIR BLEED FROM THE OUTLET OF THE 2ND STAGE
CENTRIFUGAL COMPRESSOR
Maximum air mass flow:
P3 air bleed extraction for helicopter use is limited by the section of the P3 extraction restrictor. The maximum
possible extraction is 205 g/s and corresponds to Take-Off power at ISA Sea Level conditions.
For any other operating point, refer to Installation and Operating Manual
Power loss due to air bleed: Refer to Installation and Operating Manual.
NOTE 22. ROTOR DISK INTEGRITY AND ROTOR BLADE CONTAINMENT (WHERE SPECIAL
REQUIREMENTS APPLY)
Not applicable.
NOTE 23. SOFTWARE:
The ARRANO 1A EECU software has been validated in accordance with the requirements of DO-178B
guidelines for a level A software.