Commonwealth legislation

AD/LJ45/3 - Ice and Rain Protection

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

4/10 complexity

This Airworthiness Directive requires operators of specified Learjet 45 serial numbers (those listed in Bombardier Service Bulletin A45-30-2 that have not incorporated Section 2) to revise the Aircraft Flight Manual to prohibit flight into icing, to inspect the anti-ice manifold assembly, and to replace that assembly if required, following Bombardier SB A45-30-02. It affects owners, operators and maintenance organisations, who must update manuals, carry out inspections and install parts per the manufacturer’s instructions and bear the direct compliance costs.

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AIRWORTHINESS DIRECTIVE

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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.

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Learjet 45 Series Aeroplanes

AD/LJ45/3 Ice and Rain Protection 6/2002

Applicability: Learjet 45 series aeroplanes as listed by serial number in Bombardier (Learjet) Service Bulletin (SB) A45-30-2, and not incorporating the requirements of Section 2 Accomplishment Instructions of Bombardier (Learjet) SB A45-30-2.

Requirement: 1. Flight Manual: Revise the limitations section of the FAA approved Aircraft flight manual (AFM) by replacing the existing information in the “TYPE OF OPERATION” section with the following:

“This airplane is approved for:

VFR (Visual)
IFR (Instrument)
Day
Night

Flight into icing conditions is prohibited. If icing conditions are encountered, comply with the Inadvertent Icing Encounter procedure, Section IV. Fly out of icing conditions as soon as possible.

Icing conditions exist when outside air temperature (OAT) on the ground and for takeoff is 10°C (50°F) or below, or the static air temperature (SAT) in flight is 10°C (50°F) to -40°C (-40°F), and visible moisture in any form is present (such as clouds, fog with visibility of one mile (1.6 km) or less, rain, snow, sleet, or ice crystals).

Icing conditions also exist when the OAT on the ground and for takeoff is 10°C (50°F) or below when operating on ramps, taxiways, or runways where surface snow, ice, standing water, or slush may be ingested by the engines, or freeze on engines, nacelles, or engine sensor probes."

2. Inspection: Inspect the anti-ice manifold assembly in accordance with Bombardier (Learjet) SB A45-30-02.

3. Replacement: Replace the anti-ice manifold assembly in accordance with Bombardier (Learjet) SB A45-30-02.

Source text

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

AIRWORTHINESS DIRECTIVE AIRWORTHINESS DIRECTIVE

AIRWORTHINESS DIRECTIVE

Learjet 45 Series Aeroplanes