# TCDS 1E11: Lycoming Engines

- Type: Type certificate data sheet
- Status: Current
- Holder: Lycoming Engines
- Revision: 6
- Revised: June 23, 2010
- Product: Engine
- Certification basis: CAR 13
- Registered aircraft: 10, by the registry models matched to it (OpenAirDocs)
- Data sheet PDF: https://openairdocs.org/files/sha256/a5/13/a5132e36a1fe655f07e934ccf0930881d7fc08b35d6dc4dc2de6d40c9d37e610
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/B06ADDF25F2AC653862577CF0051C60E.0001
- Page: https://openairdocs.org/tcds/1E11

## Models (6)

As the data sheet lists them.

- IGO-540-B1B
- IGO-540-B1A
- IGO-540-B1C
- IGO-540-A1A
- IGO-540-A1C
- IGO-540-A1B

## 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. 1 2 3 
Rev. No. 6 6 6 
Reformatted 12/93 
 
DEPARTMENT OF TRANSPORTATION 
FEDERAL AVIATION ADMINISTRATION 
1E11 
Revision 6 
LYCOMING ENGINES 
IGO-540-A1A 
IGO-540-A1B 
IGO-540-A1C 
IGO-540-B1A 
IGO-540-B1B 
IGO-540-B1C 
 
June 23, 2010 
 
TYPE CERTIFICATE DATA SHEET NO. 1E11 
 
Engines of models described herein conforming with this data sheet (which is part of type certificate No. 1E11) 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 
 Williamsport, Pennsylvania 17701 
 
Type Certificate Holder Record Lycoming Division., AVCO Corp., Williamsport, PA. transferred TC 1E-11 to Lycoming 
Engines, An Operating Division of AVCO Corporation on June XX, 2010 
 
    
Model:                  Lycoming IGO-540-A1A, -A1B -B1A, -B1B, -B1C IGO-540-A1C 
Type: 6HOA, reduction gear ratio 77:120 -  - 
Rating:   
         Maximum continuous, hp., r.p.m., full throttle at:   
                 Sea level pressure altitude 325-3000-S.L. 325-3000-S.L. 
         Takeoff, 5 min., hp., r.p.m., full throttle at:   
   Sea Level Pressure a ltitude 350-3400-S.L. 350-3400-S.L. 
Fuel (minimum grade aviation gasoline) 100/130 -  - 
Lubricating oil (lubricants should conform to the 
Specifications as listed or to subsequent  revisions 
thereto.) 
Lycoming Spec. No. 301-G* -  - 
Bore and stroke, in. 5.125 x 4.375 -  - 
Displacement, cu. in. 541.5 -  - 
Compression ratio 8.7:1 -  - 
Weight (dry), lb. See NOTE 7 -  - 
C.G. location   
 From front face of thrust nut face, in. 19.59 20.23 
 Off crankshaft center line, in. .56 be low & .21 left .41 below & .26 right 
Propeller shaft, SAE No. 30 spline -  - 
Crankshaft dampers (torsional) Five  3rd order & one 6th order -  - 
Fuel injection See NOTE 7 -  - 
Ignition, dual See NOTE 7 -  - 
Timing, °BTC 25 -  - 
Spark plugs See NOTE 4 -  - 
Oil sump capacity Dry sump -  - 
NOTES:  1,2,3,4,5,6,7,8 - - 
"-  -"  indicates "same as preceding model" 
"—"  indicates "does not apply" 
* See latest edition of Lycoming Service Instruction 1014

1E11-5 
Page 2 
 
Certification basis: 
   Date of Date Type Certificate 
Regulations & Amendments Model  Application  No. 1E11 Issued/Revised  
 
Car 13 Effective June 15, 1956 IGO- 540-B1A July 5, 1960 October 28, 1960 
  As Amended by 13-1, 13-2 IGO-540-A1A June 2, 1961 August 22, 1961 
                            13-3 IGO-540-A1B July 10, 1961 August 22, 1961 
  IGO-540-B1B July 10, 1961 August 22, 1961 
                            13-4 IGO-540-B1C April 18, 1963 May 20, 1963 
  IGO-540-A1C February 18, 1972 March 14, 1972 
 
Production basis:  Production Certificate No. 3 
 
NOTE 1. Maximum permi ssible temperature: 
 
  Cylinder Head Cylinder   Oil 
 (Well type thermocouple)    base   Inlet  
 475°F (500°F for -A1C model) (NOTE 8)  235°F 
 
NOTE 2. Fuel pressure limits:      Injector in 
  Min.  Max.  Idle (min.)   Idle cutoff  
 Inlet to injector (except -A1C model) 20 p.s.i. 26 p.s.i.      —        — 
 -A1C 25 p.s.i 40 p.s.i. 12 p.s.i. 55 p.s.i. (max.) 
 Oil pressure limits: 
   (Normal operation)  65 p.s.i. 85 p.s.i. 
   (Idling) 25 p.s.i. 
 
NOTE 3. The following accessory drives are provided: 
 
 
 
Accessory 
-A1A, -A1B 
-B1A, -B1B,  
-B1C 
 
 
A1C 
Rotation 
Pacing 
Drive Pad 
Speed Ratio 
to 
Crankshaft 
Maximum Torque 
(in. - lb.) 
Cont.         Static 
Max. Overhang 
Moment 
(in. - lb.) 
Starter * *  C 1.000:1 — 12,000 300 
Generator * —  C 2.600:1 500 2,200 400 
Alternator — *  C 2.600:1 500 2,200 400 
Vacuum Pump * *  C 1.083:1 200 800 25 
Hydraulic Pump * *  C 1.083:1 400 1,650 175 
Tachometer * * CC .500:1 7 50 — 
Propeller Governor * —  C .779:1 125 1,200 25 
Fuel Pump * *  C 1.000:1 25 450 25 
        
 
*  Standard 
**  Optional 
"C"  Clockwise 
"CC"  Counter Clockwise 
 
NOTE 4. Spark plugs:  See latest revision of Lycomi ng Service Instruction No. 1042 for approved equipment. 
 
NOTE 5. This engine incorporates provisions for absorbing pr opeller thrust in both tractor and pusher type installations.

1E11-5 
Page 3 
 
NOTE 6. These engines incorporate th e following additional characteristics: 
 
  IGO-540 Models  
 
  -A1A Basis model. 
 
  -A1B Similar to -A1A except inco rporates low tension ignition system. 
 
  -A1C Similar to -A1A except for fuel in jector, magnetos, fuel pump, and alternator. 
 
  -B1A Similar to -A1A except has exhaust ports  on the top side of the cylinders and updraft  
   cooling provisions. 
 
  -B1B Similar to -B1A except inco rporates low tension ignition system. 
 
  -B1C Similar to -B1A except does not have  servo-bleed in Injector servo-vent line  
   and requires external servo-fuel restrictor  in servo-vent line of aircraft fuel system. 
 
NOTE 7. IGO-540 Models  Weight (dry lb.  Fuel Injection*  Ignition, dual*  
 
  -A1A 506 RS10ED1 S6RN-204, S6RN-200 
  -A1B 517 RS10ED1 S6RN-604, S6RN-600 
  -A1C 509 RSA10DB1    S6RN-1208, S6RN-1209 
  -B1A 500 RS10ED2 S6RN-204, S6RN-200 
  -B1B 511 RS10ED2 S6RN-604, S6RN-600 
  -B1C 500 RS10ED2 S6RN-204, S6RN-200 
 
 
  * Precision Airmotive LLC was Bendix 
  + TCM was Bendix 
 
 
NOTE 8. Cylinder base temperature limits are not applicable to e ngine models which incorporate internal piston cooling oil jets. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
.....END.....
```

## ADs (22, in force first)

- [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 2015-19-07](https://openairdocs.org/ad/2015-19-07): Fuel injector fuel lines · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1B and 187 more. Effective Nov 3, 2015
- [AD 2012-03-06](https://openairdocs.org/ad/2012-03-06): Fuel servo diaphragm · Continental Motors 6-260-A, 6-285-A, 6-285-B and 482 more. Effective Feb 24, 2012
- [AD 2009-02-03](https://openairdocs.org/ad/2009-02-03): Fuel injection servos · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 261 more. Effective Feb 9, 2009
- [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 2003-14-03](https://openairdocs.org/ad/2003-14-03): Rotary fuel pumps · Lycoming Engines AEIO-540-D4A5, AEIO-540-D4B5, AEIO-540-D4C5 and 262 more. Effective Aug 14, 2003
- [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 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 81-03-05](https://openairdocs.org/ad/81-03-05): Mixture Control Shaft Assembly · Lycoming Engines IGO-540-A1A, IGO-540-B1A, IGO-540-B1C and 9 more. Effective Feb 11, 1981
- [AD 79-04-05](https://openairdocs.org/ad/79-04-05): Regulator Diaphragm Stem Assembly · Lycoming Engines AEIO-320-D1B, AEIO-320-E1A, AEIO-320-E1B and 215 more. Effective Sep 26, 1979
- [AD 78-23-10](https://openairdocs.org/ad/78-23-10): Center Body Bellows Seal Assembly · Lycoming Engines AEIO-320-D1B, AEIO-320-E1A, AEIO-320-E1B and 218 more. Effective Nov 7, 1978
- [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 75-09-15](https://openairdocs.org/ad/75-09-15): Fuel Starvation To The Engine · Lycoming Engines AIO-320-A1A, AIO-320-A1B, AIO-320-A2A and 130 more. Effective Apr 30, 1975
- [AD 74-13-05](https://openairdocs.org/ad/74-13-05): Connecting Rod Assemblies · Lycoming Engines IGO-540-A1A, IGO-540-A1B, IGO-540-A1C and 10 more. Effective Jun 21, 1974
- [AD 69-25-08](https://openairdocs.org/ad/69-25-08): Reduction Gear Assemblies · Lycoming Engines GO-435-C2A, GO-435-C2A2, GO-480-A1A and 61 more. Effective Feb 19, 1970
- [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 62-23-05](https://openairdocs.org/ad/62-23-05): Propeller Shaft Oil Seal Rings · Lycoming Engines GO-435-C2 (O-435-17), GO-435-C2A, GO-435-C2A2 and 49 more. Effective Nov 14, 1962
- [AD 2011-26-04](https://openairdocs.org/ad/2011-26-04) (historical): Externally mounted fuel injector fuel lines · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1B and 186 more. Effective Jan 25, 2012
- [AD 2008-14-07](https://openairdocs.org/ad/2008-14-07) (historical): Externally mounted fuel injector fuel lines · Textron Lycoming, AVCO AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1B and 185 more. Effective Aug 14, 2008
- [AD 2008-08-14](https://openairdocs.org/ad/2008-08-14) (historical): Fuel injection servo plugs · Superior Air Parts AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 242 more. Effective Apr 29, 2008
- [AD 2002-26-01](https://openairdocs.org/ad/2002-26-01) (historical): Fuel injector fuel lines · Textron Lycoming, AVCO IGO-480-A1B6, IGO-540-B1A, IGO-540-B1C and 178 more. Effective Jan 31, 2003
- [AD 98-18-12](https://openairdocs.org/ad/98-18-12) (historical): Fuel Pump · Textron Lycoming, AVCO AEIO-540-D4A5, AEIO-540-D4B5, AEIO-540-D4C5 and 249 more. Effective Sep 28, 1998

## Registered aircraft by registry model (OpenAirDocs)

- [Lycoming IGO-540-B1A](https://openairdocs.org/engine/lycoming-igo-540-b1a): 9 aircraft (registry code 41538)
- [Lycoming IGO-540-A1C](https://openairdocs.org/engine/lycoming-igo-540-a1c): 1 aircraft (registry code 41902)
- [Lycoming IGO-540-A1A](https://openairdocs.org/engine/lycoming-igo-540-a1a): 0 aircraft (registry code 41900)
- [Lycoming IGO-540-A1B](https://openairdocs.org/engine/lycoming-igo-540-a1b): 0 aircraft (registry code 41901)
- [Lycoming IGO-540-B1B](https://openairdocs.org/engine/lycoming-igo-540-b1b): 0 aircraft (registry code 41903)
- [Lycoming IGO-540-B1C](https://openairdocs.org/engine/lycoming-igo-540-b1c): 0 aircraft (registry code 41904)

## STCs approved under this data sheet (17)

- [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 SE03309CH](https://openairdocs.org/stc/SE03309CH): Installation of Engine Preheat Kit, p/n TSP6CYL-2927-115 for 115 volt application. Hartzell Propeller Inc.
- [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 SE8628SW](https://openairdocs.org/stc/SE8628SW): Installation of oil nozzles for lubrication of cam and filters.. Cygnet Aerospace Corp
- [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 SE7582SW](https://openairdocs.org/stc/SE7582SW): Grinding of high compression NITRIDED Cylinders to .010 oversize, as an alternative to chrome plating or rebarreling, and the installation of  SL10207 P10 Piston, SL74241 P10 Top and second compression ring, and SL 73857 P10 oil control ring. Superior Air Parts, Inc
- [STC SE1779NM](https://openairdocs.org/stc/SE1779NM): Installation of Precise Flight, Inc. Standby Vacuum System SVS III. Precise Flight Inc
- [STC SE00890LA](https://openairdocs.org/stc/SE00890LA): Installation of Nickson's cylinder barrels on Lycoming reciprocating engine models.. Nickson's Machine Shop 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 SE452NE](https://openairdocs.org/stc/SE452NE): Installation and usage of 'Mobil AV 1' aviation oil.. Mobil Research & Development 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 SE5924SW](https://openairdocs.org/stc/SE5924SW): Installation of stainless steel replacement exhaust studs on AVCO engines.. Perrigo & Steele Aircraft Engr Company
- [STC SE1445SO](https://openairdocs.org/stc/SE1445SO): Use of Aero-blend oil additive in Teledyne (non turbocharged) aircraft engines.. ProTec
- [STC SE128NE](https://openairdocs.org/stc/SE128NE): Use of AMS/OIL 15W 50 synthetic piston aircraft oil in Avco engines.. AMS/OIL
- [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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