# TCDS E2WE: Honeywell Aerospace US LLC

- Type: Type certificate data sheet
- Status: Current
- Holder: Honeywell Aerospace US LLC
- Revision: 9
- Revised: March 27, 2026
- Product: Engine
- Certification basis: CAR 13
- Registered aircraft: 1, by the registry models matched to it (OpenAirDocs)
- Data sheet PDF: https://openairdocs.org/files/sha256/3c/04/3c0434856ca914e5c79be9f1768ab4f4fadaed6bb0f856ac962d0af35dad8873
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID146363265120260605174623.0001
- Page: https://openairdocs.org/tcds/E2WE

## Models (27)

As the data sheet lists them.

- TPE331-25DB
- TPE331-57-B
- TPE331-43
- TPE331-25FA
- TPE331-61-A
- TPE331-47
- TPE331-55
- TPE331-51
- TPE331-25F
- TPE331-47-B
- TPE331-43-A
- TPE331-43-B
- TPE331-45
- TPE331-25AA
- TPE331-25B
- TPE331-25AB
- TPE331-55-B
- TPE331-29A
- TPE331-57
- TPE331-55-A
- TPE331-47-A
- TPE331-25C
- TPE331-25E
- TPE331-25DA
- TPE331-25D
- TPE331-61
- TPE331-25A

## What the data sheet says

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

```text
DEPARTMENT OF TRANSPORTATION 
FEDERAL AVIATION ADMINISTRATION 
E2WE 
Revision 9 
H
oneywell Aerospace US LLC 
(AlliedSignal 
Garrett AirResearch) 
TPE331-25A, -25AA, -25AB, 
-25B, -25C, -25D,
-25DA, -25DB, -25E,
-25F, -25FA, -
25FB29A TPE33l-43, -43-A, 
 -43-B, -45,
-
47, -47-A, -47-B, -49, -51, 
-55, -55-A, -55-B, -57, -
57A,  
-57-B, -61, 61-A, -61-B, -71 
March 27, 2026 
TY
PE CERTIFICATE DATA SHEET NO. E2WE 
E
ngines of models described herein conforming with this data sheet (which is pa1t of Type Ce1tificate No. 
E2WE) and other approved data on file with the Federal Aviation Administration (FAA) meet the minimum 
standards for use in certified aircraft in accordance with pe1tinent aircraft data sheets and applicable portions 
of the Civil Air Regulations provided they are installed, operated, and maintained as prescribed  by the 
approved manufacturer's manuals and other approved instructions. 
TY
PE CERTIFICATE HOLDER:  Honeywell Aerospace US LLC 
 111 South 34th Street 
 Phoenix, AZ 85034 
TY
PE CERTIFICATE HOLDER RECORD: Honeywell International Inc. 
 111 South 34th Street 
 Phoenix, AZ 85034 
Mo
del: TPE331-25A, -25AA, -25AB,   TPE331-43, -43-A, -43-B, -45, -47, 
- 25B, -25C, -25D, -25DA, -25DB, -47-A, -47-B, -49, -51, -55, -55-A,
-25E, -25F, -25FA, -25FB, -29A -55B, -57, -57-A, -57-B, -61, -61-A, -61-B, -71
Ra
tings (see Note 3) 
 Maximum continuous SHP  500 
 ESHP  529 (see Note 4) 
 
 Output Shaft speed     RPM         2000 
 Exhaust gas temperature ºF (ºC)  995 (535) 
 Takeoff (5 minutes)   SHP         575 
Page No. 1 2 3 4 5 
Rev. No. 9 9 9 9 9

E2WE 2 of 5 
   
Exhaust gas temperature °F (0C) 1060 (571) 1070 (577) 
Gearbox power limit while not   
exceeding exhaust gas temperature   
limits:   
Continuous operation 
Ram takeoff conditions (5 minutes) 
1313lb-ft 
1707 lb-ft 
1392 lb-ft 
 
Model (See Note 5) TPE331-25A, -25AA, -25AB, 
-25B, -25C, -25D, -25DA, -25DB, 
 TPE33l-43, -43-A, -43-B, -45, -47, 
-47-A, -47-B, -49, -51, -55, -55-A, 
 -25E, -25F, -25FA, -25FB, -29A -55-B, -57, -57-A, -57-B, -61, -61-A, -61-B, -71 
Principal dimensions of basic engine 
Length, Inches 
 
 
46.01 
 
 
46.01 
Width, Inches 20.18 - 21.32 20.79 - 21.02 
Height, Inches 24.71 - 26.6 26.6 
C.G. location, inches aft of gearbox 
rear face 
 
7.1 
 
7.1 
C.G. location, inches above engine 
rotor center line 
 
2.66 - 2.78 
 
2.66 - 3.04 
C.G. location, inches to the right of 
vertical center line when looking into 
exhaust 
 
 
0.36 - 0.44 
 
 
0.25 - 0.36 
Weight, d1y, lbs. 335 335 
                         Basic engine includes fuel pumps 
                         And filters, fuel control unit; fuel shutoff 
                         Valve; ignition system excluding power 
                         Source; propeller flange; propeller-tube 
                         oil transfer; exhaust thermocouples and 
                         harness; lubrication system exclusive of 
                         optional oil tank with integral oil-to-fuel 
                         heat exchanger and lines shrouding; torque 
                         sensor; and engine inlet anti-icing system, 
                         valve, electrical harness and plumbing lines.  
 
Propeller-shaft to engine-rotor ratio  1:20.865 
 
Fuel  Aviation turbine fuels conforming to ASTM D1655 grades Jet A and Jet A-
1; ASTM D6615 grade Jet B; Military Fuels MIL-DTL-5624 grades JP-4 
and JP-5;  MIL-F-5616-1 grade JP-1; MIL-G-5572 Aviation Gasoline 
Grade 80/87 not in excess of 1,000 gallons per 100 hours of engine 
operation may be used for emergency fuel operation. 
  
Oil   Oils conforming to Honeywell Aerospace US LLC, Specification 
EMS53110 (Type I and Type II) are approved. 
 
Ignition System   Honeywell Aerospace US, LLC (Scintilla or General Laboratory 
Associates) 369913 high-voltage capacitor-discharge type and two and two 
ignitor plugs, Honeywell Aerospace (Champion Spark Plug Co. or A.C. 
Spark Plug Co.) 369812 or (AC Spark Plug Co.) 369949. 
 
Certification Basis  CAR 13 in effect on August 30, 1963, the date of application for Type 
Certificate. Type Certificate Number E2WE issued February 25, 1965.

E2WE 3 of 5 
P
roduction Basis 
Control System 
Production Certificate Number 413 issued March 4, 1965. Reissued as 
Production Certificate Number 413NM to Honeywell Aerospace US LLC 
on March 29, 2026. 
The following basic control accessories are selected for combability with 
the propeller choice. The propeller selected for use with the engine must 
have functional characteristics that are compatible with the engine and with 
the control-system accessories.  
F
uel Control   865420 or 893000 
Fuel Pump Assembly  868531 
Propeller Governor  865423 or 867374 or 869132 
Propeller Pitch Control 867330 or 867390 
Propeller Tube 866533 or 866678 
N
OTE 1:       Maximum permissible temperature: 
TPE331-25A, -25AA, -25AB,   TPE331-43, -43-A, -43-B, -45, -47, 
- 25B, -25C, -25D, -25DA, -25DB, -47-A, -47-B, -49, -51, -55, -55-A,
-25E, -25F, -25FA, -25FB, -29A -55B, -57, -57-A, -57-B, -61, -61-A, -61-B, -71
 E xhaust gas temperature 
  Maximum continuous 995ºF (535ºC) 1026ºF (ºC) 
  Takeoff (5 minutes)  1060ºF (571ºC)  1070ºF (ºC) 
 The above takeoff and maximum continuous exhaust gas temperatures 
are for ARDC Model Atmosphere, Standard sea-level day static 
conditions. To maintain constant turbine inlet temperature, exhaust gas 
temperature will vary as a function of ambient conditions. Consult the 
manufacture’s operation manual for other than standard sea-level day 
operations. 
 Starting Not to exceed 1500ºF (815ºC) for one second 
 Oil inlet temperature Minus 40ºF (minus 40ºC) to 260ºF (127ºC) MIL-PRF-23699 
Minus 40ºF (minus 40ºC) to 200ºF (93ºC)   MIL-PRF-7808 
 Ambient air temperature Minus 65ºF (minus 54ºC) to 125ºF (52ºC) 
 External engine component Ignition lead 500ºF (260ºC) 
Igniter Plugs 550ºF (288ºC) 
Thermocouple harness 850ºF (454ºC) 
Fuel Shutoff Valve 250ºF (121ºC) 
Fuel Control Assembly 265ºF (130ºC) 
 Engine zones Zone 1 (forward of the fire-shield adapter) 200ºF (93ºC) 
Zone 2 (Aft of the fire-shield adapter up to the turbine exhaust-diffuser 
split line) 450ºF (232ºC) 
N
OTE 2:       Pressure limits: 
 Inlet air pressure Sea level to 30,000 feet altitude 
 With fuel conforming to  Minus 3.0 PSIG at altitudes up to 15,000 feet; and 5 PSIG above true 
 Those specified above, vapor pressure, or that which will maintain the vapor-liquid ratio  
 fuel pressure at inlet  between 0 and 0.45 for altitudes of 15,000 feet and above. The inlet  
 connection to the engine. fuel pressure at all altitudes shall not exceed 50 PSIG maximum.

E2WE 4 of 5 
 O il pressure at inlet  Not to exceed a 12-inch negative head. 
 connection to the engine 
 O
il operating pressure  70 to 120 PSIG 
N
OTE 3:       The engine ratings are based on: Dynamometer operation at ARDC Model Atmosphere, sea level static 
conditions. Compressor Inlet Air (Dry) 59ºF (15ºC), 29.92 in Hg. MIL-
DTL-5624, Grade JP-4, fuel with lower heating value of 18,400 Btu per 
pound and MIL-PRF-23699 (WEP)-2 type oil, Mobil Oil Jet II. No 
bleed -air extraction, no anti-icing airflow, and no external accessory 
loads. Zero inlet duct loss. Exhaust gas discharging to ambient static 
pressure through the turbine exhaust diffuser furnished with the engine. 
Measured exhaust-gas temperature as indicated by average of the 
exhaust gas temperature thermocouples. 
N
OTE 4:   Equivalent shaft horsepower (ESHP) is based on ESHP = Jet Thrust lb. 
  2.5 +SHP
N
OTE 5:  Accessory Drive Provisions:  
Nominal Use 
Type of 
Drive (one 
each) 
Speed 
Ratio 
to 
Engin
e 
Rotor 
R
otation⁴ 
Facing 
Drive 
Pad 
Maximum 
Torque 
Continuous 
(lb -in.) 
Maximum 
Torque 
Overload 
(lb -in.) 
Maximum 
Torque 
Static 
(lb -in.) 
Overhung 
Moment 
(lb -in.) 
Drive5
Speed 
(
rpm) 
Tachometer - 
Generator 
AND200051 
Type XV-B 0.100 
CW 
per AND 7 per AND - - 50 per AND 25 4,187 per AND 
Starter or 
starter 
generator 
AND200022 
Type XII-D 
(modified) 0.261 CW per AND 300 600 2,200 per AND 500 per AND 10,886 
Aircraft 
Accessory 
AND200013 
Type XI-B 
(modified) 0.096 CCW 250 per AND 375 Per AND 1,650 per AND 125 per AND 3,959 
Propeller 
governor 
AND200104 
Type XX-A 
(modified) 0.090 
CW 
per AND 125 per AD 188 Per AND 825 per AND 125 3,754 
Propeller 
Pitch Control 
Mounting pad provided. 
30 NONE 
 1Same as AND except as shown in the table and except for stud length 
2 Same as AND except as shown in the table and except that studs are rotated 30º from standard pad 
configuration. 
3 Same as AND except as shown in the table. 
4 CW = Clockwise; CCW = Counterclockwise. 
5 Drive speed at takeoff engine-rotor speed of 100 percent. 
N
OTE 6: Bleed-air extraction above ground idle is permissible up to 5 percent of compressor non-bleed airflow 
when the anti-icing system is not in use and up to 3 percent of compressor non-bleed airflow when the 
anti-icing system is in use. 
N
OTE 7: The maximum allowable propeller shaft speed is 2,100 RPM for a transient period not to exceed 5 
seconds. 
N
OTE 8: MIL-DTL-85470 jet fuel anti-icing additive is approved for use in fuels in amounts not to exceed 0.15 
percent volume.

E2WE 5 of 5 
NOTE 9: These engines meet FAA requirements for adequate turbine disc integrity and rotor blade containment 
and do not require external armoring. 
N
OTE 10: These engines meet FAA requirements for operation in icing conditions. 
N
OTE 11:  Propeller shaft is bolted-flange type with clockwise rotation when looking into turbine exhaust. 
N
OTE 12: Shell ASA-3 anti-static additive, or equivalent, in amounts to bring the fuel up to 300 conductivity 
units is permissible except that in no event shall the additive exceed l PPM. 
N
OTE 13: Engine with an "L" stamped after the Model Number (25AL) have the 75 percent low ground idle kit 
installed. This increased the weight of the engine 11oz. and does not change the C.G. Low ground 
idle kits should be installed on engine models as shown in the following chart: 
 
--
-----------------------END--------------------------- 
Engine Model Low Ground Idle Kit 
TPE331-25A, -25AA, -25AB 869063-1 
TPE-331-25D, -25DA, -25DB 869362-1 
TPE331-25F, -25FA, 25FB 869363-1 
TPE331-43, -43-A, 43-B 869361-1 
TPE331-47, -47-A, -47-B 869360-1 
TPE331-55, -55-A, -55-B 869743-1 
TPE331-57, -57-A, -57-B 869744-1 
TPE331-61, -61-A, -61-B 893152-1
```

## ADs (12, in force first)

- [AD 2018-17-15](https://openairdocs.org/ad/2018-17-15): Turbine Engine Combustion Section · Honeywell International TPE331-1, TPE331-10, TPE331-10AV and 39 more. Effective Oct 22, 2018
- [AD 2011-18-51 R1](https://openairdocs.org/ad/2011-18-51-R1): Main shaft bearing · Honeywell International TPE331-1, TPE331-10, TPE331-10A and 82 more. Effective Oct 19, 2011
- [AD 95-16-08](https://openairdocs.org/ad/95-16-08): Life Limited Turbine Components · Honeywell International TPE331-1, TPE331-10, TPE331-10A and 62 more. Effective Sep 5, 1995
- [AD 93-15-11](https://openairdocs.org/ad/93-15-11): Propeller Pitch Control (PPC) Gasket · Honeywell International TPE331-1, TPE331-10, TPE331-10A and 58 more. Effective Sep 7, 1993
- [AD 89-07-07 R1](https://openairdocs.org/ad/89-07-07-R1): Oil Scavenge Pump Assembly · Honeywell International TPE331-1, TPE331-10, TPE331-10R and 26 more. Effective Oct 30, 1989
- [AD 86-08-06 R1](https://openairdocs.org/ad/86-08-06-R1): Second Stage Turbine Rotor Assembly · Honeywell International TPE331-25AA, TPE331-25AB, TPE331-25DA and 7 more. Effective Dec 21, 1987
- [AD 84-10-06 R1](https://openairdocs.org/ad/84-10-06-R1): Fuel Pump Assemblies · Honeywell International TPE331-1, TPE331-10, TPE331-10B and 45 more. Effective Dec 26, 1984
- [AD 73-26-07 R3](https://openairdocs.org/ad/73-26-07-R3): Fuel Pump Shaft Internal Drive Splines · Honeywell International TPE331-1, TPE331-1U, TPE331-1UA and 39 more. Effective Jul 31, 1980
- [AD 71-05-07](https://openairdocs.org/ad/71-05-07): High Speed Pinion Assembly · Honeywell International TPE331-1, TPE331-1U, TPE331-1UA and 30 more. Effective Apr 8, 1972
- [AD 2018-02-14](https://openairdocs.org/ad/2018-02-14) (historical): Turbine Engine Combustion Section · Honeywell International TPE331-1, TPE331-10, TPE331-10AV and 38 more. Effective Feb 28, 2018
- [AD 2011-18-51](https://openairdocs.org/ad/2011-18-51) (historical): Main shaft bearing · Honeywell International TPE331-1, TPE331-10, TPE331-10A and 82 more
- [AD 90-21-01](https://openairdocs.org/ad/90-21-01) (historical): Third stage stator assembly · Honeywell International TPE331-1, TPE331-2, TPE331-2UA and 7 more

## Registered aircraft by registry model (OpenAirDocs)

- [Honeywell TPE331-51](https://openairdocs.org/engine/honeywell-tpe331-51): 1 aircraft (registry code 33945)
- [AiResearch TPE331-25A](https://openairdocs.org/engine/airesearch-tpe331-25a): 0 aircraft (registry code 01503)
- [AiResearch TPE331-25AA](https://openairdocs.org/engine/airesearch-tpe331-25aa): 0 aircraft (registry code 01504)
- [AiResearch TPE331-25AB](https://openairdocs.org/engine/airesearch-tpe331-25ab): 0 aircraft (registry code 01507)
- [AiResearch TPE331-25B](https://openairdocs.org/engine/airesearch-tpe331-25b): 0 aircraft (registry code 01509)
- [AiResearch TPE331-25C](https://openairdocs.org/engine/airesearch-tpe331-25c): 0 aircraft (registry code 01511)
- [AiResearch TPE331-25D](https://openairdocs.org/engine/airesearch-tpe331-25d): 0 aircraft (registry code 01513)
- [AiResearch TPE331-25DA](https://openairdocs.org/engine/airesearch-tpe331-25da): 0 aircraft (registry code 01516)
- [AiResearch TPE331-25DB](https://openairdocs.org/engine/airesearch-tpe331-25db): 0 aircraft (registry code 01519)
- [AiResearch TPE331-25E](https://openairdocs.org/engine/airesearch-tpe331-25e): 0 aircraft (registry code 01525)
- [AiResearch TPE331-25F](https://openairdocs.org/engine/airesearch-tpe331-25f): 0 aircraft (registry code 01526)
- [AiResearch TPE331-25FA](https://openairdocs.org/engine/airesearch-tpe331-25fa): 0 aircraft (registry code 01527)
- [AiResearch TPE331-29A](https://openairdocs.org/engine/airesearch-tpe331-29a): 0 aircraft (registry code 01528)
- [AiResearch TPE331-43](https://openairdocs.org/engine/airesearch-tpe331-43): 0 aircraft (registry code 01529)
- [AiResearch TPE331-43-A](https://openairdocs.org/engine/airesearch-tpe331-43-a): 0 aircraft (registry code 01531)
- [AiResearch TPE331-43-B](https://openairdocs.org/engine/airesearch-tpe331-43-b): 0 aircraft (registry code 01532)
- [AiResearch TPE331-45](https://openairdocs.org/engine/airesearch-tpe331-45): 0 aircraft (registry code 01533)
- [AiResearch TPE331-47](https://openairdocs.org/engine/airesearch-tpe331-47): 0 aircraft (registry code 01534)
- [AiResearch TPE331-47-A](https://openairdocs.org/engine/airesearch-tpe331-47-a): 0 aircraft (registry code 01535)
- [AiResearch TPE331-47-B](https://openairdocs.org/engine/airesearch-tpe331-47-b): 0 aircraft (registry code 01536)
- [AiResearch TPE331-51](https://openairdocs.org/engine/airesearch-tpe331-51): 0 aircraft (registry code 01537)
- [AiResearch TPE331-55](https://openairdocs.org/engine/airesearch-tpe331-55): 0 aircraft (registry code 01538)
- [AiResearch TPE331-55-A](https://openairdocs.org/engine/airesearch-tpe331-55-a): 0 aircraft (registry code 01539)
- [AiResearch TPE331-55-B](https://openairdocs.org/engine/airesearch-tpe331-55-b): 0 aircraft (registry code 01540)
- [AiResearch TPE331-57](https://openairdocs.org/engine/airesearch-tpe331-57): 0 aircraft (registry code 01541)
- [AiResearch TPE331-57-B](https://openairdocs.org/engine/airesearch-tpe331-57-b): 0 aircraft (registry code 01542)
- [AiResearch TPE331-61](https://openairdocs.org/engine/airesearch-tpe331-61): 0 aircraft (registry code 01543)
- [AiResearch TPE331-61-A](https://openairdocs.org/engine/airesearch-tpe331-61-a): 0 aircraft (registry code 01544)
- [Allied Sig TPE331-47](https://openairdocs.org/engine/allied-sig-tpe331-47): 0 aircraft (registry code 02539)
- [Alliedsign TPE331-25A](https://openairdocs.org/engine/alliedsign-tpe331-25a): 0 aircraft (registry code 02523)
- [Alliedsign TPE331-25AA](https://openairdocs.org/engine/alliedsign-tpe331-25aa): 0 aircraft (registry code 02524)
- [Alliedsign TPE331-25AB](https://openairdocs.org/engine/alliedsign-tpe331-25ab): 0 aircraft (registry code 02525)
- [Alliedsign TPE331-25B](https://openairdocs.org/engine/alliedsign-tpe331-25b): 0 aircraft (registry code 02526)
- [Alliedsign TPE331-25C](https://openairdocs.org/engine/alliedsign-tpe331-25c): 0 aircraft (registry code 02527)
- [Alliedsign TPE331-25D](https://openairdocs.org/engine/alliedsign-tpe331-25d): 0 aircraft (registry code 02528)
- [Alliedsign TPE331-25DA](https://openairdocs.org/engine/alliedsign-tpe331-25da): 0 aircraft (registry code 02529)
- [Alliedsign TPE331-25DB](https://openairdocs.org/engine/alliedsign-tpe331-25db): 0 aircraft (registry code 02530)
- [Alliedsign TPE331-25E](https://openairdocs.org/engine/alliedsign-tpe331-25e): 0 aircraft (registry code 02531)
- [Alliedsign TPE331-25FA](https://openairdocs.org/engine/alliedsign-tpe331-25fa): 0 aircraft (registry codes 02532, 02533)
- [Alliedsign TPE331-29A](https://openairdocs.org/engine/alliedsign-tpe331-29a): 0 aircraft (registry code 02534)
- [Alliedsign TPE331-43](https://openairdocs.org/engine/alliedsign-tpe331-43): 0 aircraft (registry code 02535)
- [Alliedsign TPE331-43-A](https://openairdocs.org/engine/alliedsign-tpe331-43-a): 0 aircraft (registry code 02536)
- [Alliedsign TPE331-43-B](https://openairdocs.org/engine/alliedsign-tpe331-43-b): 0 aircraft (registry code 02537)
- [Alliedsign TPE331-45](https://openairdocs.org/engine/alliedsign-tpe331-45): 0 aircraft (registry code 02538)
- [Alliedsign TPE331-47-A](https://openairdocs.org/engine/alliedsign-tpe331-47-a): 0 aircraft (registry code 02540)
- [Alliedsign TPE331-47-B](https://openairdocs.org/engine/alliedsign-tpe331-47-b): 0 aircraft (registry code 02541)
- [Alliedsign TPE331-51](https://openairdocs.org/engine/alliedsign-tpe331-51): 0 aircraft (registry code 02542)
- [Alliedsign TPE331-55](https://openairdocs.org/engine/alliedsign-tpe331-55): 0 aircraft (registry code 02543)
- [Alliedsign TPE331-55-A](https://openairdocs.org/engine/alliedsign-tpe331-55-a): 0 aircraft (registry code 02544)
- [Alliedsign TPE331-55-B](https://openairdocs.org/engine/alliedsign-tpe331-55-b): 0 aircraft (registry code 02545)

All 105: https://openairdocs.org/tcds/E2WE/aircraft.md

## STCs approved under this data sheet (6)

- [STC SE7547SW](https://openairdocs.org/stc/SE7547SW): Install Garrett P/N 865558-16 or865558-1E propeller pitch control cam.. Peacock Joe N
- [STC SE33WE](https://openairdocs.org/stc/SE33WE): Modification of:  ( 1)  Manual	fuel valve and beta cams; (2) Fuel control linkage and propeller servo cam; and (3)Automatic control of bleed valve and engine starting functions; S/N P61801 only. Garrett Turbine Engine Company A Division of the Garrett Corporation
- [STC SE35WE](https://openairdocs.org/stc/SE35WE): Modification of the fuel control, linkage to permit 75% r.p.m. for low ground idle.. Garrett Turbine Engine Company 
Division of Garret Corporation
- [STC SE39WE](https://openairdocs.org/stc/SE39WE): Modification of the fuel control linkage to permit 75% r.p.m. for ground idle doe S/N 86001. Garrett Turbine Engine Company A Division of the Garrett Corporation
- [STC SE50WE](https://openairdocs.org/stc/SE50WE): One engine only.  Modification of a Model TPE331-25DAL to. incorporate the engine components associated with a torque and temperature 1imitinq system in accordance with AiResearch Kit PIN 896642-1. An en9ine incorporating this kit is reidentified as a Model TPE331-25DALT .. Garrett Turbine Engine Company Division of Garret Corporation
- [STC SE38WE](https://openairdocs.org/stc/SE38WE): Modification of fuel control linkage to permit operation of 75% idle speed. S/N 61701 & 61702. Garrett Turbine Engine Company 
Division of Garret Corporation

---
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