Computer Testing Supplement for IA.indb - Aviation Supplies ...

Model Lycoming O-540 -J1A5D, -J2A5D,
-J1B5D, -J2B5D,
-J3A5D
Page 3 of 8 E-295
-J1C5D, -J2C5D,
-J3C5D, -J1D5D,
-J2D5D
-L3C5D (See
NOTE 12)
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
17.75 17.94 18.10
Off propeller shaft C.L., in. 0.75 below
0.69 below
0.59 below
0.19 left
0.19 left
0.34 left
Propeller shaft-AS-127 Type 2 flange
modified
- - - -
Carburetion Marvel Schebler
- - - -
HA-6
Ignition dual See NOTE 8 25 - -
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
"- -" indicates "same as preceding model"
"�" indicates "does not apply"
Certification basis:
- -
1 through 8, 10, 11,
12, 13
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-A2P 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