Division Radio Communication and Navigation Equip - AD/RAD/90 - FreeFlight Systems 2101 I/O Approach Plus GPS Navigation System - Radio Communication and Navigation Equipment

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AD/RAD/90	FreeFlight Systems 2101 I/O ApproachPlus GPS Navigation System	5/2009

Applicability:	Trimble or FreeFlight Systems 2101 I/O Approach Plus global positioning system (GPS) navigation system (2101 I/O Approach Plus system), part number81440-xx-241E, 81440-xx-241F or 81440-xx-241G (xx indicates either the numbers 02, 03, or 12), with software revision -241E, -241F or -241G, installed.
Requirement:	Unless accomplished previously, upgrade the system software to revision -241J.
	Note 1: Sections II and III of FreeFlight Systems Service Bulletin SB81440-XX-00-19, dated 12 December 2006, pertains to the requirements of this Directive.
	Note 2: FAA AD 2009-05-08 Amdt 39-15832 refers.
Compliance:	For aircraft approved for instrument flight rule (IFR) flight - Within 180 days after the effective date of this Directive.
	For aircraft approved for visual flight rule (VFR) flight - Within 270 days after the effective date of this Directive.
	This Airworthiness Directive becomes effective on 7 May 2009.
Background:	The United States Federal Aviation Administration (FAA) has advised of an incident that led to the discovery of several annunciation errors with the 2101 I/O Approach Plus system. The actions specified by this Directive are intended to prevent a pilot from making an unsafe decision based on erroneous information provided by the 2101 I/O Approach Plus system, which could result in loss of control of the aircraft.

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James Coyne
Delegate of the Civil Aviation Safety Authority

26 March 2009