CESSNA 172S Skyhawk — Wiring Diagram

This document is an ICA (Instructions for Continued Airworthiness) Supplement for the Cessna Model 172, specifically addressing the relocation of the low oil pressure switch. It provides maintenance technicians with updated replacement intervals for the oil pressure switch based on its installation location. The supplement is applicable to Cessna 172 models from the 1996 series and onward, including the 172R and 172S. It outlines the necessary procedures for ensuring the correct functionality and performance of the oil pressure switch relocation until the information is incorporated into the next revision of the maintenance manuals. The document includes details on the effectivity of the changes, inspection programs, and airworthiness limitations.

• Replacement interval for oil pressure switch on RH crankcase: 1,000 hours.
• Replacement interval for oil pressure switch on LH accessory housing: 3,000 hours.
• Effective for Cessna Model 172 from 1996 series onward.
• Follow specified procedures for removal and installation of the low oil pressure switch.
• Ensure compliance with airworthiness limitations and inspection programs.