- Holder
- Honeywell Aerospace US LLC
- Revision
- 2
- Revised
- March 27, 2026
- Status
- Current
- Product
- Engine
- Certification basis
- Part 33
- Models
- 1
- Registered
- 10 aircraft
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Models · 1
| Model | Also known as | Note |
|---|---|---|
| HTS900-2-1D |
Airworthiness directives · 0
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DEPARTMENT OF TRANSPORTATION
FEDERAL AVIATION ADMINISTRATION
E00013LA
Revision 2
Honeywell Aerospace US LLC
HTS900-2-1D
March 27, 2026
TYPE CERTIFICATE DATA SHEET NO. E00013LA
Engines of models described herein conforming with this data sheet (which is part of Type Certification No.
E00013LA) 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 FAA approved
manufacturer's manual and other FAA approved instructions.
TYPE CERTIFICATE HOLDER: Honeywell Aerospace US LLC
111 South 34th Street
Phoenix, AZ 85034
TYPE CERTIFICATE RECORD HOLDER: Honeywell International Inc.
111 South 34th Street
Phoenix, AZ 85034
Page No. 1 2 3 4 5
Rev. No. 2 2 -- 1 1
I. MODELS HTS900-21D
TYPE Free turbine turboshaft engine; two-stage centrifugal
compressor; reverse-flow annular combustor; single-stage
gas producer turbine; single-stage power turbine; front-
mounted accessory/reduction gearbox.
RATINGS (See NOTE 1)
Maximum Continuous
Output shaft horsepower, SHP
Output shaft speed, rpm
Takeoff (5 minute)
Output shaft horsepower, SHP
Output shaft speed, rpm
757
6,317
820
6317
REDUCTION GEAR RATIO
(Output shaft speed to power turbine
speed)
0.1654
LEGEND: “- -“ INDICATES “SAME AS PRECEDING MODEL”
“---“ INDICATES “DOES NOT APPLY”
NOTICE: SIGNIFICANT CHANGES ARE BLACK LINED IN THE LEFT MARGIN
E00013LA 2
CONTROL SYSTEM The full-authority digital engine control (FADEC)
system features a dual-channel electronic control
unit (ECU) with an electromechanical manual
mode backup, a fuel metering unit (FMU),
harnesses, and sensors. Engine operation and
condition are monitored through speed sensors
mounted on the accessory/reduction gearbox,
twelve measured gas temperature (MGT)
thermocouples located between the gas producer
turbine and the power turbine, and a
hydromechanical torquemeter internal to the
gearbox.
FUEL Refer to the engine installation manual for
approved fuel types, limitations on their use and
approved fuel additives. (see NOTE 11)
OIL Refer to the engine installation manual for
approved oil types and brands. Installation of the
engine must include a full flow scavenge oil
strainer and chip detector. (see NOTE 11)
PRINCIPAL DIMENSIONS &
C.G. LOCATION
Refer to engine installation manual. (see NOTE
11)
WEIGHT (Dry), lb.
(Includes standard equipment listed in
the engine installation manual)
338
CERTIFICATION BASIS: Title 14 Code of Federal Regulations (CFR) part 33 effective
February 1, 1965, as amended by 33-1 through 33-20, effective December 13, 2000.
MODEL APPLICATION DATE TYPE CERTIFICATE
ISSUED / AMENDED
HTS900-2-1D November 17, 2005 December 23, 2008
PRODUCTION BASIS: Production Certificate No. 413NM, reissued on March 29, 2026, to
Honeywell Aerospace US LLC
NOTE 1: Engine ratings are based on calibrated stand performance under the following
conditions:
Static sea level conditions at 59 °F and 29.92 in. Hg.
No inlet loss, bleed air extraction or customer power extraction.
Reference exhaust duct as specified in the engine installation manual
E00013LA 3
NOTE 2: Temperature Limits:
HTS900-2-1D
MEASURED GAS TEMPERATURE,
°F (°C) as transmitted by the FADEC
for display in the cockpit.
Maximum Continuous 1,652 (900)
Takeoff (5 minute) 1,757 (958)
Transient (15 seconds) 1,790 (977)
Starting 1,790 (977)
OIL TEMPERATURE, °F (°C)
measured at oil temperature bulb.
Minimum for engine starting Refer to engine installation manual
Minimum for operation above ground
idle
50 (10)
Minimum for operation above flight
idle
150 (66)
Maximum 230 (110)
FUEL TEMPERATURE Refer to engine installation manual for starting
and operating fuel inlet temperature limitations.
(see NOTE 11)
COMPONENT TEMPERATURE Refer to the installation manual for external
component temperature limits. (see NOTE 11)
NOTE 3: Operating Speed Limits:
HTS900-2-1D
GAS PRODUCER SPEED, rpm as
transmitted by the FADEC for display
in the cockpit
(100% = 47,870 rpm)
Maximum Continuous 48,410
Takeoff (5 minute) 49,570
Transient (15 seconds) 49,980
OUTPUT SHAFT SPEED, rpm as
transmitted by the FADEC for display
in the cockpit
(100% = 6,317 rpm)
Minimum governed speed 6,000
Maximum Continuous 6,633
Takeoff (5 minute) 6,633
Transient (15 seconds) 7,265
E00013LA 4
NOTE 4: Torque Limits:
NOTE 5: Fuel and Oil Pressure Limits:
NOTE 6:
Drive Pad Drive Type Speed Ratio
Rotating
(Facing
Pad)
Maximum
Continuous
Extraction
(7,000 rpm to
maximum pad
speed)
Maximum
Transient
Extraction (7,000
rpm to maximum
pad speed)
Maximum
Torque
During
Starts
Maximu
m Shear
Torque of
Mounted
Accessory
Starter/
generator
AND20001
XIA
(modified) *
0.2512 NG,
12,025 rpm
at 100%
CW 10.9 hp, except
above 20,000 ft.
altitude per
operating limits
in the engine
installation
manual
16.5 hp (2-min.)**
21.8 hp (5-sec.)**
500 in-lbf 1,100 in-
lbf
Auxiliary
generator /
alternator
AND20002
XIIA
(modified)*
0.3265 NP,
12,472 rpm
at 100%
CW 10.9 hp 16.5 hp (2-min.)
21.8 hp (5-sec.)
N/A 1,100 in-
lbf
HTS900-2-1D
OUTPUT SHAFT TORQUE, lb-ft as
transmitted by the FADEC for display
in the cockpit
(100% = 629 lb-ft)
Maximum Continuous 629
Takeoff (5 minute) 682
Transient (15 seconds) 760
HTS900-2-1D
FUEL INLET PRESSURE Minimum fuel inlet pressure limits vary with
fuel type, temperature and ambient conditions.
Refer to the engine installation manual (see
NOTE 11).
Maximum (psig) 50
OIL PRESSURE Oil pressure limits vary with gas producer
speed (NG) and oil temperature. Refer to the
engine installation manual (see NOTE 11).
E00013LA 5
CW = Clockwise NG = Gas producer speed NP = Power turbine speed
* Limit pad speed and maximum loads modified. Refer to specification AND20001 Rev. 2, Drive – Type XI Engine Accessory,
controlled by Army – Aviation Missile Command, and specification AND20002 Rev. 3, Drive – Type XII Engine Accessory,
controlled by Air Force Material Command Logistics Support. Engine installation manual includes drive pad mounting limits and
pad definition. (see NOTE 11)
** Engine operation with starter/generator pad power extraction in excess of the maximum continuous value has not been verified
to be surge free.
NOTE 7: Maximum permissible bleed air extraction at the customer bleed port is 5% of
inlet airflow.
NOTE 8: The engine complies with induction system icing and the ice ingestion
requirements of 14 CFR §§ 33.68 and 33.77, provided that the applicable
airframe inlet screens, filters, particle separators, and bypass systems are sized to
prevent the passage of objects greater than 0.50 inch diameter. Details of the ice
ingestion limits based on engine type certification testing are defined in the engine
installation manual. (see NOTE 11)
NOTE 9: Certain engine parts are life-limited, and the limits are included in the engine
Light Maintenance Manual, Airworthiness Limitations Section.
NOTE 10: Recommended engine inspection intervals are included in the engine Light
Maintenance Manual.
NOTE 11: For additional performance, authorized operation and detailed installation
information, refer to the FAA approved sections of the engine installation manual
as follows:
Models Engine Installation Manual
HTS900-2-1D IM-8028
NOTE 12: Deleted (Rev 1)
NOTE 13: As provided for 14 CFR §§ 33.76, 33.78, the engine has not been tested to
evaluate the effects of bird and hailstone ingestion. The bird and hailstone
ingestion characteristics of the airframe air inlet and engine combination are to be
evaluated prior to approval of the engine installation.
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