- Holder
- Lycoming Engines
- Revision
- 22
- Revised
- January 31, 2020
- Status
- Current
- Product
- Engine
- Certification basis
- CAR 13
- Models
- 43
- Registered
- 6,407 aircraft
The release keeps the latest revision of each data sheet. Model names are as the data sheet lists them.
On this page
Models · 43
| Model | Also known as | Note |
|---|---|---|
| O-235-K2C | Formerly Textron Lycoming, AVCO Corporation | |
| O-235-M3C | Formerly Textron Lycoming, AVCO Corporation | |
| O-235-A | Formerly Textron Lycoming, AVCO Corporation |
Airworthiness directives · 23
ADs whose products are models on this data sheet, matched by model and maker.
AD 2026-17-10Reciprocating Engine Cylinder SectionAD 2026-04-11Engine (Reciprocating)AD 2022-16-03Engine (RECIPROCATING)
See all 23 ADsRegistered aircraft
Registry models that point at this data sheet, with their registered aircraft.
Lycoming 0-235 series6,133 registered aircraftLycoming O-235-L2C84 registered aircraftLycoming O-235-C149 registered aircraft
See all 41 registry modelsSTCs approved under this data sheet · 45
STC SE04651CHTo allow use of l00R grade aviation fuel meeting Swift Fuel, LLC specification SPEC-l00R-22STC SE00825WIInstallation of Specialty Products Spin-on oil filter on Lycoming Engines.STC SE2932SWInstall carburetor air temperature indicator. Approved for Aircooled Motors (Franklin Engine Co.) equipped with float carburetors. Model eligibility included here may not be inclusive.
See all 45 STCsWhat the data sheet says
From the PDF’s text layer, line by line: tables lose their columns. The PDF is the record.
Page No. 1 2 3 4 5 6 7
Rev. No. 22 22 18 22 18 18 22
DEPARTMENT OF TRANSPORTATION
FEDERAL AVIATION ADMINISTRATION
E-223
Revision 22
Lycoming Engines
O-233-A1,O-235
O-235-A, -B, -AP, -BP, -C, -C1, -C1A, -C1B, -C1C, -C2A, -C2B, -C2C,
-E1, -E1B, -E2A, -E2B, -F1, -F1B, -F2A, -F2B, -G1, -G1B,
-G2A,-G2B, -H2C, -J2A, -J2B, -K2A, -K2B, -K2C, -L2A, -L2C,
-M1, -M2C, -M3C, -N2A, -N2C, -P1, -P2A, -P2C, -P3C
January 31, 2020
TYPE CERTIFICATE DATA SHEET NO. E-223
Engines of models described herein conforming with this data sheet (which is a part of Type Certificate No. E-223) 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 Civil Air Regulations/Federal Aviation Regulations
provided they are installed, operated and maintained as prescribed by the approved manufacturer's manuals and other approved
instructions.
Type Certificate Holder Lycoming Engines
An Operating Division of AVCO Corporation
652 Oliver Street
Williamsport, Pennsylvania 17701
Type Certificate Holder Record Avco Lycoming Williamsport Div., AVCO Corporation transferred TC E-223 to
Lycoming Engines, An Operating Division of AVCO Corporation on December 17, 2003
Model O-235-C1,-C1B,
-E1,-E1B
O-235-C1C O-235-C1A O-235-C2C,
-H2C
O-235-L2C,
-K2C
Type 4HOA Direct Drive - - - - - - - -
Rating
Max. continuous hp., r.p.m.
Sea level pressure altitude 115-2800-S.L. 108-2600-S.L. 100-2450-S.L. 108-2600-S.L.
(See Note 11)
115-2700-S.L.
(See Note 12)
Takeoff (5 min.) hp., r.p.m. at full
throttle
115-2800 115-2800 100-2450 115-2800 118-2800
Fuel (minimum grade aviation
gasoline)
Lycoming Service
Instruction 1070
- - - - - - - -
Lubricating Oil (Lubricants should
conform to the specifications as
listed or later revisions thereto)
Lycoming Spec.
No. 301 and
Service Instruction
1014
- - - - - - - -
Bore and stroke, inch 4.375 x 3.875 - - - - - - - -
Displacement, cubic inch 233 - - - - - - - -
Compression ratio 6.75:1 - - - - - - 8.5:1
Weight (dry), lb. (See NOTE 8) - - - - - - - -
C.G. Location (See NOTE 8) - - - - - - - -
Propeller shaft end size Integral flange -
SAE Type 2
- - - - Type 1 - -
Crankshaft Dampers None - - - - - - - -
Carburetor+ MA-3A or
MA-3PA
- - MA-3A LVC-3-3A or
LVC-3-3PA
- -
Ignition, dual (See NOTE 8) - - - - - - - -
Spark plugs (See NOTE 7) - - - - - - - -
Ignition, timing °BTC 25 - - 15 25 20
Oil sump capacity, qt. 6 - - - - - - - -
Usable oil, qt. 4 - - - - - - - -
NOTES 1 thru 5,7,8,10 - - - - 1 thru
5,7,8,10,11
- -
"- -" indicates "same as preceding model"
+ See latest revision of Lycoming Service Instruction No. 1523 for alternate carburetors.
E-223 Page 2 of 7
Models (Continued) O-235-C2A,
-C2B,-E2A,
-E2B
O-235-F1,
-F1B,-G1,
-G1B
O-235-F2A,
-F2B,-G2A,
-G2B,-J2A,
-J2B
O-235-K2A,
-K2B,-L2A,
-M1,-M2C,
-M3C
O-235-N2A,
-N2C,-P1,
-P2A,-P2C,
-P3C
Type 4HOA Direct
Drive
- - - - - - - -
Rating
Max. continuous hp., r.p.m.
Sea level pressure altitude 115-2800-S.L. 125-2800-S.L. 125-2800-S.L. 118-2800-S.L.
(See NOTE 12)
116-2800-S.L.
(See NOTE 14)
Takeoff (5 min.) hp., r.p.m. at full
throttle
115-2800 125-2800 125-2800 118-2800 116-2800
Fuel (minimum grade aviation
gasoline)
Lycoming
Service
Instruction 1070
- - - - - - - -
Lubricating Oil (Lubricants should
conform to the specifications as
listed or later revisions thereto)
Lycoming Spec.
No. 301 and
Service
Instruction 1014
- - - - - - - -
Bore and stroke, inch 4.375 x 3.875 - - - - - - - -
Displacement, cubic inch 233 - - - - - - - -
Compression ratio 6.75:1 9.7:1 - - 8.5:1 8.1:1
Weight (dry), lb. (See NOTE 8) - - - - - - - -
C.G. Location (See NOTE 8) - - - - - - - -
Propeller shaft end size Integral flange -
SAE Type 1
Type 2 Type 1 Type 1* Type 1*
Crankshaft Dampers None - - - - - - - -
Carburetor+ LVC-3-3A or
LVC-3-3PA
MA-3A or
MA-3PA
LVC-3-3A or
LVC-3-3PA
- - - -
Ignition, dual (See NOTE 8) - - - - - - - -
Spark plugs (See NOTE 7) - - - - - - - -
Ignition, timing °BTC 25 - - - - 20 - -
Oil sump capacity, qt. 6 - - - - - - - -
Usable oil, qt. 4 - - - - - - - -
NOTES 1 thru 5,7,8,10 - - - - - - - -
"- -" indicates "same as preceding model"
* Models O-235-M1, -M3C, -P1 and -P3C have a type 2 flange
+ See latest revision of Lycoming Service Instruction No. 1523 for alternate carburetors.
CERTIFICATION BASIS:
Regulations & Amendments
Model
Date of Application
Date of Type
Certificate E-223
Issued/Revised
Canceled
(See Note 6)
CAR 13 As Amended to May 31, 1938 O-233-A1 June 13, 1940 August 26, 1940 February 25, 1944
As Amended to November 15, 1940 O-235 April 19, 1941 February 11, 1942 December 1, 1947
CAR 13 Effective August 1, 1941 O-235-A June 15, 1942 July 3, 1942 & 1947 December 1, 1947
O-235-B May 2, 1944 July 21, 1944 December 1, 1947
O-235-AP July 17, 1944 July 21, 1944 December 1, 1947
O-235-BP May 2, 1944 July 21, 1944 December 1, 1947
O-235-C November 15, 1945 January 3, 1946 December 1, 1947
(O-235-2 SEE NOTE 6)
O-235-C1 September 11, 1946 March 20, 1947
O-235-C1A May 28, 1948 July 7, 1948
Page 3 of 7 E-223
Regulations & Amendments (cont’d)
Model
Date of Application
Date of Type
Certificate E-223
Issued/Revised
Canceled
(See Note 6)
CAR 13 Effective June 15, 1956 O-235-C1B October 4, 1960 October 12, 1960
As Amended by 13-1, 13-2, & 13-3 O-235-C1C January 6, 1976 January 23, 1976
O-235-C2A May 26, 1965 July 22, 1965
O-235-C2B October 4, 1966 November 29, 1966
O-235-C2C February 6, 1968 February 16, 1968
O-235-E1 October 31, 1968 June 17, 1969
O-235-E1B October 31, 1968 June 17, 1969
O-235-E2A October 31, 1968 June 17, 1969
O-235-E2B October 31, 1968 June 17, 1969
O-235-F1 February 27, 1979 March 11, 1971
O-235-F1B February 27, 1970 March 11, 1971
O-235-F2A February 27, 1970 March 11, 1971
O-235-F2B February 27, 1970 March 11, 1971
O-235-G1 May 10, 1971 May 17, 1971
O-235-G1B May 10, 1971 May 17, 1971
O-235-G2A May 10, 1971 May 17, 1971
O-235-G2B May 10, 1971 May 17, 1971
O-235-H2C December 20, 1972 January 4, 1973
O-235-J2A February 6, 1973 February 12, 1973
O-235-J2B December 20, 1972 January 4, 1973
O-235-K2A April 19, 1974 June 6, 1974
O-235-K2B April 19, 1974 June 6, 1974
O-235-K2C June 23, 1978 June 28, 1978
O-235-L2A April 19, 1974 June 6, 1974
O-235-L2C June 25, 1975 July 11, 1975
O-235-M1 September 27, 1978 October 6, 1978
O-235-M2C October 23, 1981 November 4, 1981
O-235-M3C October 23, 1981 November 4, 1981
O-235-N2A December 3, 1981 January 5, 1982
O-235-N2C December 3, 1981 January 5, 1982
O-235-P1 April 23, 1982 May 12, 1982
O-235-P2C April 23, 1982 May 12, 1982
O-235-P3C April 23, 1982 May 12, 1982
O-235-P2A April 20, 1983 April 26, 1983
PRODUCTION BASIS: Production Certificate No. 3
NOTE 1. Maximum Permissible Temperatures:
Cylinder Head
Models
Spark Plug Washer
Thermocouple
Well Type
Thermocouple
Cylinder Barrel
Oil Inlet
All except 0-223-A1 525°F 500°F 325°F 245°F
O-235, O-235-A, -AP
O-235-B (O-235-2),
-BP
-C
E-223 Page 4 of 7
NOTE 2. For all models except O-233-A1, O-235, O-235-A, -AP, -B(O-235-2), -BP, -C, allowable fuel pressures at carburetor
inlet are:
3.0 p.s.i. desired, 0.5 p.s.i. minimum and 8.0 p.s.i. maximum.
For gravity feed systems, minimum fuel pressure is 7.5 inches of gasoline differential pressure across the fuel inlet
fitting for the O-235-K, -L, -M, -N series.
Oil Pressure Limits - (Normal operations) Minimum 60 p.s.i. Maximum 90 p.s.i.
(Idling 25 p.s.i.)
(Starting & Warm-up) Maximum 100 p.s.i. (O-235-N and P
series-115 p.s.i. max.)
NOTE 3. Deleted. (Accessories such as generators, fuel pumps, etc., previously listed in NOTE 3 are satisfactory for
continued use with these engines. Accessories of these type are not integral engine accessories and therefore are not
evaluated for approval during engine certification testing. The airworthiness of such accessories is substa ntiated
during aircraft-installation system approval. The suitability of the accessory for the engine mounting provisions as
described in NOTE 4 of this data sheet must be determined when processing such approval.
NOTE 4. The following accessory drives are available:
Accessory Drive
-C1A
-C2A, -C2B
-C1C, -C2C
-G1, -G1B
-G2A, -G2B
-F1, -F1B, -F2A, -F2B, -H2C,
-J2A, -J2B, -K2A, -K2B,
-L2A, -L2C, -K2C, -M1,
-M2C, -M3C, -N2A, -N2C
-P1, -P2A, -P2C, -P3C
Starter■ * * * *
Generator■ * * # #
or Generator■ ** # #
or Alternator■ ** * *
Fuel Pump (Plunger) * ** ** **
Tachometer● * * * *
Vacuum Pump● ** ** ** **
Propeller Governor # # ** ***
"#" indicates "does not apply" * = Standard, ** = Optional C = Clockwise, CC = Counter-Clockwise
*** = Models O-235-M1, -M2C, -M3C, -P1, -P2A, -P2C, -P3C are equipped with a Propeller Governor Drive, AN20010, Type
XX, note torque limitations.
■ These accessories are optional, see latest revision of Lycoming Service Instruction 1154 for the approved alternates.
● These drives are optional and accessory pads may be cast over.
Rotation Speed Maximum Torque Maximum
Facing Ratio to (in. -lb.) Overhang Moment
Accessory Drive Drive Pad Crankcase Cont. Static (in. -lb.)
Starter■ CC 13.556:1 # 450 150
Generator■ C 1.910:1 60 120 175
or Generator■ C 2.50:1 60 120 175
or Alternator■ C 3.25:1 60 120 175
Fuel Pump (Plunger) # 0.500:1 # # 10
Tachometer● C 0.500:1 7 50 5
Vacuum Pump● CC 1.300:1 70 450 25
Propeller Governor C 0.866:1 125 1200 40
"#" indicates "does not apply" * = Standard, ** = Optional C = Clockwise, CC = Counter-Clockwise
*** = Models O-235-M1, -M2C, -M3C, -P1, -P2A, -P2C, -P3C are equipped with a Propeller Governor Drive, AN20010, Type
XX, note torque limitations.
■ These accessories are optional, see latest revision of Lycoming Service Instruction 1154 for the approved alternates.
● These drives are optional and accessory pads may be cast over.
Page 5 of 7 E-223
NOTE 5. The foregoing models incorporate additional different characteristics as follows:
Models Characteristics
O-235-C1- Four cylinder, horizontally opposed, air cooled, direct drive. Has provisions for dual pump drives.
Eligible for both tractor and pusher type installations.
O-235-C1A- Similar to O-235-C1 except ignition timing, lower r.p.m. and hp. Has optional 2 position or
automatic propeller governor drive.
O-235-C1B- Similar to O-235-C1 except has retard breaker magnetos.
O-235-C1C- Similar to O-235-C1 except has Slick magnetos.
O-235-C2A- Similar to O-235-C1 except has a type 1 propeller flange.
O-235-C2B- Similar to O-235-C2A but has S-1200 series magnetos.
O-235-C2C- Similar to O-235-C2B except incorporates Slick magnetos with integral shielded ignition harness.
O-235-E1- Similar to O-235-C1 except crankcase and crankshaft, modified to supply pressurized oil to contant
speed propeller; Accessory case changed to accommodate a standard propeller governor drive.
O-235-E1B- Similar to O-235-E1 except for S4LN-200 series retard breaker magnetos.
O-235-E2A- Similar to O-235-E1 except has Type 1 propeller flange.
O-235-E2B- Similar to O-235-E2A except incorporates S-1200 series magnetos.
O-235-F1- Similar to O-235-C1 except for compression ratio, fuel grade and rating.
O-235-F1B- Similar to O-235-F1 except has retard breaker magnetos.
O-235-F2A- Similar to O-235-F1 except has a Type 1 propeller flange.
O-235-F2B- Similar to O-235-F2A but has a S-1200 series magnetos.
O-235-G1- Similar to O-235-F1 except has provisions for using constant speed propeller.
O-235-G1B- Similar to O-235-G1 except has retard breaker magnetos.
O-235-G2A- Similar to O-235-G1 except has a Type 1 propeller flange.
O-235-G2B- Similar to O-235-G2A except has S-1200 series magnetos.
O-235-H2C- Similar to O-235-C2C except has Type 1 dynafocal mounting.
O-235-J2B- Similar to O-235-F2B except has Type 1 dynafocal mounting.
O-235-J2A- Similar to O-235-J2B except for magnetos.
O-235-K2A- Similar to O-235-F2A except ignition timing, lower hp. and reduced compression ratio.
O-235-K2B- Similar to O-235-F2B except ignition timing, lower hp. and reduced compression ratio.
O-235-K2C- Similar to O-235-K2A except has Slick magnetos.
O-235-L2A- Similar to O-235-J2A except ignition timing, lower hp and reduced compression ratio.
E-223 Page 6 of 7
O-235-L2C- Similar to O-235-L2A except has Slick magnetos and lower maximum continuous rating.
O-235-M1- Similar to -L2A except has provision for controllable propeller and has AS-127 Type 2 propeller
flange.
O-235-M2C- Similar to O-235-M1 except has Slick 4200 series magnetos and Type 1 propeller flange.
O-235-M3C- Similar to O-235-M1 except has Slick 4200 series magnetos.
O-235-N2A- Similar to O-235-L2A except has reduced compression ratio and reduced power ratings.
O-235-N2C- Similar to O-235-L2C except has reduced compression ratio and reduced power ratings.
O-235-P1- Similar to O-235-M1 except has reduced compression ratio and reduced power ratings.
O-235-P2C- Similar to O-235-M2 except has reduced compression ratio and reduced power ratings.
O-235-P3C- Similar to O-235-M3C except has reduced compression ratio and reduced power ratings.
O-235-P2A- Similar to O-235-P1 except has a Type 1 propeller flange.
NOTE 6. Approval of the following models has expired. No engines of these models manufactured after the date or with
serial numbers above those listed below are eligible for use in certificated aircraft. (The early production engines
may still be used in certificated aircraft or installed under a supplemental type c ertificate). Detail specifications for
these engines have been deleted from this data sheet. Such information can be obtained by contacting the Manager,
Propulsion Branch of the New York Aircraft Certification Office, Federal Aviation Administration.
Model Date Serial No.
O-233-A1 2-25-44 106
O-235, O-235-A, -AP, O-235-B, 12-1-47 4524-15
-BP, O-235-C
O-235-2 Identical to O-235-B. When engines of this model are installed in certificated aircraft, the
corresponding commercial model designation should be added to the engine nameplate.
NOTE 7. Spark Plugs: See latest revision of Lycoming Service Instruction No. 1042 for approved equipment.
Page 7 of 7 E-223
NOTE 8. Ignition, C.G. and Weights
C.G. Location (dry) including starter and generator Off prop.
Propeller Flange Below prop. shaft Weight
Model Ignition, dual* # front face, in. shaft C.L., in. C.L., in. (dry) lb.
O-235-C1 TCM S4LN-21, S4LN-20 14.75 1.13 0.20 Left 246
O-235-C1A TCM SF4LN-8, SF4N-8
TCM SF4LN-21, S4LN-20
14.75 1.13 0.20 Left 236
O-235-C1B TCM S4LN-200, S4LN-204 14.75 1.13 0.20 Left 245
O-235-C1C Slick 4251, 4250 14.75 1.13 0.20 Left 243
O-235-C2A TCM S4LN-21, S4LN-20 14.75 1.13 0.20 Left 246
O-235-C2B TCM S4LN-1227, S4LN-1209 14.75 1.13 0.20 Left 247
O-235-C2C Slick 4251, 4250 14.75 1.13 0.20 Left 244
O-235-E1 TCM S4LN-21, S4LN-20 14.51 1.17 0.15 Left 250
O-235-E1B TCM S4LN-200, S4LN-204 14.51 1.17 0.15 Left 249
O-235-E2A TCM S4LN-21, S4LN-20 14.51 1.17 0.15 Left 250
O-235-E2B TCM S4LN-1227, S4LN-1209 14.51 1.17 0.15 Left 251
O-235-F1 TCM S4LN-21, S4LN-20 14.75 1.13 0.20 Left 250
O-235-F1B TCM S4LN-200, S4LN-204 14.75 1.13 0.20 Left 249
O-235-F2A TCM S4LN-21, S4LN-20 14.75 1.13 0.20 Left 250
O-235-F2B TCM S4LN-1227, S4LN-1209 14.75 1.13 0.20 Left 251
O-235-G1 TCM S4LN-21, S4LN-20 14.51 1.17 0.15 Left 253
O-235-G1B TCM S4LN-200, S4LN-204 14.51 1.17 0.15 Left 252
O-235-G2A TCM S4LN-21, S4LN-20 14.51 1.17 0.15 Left 253
O-235-G2B TCM S4LN-1227, S4LN-1209 14.51 1.17 0.15 Left 254
O-235-H2C Slick 4251, 4250 14.75 1.13 0.20 Left 243
O-235-J2A TCM S4LN-21, S4LN-20 14.75 1.13 0.20 Left 252
O-235-J2B TCM S4LN-1227, S4LN-1209 14.75 1.13 0.20 Left 253
O-235-K2A TCM S4LN-21, S4LN-20 14.75 1.13 0.20 Left 252
O-235-K2B TCM S4LN-1227, S4LN-1209 14.75 1.13 0.20 Left 253
O-235-K2C Slick 4252 or 4281 and 4250 14.75 1.13 0.20 Left 248
O-235-L2A,
-N2A
TCM S4LN-20, -21 or
S4LN-204, -21, or two S4LN-21
14.75 1.13 0.20 Left 252
O-235-L2C, -N2C Slick 4250, 4252, or 4250, 4281,
or two 4252, or two 4281
14.75 1.13 0.20 Left 249
O-235-M1, -P1 & -P2A TCM S4LN-20, -21 or
S4LN-204, -21 or two S4LN-21
14.51 1.17 0.15 Left 255
O-235-M2C, -M3C,
-P2C, and -P3C
Slick 4250, 4281 or 4252, Opt.
two 4252 or 4281
14.51 1.17 0.15 Left 252
* For alternate ignition systems see latest revision of Lycoming Service Instruction 1443.
# Teledyne (TCM) formally Bendix
NOTE 9. Deleted 3/21/80.
NOTE 10. Starters, generators and alternators approved for use on these engines are listed in the latest revision of Lycoming
Service Instruction No. 1154.
NOTE 11. Models O-235-C2C and O-235-H2C have an alternate rated maximum continuous power rating of 100 hp at 2400
r.p.m.
NOTE 12. Models O-235-L2A, -L2C, O-235-M1, -M2C, and O-235-M3C have alternate ratings of 115 hp at 2700 r.p.m., 112
hp at 2600 r.p.m., 110 hp at 2550 r.p.m., and 105 hp at 2400 r.p.m.
NOTE 13. All models equipped with one impulse coupling magneto, may use two impulse coupling magnetos as optional
equipment.
NOTE 14. Models O-235-N2A, -N2C, -P1, -P2A, -P2C, -P3C have alternate ratings of 113 hp at 2700 r.p.m., 110 hp at 2600
r.p.m., 108 hp at 2550 r.p.m. and 103 hp at 2400 r.p.m.
.....END......