# TCDS E7NE: Intermountain Turbine Services Inc.

- Type: Type certificate data sheet
- Status: Current
- Holder: Intermountain Turbine Services Inc.
- Revision: 9
- Revised: June 9, 2023
- Product: Engine
- Certification basis: Part 33
- Registered aircraft: 2, by the registry models matched to it (OpenAirDocs)
- Data sheet PDF: https://openairdocs.org/files/sha256/75/9a/759a4433ccd5f91516aea6a5a81b5eae6258f0cd6a1a35bfbc2ef281889dba48
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID124447009820231129203732.0001
- Page: https://openairdocs.org/tcds/E7NE

## Models (4)

As the data sheet lists them.

- LTP 101-600A
- LTP 101-600A-1A
- LTP 101-600
- LTP 101-700A-1A

## 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 
 
 
TYPE CERTIFICATE DATA SHEET NO. E7NE 
 
Engines of models described herein conforming with this data sheet (which is part of Type Certificate No. E7NE) 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: Intermountain Turbine Services, Inc. 
270 South 1060 West 
Lindon UT, 84042 
 
 
 Type Certificate Holder Record:           Honeywell International, Inc. transferred TC E7NE to  
Intermountain Turbine Services, Inc. on June 9, 2023. 
 
TYPE 
 
LTP101-600 Axial-centrifugal flow free turbine turboprop. Single stage axial and single stage centri-fugal compressor. Reverse 
flow annular combustor. Single stage gas generator turbine. Single stage power turbine. 
 
LTP101-600A Identical to LTP101-600 except for customer accessory drive and configuration. Reference Installation Drawing 
No. 4-003-001-01, Sheet 9 of 11. 
 
LTP101-600A-1A  Identical to -600A, except for improved gas producer turbine wheel. 
LTP101-700A-1A Similar to -600A-1A, except for higher mass flow compressor. 
 
* 
 
 
PAGE 1 2 3 4 5 6 7     
REV. 9 8 9 9 8 8 9    
 LEGEND: "- -" INDICATES "SAME AS PRECEDING MODEL" 
"---" INDICATES "DOES NOT APPLY" 
NOTICE: ALL PAGES ARE REFORMATED. SIGNIFICANT CHANGES, 
IF ANY, ARE BLACK LINED IN THE LEFT BORDER. 
E7NE 
Revision 9 
 
Intermountain 
Turbine Services, 
Inc. 
 
LTP101-600 
LTP101-600A 
LTP101-600A-1A 
LTP101-700A-1A 
 
June 9, 2023

I. MODELS: LTP101- 
600 
LTP101- 
600A 
LTP101- 
600A-1A 
LTP101- 
700A-1A 
Output shaft to power 
turbine speed ratio 
.052 - - - - - - 
RATINGS (See NOTE 1)     
Maximum continuous SHP 565 - - - - 637 
ESHP (See NOTE 2) 585 - - - - 665 
Output shaft speed, RPM  1924 - - - -  - - 
Measured gas temperature, oF 1365 - - 1380 - -  
Takeoff (5 minutes) SHP  599 - - - - 671 
ESHP (See NOTE 2) 620 - - - - 700

I. MODELS: LTP101-600 LTP101- 
600A 
LTP101- 
600A-1A 
LTP101- 
700A-1A 
Output shaft speed, RPM Measured 
gas temperature, oF 
1924 
1405 
- - 
- - 
1,440 
- - 
1,440 
- - 
Output shaft Flanged 4.250' bolt 
circle, 8 holes, .594" 
diameter (see applicable 
Installation Manual Fig. 
6.6) 
- - - - - - 
Control System Gas 
Producer Fuel 
Control 
 
Bendix DP- 
U1 
 
- - 
 
- - 
 
- - 
Flow Fence Actuator Bendix AV- 
P1 
- - - - - - 
Propeller 
Governor 
Woodward Constant 
Speed Propeller 
Governor P/N 8210 
- - - - - - 
Fuel (See NOTE 3) ASTM D1655-70, Jet 
A, Jet A1 & Jet B Mil- T- 
5624 Grades JP-4 and JP-5 
or equivalent 
- - - - - - 
Oil (See NOTE 4) Mil-L-7808 Mil- 
L-23699 
- - - - - - 
Weight (Dry lb. maximum) (Includes  
essential engine accessories, but 
excludes starter- 
generator) 
325 - - - - 330 
Principal Dimensions 
Length, in. Nominal 
Height, in. Nominal 
Width, in. Nominal 
 
36.8 
22.8 
23.3 
 
- - 
- - 
- - 
 
- - 
- - 
- - 
 
- - 
- - 
- - 
C.G. Location (dry weight) aft 
of centerline of 
lower mount pads, in. 
 
 
1.77 
 
 
- - 
 
 
- - 
 
 
- - 
below propeller 
centerline, in. 
 
3.073 
 
- - 
 
- - 
 
- - 
right of propeller 
centerline, looking aft, 
in. 
 
 
0.12 
 
 
- - 
 
 
- - 
 
 
- - 
Ignition System (28 
Volts D.C.) 
Ignition exciter unit, 
Bendix Corporation P/N 
10-371440-1, 
Simmonds Precision P/N 
42416, with separate spark 
plug leads to two shunted 
surface gap ignitor plugs. 
- - - - - -

Ignitor Plugs AC spark plug P/N 5611304 
or Unison, 
Ind. P/N 10-360840-1 
or Champion P/N 
FHE211-2, CH34016, 
and CH34016-1 or 
S.G.L. P/N 0270310 
- - - - - - 
 
 
CERTIFICATION BASIS 14 CFR part 33 effective February 1, 1965, including Amendments 33-1, 33-2, 33-3, 33-4, 33-5. 
 
 
MODEL 
APPLICATION 
DATE 
TYPE 
CERTIFICATE 
ISSUED / 
AMENDED 
LTP101-600 SEPT 18, 1974 JUL 16, 1976 
LTP101-600A JUN 16, 1976 JUL 16, 1976 
LTP101-600A-1 JUL 21, 1977 NOV 30, 1977 
LTP101-600A-1A JUL 21, 1977 NOV 30, 1977 
LTP101-600A-1B NOV 3, 1977 NOV 30, 1977 
LTP101-600A-1 CANCELED MAY 18, 1979 
LTP101-600A-1B CANCELED MAY 18, 1979 
LTP101-700A-1A NOV 14, 1977 JUL 11, 1980 
 
PRODUCTION BASIS NONE 
 
 
 
NOTE 1. Engine ratings are based on calibrated stand performance under the following conditions: 
 
Static sea level standard conditions at 59oF and 29.92 in Hg. No airbleed, no duct losses and no 
external power extraction. Exhaust configuration as specified in Figure 7 of the engine installation 
instructions, and having an area of 76 square inches. 
NOTE 2. Equivalent shaft horsepower (ESHP) is based on: 
ESHP - Jet Thrust, lb + SHP 
2.5 
 
NOTE 3. Engines will operate satisfactorily with fuel contaminated to the levels specified in Paragraph 4.4.3 of 
the engine installation instructions, provided the fuel is introduced to the engine through a filter 
satisfying the requirements of the subject paragraph. 
 
NOTE 4. Mixing of these oils is prohibited. 
 
NOTE 5. Maximum permissible gas generator operating speeds (RPM) are as follows: 
NOTES

LTP101-600 LTP101- 600A LTP101- 600A- 
1A 
LTP101- 
700A-1A 
Transient 49,545 - - 50,165 - -  
Takeoff 49,020 - - 49,399 48,968 
Maximum Continuous 48,349 - - 48,681 48,346 
 
NOTE 6. Maximum permissible output shaft torque limits (ft.-lb.) 
 
 LTP101-600 LTP101- 
600A 
LTP101- 
600A-1A 
LTP101- 
700A-1A 
Transient 1,687 - - - - 1,887 
Takeoff 1,634 - - - - 1,832 
Maximum Continuous 1,542 - - - - 1,739

NOTE 7. Maximum permissible output shaft speeds (RPM): 
 
 LTP101-600 LTP101- 
600A 
LTP101- 
600A-1A 
LTP101- 
700A-1A 
Transient 2,112 - - - - 2,032 
Takeoff 1,950 - - - - - - 
Maximum Continuous 1,950 - - - - 1,950 
 
 
NOTE 8. Maximum permissible temperatures: 
 
Measured exhaust gas temperature (oF) measured by eight thermocouples mounted in the combustor 
housing: 
 
 
 LTP101-600 LTP101- 
600A 
LTP101- 
600A-1A 
LTP101- 
700A-1A 
*Starting 1,650 - - - - - - 
*Transient 1,550 - - - - - - 
Takeoff 1,405 - - 1,440 - - 
Maximum Continuous 1,365 - - 1,405 - - 
 
*Time limit 12 seconds above 1470oF 
Component surface (oF), all models: 
Gas generator speed control 
Ignition Exciter box 
Inlet flow modulator 
Thermocouple harness 
Electrical harness 
Oil temperature (oF), all models: 
(as measured by engine oil temperature bulb) 
 
 
250 
250 
350 
350 
392 
 
210 
 
NOTE 9. Fuel and Oil Pressure Limits (all models): 
 
Fuel: 45 p.s.i.a. maximum 
15 p.s.i.a. minimum* 
 
*The engine is capable of operation to 14,000 feet pressure altitude under the 
following conditions: 
 
(a) Minimum fuel pressure: 4 p.s.i. below atmospheric to 8,000 feet. 3 p.s.i. 
below atmospheric from 8,000 feet to 14,000 feet. 
(b) Maximum fuel temperature of 130oF (55oC) at sea level and decreasing 
linearly to 100oF (43oC) at 14,000 feet. 
(c) A priming system may be required for engine starting. 
 
Oil: Flight Idle and below: 20 p.s.i.g., minimum 
Maximum Continuous: 100+5 p.s.i.g.

NOTE 10 Accessory Drive Provisions (all models): 
 
 
 Starter/Generator Overspeed Governor Propeller Governor Customer Accessory 
Gear Ratio .2512(1) .1157(2) .1157(2) .1157(2) 
(1) Speed - Times Gas Generator RPM (100% NG = 47,870 RPM). 
(2) Speed - Times Power Turbine RPM (100% Np = 37,000 RPM or 1,924 RPM output). 
 
 Starter/Generator Overspeed Governor Propeller Governor Customer Accessory 
Continuous Torque 
(in. - lb.) 
100 4.0 20 225 
Peak Torque 
During Starts (in.-lb.) 
500 - - - 
Rotation Facing 
Engine Pad 
CW CCW CW CCW 
 
NOTE 11. These engines meet FAA requirements for operation in icing conditions when the induction system 
conforms with the applicable Installation Instructions. 
 
NOTE 12. These engines have not been tested to evaluate the effects of bird and ice ball ingestion. The bird and 
ice ball ingestion characteristics of the airframe air inlet and engine combination are to be evaluated 
prior to the approval of the engine installation. 
 
NOTE 13. Maximum permissible air bleed extraction is 5% of inlet airflow at the designated customer bleed port 
at standard sea level static conditions. 
 
NOTE 14. Engine starting torque and speed requirements are as shown in Figure 8 of the applicable Installation 
Instructions. 
 
NOTE 15. These engines may use approved type fuels separately or mixed in any proportion. Fuel control 
adjustments are not required when switching fuel types. Phillips PFA-55MB anti-icing additive at a 
concentration not in excess of 0.15% by volume is approved for use in fuels for these engines. 
 
NOTE 16. Fuel venting emission control is not included on these engines and therefore airframe compliance must 
be provided in accordance with SFAR-27. 
 
NOTE 17. Certain engine parts are life limited. The limits are listed in FAA approved Service Bulletin No. 
LT101-71-00-0001 and LT101-71-00-0002. 
 
NOTE 18. Engine maintenance program requirements are defined in FAA approved Service Bulletin No. LT101-71- 
00-0001. 
 
NOTE 19. Deleted (Revision 8) 
 
….END….
```

## ADs (18, in force first)

- [AD 2011-08-06](https://openairdocs.org/ad/2011-08-06): Power turbine rotors · Honeywell International LTP 101-600A-1A, LTP 101-700A-1A, LTS101-600A-2 and 10 more. Effective May 17, 2011
- [AD 2009-24-12](https://openairdocs.org/ad/2009-24-12): Gas generator · Honeywell International LTP 101-600A-1A, LTP 101-700A-1A, LTS101-600A-2 and 12 more. Effective Jan 4, 2010
- [AD 2002-03-09 R1](https://openairdocs.org/ad/2002-03-09-R1): Impellers · Honeywell International LTP 101-600, LTP 101-600A, LTP 101-600A-1A and 14 more. Effective Mar 27, 2002
- [AD 2001-25-04](https://openairdocs.org/ad/2001-25-04): Fuel Controls · Honeywell International LTP 101-600A-1A, LTP 101-700A-1A, LTS101-600A-2 and 1 more. Effective Jan 23, 2002
- [AD 2001-22-07](https://openairdocs.org/ad/2001-22-07): Rigid Tube Fuel Manifold Assemblies · Honeywell International LTP 101-600, LTP 101-600A, LTP 101-600A-1A and 14 more. Effective Nov 30, 2001
- [AD 2001-17-15](https://openairdocs.org/ad/2001-17-15): Engine Fuel Pumps · Honeywell International LTP 101-600A-1A, LTP 101-700A-1A, LTS101-600A-2 and 2 more. Effective Oct 1, 2001
- [AD 96-12-27](https://openairdocs.org/ad/96-12-27): Gas Generator Turbine Disk · Honeywell International LTP 101-600, LTP 101-600A, LTP 101-600A-1A and 21 more. Effective Aug 19, 1996
- [AD 96-12-05](https://openairdocs.org/ad/96-12-05): Turbine rotors · Honeywell International LTP 101-600, LTP 101-600A, LTP 101-600A-1A and 14 more. Effective Aug 12, 1996
- [AD 95-16-04](https://openairdocs.org/ad/95-16-04): Axial Compressor Rotors · Honeywell International LTP 101-600, LTP 101-600A, LTP 101-600A-1A and 21 more. Effective Oct 2, 1995
- [AD 94-18-06](https://openairdocs.org/ad/94-18-06): Bearings · Honeywell International LTP 101-600, LTP 101-600A, LTP 101-600A-1A and 21 more. Effective Sep 26, 1994
- [AD 93-13-11](https://openairdocs.org/ad/93-13-11): Gas Generator Turbine Rotor Disk · Honeywell International LTP 101-600, LTP 101-600A, LTP 101-600A-1A and 22 more. Effective Nov 8, 1993
- [AD 92-15-07](https://openairdocs.org/ad/92-15-07): Integrally Cast Power Turbine (PT) Rotor Blade · Honeywell International LTP 101-600, LTP 101-600A, LTP 101-600A-1A and 21 more. Effective Sep 2, 1992
- [AD 86-10-04](https://openairdocs.org/ad/86-10-04): Gas Producer (G.P.) Blade · Honeywell International LTP 101-600A-1A, LTP 101-700A-1A, LTS101-600A-2 and 11 more. Effective May 16, 1986
- [AD 79-06-06 R2](https://openairdocs.org/ad/79-06-06-R2): Lubrication System Contamination · Honeywell International LTP 101-600, LTP 101-600A, LTS101-600A and 3 more. Effective Jun 2, 1980
- [AD 79-20-03](https://openairdocs.org/ad/79-20-03): Fuel Control, Fuel Pump And Oil Pump Drive Gears · Honeywell International LTP 101-600, LTP 101-600A, LTP 101-600A-1A and 5 more. Effective Sep 26, 1979
- [AD 82-20-51](https://openairdocs.org/ad/82-20-51): N2 Accessory Idler Gear Assembly · Honeywell International LTP 101-600, LTP 101-600A, LTP 101-600A-1A and 1 more
- [AD 2002-03-09](https://openairdocs.org/ad/2002-03-09) (historical): Impellers · Honeywell International LTP 101-600, LTP 101-600A, LTP 101-600A-1A and 2 more. Effective Mar 27, 2002
- [AD 95-09-02](https://openairdocs.org/ad/95-09-02) (historical): Fuel Pumps · Honeywell International LTP 101-600, LTP 101-600A, LTP 101-600A-1A and 12 more. Effective May 10, 1995

## Registered aircraft by registry model (OpenAirDocs)

- [Lycoming LTP-101-600](https://openairdocs.org/engine/lycoming-ltp-101-600): 1 aircraft (registry code 41565)
- [Lycoming LTP101-600A](https://openairdocs.org/engine/lycoming-ltp101-600a): 1 aircraft (registry code 41566)
- [Alliedsign LTP101-600](https://openairdocs.org/engine/alliedsign-ltp101-600): 0 aircraft (registry code 02628)
- [Alliedsign LTP101-600A](https://openairdocs.org/engine/alliedsign-ltp101-600a): 0 aircraft (registry code 02629)
- [Alliedsign LTP101-600A1A](https://openairdocs.org/engine/alliedsign-ltp101-600a1a): 0 aircraft (registry code 02630)
- [Alliedsign LTP101-700A1A](https://openairdocs.org/engine/alliedsign-ltp101-700a1a): 0 aircraft (registry code 02631)
- [Honeywell LTP101-600](https://openairdocs.org/engine/honeywell-ltp101-600): 0 aircraft (registry code 33853)
- [Honeywell LTP101-600A](https://openairdocs.org/engine/honeywell-ltp101-600a): 0 aircraft (registry code 33854)
- [Honeywell LTP101-600A1A](https://openairdocs.org/engine/honeywell-ltp101-600a1a): 0 aircraft (registry code 33855)
- [Honeywell LTP101-700A1A](https://openairdocs.org/engine/honeywell-ltp101-700a1a): 0 aircraft (registry code 33856)
- [Lycoming LTP101-600A1A](https://openairdocs.org/engine/lycoming-ltp101-600a1a): 0 aircraft (registry code 41611)
- [Lycoming LTP101-700A1A](https://openairdocs.org/engine/lycoming-ltp101-700a1a): 0 aircraft (registry code 41612)

---
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