# TCDS E-276: Lycoming Engines

- Type: Type certificate data sheet
- Status: Current
- Holder: Lycoming Engines
- Revision: 4
- Revised: June 23, 2010
- Product: Engine
- Data sheet PDF: https://openairdocs.org/files/sha256/33/5d/335d9950ea907db19659717e5b8c651e63d0b092bfd9235ce69a9011d537f63d
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/ACFEF3B117D630E9862577CF004C988B.0001
- Page: https://openairdocs.org/tcds/E-276

## Models (2)

As the data sheet lists them.

- GSO-435-B2
- GSO-435-B

## 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 
Rev No. 4 4 
 
FEDERAL AVIATION AGENCY 
E-276 
Revision 4 
Lycoming Engines 
GSO-435-B 
GSO-435-B2 
 
June 23, 2010 
 
TYPE CERTIFICATE DATA SHEET NO. E-276 
 
Engines of models described herein conforming with this specification and approved data on file with the Federal Aviation Agency meet 
the minimum standards for use in certified aircraft in accordance with pertinent aircraft specifications and applicable portions of the Civil 
Air Regulations provided they are installed, operated, and maintained as prescribed by the approved manufacturer's manuals. 
 
Type Certificate Holder Lycoming Engines 
 An Operating Division of AVCO Corporation 
 Williamsport, Pennsylvania 17701 
 
Type Certificate Holder Record Lycoming Division, AVCO Manufacturing Corporation transferred TC 284 to Lycoming 
Engines, An Operating Division of AVCO Corporation on June 23, 2010 
 
   
Model     Lycoming GSO-435-B 
GSO-435-B2 
Type        6HOA      - reduction gear ratio 77:120 
Rating  
Max. continuous, hp, rpm, in.Hg., at:  
    Rated press. alt (ft.) 260-3050-35.5-6600 
    Sea level press. alt. (ft.) 260-3050-36.7-  S.L. 
  Takeoff (5 min.), hp, rpm, in.Hg., at:  
    Rated press, alt. (ft.) 300-3400-38.5-6400 
    Sea level press, alt. (ft.) 300-3400-39.5-  S.L. 
  Fuel (Min. grade aviation gasoline) 91/98 
  Bore and stroke, in.  4.875 X 3.875 
  Displacement, cu. in. 434 
  Supercharging ratio  8.3:1 
  Compression ratio 7.3:1 
  Weight (dry), lbs. 488 (-B),  496 (-B2) 
  C.G. location (dry)  
    From front face of thrust nut, in. 22.91 (-B), 22.60 (-B2) 
    Off propeller shaft C.L., in. 0.54 (-B), 0.51 (-B) below 
    0.26 (-B2), 0.22 (-B) left 
  Propeller shaft, SAE No. 20 Spline 
  Carburetion*  PS-7BDE 
  Ignition, Dual+ S6RN-51 & S6RN-50 magneto 
  Timing,  BTC 25 
  Spark plugs Auto Lite SH-2K, SH-2M, 
SH-20, SH-20A 
NOTES 1, 2, 3, 4 
 
+TCM formerly Bendix Scintilla 
*PAC formerly Bendix 
 
   
 
Certification basis  Type Certificate No. 276 
Production basis  Production Certificate No. 3 
 
 
 
NOTE 1.  Maximum permissible temperatures:

E-276  2 
 
 
Cylinder Head 
(Well type) 
 
Cylinder Base 
 
Oil Inlet 
475F 325 F 225 F 
 
NOTE 2. 
 Min . Max.  
Fuel Pressure Limits 9 psi 15 psi 
Oil Pressure Limits (Normal Operation) 
                                (Idling 25 psi) 
65 psi 85 psi 
  
 
NOTE 3.  The following accessory provisions are provided: 
 
 
 
 
Accessory 
 
 
GSO-435-B 
GSO-435-B2 
Direction of 
Rotation 
Facing  
Engine Pad 
 
Speed X 
Crank Shaft 
RPM 
 
 
Maximum Torque 
(in.-lb.) 
 
Maximum Overhang 
Moment  
(in.-lb.) 
    Cont. Static  
Starter X C 1.000:1 - 12000 300 
Generator X C 2.600:1 500 2200 400 
Fuel Pump X CC .803:1 25 450 25 
Vac. Pump X C 1.219:1 200 800 25 
Hyd. Pump X C 1.083:1 300 1650 75 
Tachometer X C .50:1 7 50 - 
Prop. Governor   X* C .801:1 125 825 - 
 *GSO-435-B2 Model only. 
 
NOTE 4.  Model GSO-435-B2 is similar to Model GSO-435-B except it incorporates provisions for nose mounted  
                propeller governor. 
 
 
 
....END....
```

## ADs (5, in force first)

- [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 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 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 90-04-06 R1](https://openairdocs.org/ad/90-04-06-R1): Propeller Governor External Oil Line · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 427 more. Effective May 28, 1991
- [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

## Registered aircraft by registry model (OpenAirDocs)

- [Lycoming GSO-435-B](https://openairdocs.org/engine/lycoming-gso-435-b): 0 aircraft (registry code 42190)
- [Lycoming GSO-435-B2](https://openairdocs.org/engine/lycoming-gso-435-b2): 0 aircraft (registry code 42191)

## STCs approved under this data sheet (12)

- [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 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 SE1779NM](https://openairdocs.org/stc/SE1779NM): Installation of Precise Flight, Inc. Standby Vacuum System SVS III. Precise Flight 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 SE8023SW](https://openairdocs.org/stc/SE8023SW): Installation and usage of AEROSHELL. Shell Development Co
- [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 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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