Service Instruction No. 1573 A

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LYCOMING TEO-540 ENGINE SERIES ENGINE CONTROL UNIT (ECU) ASSEMBLY CROSS-REFERENCES
DATE:

May 23, 2019

SUBJECT:

Lycoming TEO-540 Engine Series Engine Control Unit (ECU) Assembly Cross-References

MODELS AFFECTED:

Refer to Table 1

TIME OF COMPLIANCE:

As Required for Inspection/Maintenance/Replacement

Service Instruction No. 1279 D

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Oil Sump Baffle Replacement

Supersedes Service Instruction No. 1279C

May 15, 2019

MODELS AFFECTED:
  • IO-540-AA1A5, -AA1B5, -AE1A5, -E1A5, -E1B5, -K1A5, -K1B5, -K1D5, -K1E5, -K1F5, -K1G5, -K1H5, -K1J5, -K1K5, -K1A5D, -K1G5D, -K1J5D, -L1C5, -M1A5, -M1C5, -M1B5D, -S1A5
  • TIO-540-A2B, -A2C, -AE2A, -AH1A, -F2BD, -J2B, -J2BD, -S1AD, -U2A
  • LTIO-540-F2BD, -J2B, -J2BD, -U2A
  • IO-580-B1A
TIME OF COMPLIANCE:

Whenever oil sump baffle replacement is necessary or at owner's discretion.

Service Instruction No. 1415 A

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NEW TURBOCHARGER MOUNTING HARDWARE
DATE

March 21, 2019

MODELS AFFECTED

TO-360-C and -F series engines

TIME OF COMPLIANCE

At owner’s discretion or when part replacement is necessary.

REASON FOR REVISION

Revision A is being released to update the P/N of the strut assembly and various hardware P/N’s along with reformatting of the service instruction.

Service Bulletin No. 637

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Service Bulletin No. 637
Reprint of Slick/Champion Aerospace Service Bulletin SB1-19

March 14, 2019

MODELS AFFECTED

All 4 and 6-cylinder Lycoming engines equipped with Slick 4300 or 6300 Series Impulse Coupled Magnetos.

TIME OF COMPLIANCE

Next maintenance event, or 400 hours total time in service of the magneto (whichever occurs first), then every 500 hours after the initial inspection.

Service Bulletin No. 622A

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Service Bulletin No. 622A

Reprint of Slick/Champion Aerospace Service Bulletin SB1-15

March 13, 2019

MODELS AFFECTED

All Lycoming engines in Table 1 equipped with Slick 4200, 4300, or 4700 Series (LASAR) magnetos.

TIME OF COMPLIANCE

Next maintenance event, not to exceed 50 hours.

Service Letter No. 114 BG

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Service Letter No. 114 BG
RECIPROCATING ENGINE AND ACCESSORY MAINTENANCE PUBLICATIONS 
DATE:

February 13, 2019

TO:

Owners and Operators of Lycoming Aircraft Engines

REASON FOR REVISION:

Added listings for engine models TEO-540-A1A and TEO-540-C1A. Revised the paragraph on page 2 regarding email notification. Corrected listings for revisions to PC-615 by adding SSP-1084-1

Service Instruction No. 1037 V

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Service Instruction No. 1037 V
SUBJECT

Approved Pistons, Rings, Cylinders, and Gasket Set Application for Use on
Lycoming Aircraft Engines

DATE

February 13, 2019

MODELS AFFECTED

All Lycoming opposed series aircraft engines in Table 2 

TIME OF COMPLIANCE

When installing new rings, pistons, valves and cylinders

Service Instruction No. 1009 BD

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Service Instruction No. 1009 BD

Time Between Overhaul (TBO) Schedules

DATE:

February 13, 2019

SUBJECT:

Time Between Overhaul (TBO) Schedules

MODELS AFFECTED:

Lycoming Engine Models Defined Herein

REASON FOR REVISION:

Added new engine models, TEO-540-A1A and TEO-540-C1A Series to Table 1

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