CESSNA 210 — Maintenance Manual

This document is a legal interpretation from the FAA regarding the applicability of Airworthiness Limitations Sections (ALS) added to the maintenance manuals of Cessna Model 210 aircraft. It addresses whether these newly added ALS requirements are mandatory for operators and maintainers of older Cessna 210 models that were type-certificated before the new ALS was approved. The document clarifies that unless an Airworthiness Directive (AD) is issued, the new ALS is not retroactively mandatory for older aircraft. It emphasizes the importance of understanding the type design of the aircraft in relation to compliance with maintenance requirements. The interpretation is significant for owners, operators, and maintenance providers of Cessna 210 aircraft, as it outlines the legal framework governing the enforcement of maintenance procedures and the implications of changes in type design.

• The new ALS added to the Cessna Model 210 Service Manual is not retroactively mandatory for older aircraft.
• Operators and maintainers must comply with the ALS that was part of the aircraft's type design at the time of production.
• An Airworthiness Directive (AD) is required for new ALS requirements to be mandatory for older models.
• Cessna produced the last Model 210 in 1986, and the type design for these aircraft is fixed unless changed by the FAA.
• Compliance with maintenance procedures is based on the specific type design of the aircraft.