Commonwealth legislation

AD/BEECH 1900/34 - KLN-90B GPS

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Commonwealth

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legislative instrument

Plain English Summary

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This Airworthiness Directive requires operators of Beech 1900D aeroplanes (serials UE-156 to UE-299) fitted with a KLN-90B GPS under FAA STC SA00245WI-D to rewire that GPS following Raytheon Mandatory Service Bulletin SB 34-3222. The CASA delegate issued the AD; compliance must occur within the next 400 hours time-in-service. Operators pay for the maintenance work; the change aims to remove the risk of inconsistent NAV “FLAG” displays that could present invalid navigation information to the co‑pilot.

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Current sections

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AIRWORTHINESS DIRECTIVE

View image in the official source

View image in the official source
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.

Beechcraft 1900 Series Aeroplanes

AD/BEECH 1900/34 KLN-90B GPS 4/2001

Applicability: Beech Model 1900D aeroplanes, serial numbers UE-156 through UE-299, that are equipped with a KLN-90B Global Positioning System (GPS) installed in accordance with Federal Aviation Administration (FAA) Supplemental Type Certificate (STC) SA00245WI-D.

Requirement: Rewire the KLN-90B GPS in accordance with the Accomplishment Instructions section of Raytheon Mandatory Service Bulletin SB 34-3222, issued January 2000.

Note: FAA AD 2001-04-05 Amdt 39-12123 refers.

Compliance: Within the next 400 hours time-in-service after the effective date of this Directive.

This Airworthiness Directive becomes effective on 19 April 2001.

Background: The FAA received a report of inconsistent NAV "FLAG" displays on a KLN-90B GPS installed on a Beech 1900D aeroplane in accordance with STC SA00245WI-D. The copilot had the KLN-90B GPS selected as the NAV source and the pilot did not have a valid NAV source selected. This caused the flight director command bar to disappear from the copilot's electronic attitude director indicator (EADI), and the copilot received an inconsistent NAV "FLAG”.

This Directive requires rewiring the KLN-90B GPS to eliminate the possibility of inconsistent NAV "FLAG" displays, as an inconsistent NAV "FLAG" display could cause the copilot to make decisions based on an invalid GPS source without knowing it was invalid.

View image in the official source

Eugene Paul Holzapfel

Delegate of the Civil Aviation Safety Authority 8 March 2001

View image in the official source

The above AD is notified in the Commonwealth of Australia Gazette on 21 March 2001.

Source text

Sourced from the Federal Register of Legislation (legislation.gov.au), CC BY 4.0.

AIRWORTHINESS DIRECTIVE AIRWORTHINESS DIRECTIVE

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.

Beechcraft 1900 Series Aeroplanes