AD/RAD/82 - Prevent GPS Navigation unit from Providing Erroneous Cross-Deviation (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 CASR 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.

Radio Communication and Navigation Equipment

AD/RAD/82 Prevent GPS Navigation unit from Providing Erroneous Cross-Deviation

9/2004

Applicability: Garmin AT, formerly UPS Aviation Technologies, Apollo GX50/55/60/65 TSO- C129a global positioning system (GPS) navigation units as listed below with software versions 3.0 through 3.4 inclusive:

Model Part Number Description Modification Level GX50 430-6050-400 Approach Certified GPS With any of the following mods: (H), (N), (P), (T) or (U); prior to (V) 430-6050-401 Approach Certified GPS Prior to (V) 430-5060-402 Approach Certified GPS Prior to (V) GX55 430-6050-200 Enroute/Terminal Certified GPS With any of the following mods: (E), (J), (K), (M) or (N); prior to (R): 430-6050-201 Enroute/Terminal Certified GPS With any of the following mods: (E), (J), (K), (M) or (N); prior to (R) 430-6050-202 Enroute/Terminal Certified GPS Prior to (R) 430-6050-203 Enroute/Terminal Certified GPS Prior to (R)