Service Bulletin No. 658

Starter Inspection, Hartzell Engine Tech (HET) Service Bulletin (SB) No.211
DATE:

January 8, 2025

MODELS AFFECTED:

IO-360-A1A, -A1B, -A1B6, -A1B6D, -A1D6, -A2B, -A3B6, -A3B6D, -M1A,
-M1B, -N1A, -P1A -LIO-360-M1A
AEIO-360-A1A, -A1B, -A1B6, -A1D, -A1E, -A1E6, -A2C
IO-390-A1A6, -A1B6, -A3A6, -A3B6
AEIO-390-A1A6, -A1B6, -A3A6, -A3B6
IO-540-V4A5, -V4A5D, -W1A5, -W1A5D, -W3A5D.

ENGINE MOUNTED OIL FILTER KITS AND RELACEMENT FILTERS SSP-885-2

Clean engine oil is essential to long engine life. Full-flow filter elements and full-flow spin-on assemblies are an added improvement over older methods of filtration and can be installed on any applicable engine not equipped with a filter.
Installing an oil filter on an engine not equipped with a filter can increase the oil change interval from 25 to 50 hours.

FAA Airworthiness Directive AD 2024-21-02

Response to Inquiry: FAA Airworthiness Directive AD 2024-21-02

On October 31, 2024, at Lycoming Engines’ request, the FAA issued Airworthiness Directive (AD) 2024-21-02, which requires enhanced visual inspection during regularly scheduled oil changes to detect indications of deterioration of certain connecting rod bushings. The AD also directs follow-on maintenance activities to replace potentially non-conforming connecting rod bushings.

Service Bulletin No. 660

REPRINT OF SLICK/CHAMPION AEROSPACE SERVICE BULLETIN SB1-24A
DATE:

September 20, 2024

MODELS AFFECTED:

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

TIME OF COMPLIANCE:

As required in the Slick/Champion Aerospace Service Bulletin SB1-24A