Commonwealth legislation

AD/INST/45 - Honeywell Air Data Inertial Reference Units

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This Airworthiness Directive requires operators of certain Honeywell Air Data Inertial Reference Units (ADIRUs) with serial numbers below 0841 and specified part numbers to inspect the unit identification plate per Honeywell service bulletins and, for some part numbers, replace units not marked as modification 2 or 3. It affects aircraft listed by manufacturer and model that use these ADIRUs. Operators must follow the Honeywell ASBs and bear the inspection and replacement work; CASA enforces compliance to address an identified unsafe condition.

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AIRWORTHINESS DIRECTIVE

View image in the official source

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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.

AD/INST/45 Honeywell Air Data Inertial R

AD/INST/45 Honeywell Air Data Inertial Reference Units 6/2000 DM

Applicability: Honeywell air data inertial reference units (ADIRU) having a serial number below 0841 and a part number (P/N) listed below:

Aeroplane Manufacturer	Model	ADIRU P/N
Boeing	757-300	HG2050AC02
	737-600	HG2050AC03
	737-700	HG2050AC04
	737-800	HG2050AC05
Airbus	A319-111, A319-112, A319-113, A319-114, A319-131, A319-132, A320-111, A320-211, A320-212, A320-214, A320-231, A320-232, A320-233, A321-111, A321-112, A321-131, A330-202, A330-301, A330-223, A330-321, A330-322, A330-323, A340-211, A340-311, A340-212, A340-312, A340-213, A340-313	HG2030AD09
Airbus	A330-202, A330-301, A330-223, A330-321, A330-322, A330-323, A340-211, A340-311, A340-212, A340-312, A340-213, A340-313	HG2030AD10

Requirement: 1. Inspect the identification plate of the ADIRU to determine its modification status, in accordance with Honeywell Alert Service Bulletin (ASB) HG2030AD-34- A0009 (for an ADIRU having P/N HG2030AD09 or HG2030AD10) or ASB HG2050AC-34-A0008 (for an ADIRU having P/N HG2050AC02, HG2050AC03,

HG2050AC04, or HG2050AC05), both dated 9 March 2000; as applicable.

2. If any ADIRU having P/N HG2050AC02, HG2050AC03, HG2050AC04, or HG2050AC05 is not marked as modification 2 or 3 replace the ADIRU with an ADIRU specified in either Requirement 2.a. or 2.b. below, in accordance with Honeywell ASB HG2050AC-34-A0008, dated 9 March 2000.

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.

AD/INST/45 Honeywell Air Data Inertial R AD/INST/45 Honeywell Air Data Inertial Reference Units 6/2000 DM

AD/INST/45 Honeywell Air Data Inertial Reference Units 6/2000 DM

Applicability: Honeywell air data inertial reference units (ADIRU) having a serial number below 0841 and a part number (P/N) listed below:

Aeroplane Manufacturer	Model	ADIRU P/N
Boeing	757-300	HG2050AC02
	737-600	HG2050AC03
	737-700	HG2050AC04
	737-800	HG2050AC05
Airbus	A319-111, A319-112, A319-113, A319-114, A319-131, A319-132, A320-111, A320-211, A320-212, A320-214, A320-231, A320-232, A320-233, A321-111, A321-112, A321-131, A330-202, A330-301, A330-223, A330-321, A330-322, A330-323, A340-211, A340-311, A340-212, A340-312, A340-213, A340-313	HG2030AD09
Airbus	A330-202, A330-301, A330-223, A330-321, A330-322, A330-323, A340-211, A340-311, A340-212, A340-312, A340-213, A340-313	HG2030AD10

HG2050AC04, or HG2050AC05), both dated 9 March 2000; as applicable.

2. If any ADIRU having P/N HG2050AC02, HG2050AC03, HG2050AC04, or HG2050AC05 is not marked as modification 2 or 3 replace the ADIRU with an ADIRU specified in either Requirement 2.a. or 2.b. below, in accordance with Honeywell ASB HG2050AC-34-A0008, dated 9 March 2000.