FAA-APPROVED STARTERS AND ALTERNATORS

DATE:

April 16, 2020 

SUBJECT:

FAA-Approved Starters and Alternators

MODELS AFFECTED:

Lycoming engines as herein specified

TIME OF COMPLIANCE:

As required for replacement

REASON FOR REVISION:

Added NOTICE on page 1 regarding installation of components. Added Hartzell Engine Technologies (HET) part numbers to Table 2. Revised Table 1 to include IO-390-D Series. Starters approved for dual voltage are now only approved for 12V.

SERVICE TABLE OF LIMITS AND TORQUE VALUE RECOMMENDATIONS

DATE RELEASED:

April 13, 2020

TITLE:

Service Table of Limits and Torque Value Recommendations

DOCUMENT PART NUMBER:

SSP-1776-5

APPROVED SPARK PLUGS

DATE:

April 9, 2020

SUBJECT:

Approved Spark Plugs

MODELS AFFECTED:

All Lycoming piston aircraft engines

TIME OF COMPLIANCE:

As required for replacement

REASON FOR REVISION:

Added new engine model IO-390-D to Tables 4 and 5.

COUNTERWEIGHTS AND ROLLERS ON ENGINE MODELS

DATE:

April 9, 2020

SUBJECT:

Counterweights and Rollers on Engine Models

MODELS AFFECTED:

All Lycoming engines with counterweights

TIME OF COMPLIANCE:

As required

REASON FOR REVISION:

Added new engine models, IO-390-D Series to Table 5.

SUBJECT

Propeller Flange Bushing Locations

DATE

April 9, 2020

MODELS AFFECTED

All Certified Lycoming direct drive engines

TIME OF COMPLIANCE

At owner's discretion 

REASON FOR REVISION

Added IO-390-D1A6, -D1B6, -D3A6, -D3B6 engine models to Table 1

ENGINE INSPECTION AFTER OVERSPEED

DATE:

April 9, 2020

SUBJECT:

Engine Inspection after Overspeed

MODELS AFFECTED:

All Lycoming piston engines.

TIME OF COMPLIANCE:

As required by the subject bulletin.

REASON FOR REVISION:

Added new engine model IO-390-D to Table 1. Added new steps in Table 4 to include EIS Overspeed. Added a new NOTICE before the Magneto Overspeed Inspection section. Added a new section for EIS Overspeed Inspection.

SPECIFIED FUELS FOR SPARK-IGNITED GASOLINE AIRCRAFT ENGINE MODELS

DATE:

April 8, 2020 

SUBJECT:

Specified Fuels for Spark-Ignited Gasoline Aircraft Engine Models

MODELS AFFECTED:

Lycoming engine models as detailed in Table 3

TIME OF COMPLIANCE:

When refueling aircraft

REASON FOR REVISION:

Added listings for IO-390-D to Table 3

NEW CONNECTING ROD BUSHING

DATE:

March 12, 2020

SUBJECT:

New Connecting Rod Bushing

MODELS AFFECTED:

All Lycoming Engine Models

TIME OF COMPLIANCE:

As Required

DATE RELEASED:

March 2020

TITLE:

IO-390-D Engine Installation and Operation Manual 

DOCUMENT PART NUMBER:

Part No. IOM-IO-390-D Series

DATE RELEASED:

June 2024

TITLE:

IO-390-D Series Maintenance Manual (Principal Manual) (Rev 1)

DOCUMENT PART NUMBER:

Part No. MM-IO-390-D Series

MM-IO-390-D Series

• IO-390-D Series Maintenance Manual – Revision 1
  • Update changes requested since original release.  Changes made in following chapters:
  • Airworthiness Limitations Sections
  • 05-00
  • 12-30
  • 72-30
  • 74-30