Lycoming O-233

This article is about the 1940 carbureted aircraft engine. For the 2008 fuel-injected aircraft engine, see Lycoming IO-233.

O-233
Type	Piston aero engine
National origin	United States
Manufacturer	Lycoming Engines
First run	1940
Produced	1940-44
Number built	106

The Lycoming O-233 is a four-cylinder, air-cooled, horizontally opposed piston aircraft engine that was built by Lycoming Engines between 1940 and 1944.^[1]

Development

Lycoming applied for certification of the O-233 on 13 June 1940, with certification to CAR 13 (amended to 31 May 1938) granted on 16 August 1940. The O-233 had its type certificate cancelled on 25 February 1944 at serial number 106.^[1]

The FAA type certificate notes:

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 certificate). Detail specifications for these engines have been deleted from this data sheet.^[1]

Variants

O-233-A1: Sole variant, type certification cancelled 25 February 1944^[1]

Specifications (O-233-A1)

General characteristics

Type: Four-cylinder, horizontally opposed piston engine

Components

Cooling system: Air-cooled

References

1 2 3 4 Federal Aviation Administration (December 2003). "TYPE CERTIFICATE DATA SHEET NO. E-223" (PDF). Retrieved 2008-11-30.

External links

Wikimedia Commons has media related to Lycoming O-233.

Textron Lycoming - Manufacturer's home page

Lycoming aircraft engines

Opposed piston engines	O-145 O-233 IO-233 O-235 O-290 O-320 O-340 O-360 (O-360 variants) IO-390 O-435 O-480 O-540 TIO-541 GSO-580 IO-580 IO-720 O-1230

Radial engines and H engines	R-680 R-7755 H-2470

Turbofans	PLF1 ALF 502/YF102 LF 507

Turboprops/Turboshafts	AGT1500 LTS101/LTP101 T53 T55

Aero-derivative marine gas turbines	TF-40

Joint development	Avco (Lycoming)/Pratt & Whitney: T800-APW (Turboshaft)

See also	AlliedSignal Aerospace/Honeywell Aerospace

United States military piston aircraft engine designation system

H (four-bank H-configuration inline)	H-1640 XH-2240 H-2470 XH-2600 XH-3130 XH-3730 H-4070

I (inverted-V inline)	IV-1430 IV-2040 IV-2220

L (single-bank inline)	L-330 L-365 L-375 L-390 L-410 L-440 L-510 L-825

O (opposed)	O-15 O-40 O-45 O-90 O-100 O-145 O-150 O-170 O-175 O-180 O-190 O-200 (C) O-200 (F) O-205 O-235 O-290 O-300 O-335 O-360 (C) O-360 (L) O-405 O-425 O-435 O-470 O-480 O-520 O-540 (F) O-540 (L) O-550 O-580 O-805 O-1230

R (radial)	R-250 R-265 R-270 R-370 (LB) R-370 (K) R-420 R-440 R-500 R-540 (W) R-540 (K) R-545 R-550 R-600 R-670 R-680 R-720 R-755 R-760 R-790 R-830 R-915 R-975 DR-980 R-985 R-1044 R-1300 R-1340 R-1454 R-1510 R-1535 R-1640 R-1670 R-1690 R-1750 R-1820 R-1830 R-1860 R-2000 R-2060 R-2160 R-2180 R-2600 R-2800 R-3350 R-4090 R-4360 XR-7755

V (upright-V inline)	V-720 V-770 V-1150 V-1237 V-1400 V-1410 V-1440 V-1460 V-1510 V-1560 V-1570 V-1650 (L) V-1650 (P) V-1710 V-1950 V-3420

W (three-bank W-configuration inline)	W-2779

See also: X-1800 US military gas turbine aeroengines Piston engine configurations

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