# TCDS E-295: Lycoming Engines

- Type: Type certificate data sheet
- Status: Current
- Holder: Lycoming Engines
- Revision: 19
- Revised: April 30, 2013
- Product: Engine
- Certification basis: CAR 13
- Registered aircraft: 5,787, by the registry models matched to it (OpenAirDocs)
- Data sheet PDF: https://openairdocs.org/files/sha256/91/ed/91ed4927d6db3c0e2f4be7f7f02d96ba99fcc4fdea9ac7badd492257e06fa2c5
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/93856FC09B9F3B5686257B63006C422F.0001
- Page: https://openairdocs.org/tcds/E-295

## Models (47)

As the data sheet lists them.

- O-540-L3C5D
- O-540-J2B5D
- O-540-J1B5D
- O-540-B2C5
- O-540-B1D5
- O-540-G2A5
- O-540-H2A5
- O-540-H1B5D
- O-540-J3A5
- O-540-J1D5D
- O-540-B2B5
- O-540-J1C5D
- O-540-H1A5D
- O-540-H2A5D
- O-540-A1D
- O-540-A4B5
- O-540-J2D5D
- O-540-F1B5
- O-540-A3D5
- O-540-A4C5
- O-540-F1A5
- O-540-A1D5
- O-540-A1A5
- O-540-A1A
- O-540-H2B5D
- O-540-E4C5
- O-540-H1A5
- O-540-D1A5
- O-540-G1A5
- O-540-B2A5
- O-540-B4B5
- O-540-A4E5
- O-540-B4A5
- O-540-J3A5D
- O-540-E4A5
- O-540-B1A5
- O-540-J2A5D
- O-540-B1B5
- O-540-E4B5
- O-540-A1C5
- O-540-A4D5
- O-540-J1A5D
- O-540-A1B5
- O-540-A2B
- O-540-J2C5D
- O-540-J3C5D
- O-540-A4A5

## What the data sheet says

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

```text
Page No. 01 02 03 04 05 06 07 08 
Rev. No. 19 19 19 18 18 18 18 18 
Reformatted 9/94. 
DEPARTMENT OF TRANSPORTATION 
FEDERAL AVIATION ADMINISTRATION 
 
E-295 
Revision 19 
Lycoming Engines 
O-540-A1A, -A1A5, -A1B5, -A1C5, -A1D, -A1D5, -A2B, -A3D5, -A4A5,  
    -A4B5, -A4C5, -A4D5, -A4E5, 
O-540-B1A5, -B1B5, -B1D5, -B2A5, -B2B5, -B2C5, -B4A5, -B4A5, -B4B5, 
O-540-D1A5,  
O-540-E4A5, -E4B5, -E4C5,  
O-540-F1A5, -F1B5, 
O-540-G1A5, -G2A5, 
O-540-H1A5, -H2A5, -H1A5D, -H2A5D, -H1B5D, -H2B5D,  
O-540-J1A5D, -J2A5D, -J1B5D, -J2B5D, -J3A5D, -J3A5,  
    -J1C5D -J2C5D, -J1D5D, -J2D5D, -J3C5D, -L3C5D 
 
April 30, 2013 
 
TYPE CERTIFICATE DATA SHEET NO. E-295 
 
Engines of models described herein conforming with this data sheet (which is a part of Type Certificate No. 295) and other 
approved data on file with the Federal Aviation Administration meet the minimum standards for use in certificate 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 
 Williamsport, Pennsylvania 17701 
 
Type Certificate Holder Record Avco Lycoming Willia msport Div., AVCO Corporation transferred TC E-295 to 
Lycoming Engines, An Operating Division of AVCO Corporation on December 17, 2003

E-295 2  
 
Model         Lycoming O-540 -A1A, -A1A5, -A1B5, 
-A1C5, -A1D, -A1D5,  
-A2B, -A3D5, -A4A5, 
-A4B5, -A4C5,  
-A4D5, -D1A5, 
-A4E5 
-B1A5, -B1B5, -B1D5, 
-B2A5, -B2B5, -B2C5, 
-B4A5, -B4B5 
-E4A5, -E4B5,  
-E4C5, -G1A5,  
-G2A5, -H1A5,  
-H2A5,  -H1A5D, -
H2A5D, -H1B5D, -
H2B5D 
-F1A5, -F1B5 
Type   6HOA Direct Drive - - - - - - 
Rating     
  Maximum continuous, hp.,     
    r.p.m, in. Hg., at: 
    
  Critical pressure altitude (ft.) ⎯ ⎯ ⎯ 235-2800-25.0,4000 
  Sea level pressure altitude  250-2575-F.T.-S.L . 235-2575-F.T.-S.L. 260-2700-F.T.-S.L. 235-2800-26.0-S.L. 
Takeoff (5 min.), hp., r.p.m.,  
  in. Hg., at: 
    
  Critical pressure altitude (ft.) ⎯ ⎯ ⎯ 260-2800-27.5-800 
  Sea level pressure altitude 250-2575-F.T.-S.L . 235-2575-F.T.-S.L. 260-2700-F.T.-S.L. 260-2800-28.0-S.L. 
Fuel (Minimum grade    
  aviation gasoline) 
See NOTE 8 - - - - - - 
Lubricating oil (lubricants  
  which conform to the  
  specifications as listed or to  
  subsequent revision thereto.) 
See Latest edition of 
Lycoming   Service 
Instruction 1014 
- - - - - - 
Bore and stroke. in. 5.125 X 4.375 - - - - - - 
Displacement, cu. in. 541.5 - - - - - - 
Compression ratio See NOTE 8 - - - - - - 
Weight (dry) See NOTE 5 - - - - - - 
C.G. location (dry) See NOTE 5 - - - - - - 
  From front face of prop shaft  
    flange, in 
17.9 - - - - - - 
  Off propeller shaft C.L., in. 1.21 below 
0.15 left 
- - - - - - 
Propeller shaft-AS-127 Type 2 flange modified - - - - - - 
Carburetion** LVC-5-5PA - - - - - - 
Ignition, dual See NOTE 8 - - - - - - 
Timing, °BTC 25 - - - - - - 
Spark plugs See NOTE 7 - - - - - - 
Oil sump capacity, qt. 12 - - - - - - 
Crankshaft dampers See NOTE 5 & 6 - - - - - - 
Minimum safe oil quantity qts.     
  20°nose up or down attitude 2-3/4 - - - - - - 
  30°nose up attitude 4 - - - - - - 
NOTES - As applicable 1 through 8, 10, 11 - - - - 1 through 11 
 
"- -" indicates "same as preceding model" 
"⎯" indicates "does not apply" 
** See latest revision of Lycoming Service Instruction 1523 for alternate carburetors.

3 E-295  
 
 
Model         Lycoming O-540 -J1A5D, -J2A5D,  
-J1B5D, -J2B5D,  
-J3A5D 
-J1C5D, -J2C5D,  
-J3C5D, -J1D5D,  
-J2D5D 
-L3C5D  
  (See NOTE 12) 
        -J3A5 
Type   6HOA Direct Drive - - - - - - 
Rating     
  Maximum continuous, hp.,  
    r.p.m, in. Hg., at: 
    
  Critical pressure altitude (ft.) ⎯ ⎯ ⎯ ⎯
  Sea level pressure altitude  235-2400-F.T.-S.L . 235-2400-F.T.-S.L. 235-2400-F.T.-S.L. 235-2400-F.T.-S.L. 
Takeoff (5 min.), hp., r.p.m.,  
  in. Hg., at: 
    
  Critical pressure altitude (ft.) ⎯ - - - - - - 
  Sea level pressure altitude 235-2400-F.T. -S.L. 235-2400-F.T.-S.L. 235-2400-F.T.-S.L. - - 
Fuel (Minimum grade  
  aviation gasoline) 
See NOTE 8 - - - - - - 
Lubricating oil (lubricants  
  which conform to the  
  specifications as listed or to  
  subsequent revision thereto.) 
See Latest edition of 
Lycoming   Service 
Instruction 1014 
- - - - - - 
Bore and stroke. in. 5.125 X 4.375 - - - - - - 
Displacement, cu. in. 541.5 - - - - - - 
Compression ratio See NOTE 8 - - - - - - 
Weight (dry) See NOTE 5 - - - - - - 
C.G. location (dry)     
  From front face of prop shaft  
    flange, in 
17.75 17.94 18.10 17.99 
  Off propeller shaft C.L., in. 0.75 below 
0.19 left 
0.69 below 
0.19 left 
0.59 below 
0.34 left 
1.21 below 
0.08 left 
Propeller shaft-AS-127 Type 2 flange 
modified 
- - - - - - 
Carburetion ** LVC-5-5PA LHC-6-6BPA LHC-6-6BA LVC-5-5PA 
Ignition dual See NOTE 8 - - - - - - 
Timing, °BTC 23 - - - - - - 
Spark plugs See NOTE 7 - - - - - - 
Oil sump capacity, qts. 12 - - - - - - 
Crankshaft dampers See NOTE 5 & 6 - - - - - - 
Minimum safe oil quantity qts. - - - - - - - - 
  20°nose up or down attitude 2-3/4 - - - - - - 
  30°nose up attitude 2 - - - - - - 
NOTES - As applicable 1 through 8, 10, 11 - - 1 through 8, 10, 11, 
12, 13 
1 through 8, 11 
 
"- -" indicates "same as preceding model" 
"⎯" indicates "does not apply" 
** See latest revision of Lycoming Service Instruction 1523 for alternate carburetors.

E-295 4  
 
Certification basis:  
 
Regulations and Amendments 
 
 
Model 
 
 
Date of Application 
Date Type Certificate 
No. E-295 
Issued/Revised 
 CAR 13 Effective June 15, 1956 O- 540-A1A July 2, 1957 October 31, 1957 
 As Amended By 13-1 & 13-2 O-540-A1A5 June 3, 1958 June 18, 1958 
  O-540-A2B July 24, 1958 July 24, 1958 
  O-540-D1A5 October 21, 1958 August 12, 1959 
  O-540-A1B5 January 21, 1959 February 10, 1959 
  O-540-A1C5 March 16, 1959 April 2, 1959 
  O-540-F1A5, -F1B5 April 3, 1959 August 12, 1959 
  O-540-A1D, -A1D5 January 21, 1960 March 17, 1960 
 13-3 O-540-A3D5 May 17, 1960 June 22, 1960 
  O-540-B1A5, -B2A5 November 30, 1960 May 3, 1961 
  O-540-B1B5 April 17, 1961 May 3, 1961 
  O-540-B2B5 December 8, 1961 December 26, 1961 
 13-4 O-540-A4A5, -A4B5, -
A4C5, -A4D5,  
-B4A5, -B4B5 
October 3, 1963 October 9, 1963 
  O-540-E4A5, -E4B5 April 1, 1964 May 4, 1964 
  O-540-E4C5 March 3, 1966 March 23, 1966 
  O-540-B1D5, -B2C5 November 23, 1966 December 2, 1966 
 O-540-G2A5 March 31, 1967 April 4, 1967 
 O-540-G1A5 October 6, 1967 October 9, 1967 
  O-540-H1A5, -H2A5 January 16, 1970 January 22, 1970 
  O-540-H1B5D, 
          -H2B5D 
July 30, 1971 August 4, 1971 
  O-540-H1A5D,  
          -H2A5D 
July 27, 1971 October 21, 1971 
  O-540-J1B5D, -J2B5D January 20, 1975 August 15, 1975 
  O-540-J1C5D, -J2C5D August 25, 1976 October 4, 1976 
            -J1D5D, -J2D5D   
  O-540-J3C5D February 4, 1977 February 15, 1977 
  O-540-J3A5D November 23, 1977 November 30, 1977 
  O-540-L3C5D July 21, 1977 June 19, 1978 
  O-540-J3A5 March 17, 1987 March 31, 1987 
     O-540-A4E5           March 14, 2012 March 22, 2012 
 
Production basis: Production Certificate No. 3 
 
NOTE 1. Maximum permissible temperatures are as follows: Cylinder Head 
(well type) 
Cylinder 
Base 
Oil  
Inlet 
 500°F 325°F 245°F 
 
NOTE 2. Pressure limits - p.s.i.  Minimum Maximum 
     0.5  30.0 (0-540-L3C5D:  See NOTE No. 13) 
 Fuel    0.5  8.0 
 Oil (Normal operation)   55.0  95.0 
 (Idle)    25.0  ⎯ 
 (Starting and warm-up)   ⎯  115.0

5 E-295  
 
NOTE 3. The following accessory provisions are incorporated: 
 -A1A,     
 -A1A5,     
 -A1B5,     
 -A1C5,     
 -A1D,     
 -A1D5,     
 -A4A5,     
 -A4B5,     
 -A4C5,   -B1A5  
 -A4D5  -A2B -B1B5  
 -A4E5  -B2A5 -B1D5,  
 -E4A5,  -B2B5 -B4A5     
 -E4B5  -B2C5 -B4B5,  -H1A5 -F1A5  
Accessory -E4C5 A3D5 -G2A5 -G 1A5 -D1A5 -H2A5 -F1B5 -L3C5D 
Starter * * * * * * ⎯ * 
Starter ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ * ⎯ 
Generator * * * * * ⎯ * ⎯ 
Generator ** ** ** ** ** ⎯ ⎯ ⎯ 
Alternator ** ** ** ** ⎯ * ⎯ * 
Alternator ** ** ** ** ** ** ** ** 
Vacuum Pump * * * * * * * * 
Hydraulic Pump * * * * * * * ⎯ 
Hydraulic Pump ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ * 
Tachometer * * * * * * * * 
Propeller Governor * * ⎯ * * * ⎯ ⎯ 
Propeller Governor ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ * 
Fuel Pump ** ** ** ** ** ** ** ⎯ 
Fuel Pump (plunger) ** * ** ** ** ** ** * 
 
   -J1A5D      
   -J2A5D      
   -J3A5D      
   -J1B5D  All Models 
 -H1A5D  -J2B5D  Rotation Speed Maximum Max.  
 -H2A5D  -J3C5D  Facing Ratio  Torque Overhang 
 -H1B5D -J2D5D -J1D5D  Drive to (in. -lb.) Moment 
Accessory -H2B5D -J2C5D -J1C5D -J3A5 Pa d Crankshaft Cont. Static (in. -lb.) 
Starter * * *  * CC 16.556:1 ⎯ 450 150 
Starter ⎯ ⎯ ⎯ ⎯ CC 13.556:1 ⎯ 450 150 
Generator ⎯ ⎯ ⎯ ⎯ C 1.010:1 60 120 175 
Generator ⎯ ⎯ ⎯ ⎯ C 2.500:1 60 120 175 
Alternator * * *  * C 3.250:1 60 120 175 
Alternator ** ** ⎯ ⎯ C 3.630:1 60 120 175 
Vacuum Pump * * *  ** CC 1.300:1 70 450 25 
Hydraulic Pump ⎯ ⎯ ⎯  ** C 1.385:1 100 800 40 
Hydraulic Pump * * * ⎯ C 1.300:1 100 800 40 
Tachometer * * *  * C 1.500:1 7 50 5 
Propeller Governor ⎯ ⎯ ⎯ ⎯ C 0.895:1 125 1200 25 
Propeller Governor * ⎯ *  ** C 0.947:1 125 1200 25 
Fuel Pump ** ⎯ ⎯ ⎯ CC 1.000:1 25 ⎯ 25 
Fuel Pump (plunger) ** ** **  ** ⎯ 0.500:1 ⎯ ⎯ 10 
 
"C" - Clockwise "CC" - Counter clockwise 
* - Standard 
** - Optional 
 
NOTE 4. These engines incorporate provisions for absorbing pr opeller thrust in both tractor and pusher type installations.

E-295 6  
 
NOTE 5. These models incorporate a dditional characteristics as follows: 
 
  O-540-Models Wt. dry, lb. Characteristics 
 
 -A1A  374 Basic model, direct drive, six cyli nder, horizontally opposed, air cooled engine with 
one each S6LN-20 and -21 Magnetos and two 6th order dampers. 
 -A1A5  374 Same as -A1A except has one  fifth and one sixth order dampers. 
 -A1B5  375 Same as -A1A5 except has propeller governor pad with short studs to accommodate 
AN type governor. 
 -A1C5  375 Same as -A1A5 except has two S6LN-21 impulse coupling magnetos. 
 -A1D  375 Similar to -A1B5 except has one each S6LN-200 and S6LN-204 magnetos and two 
sixth order crankshaft torsional dampers. 
 -A1D5  375 Similar to -A1D except has one fi fth and one sixth order crankshaft torsional 
dampers. 
 -A2B  374 Same as -A1B5 except for crankshaft  damper arrangement and propeller flange has 
propeller locating bushings displaced 60° clockwise, viewed facing propeller. 
 -A3D5  373 Similar to -A1D5 except has provisi ons for Goodrich propeller deicing equipment. 
 -A4A5  374 Similar to -A1A5 except has heavier fi fth and sixth order crankshaft counterweights. 
 -A4B5  375 Similar to -A1B5 except has heavier fi fth and sixth order crankshaft counterweights. 
 -A4C5  375 Similar to -A1C5 except has heavier fi fth and sixth order crankshaft counterweights. 
 -A4D5  375 Similar to -A1D5 except has heavier fi fth and sixth order crankshaft counterweights. 
 -A4E5  375 Same as –A4B5 except has side mounted oil gage and fill tube. 
 -B1A5  366 Same as -A1D5 except has lower compression ratio and performance. 
 -B1B5  366 Field conversion of -A1A5, -A 1B5, or -A1C5 to lower compression ratio. 
 -B1D5  367 Same as -B1A5 except for inco rporation of Bendix 1200 series magnetos. 
 -B2A5  366 Similar to -B1A5 except does not ha ve provisions for controllable pitch propeller. 
 -B2B5  366 Same as -B2A5 except has S6LN-20 and S6LN-21 magnetos. 
 -B2C5  368 Same as -B2B5 except for incor poration of Bendix 1200 series magnetos and does 
not include generator as part of the engine. 
 -B4A5  366 Similar to -B1A5 except has heavier fi fth and sixth order crankshaft counterweights. 
 -B4B5  366 Similar to -B1B5 except has heavier fi fth and sixth order crankshaft counterweights. 
 -D1A5  369 Same as -A1A5 except has increased strength crankcase. 
 -F4A5  368 Similar to -A4D5 except has hybr id camshaft permitting higher 260 hp. @ 2700 r.p.m. 
 -E4B5  369 Similar to -A4D5 except for left ma gneto S6LN-21 and minor difference in weight 
and length. 
 -E4C5  370 Same as model -E4B5 excep t has S6LN-1227 and S6LN-1209 magnetos. 
 -F1A5  367 Same as -A1A5 except rated for helic opter application and incorporates prototype 
bed mounting. 
 -F1B5  369 Same as -D1A5 except rated for helic opter application and incorporates provisions 
for either bed or dynafocal type mounting. 
 -G1A5  386 Similar to -E4C5 except incorporates  heavier crankshaft, different crankcase and  
    -A1D5 counterweights. 
 -G2A5  386 Similar to -G1A5 except does not pr ovide for use of constant speed propeller. 
 -H1A5  385 Similar to -G1A5 except has different  magnetos and incorporates piston cooling oil 
jets. 
 -H2A5  385 Similar to -G2A5 except has different  magnetos and incorporates piston cooling oil 
jets. 
 -H1A5D  381 Similar to -H 1A5 except incorporates dual magneto (impulse coupling). 
 -H2A5D  381 Similar to -H1A5D except does not have provision for controllable propeller. 
 -H1B5D  381 Similar to -H1A5 except incorporates dual magneto (retard). 
 -H2B5D  381 Similar to -H1B5D except does not have provision for controllable propeller. 
 -J1A5D  356 Similar to -A1A5 except incorporates dual magneto (impulse coupling), less weight 
and rated at 235 h.p. @ 2400 r.p.m. 
 -J2A5D  356 Similar to -J1A 5D except does not have provision for controllable propeller. 
 -J1B5D  356 Similar to -A1A5 ex cept incorporates dual magneto (retard), less weight and rated at 
235 h.p. @ 2400 r.p.m. 
 -J2B5D  356 Similar to -J1B5D except does not have provision for controllable propeller. 
 -J1C5D  356 Same as -J1A5D except has horizontal carburetor and induction housing. 
 -J2C5D  356 Same as -J1C5D except ha s no provision for controllable propeller. 
 -J1D5D  356 Same as -J1C5D but with  D6LN-3230 retard breaker dual magneto. 
 -J2D5D  356 Same as -J1D5D except does not  have provision for controllable propeller.

7 E-295  
 -J3C5D  357 Same as -J1C5D except has h eavier counterweights for use with McCauley 
controllable propeller. 
 
Note 5.          These models incorporate additional characteristics as follows:   cont. 
 
 -J3A5D  357 Same as -J1A5D except has h eavier counterweights (same as O-540-J3C5D). 
 -L3C5D  367 Same as -J3C5D except for features  to make engine suitable for turbocharging. 
 -J3A5  364 Same as -J3A5D excep t equipped with Slick magnetos. 
 
NOTE 6. These engines incorporate cra nkshafts with two sixth order dampers unless a "5" is part of the model 
designation, i.e., -A1A5.  Engines so designated have one fifth order damper and one sixth order damper instead 
of two sixth order dampers. 
 
NOTE 7. Spark plugs approved for use on these engines are liste d in the latest revision of Lycoming Service Instruction 
No. 1042. 
 
 
NOTE 8. Fuel grade, compression and ignition: 
   
O-540-Models Fuel - Aviation Gasoline Compression Ratio Ignition, Dual   TCM * 
-A1A 100 or 100 LL 8.50:1 S6LN-20, S6LN-21 
-A1A5 100 or 100 LL 8.50:1 S6LN-20, S6LN-21 
-A1B5 100 or 100 LL 8.50:1 S6LN-21, S6LN-21 
-A1C5 100 or 100 LL 8.50:1 S6LN-21, S6LN-21 
-A1D 100 or 100 LL 8.50:1 S6LN-204, S6LN-200 
-A1D5 100 or 100 LL 8.50:1 S6LN-204, S6LN-200 
-A2B 100 or 100 LL 8.50:1 S6LN-20, S6LN-21 
-A3D5 100 or 100 LL 8.50:1 S6LN-204, S6LN-200 
-A4A5 100 or 100 LL 8.50:1 S6LN-20, S6LN-21 
-A4B5 100 or 100 LL 8.50:1 S6LN-21, S6LN-21 
-A4C5 100 or 100 LL 8.50:1 S6LN-21, S6LN-21 
-A4D5 100 or 100 LL 8.50:1 S6LN-204, S6LN-200 
-A4E5 100 or 100 LL 8.50:1 S6LN-21, S6LN-21 
-B1A5 100 or 100 LL 7.20:1 S6LN-204, S6LN-200 
-B1B5 100 or 100 LL 7.20:1 S6LN-20, S6LN-21 
-B1D5 100 or 100 LL 7.20:1 S6LN-1209, S6LN-1208 
-B2A5 100 or 100 LL 7.20:1 S6LN-204, S6LN-200 
-B2B5 100 or 100 LL 7.20:1 S6LN-20, S6LN-21 
-B2C5 100 or 100 LL 7.20:1 S6LN-1209, S6LN-1227 
-B4A5 100 or 100 LL 7.20:1 S6LN-204, S6LN-200 
-B4B5 100 or 100 LL 7.20:1 S6LN-20, S6LN-21 
-D1A5 100 or 100 LL 8.50:1 S6LN-20, S6LN-21 
-E4A5 100 or 100 LL 8.50:1 S6LN-204, S6LN-200 
-E4B5 100 or 100 LL 8.50:1 S6LN-204, S6LN-200 
-E4C5 100 or 100 LL 8.50:1 S6LN-204, S6LN-200 
-F1A5 100 or 100 LL 8.50:1 S6LN-20, S6LN-21 
-F1B5 100 or 100 LL 8.50:1 S6LN-204, S6LN-200 
-G1A5 100 or 100 LL 8.50:1 S6LN-1227, S6LN-1209 
-G2A5 100 or 100 LL 8.50:1 S6LN-1227, S6LN-1209 
-H1A5 100 or 100 LL 8.50:1 S6LN-20, S6LN-21 
-H2A5 100 or 100 LL 8.50:1 S6LN-20, S6LN-21 
 
* For Alternate magnetos see latest copy of Lycoming Service Instruction 1443,   
   TCM formally Bendix 
 
 All models equipped with one impulse coupling magneto may use two impulse coupling magnetos as 
optional equipment.

E-295 8  
Note 8.  Cont. 
 
O-540-Models Fuel - Aviation Gasoline Compression Ratio Ignition, Dual  TCM * 
-H1A5D 100 or 100 LL 8.50:1 D6LN-3031 
-H2A5D 100 or 100 LL 8.50:1 D6LN-3031 
-H1B5D 100 or 100 LL 8.50:1 D6LN-3230 
-H2B5D 100 or 100 LL 8.50:1 D6LN-3230 
-J1A5D 100 or 100 LL 8.50:1 D6LN-3031 
-J2A5D 100 or 100 LL 8.50:1 D6LN-3031 
-J1B5D 100 or 100 LL 8.50:1 D6LN-3230 
-J2B5D 100 or 100 LL 8.50:1 D6LN-3230 
-J1C5D 100 or 100 LL 8.50:1 D6LN-3031 
-J2C5D 100 or 100 LL 8.50:1 D6LN-3031 
-J1D5D 100 or 100 LL 8.50:1 D6LN-3230 
-J2D5D 100 or 100 LL 8.50:1 D6LN-3230 
-J3A5 100 or 100LL 8.50:1 Slick 6350 / 6351 
-J3C5D 100 or 100 LL 8.50:1 D6LN-3031 
-J3A5D 100 or 100LL 8.50:1 D6LN-3031 
-L3C5D 100 or 100 LL 8.50:1 D6LN-3031 
 
* For Alternate magnetos see latest copy of Textron Lycoming Service Instruction 1443,   
TCM formerly Bendix,  D6LN-2XXX series magnetos have been superseded by D6LN-3XXX series 
magnetos 
 
 
 
All models equipped with one impulse coupling magneto may use two impulse coupling magnetos as optional 
equipment. 
 
 
 
NOTE 9. Engine models O-540-F1A5 and -F1B5 are approved for helicopter application and operation in a horizontal 
installation. 
 
NOTE 10. Models O-540-A4A5, -A4B5, -A4C 5, -A4D5, -A4E5, -B4A5, -B4B5, -E4B5, -E4A5, and -E4C5 are equipped 
with fifth and sixth order crankshaft counterweights which are heavier than the usual fifth and sixth order 
counterweights employed in other O-540 engine models. 
 
NOTE 11. Starters, generators, and altern ators approved for use on these engines are listed in the latest revision of 
Lycoming Service Instruction No. 1154. 
 
NOTE 12. When equipped in accordance with Cessna Dwg. 2250065, this engine is certified for operation at a maximum 
manifold pressure of 31.0 in. Hg at 2400 r.p.m. 
 
NOTE 13. When complying with Lycoming Service Instruction No. 1398, the minimum permissible fuel pressure increase 
from 0.5 psi to 3 psi.  Therefore, revised fuel pressure gage marking indicating a minimum red line of 3 psi is 
required. 
 
 
.....END.....
```

## ADs (45, in force first)

- [AD 2026-17-10](https://openairdocs.org/ad/2026-17-10): Reciprocating Engine Cylinder Section · Lycoming Engines O-235, O-235-A, O-235-AP and 159 more. Effective Sep 14, 2026
- [AD 2026-04-11](https://openairdocs.org/ad/2026-04-11): Engine (Reciprocating) · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 605 more. Effective Apr 8, 2026
- [AD 2022-16-03](https://openairdocs.org/ad/2022-16-03): Engine (RECIPROCATING) · Continental Aerospace Technologies GTSIO-520-C, GTSIO-520-D, GTSIO-520-F and 236 more. Effective Aug 15, 2022
- [AD 2017-16-11](https://openairdocs.org/ad/2017-16-11): Reciprocating Engine Power Section · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-360-B1G6 and 93 more. Effective Aug 15, 2017
- [AD 2012-19-01](https://openairdocs.org/ad/2012-19-01): Crankshafts · Lycoming Engines AEIO-360-A1A, AEIO-360-A1B, AEIO-360-A1B6 and 321 more. Effective Oct 24, 2012
- [AD 2012-03-07](https://openairdocs.org/ad/2012-03-07): Carburetor · Lycoming Engines GO-435, GO-435-C2 (O-435-17), GO-435-C2A and 389 more. Effective Mar 27, 2012
- [AD 2011-13-03](https://openairdocs.org/ad/2011-13-03): Turbocharger Turbine · Lycoming Engines LTO-360-E1A6D, O-540-L3C5D, TIGO-541-E1A and 20 more. Effective Jul 13, 2011
- [AD 2010-07-08](https://openairdocs.org/ad/2010-07-08): Turbochargers · Kelly Aerospace Energy Systems HIO-360-E1AD, HIO-360-E1BD, HIO-360-F1AD and 137 more. Effective Apr 19, 2010
- [AD 2009-26-12](https://openairdocs.org/ad/2009-26-12): Cylinder assemblies · Engine Components Reciprocating Engine Cylinder Assemblies, AEIO-320-D1B, AEIO-320-D2B and 264 more. Effective Feb 4, 2010
- [AD 2007-04-19 R1](https://openairdocs.org/ad/2007-04-19-R1): SAP cylinder assemblies · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 314 more. Effective May 7, 2007
- [AD 2006-12-07](https://openairdocs.org/ad/2006-12-07): ECi cylinder assemblies · Aerostar AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 386 more. Effective Jul 11, 2006
- [AD 2006-10-21](https://openairdocs.org/ad/2006-10-21): ECi connecting rods · Engine Components Reciprocating Engine Connecting Rods, AEIO-360-B1B, AEIO-360-B1D and 171 more. Effective Jun 22, 2006
- [AD 2005-19-11](https://openairdocs.org/ad/2005-19-11): Crankshafts · Lycoming Engines AEIO-360-A1B6, AEIO-360-A1E6, AEIO-540-D4A5 and 59 more. Effective Oct 21, 2005
- [AD 2005-12-06](https://openairdocs.org/ad/2005-12-06): Riveted-impulse coupling assemblies and snap-ring coupling assemblies · Lycoming Engines AEIO-540-D4A5, AEIO-540-D4B5, AEIO-540-D4C5 and 154 more. Effective Jul 19, 2005
- [AD 2004-10-14](https://openairdocs.org/ad/2004-10-14): Crankshaft gear · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 642 more. Effective Jun 25, 2004
- [AD 2004-05-24](https://openairdocs.org/ad/2004-05-24): Zinc-plated Crankshaft Gear Retaining Bolts · Lycoming Engines AEIO-540-D4A5, AEIO-540-D4B5, AEIO-540-D4C5 and 161 more. Effective Mar 30, 2004
- [AD 2002-12-07](https://openairdocs.org/ad/2002-12-07): Oil Filter Converter Plate Gasket or the Converter Plate Kit · Lycoming Engines HIO-360-E1AD, HIO-360-E1BD, HIO-360-F1AD and 95 more. Effective Jul 3, 2002
- [AD 99-04-04](https://openairdocs.org/ad/99-04-04): Impulse Coupling Pawl · Lycoming Engines IO-540-K1A5, IO-540-K1B5, IO-540-K1G5 and 6 more. Effective Feb 25, 1999
- [AD 99-03-05](https://openairdocs.org/ad/99-03-05): Crankshaft Gear Retaining Bolts · Lycoming Engines O-540-F1B5. Effective Feb 18, 1999
- [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 97-15-11](https://openairdocs.org/ad/97-15-11): Cylinder kits · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 538 more. Effective Aug 12, 1997
- [AD 96-23-03](https://openairdocs.org/ad/96-23-03): High pressure fuel pumps · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 174 more. Effective Dec 23, 1996
- [AD 96-09-10](https://openairdocs.org/ad/96-09-10): Oil pump · Lycoming Engines AEIO-320-E1A, AEIO-320-E1B, AEIO-320-E2A and 334 more. Effective Jul 15, 1996
- [AD 95-26-02](https://openairdocs.org/ad/95-26-02): Aviation Gasoline · Lycoming Engines IO-320-B1A, IO-320-B1B, IO-320-B1C and 182 more. Effective Jan 24, 1996
- [AD 95-07-01](https://openairdocs.org/ad/95-07-01): Connecting Rod Bolt · Lycoming Engines AEIO-360-A1E, AEIO-360-B1G6, AEIO-360-H1A and 177 more. Effective Apr 12, 1995
- [AD 92-12-05](https://openairdocs.org/ad/92-12-05): Piston Pins · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 532 more. Effective Jul 10, 1992
- [AD 87-10-06 R1](https://openairdocs.org/ad/87-10-06-R1): Rocker Arm Assembly · Lycoming Engines IO-360-B4, IVO-360-A1A, O-340-A1A and 243 more. Effective Sep 1, 1989
- [AD 89-04-02](https://openairdocs.org/ad/89-04-02): Carburetors · Continental Motors O-470-11, O-470-11-CI, O-470-11B and 175 more. Effective Mar 8, 1989
- [AD 79-08-06](https://openairdocs.org/ad/79-08-06): Carburetors · Lycoming Engines O-540-L3C5D and Carburetors. Effective Apr 25, 1979
- [AD 75-08-09](https://openairdocs.org/ad/75-08-09): Oil Pump Drive Shaft · Lycoming Engines AEIO-360-A1B, AEIO-360-A1B6, AEIO-360-A1C and 365 more. Effective Aug 18, 1977
- [AD 73-23-01](https://openairdocs.org/ad/73-23-01): Piston Pin Assembly · Lycoming Engines AIO-360-A1A, AIO-360-A1B, AIO-360-A2A and 215 more. Effective Jan 13, 1977
- [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 66-06-03](https://openairdocs.org/ad/66-06-03): Connecting Rod Assemblies · Lycoming Engines GO-435-C2 (O-435-17), GO-435-C2A, GO-435-C2A2 and 317 more. Effective Jan 16, 1969
- [AD 66-20-04](https://openairdocs.org/ad/66-20-04): Oil Filter Adapter Gasket · Lycoming Engines IO-320-A1A, IO-320-A2A, IO-320-B1A and 121 more. Effective Aug 27, 1966
- [AD 66-14-03](https://openairdocs.org/ad/66-14-03): Crankshaft Idler Shafts · Lycoming Engines O-540-B2B5. Effective Jul 9, 1966
- [AD 64-16-05](https://openairdocs.org/ad/64-16-05): AC Pumps · Lycoming Engines HIO-360-B1A, HIO-360-B1B, IO-320-B1A and 86 more. Effective Jul 10, 1964
- [AD 63-22-03](https://openairdocs.org/ad/63-22-03): Carburetors · Continental Motors GO-300-A, GO-300-B, GO-300-C and 143 more. Effective Dec 2, 1963
- [AD 63-14-03](https://openairdocs.org/ad/63-14-03): Oil Pump Drive Shaft · Lycoming Engines IO-540-A1A5, IO-540-B1A5, IO-540-B1B5 and 21 more. Effective Jul 6, 1963
- [AD 59-10-07](https://openairdocs.org/ad/59-10-07): Cylinder Baffle Clamps · Lycoming Engines GO-480-A1A, GO-480-B, GO-480-B1A6 and 58 more
- [AD 2024-21-02](https://openairdocs.org/ad/2024-21-02) (historical): Engine (Reciprocating) · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 548 more. Effective Dec 5, 2024
- [AD 2008-19-05](https://openairdocs.org/ad/2008-19-05) (historical): Parallel Valve'' reciprocating engines · Engine Components Reciprocating Engine Cylinder Assemblies, AEIO-320-D1B, AEIO-320-D2B and 262 more. Effective Oct 20, 2008
- [AD 2006-20-09](https://openairdocs.org/ad/2006-20-09) (historical): Certain crankshafts replacing · Lycoming Engines AEIO-360-A1B6, AEIO-360-A1E6, AEIO-540-D4A5 and 82 more. Effective Nov 3, 2006
- [AD 2005-26-10](https://openairdocs.org/ad/2005-26-10) (historical): ECi cylinder assemblies. · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 413 more. Effective Jan 31, 2006
- [AD 81-18-04 R2](https://openairdocs.org/ad/81-18-04-R2) (historical): Engine Oil Pump Driven Impeller and Shaft · Textron Lycoming, AVCO AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 376 more. Effective Jun 7, 1982
- [AD 2000-18-53](https://openairdocs.org/ad/2000-18-53) (historical): Oil Filter Converter Plate Gaskets · Textron Lycoming, AVCO AEIO-540, IO-360-A1B6D, IO-360-A1D6D and 73 more

## Registered aircraft by registry model (OpenAirDocs)

- [Lycoming 0-540 series](https://openairdocs.org/engine/lycoming-0-540-series): 5,228 aircraft (registry code 41532)
- [Lycoming O-540-F1B5](https://openairdocs.org/engine/lycoming-o-540-f1b5): 299 aircraft (registry code 42353)
- [Lycoming O-540-B4B5](https://openairdocs.org/engine/lycoming-o-540-b4b5): 40 aircraft (registry code 42340)
- [Lycoming O-540-B2B5](https://openairdocs.org/engine/lycoming-o-540-b2b5): 27 aircraft (registry code 42337)
- [Lycoming O-540-J3C5D](https://openairdocs.org/engine/lycoming-o-540-j3c5d): 24 aircraft (registry code 42361)
- [Lycoming O-540-E4B5](https://openairdocs.org/engine/lycoming-o-540-e4b5): 21 aircraft (registry code 42342)
- [Lycoming O-540-A1D5](https://openairdocs.org/engine/lycoming-o-540-a1d5): 18 aircraft (registry code 42324)
- [Lycoming O-540-L3C5D](https://openairdocs.org/engine/lycoming-o-540-l3c5d): 18 aircraft (registry code 42364)
- [Lycoming O-540 series](https://openairdocs.org/engine/lycoming-o-540-series): 17 aircraft (registry code 42713)
- [Lycoming O-540-E4C5](https://openairdocs.org/engine/lycoming-o-540-e4c5): 15 aircraft (registry code 42391)
- [Lycoming O-540-B2C5](https://openairdocs.org/engine/lycoming-o-540-b2c5): 13 aircraft (registry code 42338)
- [Lycoming O-540-J1A5D](https://openairdocs.org/engine/lycoming-o-540-j1a5d): 11 aircraft (registry code 42354)
- [Lycoming O-540-E4A5](https://openairdocs.org/engine/lycoming-o-540-e4a5): 9 aircraft (registry code 42341)
- [Lycoming O-540-A1A5](https://openairdocs.org/engine/lycoming-o-540-a1a5): 7 aircraft (registry code 42320)
- [Lycoming O-540-A4D5](https://openairdocs.org/engine/lycoming-o-540-a4d5): 7 aircraft (registry code 42330)
- [Lycoming O-540-G1A5](https://openairdocs.org/engine/lycoming-o-540-g1a5): 6 aircraft (registry code 42344)
- [Lycoming O-540-J3A5D](https://openairdocs.org/engine/lycoming-o-540-j3a5d): 6 aircraft (registry code 42358)
- [Lycoming O-540-A1A](https://openairdocs.org/engine/lycoming-o-540-a1a): 4 aircraft (registry code 42319)
- [Lycoming O-540-A1B5](https://openairdocs.org/engine/lycoming-o-540-a1b5): 4 aircraft (registry code 42321)
- [Lycoming O-540-A1C5](https://openairdocs.org/engine/lycoming-o-540-a1c5): 4 aircraft (registry code 42322)
- [Lycoming O-540-A2B](https://openairdocs.org/engine/lycoming-o-540-a2b): 2 aircraft (registry code 42325)
- [Lycoming O-540-A4B5](https://openairdocs.org/engine/lycoming-o-540-a4b5): 2 aircraft (registry code 42328)
- [Lycoming O-540-A1D](https://openairdocs.org/engine/lycoming-o-540-a1d): 1 aircraft (registry code 42323)
- [Lycoming O-540-A4C5](https://openairdocs.org/engine/lycoming-o-540-a4c5): 1 aircraft (registry code 42329)
- [Lycoming O-540-B1A5](https://openairdocs.org/engine/lycoming-o-540-b1a5): 1 aircraft (registry code 42332)
- [Lycoming O-540-B1B5](https://openairdocs.org/engine/lycoming-o-540-b1b5): 1 aircraft (registry code 42333)
- [Lycoming O-540-J2A5D](https://openairdocs.org/engine/lycoming-o-540-j2a5d): 1 aircraft (registry code 42355)
- [Lycoming O-540-A3D5](https://openairdocs.org/engine/lycoming-o-540-a3d5): 0 aircraft (registry code 42326)
- [Lycoming O-540-A4A5](https://openairdocs.org/engine/lycoming-o-540-a4a5): 0 aircraft (registry code 42327)
- [Lycoming O-540-B1D5](https://openairdocs.org/engine/lycoming-o-540-b1d5): 0 aircraft (registry code 42334)
- [Lycoming O-540-B2A5](https://openairdocs.org/engine/lycoming-o-540-b2a5): 0 aircraft (registry codes 42335, 42336)
- [Lycoming O-540-B4A5](https://openairdocs.org/engine/lycoming-o-540-b4a5): 0 aircraft (registry code 42339)
- [Lycoming O-540-D1A5](https://openairdocs.org/engine/lycoming-o-540-d1a5): 0 aircraft (registry code 42331)
- [Lycoming O-540-F1A5](https://openairdocs.org/engine/lycoming-o-540-f1a5): 0 aircraft (registry code 42352)
- [Lycoming O-540-G2A5](https://openairdocs.org/engine/lycoming-o-540-g2a5): 0 aircraft (registry code 42345)
- [Lycoming O-540-H1A5](https://openairdocs.org/engine/lycoming-o-540-h1a5): 0 aircraft (registry code 42346)
- [Lycoming O-540-H1A5D](https://openairdocs.org/engine/lycoming-o-540-h1a5d): 0 aircraft (registry code 42348)
- [Lycoming O-540-H1B5D](https://openairdocs.org/engine/lycoming-o-540-h1b5d): 0 aircraft (registry code 42350)
- [Lycoming O-540-H2A5](https://openairdocs.org/engine/lycoming-o-540-h2a5): 0 aircraft (registry code 42347)
- [Lycoming O-540-H2A5D](https://openairdocs.org/engine/lycoming-o-540-h2a5d): 0 aircraft (registry code 42349)
- [Lycoming O-540-J1B5D](https://openairdocs.org/engine/lycoming-o-540-j1b5d): 0 aircraft (registry code 42356)
- [Lycoming O-540-J1C5D](https://openairdocs.org/engine/lycoming-o-540-j1c5d): 0 aircraft (registry code 42359)
- [Lycoming O-540-J1D5D](https://openairdocs.org/engine/lycoming-o-540-j1d5d): 0 aircraft (registry code 42362)
- [Lycoming O-540-J2B5D](https://openairdocs.org/engine/lycoming-o-540-j2b5d): 0 aircraft (registry code 42357)
- [Lycoming O-540-J2C5D](https://openairdocs.org/engine/lycoming-o-540-j2c5d): 0 aircraft (registry code 42360)
- [Lycoming O-540-J2D5D](https://openairdocs.org/engine/lycoming-o-540-j2d5d): 0 aircraft (registry code 42363)

## STCs approved under this data sheet (59, first 50)

- [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 SE00825WI](https://openairdocs.org/stc/SE00825WI): Installation of Specialty Products Spin-on oil filter on Lycoming Engines.. B & C Specialty Products Inc.
- [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 SE01954SE](https://openairdocs.org/stc/SE01954SE): Installation of engine crankcase seal.. Ly-Con Rebuilding Company
- [STC SE02352CH](https://openairdocs.org/stc/SE02352CH): Installation of Challenger cleanable oil filter assembly. Challenger Aviation Products Inc.
- [STC SE00939WI](https://openairdocs.org/stc/SE00939WI): Installation of B&C Specialty Products Model BC 315-( ) Starter on Lycoming engines.. B & C Specialty Products Inc.
- [STC SE2388CE](https://openairdocs.org/stc/SE2388CE): Installation of B&C Speciality Products lightweight (10.2) pounds) engine starter, part number BC-315-100-1 (12 volts)
or part number BC-315-100-3 (24 volts). 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 SE40WE](https://openairdocs.org/stc/SE40WE): Installation of two Roto-Master Turbochargers Model No. 3DT5FF10J2, P/N 600572-00 (formerly Rayjay Model No. 315F10 P/N RJ0080-100, -101, or - 102). TALCO Aviation
- [STC SE01436LA](https://openairdocs.org/stc/SE01436LA): Installation of Firewall Forward Technologies LLC modified camshaft. Centri-lube Technologies LLC
- [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 SE01537AT](https://openairdocs.org/stc/SE01537AT): Replace counterweights on Lycoming O-540-A1A5, -A1B5, -A1C5, -A1D5, and IO-540-C1B5 engines.. Whelen Aerospace Technologies
- [STC SE8628SW](https://openairdocs.org/stc/SE8628SW): Installation of oil nozzles for lubrication of cam and filters.. Cygnet Aerospace Corp
- [STC SE1339SW](https://openairdocs.org/stc/SE1339SW): Modify pistons to Drawings 11007 and 11015; piston rings. Continental Motors, Inc.
- [STC SE4408SW](https://openairdocs.org/stc/SE4408SW): Miscellaneous engine cylinder replacement parts.. Continental Motors, Inc.
- [STC SE8776SW](https://openairdocs.org/stc/SE8776SW): Installation of coated cylinders and piston rings.. Continental Motors, Inc.
- [STC SE00218NY](https://openairdocs.org/stc/SE00218NY): Replacement of Lycoming starter with SKY-TEC 12 volt starter installed.. Hartzell Engine Technologies, LLC
- [STC SE00226NY](https://openairdocs.org/stc/SE00226NY): Replacement of Lycoming starter with SKY-TEC 24-volt starter Models 149-24HT and 122-24HT. Approval limited to 24-volt DC source available to the starter.. Hartzell Engine Technologies, LLC
- [STC SE00357NY](https://openairdocs.org/stc/SE00357NY): Replacement of Lycoming starter with SKY-TEC 24-volt starter installed.. Hartzell Engine Technologies, LLC
- [STC SE04241AT](https://openairdocs.org/stc/SE04241AT): Installation of (Bendix) Precision Airmotive fuel injection system which replaces the original Marvel Schebler carburetor model MA-4-5, P/N 10-5042. Nicky L. Watts
- [STC SE2901NM](https://openairdocs.org/stc/SE2901NM): Lycoming valve cover gasket. Real Gaskets Tennessee
- [STC SE02051AK](https://openairdocs.org/stc/SE02051AK): Grind nitrided high compression cylinder barrels to plus 0.010 overside and install P10 piston, P10 compression rings, and P10 oil rings.. Custom Aircraft Inc
- [STC SE5869SW](https://openairdocs.org/stc/SE5869SW): Install turbosupercharger.. Desert Wind Air Service
- [STC SE00768CH](https://openairdocs.org/stc/SE00768CH): Replace Slick 6000, 6100, 6200 and 6300 series  magnetos and TCM/Bendix S6-20, S6-200 and S6-1200 series magnetos with the Champion Limited Authority Spark Advance Regulator (LASARTM) ignition system. Champion Aerospace LLC
- [STC SE8193SW](https://openairdocs.org/stc/SE8193SW): Grind nitriden high compression cylinder barrles to plus .010 oversize and install SL75089 P10 piston, SL74242 P10 compression ring, and SL73857 P10 oil ring.. Superior Air Parts Inc.
- [STC SE922GL](https://openairdocs.org/stc/SE922GL): Installation of a Shadin Company fuel flow transducer.. Shadin Avionics
- [STC SE7734SW](https://openairdocs.org/stc/SE7734SW): Modification of engine for operation with ethanol fuel.. Shauck Dr Maxwell E Jr.
- [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 SE956GL](https://openairdocs.org/stc/SE956GL): Superseded by STC SE01943CH.  Add approved fuel: unleaded automotive gasoline, 87 minimum antiknock index.. EAA Aviation Foundation
- [STC SE1779NM](https://openairdocs.org/stc/SE1779NM): Installation of Precise Flight, Inc. Standby Vacuum System SVS III. Precise Flight Inc
- [STC SE17WE](https://openairdocs.org/stc/SE17WE): Installation of AiResearch Turbosupercharger 406330.. GE Engine Services-Corporate Aviation Inc.
DBA Garrett Aviation Services
- [STC SE5743NM](https://openairdocs.org/stc/SE5743NM): Intallation of adapter for externally mounted oil filter.. Aviation Development Corporation
- [STC SE00337NY](https://openairdocs.org/stc/SE00337NY): Installation of 'second wind' auxiliary vacuum system carburetor adapter assembly. To be performed with STC SA00336NY.. Flight Life, Inc.
- [STC SE1433GL](https://openairdocs.org/stc/SE1433GL): Convert Lycoming aircraft engine Model O-540-B2B5 or O-540-B2C5 rated at 235 hp at 2575 rpm to a
O-540-B2B5-C-AlD5 or O-540-B2C5-C-A1D5 rated at 250 hp at 2575 rpm maximum. Kron Howard
- [STC SE00890LA](https://openairdocs.org/stc/SE00890LA): Installation of Nickson's cylinder barrels on Lycoming reciprocating engine models.. Nickson's Machine Shop Inc
- [STC SE01949AT](https://openairdocs.org/stc/SE01949AT): Engine modification to convert Lycoming model O-540-D4A5 and install engine turbonormalization systme which includes 2 ea. Rotomaster model 30T5FF10J2 turbochargers (part number 600572-00) and 1 ea. Harrison Intercooler (part number KA-128).. K-Aero
- [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 SE09492SC](https://openairdocs.org/stc/SE09492SC): Installation and usage of Exxon 20W50 multigrade aircraft engine oil conforming to Exxon Oil formulation WS-3013.. Exxon Company USA
- [STC SE00663WI](https://openairdocs.org/stc/SE00663WI): Add the following approved fuel: Leaded and unleaded automotive gasoline, 91 minimum antiknock index. Intermixing with aviation gasoline also approved.. Petersen Aviation Inc
- [STC SE8023SW](https://openairdocs.org/stc/SE8023SW): Installation and usage of AEROSHELL. Shell Development Co
- [STC SE2653CE](https://openairdocs.org/stc/SE2653CE): Add leaded and unleaded automotive gasoline, 91 minimum antiknock index (RON+MON)/2 per ASTM Specification D-439.. Petersen Aviation Inc
- [STC SE741NE](https://openairdocs.org/stc/SE741NE): Installation of 'Auto-Vac-4' primary vacuum system.. Raymond Ives
- [STC SE452NE](https://openairdocs.org/stc/SE452NE): Installation and usage of 'Mobil AV 1' aviation oil.. Mobil Research & Development Corp
- [STC SE318NE](https://openairdocs.org/stc/SE318NE): Installation of 'auto-vac-2' auxiliary instrument vacuum system.. Raymond Ives
- [STC SE3552NM](https://openairdocs.org/stc/SE3552NM): Modification of crankshaft damper configuration.. Johnston Aircraft Svc, Inc
- [STC SE3360NM](https://openairdocs.org/stc/SE3360NM): Installation of a vacuum pump on the hydraulic pump pad.. Ron & John's Comanche Service
- [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

All 59: https://openairdocs.org/tcds/E-295/stcs.md

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.