# TCDS E-253: Continental Aerospace Technologies, Inc.

- Type: Type certificate data sheet
- Status: Current
- Holder: Continental Aerospace Technologies, Inc.
- Revision: 21
- Revised: September 19, 2022
- Product: Engine
- Certification basis: CAR 13
- Registered aircraft: 8,517, by the registry models matched to it (OpenAirDocs)
- Data sheet PDF: https://openairdocs.org/files/sha256/6e/bd/6ebdced8b7a948b33a4ed32e8c58fbbe7ae072747e5d393d923d988f29ad8c0f
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/98F4F2811DB96F83862588C600693E46.0001
- Page: https://openairdocs.org/tcds/E-253

## Models (8)

As the data sheet lists them.

- C145-2
- O-300-A
- O-300-D
- O-300-C
- C145-2H
- O-300-B
- O-300-E
- C145-2HP

## What the data sheet says

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

```text
E-253 
Revision 21 
CONTINENTAL AEROSPACE TECHNOLOGIES, INC. 
C145-2, -2H, -2HP 
O-300-A, -B, -C, -D, -E 
September 19, 2022 
DEPARTMENT OF TRANSPORTATION 
FEDERAL AVIATION ADMINISTRATION 
 
 
TYPE CERTIFICATE DATA SHEET NO. E-253 
 
Engines of models described herein conforming with this data sheet (which is part of Type Certificate No. 253) and other 
approved data on file with the Federal Aviation Agency, meet the minimum standards for use in certificated aircraft in 
accordance with pertinent 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. 
Type Certificate Holder Continental Aerospace Technologies, Inc. (Continental®) 
2039 South Broad St. 
Mobile, Alabama 36615 
 
Type Certificate Holder Record Continental Motors, Inc. 
Company name change January 1, 2020 (Continental Aerospace Technologies, Inc.) 
 
Teledyne Continental Motors 
Ownership & name change as of April 19, 2011 (Continental Motors, Inc.) 
 
Model C145-2, -2H, -2HP O-300-A, -B, -C, -D, - 
E 
Type 6HOA - - - 
Rating, ICAO or ARDC standard atmosphere 
Max. continuous hp., rpm, full throttle 
at sea level pressure altitude 145-2700 - - - 
Takeoff hp., 5 min., r.p.m., full throttle at 
sea level pressure altitude 
Fuel (min. grade aviation gasoline) 
 
145-2700 
80/87, ASTM D7547 (UL91), ASTM D7547 
(UL94) 
 
- - - 
- - - 
Lubricating Oil   
Oil inlet temperature Oil grade  
Below 120° F. SAE 20 - - - 
Over 120° F. SAE 40 - - - 
Bore and stroke, in. 4.0625 x 3.875 - - - 
Displacement, cu. in. 301 - - - 
Compression ratio 7.0:1 - - - 
Weight (dry), lb. 268 - - - 
C.G. location   
(with accessories where eligible) 
Fwd. of mounting lug rear face, in. 
 
8.1 
 
- - - 
Below crankshaft, in. 1.6 - - - 
Propeller shaft, SAE No. See NOTE 7 - - - 
Carburetion Marvel-Schebler MA-3SPA - - - 
P/N 530490 
Ignition, dual, magnetos Continental SF6LN-12 or S6LN-21 or S6LSC-21 or J. I. 
Case Model 67 or Slick Electro 664; or 1 ea. Continental 
S6LN-200 or -204 
 
- - - 
Timing, °BTC Right 26, Left 28 - - - 
Spark plugs (See NOTE 8) - - - 
Oil sump capacity, qt. 8; 7.46 usable at 5° nose-up and - - - 
5.6 usable at 5° nose-down; 7.76 
usable at 10° nose-up and 3.77 usable 
at 10° nose-down attitudes 
NOTES 1,2,3,4,5,7,8 1,2,3,5,6,7,8 
"- - -" indicates "same as preceding model" 
 
Page No. 1 2 3 
Rev. No. 21 20 20

E-253 Page 2 
 
 
Certification Basis CAR 13 
Type Certificate No. 253 issued for C145-2 December 5, 1947; C145-2H added 
April 1, 1949; C145-2HP added January 27, 1953; O-300-A added May 12, 1954; O- 
300-B added September 27, 1955; O-300-C added February 24, 1959; O-300-D added 
June 1, 1960; O-300-E added April 3, 1963. 
 
Production Basis Production Certificates Nos. 7 and 508. 
 
NOTE 1. Maximum permissible cylinder head, barrel and oil inlet temperatures, 525°F, 290°F, and 225°F, 
respectively. 
Maximum oil inlet temperature limit is 240°F, when using Continental Spec. MHS-24 oil SAE No. 50 above 
40°F ambient and SAE No. 30 or 10W30 below 40°F ambient. Lubricating oils qualified under SAE-J1899 
or J1966 are considered qualified under Continental Spec MHS-24 
 
NOTE 2. Pressure limits for normal operation: 
Fuel at carburetor inlet: For pump system: 1½ to 6 p.s.i.g. 
For gravity system: Minimum 11 in. fuel head differential between 
carburetor fuel inlet fitting and float bowl chamber, 
maximum 6 p.s.i.g. 
 
Oil 30 to 40 p.s.i.g. 
 
NOTE 3. The following accessory drive or mounting provisions are available: 
 
 
Accessory 
 
Type of Drive 
 
Direction of 
Rotation* 
Speed Ratio 
to 
Crankshaft 
 
Max. Torque 
Cont. 
 
(in.-lb.) 
Static 
Maximum 
Overhang 
Moment (in.-lb.) 
Generator Automotive CC 2.035:1 60 600 100 
**  Starter Automotive C 35.77:1    
*** Starter Automatic C 24.727:1 
engagement 
**** Vacuum Pump  AND 20,000 
 
CC 
 
1.5451 
 
100 
 
800 
 
25 
Fuel Pump Automotive 
diaphragm 
***** Governor AND 20,010 
 0.500:1 
 
1:1 
 
 
29 
 
 
825 
 
 
50 
 
*  C - Clockwise viewing drive pad, CC - Counter Clockwise 
**  Delco-Remy gear reduction drive and starter eligible on all models except O-300-D and -E. 
*** Delco-Remy starter (Continental P/N 627842) with Continental adapter P/N 628158 eligible on Model 
O-300-D and -E only. 
****  Vacuum pump drive available on Model O-300-D and -E only. 
*****  Governor drive available on Model O-300-E only. 
 
NOTE 4. Model designation suffix “H” on model C145-2 denotes the incorporation of crankcase and crankshaft 
provisions for use of a hydraulically controllable propeller from the engine oil pressure. Model designation 
suffix “P” denotes engine eligible for pusher installation as permitted by a special crankcase and front main 
bearing. 
 
NOTE 5. C145 series engines equipped with dampered crankshafts are identified by suffix letter “D” following the 
engine serial number which denotes one each 5th and 6th order dampers. O-300 series engines are also 
equipped with crankshaft incorporating one each 5th and 6th order dampers. 
 
NOTE 6. O-300-A is similar to C145-2 except parts material and ignition component substitutions. O-300-B is similar 
to O-300-A except incorporates crankcase and crankshaft provisions for use of a hydraulically controllable 
propeller from the engine oil pressure. O-300-C is identical to O-300-A except for propeller flange provision 
as indicated. O-300-D is similar to O-300-C except for provisions for Continental right angle automatic 
engagement starter drive which incorporates a vacuum pump drive. O-300-E is similar to O-300-D except 
for incorporation of governor drive pad and crankshaft provisions to supply governor oil to propeller.

Page 3 E-253 
 
 
NOTE 7. Propeller shaft 
C145-2, -2H, -2HP; O-300-A, -B: SAE-AS127 No. 3 flange 
O-300 C, -D, -E: ARP502 Type I flange 4-7/8 in. o.d. by .31 in. thick with six ½ bolt 
holes in 4 in. diameter circle. O-300-E has provisions for transfer of 
governor oil to propeller. 
 
NOTE 8. The following spark plugs and/or those listed in Section 6-4.9 of the latest revision of M-0, Standard Practice 
Maintenance Manual, are approved on this engine: 
 
AC: HSR83IR, SR83IR, SR83P, HSR83P, A88, S88, S88D, HS88, SR88, HSR88, SR88D, 
Auto Lite: BR4, BR4S, BR4SB, H15, SH15, SH 15R, SH20A, SH150, SH200A 
BG: RB485S, RB919SR5, RB955S, 706, 706S 
Champion: C26S, RC26S, C27, C27S, REM38E, REM38P, REM38W, RHM38P, RHM38W, RED39N, 
REM39N, RHD39N, RHM39N, REM40E, RHM40E, D41N, ED41N, EM41N, M41N, M42E, 
E142E 
Red Seal: SA190, SE190, SJ190, SE230, SJ230 
 
 
 
 
....END....
```

## ADs (17, in force first)

- [AD 2023-17-04](https://openairdocs.org/ad/2023-17-04): Reciprocating Engine Oil System · F & M Enterprises' Model C6LC, C6LC-S or C6LC-L oil filter… (Stratus Tool Technologies STC SE09356SC or 2 others). Effective Oct 26, 2023
- [AD 2011-26-07](https://openairdocs.org/ad/2011-26-07): Engine · Continental Motors C-125-1, C-125-2, C145-2 and 48 more. Effective Jan 24, 2012
- [AD 98-17-11](https://openairdocs.org/ad/98-17-11): Crankshafts · Continental Motors A-65-3, A-65-8, A75-8 and 90 more. Effective Oct 19, 1998
- [AD 98-01-06](https://openairdocs.org/ad/98-01-06): Carburetors · Continental Motors A-65-1, A-65-12, A-65-12F and 184 more. Effective Feb 13, 1998
- [AD 94-05-05 R1](https://openairdocs.org/ad/94-05-05-R1): Cylinder Rocker · Continental Motors C-125-1, C-125-2, C145-2 and 59 more. Effective Feb 13, 1996
- [AD 95-21-15](https://openairdocs.org/ad/95-21-15): Aviation Gasoline · Continental Motors A-65-8, C85-12F, C85-12FJ and 77 more. Effective Nov 28, 1995
- [AD 93-19-04](https://openairdocs.org/ad/93-19-04): Carburetors · Continental Motors A-65-1, A-65-12, A-65-12F and 184 more. Effective Oct 18, 1993
- [AD 93-10-02](https://openairdocs.org/ad/93-10-02): Missing Cylinder Valve Retainer Key · Continental Motors GTSIO-520-C, GTSIO-520-D, GTSIO-520-E and 180 more. Effective Aug 12, 1993
- [AD 93-11-03](https://openairdocs.org/ad/93-11-03): Incorrect Connecting Rod · Continental Motors O-200-A, O-300-A, O-300-C and 1 more. Effective Jul 13, 1993
- [AD 80-06-05](https://openairdocs.org/ad/80-06-05): Magnetos · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 254 more. Effective Mar 28, 1980
- [AD 69-24-03](https://openairdocs.org/ad/69-24-03): Carburetors · Continental Motors A-65-1, A-65-12, A-65-12F and 321 more. Effective Nov 29, 1969
- [AD 49-50-01](https://openairdocs.org/ad/49-50-01): Generator Drive Coupling Rubber Disc · Continental Motors C-125-1, C-125-2, C145-2 and 27 more
- [AD 50-20-01](https://openairdocs.org/ad/50-20-01): Crankcase · Continental Motors C145-2 and C145-2H
- [AD 2022-04-04](https://openairdocs.org/ad/2022-04-04) (historical): Reciprocating Engine Oil System · F & M Enterprises' Model C6LC, C6LC-S or C6LC-L oil filter… (Stratus Tool Technologies STC SE09356SC or 2 others). Effective Mar 29, 2022
- [AD 2002-13-04](https://openairdocs.org/ad/2002-13-04) (historical): Magneto impulse coupling stop pin · Teledyne Continental Motors C-125-1, C-125-2, C145-2 and 48 more. Effective Jul 12, 2002
- [AD 2000-11-51](https://openairdocs.org/ad/2000-11-51) (historical): Magnetos · Teledyne Continental Motors IO-360 Series (all), LTSIO-520-AE, O-300-A and 21 more
- [AD 94-14-12](https://openairdocs.org/ad/94-14-12) (historical): Octane Aviation Gasoline · Teledyne Continental Motors A-65-8, C85-12, E185-11 and 68 more

## Registered aircraft by registry model (OpenAirDocs)

- [Continental 0-300 series](https://openairdocs.org/engine/continental-0-300-series): 6,622 aircraft (registry code 17022)
- [Continental C145 series](https://openairdocs.org/engine/continental-c145-series): 1,828 aircraft (registry code 17012)
- [Continental 0-300-D](https://openairdocs.org/engine/continental-0-300-d): 31 aircraft (registry code 17176)
- [Continental 0-300-A](https://openairdocs.org/engine/continental-0-300-a): 15 aircraft (registry code 17173)
- [Continental C145-2](https://openairdocs.org/engine/continental-c145-2): 11 aircraft (registry code 17170)
- [Continental 0-300-C](https://openairdocs.org/engine/continental-0-300-c): 4 aircraft (registry code 17175)
- [Rolls-Royce 0-300](https://openairdocs.org/engine/rolls-royce-0-300-series): 3 aircraft (registry code 54512)
- [Continental 0-300-B](https://openairdocs.org/engine/continental-0-300-b): 2 aircraft (registry code 17174)
- [Continental C145-2H](https://openairdocs.org/engine/continental-c145-2h): 1 aircraft (registry code 17171)
- [Continental 0-300-E](https://openairdocs.org/engine/continental-0-300-e): 0 aircraft (registry code 17178)
- [Continental C145-2HP](https://openairdocs.org/engine/continental-c145-2hp): 0 aircraft (registry code 17172)

## STCs approved under this data sheet (40)

- [STC SE04651CH](https://openairdocs.org/stc/SE04651CH): To allow use of l00R grade aviation fuel meeting Swift Fuel, LLC specification SPEC-l00R-22. Swift Fuels LLC
- [STC SE2932SW](https://openairdocs.org/stc/SE2932SW): Install carburetor air temperature indicator. Approved for Aircooled Motors (Franklin Engine Co.) equipped with float carburetors. Model eligibility included here may not be inclusive.. Alcor LLC
- [STC SE208SO](https://openairdocs.org/stc/SE208SO): Installation of ice indicator in the carburetor.. LegacySTC.com
- [STC SE04349CH](https://openairdocs.org/stc/SE04349CH): Installation of SureFly electronic ignition. SureFly Partners Ltd.
- [STC SE00145WI](https://openairdocs.org/stc/SE00145WI): Installation of B&C Specialty Products Model BC 320-( ) Engine Starter.. B & C Specialty Products Inc.
- [STC SE03309CH](https://openairdocs.org/stc/SE03309CH): Installation of Engine Preheat Kit, p/n TSP6CYL-2927-115 for 115 volt application. Hartzell Propeller Inc.
- [STC SE04577CH](https://openairdocs.org/stc/SE04577CH): Install an electronic engine ignition system. Electroair Acquisition Corp
- [STC SE01966WI](https://openairdocs.org/stc/SE01966WI): Use of GAMI G100UL High Octane Unleaded Avgas in spark ignition piston aircraft engines. General Aviation Modifications Inc.
- [STC SE00533SE](https://openairdocs.org/stc/SE00533SE): Installation of Real Gasket Corporation Continental Engine Pushrod Tube Modification.. Real Gaskets Tennessee
- [STC SE4725NM](https://openairdocs.org/stc/SE4725NM): Installation of an O-3000-A crankshaft, P/N 530860, equipped with an O-3000-D cluster fear, P/N 627846, in an O-3000-D engine.. General Aviation Concepts
- [STC SE8409SW](https://openairdocs.org/stc/SE8409SW): Installation of P/N CO-300-1 Oil Filter Adaptor with spin-on filter as a replacement for the existing oil screen. Stratus Tool Technologies LLC
- [STC SE10076SC](https://openairdocs.org/stc/SE10076SC): Modify engine by installation of C12ST2/S starter.. Hartzell Engine Technologies, LLC
- [STC SE10129SC](https://openairdocs.org/stc/SE10129SC): Installation of rotocoil, valve springs, ni-resist valve guide, exhaust valve with chrome flash on stem, and rocker shaft with thrust buttons.. Continental Motors, Inc.
- [STC SE34WE](https://openairdocs.org/stc/SE34WE): Installation of Electro-Coatings, Inc., piston rings on Continental pistons.. Continental Motors, Inc.
- [STC SE8112SW](https://openairdocs.org/stc/SE8112SW): Installation of any or all parts identified by Parts Application List AEC9109-2.. Continental Motors, Inc.
- [STC SE8776SW](https://openairdocs.org/stc/SE8776SW): Installation of coated cylinders and piston rings.. Continental Motors, Inc.
- [STC SE3330NM](https://openairdocs.org/stc/SE3330NM): Continental valve cover gasket. Real Gaskets Tennessee
- [STC SE1220GL](https://openairdocs.org/stc/SE1220GL): Replacement of Slick Model 664 magnetos with Slick Model 6264 magnetos or installation of Model 6364 magneto.. Champion Aerospace LLC
- [STC SE09846SC](https://openairdocs.org/stc/SE09846SC): Installation of S539800M30 starter adapter springs.. Aircraft Specialties Services Inc
- [STC SE1780NM](https://openairdocs.org/stc/SE1780NM): Installation of Precise Flight standby vacuum system (SVS III).. Precise Flight Inc
- [STC SE01943CH](https://openairdocs.org/stc/SE01943CH): Add the following approved fuels:  unleaded automotive gasoline 87 minimum antiknock index, per ASTM Specification D-439 or D-4814 of any volatility class, A through E, or 82UL AVGAS per ASTM D-6227.. Experimental Aircraft Association Inc.
- [STC SE693GL](https://openairdocs.org/stc/SE693GL): Superseded by STC SE01943CH.  Add the following approved fuel: unleaded automotive gasoline, 87 minimum antiknock index.. EAA Aviation Foundation
- [STC SE5743NM](https://openairdocs.org/stc/SE5743NM): Intallation of adapter for externally mounted oil filter.. Aviation Development Corporation
- [STC ST00435AT](https://openairdocs.org/stc/ST00435AT): Overhaul/repair of the Delco starter adapter drive (P/N 1971890) used with Delco starters P/N's 11096656 and 1109660.. Aerotech
- [STC SE09513SC](https://openairdocs.org/stc/SE09513SC): Installation and usage of Exxon 20W50 Multigrade aircraft engine oil conforming to Exxon Oil Formulation WS-3013.. Exxon Company USA
- [STC SE1-201](https://openairdocs.org/stc/SE1-201): Installation of the Richter Aero Equipment Type B-4 or B-5 Temperature Probe. (O-360 SERIES (excl. A1C, C2B, C2D)). MidContinent Instru Co Inc
- [STC SE00164SE](https://openairdocs.org/stc/SE00164SE): Installation of Avglas components to modify carburetor air housing assemblies.. McFarlane Aviation, Inc.
- [STC SE00350SE](https://openairdocs.org/stc/SE00350SE): Installation of sump mounted chip detector.. Aviation Development Corporation
- [STC SE00262NY](https://openairdocs.org/stc/SE00262NY): Installation of Canadian Aero Manufacturing Pull Start Clutch, P/N 1971890-N or 1971890-M.. Canadian Aero Manufacturing
- [STC SE8669SW](https://openairdocs.org/stc/SE8669SW): Installation of roller rocker arm.. Performance Engineering
- [STC SE452NE](https://openairdocs.org/stc/SE452NE): Installation and usage of 'Mobil AV 1' aviation oil.. Mobil Research & Development Corp
- [STC SE3-663](https://openairdocs.org/stc/SE3-663): Install dry vacuum pump drive.. Parker Hannifin Corp
- [STC SE5879SW](https://openairdocs.org/stc/SE5879SW): Use of Phillips X/C II 20W-50 and25W-60 oil (OSS 55875) in all Avco reciprocating aircraft engines from 65 to 450 BHP.. Phillips Petroleum Co
- [STC SE1976SW](https://openairdocs.org/stc/SE1976SW): Manufacture of new cylinder barrels and rebarreling with original cylinder head.. Gary Aerospace Corp
- [STC SE244NE](https://openairdocs.org/stc/SE244NE): Installation of Mattituck plasma flame sprayed cylinder barrels in Teledyne reciprocating engines.. Mattituck Airbase, Inc
- [STC SE80NE](https://openairdocs.org/stc/SE80NE): Installation and usage of Bel-Ray synthetic aviation oil, Bel-Ray Aero 1, (nonsupercharged), horizontally opposed direct drive, aircraft engines of 350 hp. or less.. Bel-Ray Company, Inc
- [STC SE2006CE](https://openairdocs.org/stc/SE2006CE): Add the following approved fuel: unleaded automotive gasoline, 87 minimum index and leaded automotive gasoline, 88 minimum antiknock index (RON+MON)/2. Also intermixing of aviation gasoline.. Petersen Aviation Inc
- [STC SE1445SO](https://openairdocs.org/stc/SE1445SO): Use of Aero-blend oil additive in Teledyne (non turbocharged) aircraft engines.. ProTec
- [STC SE12GL](https://openairdocs.org/stc/SE12GL): Installation of oil filler cap.. Ray Whyte Electric Products Co.
- [STC SE44WE](https://openairdocs.org/stc/SE44WE): Use of Kling Aviation Oil, Specifications KL-100, KL-200 and KL-300 in Continental and Lycoming engines.. Kling Oil Company

---
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