AD/CESSNA 170/72 - Cigar Lighter Wiring (Cth)

AIRWORTHINESS DIRECTIVE For the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.1 (1) of CAR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.

Cessna 170, 172, F172, FR172 and 175 Series Aeroplanes

AD/CESSNA 170/72 Cigar Lighter Wiring 3/2003

Applicability: Model 170, 172, R172, P172 and 175 series aeroplanes with serial numbers listed in the following table:

Models

170 172

R172 P172 175

Serial Numbers

18000 through 20999 and 25000 through 27169 28000 through 29999, 46001 through 47746, 17247747 through 17250572, and 17259224 through 17267584 R1722000 through R1722724 P17257120 through P17257189 55001 through 56777 and 17556778 through 17557119

Requirement: If not previously accomplished; disconnect the wire, at the ammeter or at the electrical system bus as applicable, that connects the bus to the cigar lighter receptacle. (The wire is connected to either the bus side or equipment side of a circuit breaker or to the ammeter). Following the disconnection of this wire either:

1. Reconnect the wire to the electrical bus by using an existing or newly installed circuit protection device that is properly rated to protect the wire gauge used for this circuit, or