1AD/LYC/97 - Connecting Rod Bolt Inspection

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Lycoming Piston Engines

AD/LYC/97 Connecting Rod Bolt Inspection 6/95 DM

Applicability: The following Textron Lycoming reciprocating engine models, assembled on or after 15 February 1994, and that contain connecting rod bolts shipped directly or indirectly from Superior Air Parts, Inc., on or after 15 February 1994:

O-360-A1A, -A1AD, -A1C, -A1D, -A1F6, -A1F6D, -A1G6, -A1G6D, -A1LD, -A2A,

-A2D, -A2E, -A2F, -A2G, -A3A, -A3AD, -A4A, -A4G, -A4J, -A4K, -A4M, -A4N,

-A5AD, -B2A, -C1A, -C1C, -C1E, -C1F, -C1G, -C2A, -C2C, -C2D, -C2E, -D2A,

-D2B, and -F1A6;

IO-360-A1A, -A1B, -A1B6, -A1B6D, -A1C, -A1D, -A1D6, -A2A, -A2B, -A3B6D,

-B1A, -B1B, -B1D, -B1E, -B1F, -B2F, -B2F6, -B4A, -C1A, -C1B, -C1C6, -C1D6,

-C1E6, -C1F, and -J1A6D;

AIO-360-A1A, -A1B, and -B1B; LO-360-A1G6D;

HO-360-B1A, and -B1B;

HIO-360-A1A, -B1A, -C1A, -C1B, -E1AD, and -E1BD; LIO-360-C1E6;

TIO-360-A1B;

AEIO-360-A1E, -B1G6, and -H1A;

O-540-A1A, -A1A5, -A1B5, A1C5, -A1D, -A1D5, -A2B, -A3D5, -B1A5, -B1B5,

-B2B5, -B2C5, -B4B5, -E4A5, -E4B5, -E4C5, -F1A5, -F1B5, -G1A5, -G2A5,

-H1B5D, -H2B5D, J1A5D, -J3A5D, -J3C5D, and -L3C5D;

IO-540-A1A5, -B1A5, -B1C5, -C1B5, -C4B5, -C4C5, -C4D5D, -D4A5, -E1A5,

-E1B5, -G1A5, -G1B5, -G1C5, -G1D5, -G1E5, -G1F5, -J4A5, -K1A5, -K1A5D,

-K1B5, -K1C5, -K1D5, -K1E5, -K1K5, -M1A5, -N1A5, -P1A5, -R1A5, -T4C5D,

-K1F5, -K1F5D, -K1G5, -K1G5D, -K1J5D, -K1K5, -M1QA5, -M1B5D, -N1A5,

-P1A5, -R1A5, -S1A5, -T4A5D, -T4B5D, -T4CTD, -V4A5D, -W1A5D, -W3A5D, and -AA1A5;

TIO-540-A1A, -A1B, -A2A, -A2B, -A2C, -C1A, -E1A, -G1A, -H1A, -J2B, -F2BD,

-J2BD, -N2BD, -R2AD, -S1AD, -AA1AD, and -AB1AD; LTIO-540-J2B, -F2BD, -J2BD, -N2BD, and -R2AD; IVO-540-A1A;

AEIO-540-D4B5;

TIO-541-A1A, E1A4, -E1B4, and -E1C4;

COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 106 CIVIL AVIATION SAFETY AUTHORITY

SCHEDULE OF AIRWORTHINESS DIRECTIVES

IO-720-A1A, -A1B, -B1B, -B1BD, -C1B, and -D1B.

Requirement: 1. Review engine records to determine if:-

(a) The engine was last assembled prior to 15 February 1994, or

(b) The engine is a first-run engine, or a remanufactured engine from Textron Lycoming, or

(c) It can be positively established that, for engines assembled on or after 15 February 1994, the engine contains only connecting rod bolts:

(i) that were purchased from Superior Air Parts prior to 15 February 1994 or after 20 December 1994, or

(ii) that were purchased directly from Textron Lycoming, or Aircraft Technologies, Inc., or

(iii) that have not been replaced since 14 February 1994.