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Printed from https://aircraftdirectives.com/engines/lycoming-o435-a/breakdown · AircraftDirectives restates official FAA and manufacturer records; the official sources named on this sheet control. Not an airworthiness determination.

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Lycoming

O-435-A

Historical six-cylinder Lycoming with a projecting splined nose, upper shroud tubes, deep ribbed sump and low induction.

Rendered exterior of the Lycoming O-435-A engine

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Model accuracy & scope

Reviewed exterior models with fitted geometry. Installed part numbers and component-level manual matching remain unverified unless explicitly identified.

  • Reviewed first exterior; dimensions, routes and materials include fitted approximations. Not exact installed OEM geometry.
  • Parts groups are a browsing aid, not an OEM exploded assembly or an installed parts catalogue.
  • Internal mechanisms, functional flow and maintenance fit are not established.
  • Removable baffles and primer plumbing are omitted.
  • A starter flange gap, deep carburetor overlap and sump topology defects remain.
  • Historical O-435-A only; no military or geared variant equivalence.

Use the applicable manufacturer manual and parts catalogue for maintenance and exact installation details.

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Manufacturer references

These references inform the model as a whole. A component is linked to a specific page or figure only when that match has been verified.

  1. Lycoming O-435-A Overhaul Manual 60295-1

    Document host: www.manualslib.com

    Historical first edition, Lycoming-Spencer / Avco

    Reference pages: PDF 7–11, 21–22, 33, 41

    Actual historical whole/component illustrations; not O-435-1, VO-435 or GO-435 applicability.