Commonwealth legislation

AD/HS 125/172 - Rosemount Pitot Probes

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

3/10 complexity

This AD requires operators of certain Hawker 800XP aircraft (s/n 258266 and 258277–258500) to replace Rosemount 853JF pitot probes with Rosemount 853JF1 units (including associated ammeter, shunts and wiring) at the next 24‑month inspection or within six months, and prohibits fitting the older probe or ammeter P/N 2132-01-0017 from the effective date. CASA states the measure prevents loss or fluctuation of indicated airspeed; the cost and downtime for parts and maintenance fall to aircraft owners/operators.

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Current sections

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AIRWORTHINESS DIRECTIVE

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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 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.

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British Aerospace BAe 125 Series Aeroplanes

AD/HS 125/172 Rosemount Pitot Probes 8/2

AD/HS 125/172 Rosemount Pitot Probes 8/2004

Applicability: Model Hawker 800XP aeroplanes having serial number 258266 and serial numbers 258277 through 258500 inclusive.

Requirement: 1. Replace the existing Rosemount Aerospace 853JF pitot probes with new Rosemount Aerospace 853JF1 pitot probes (includes installing a new ammeter, two new shunts, and improved electrical writing), in accordance with paragraph

3.A. of the Accomplishment Instructions of Raytheon Service Bulletin SB 34- 3412, dated March 2001.

Rosemount Aerospace 853JF pitot probe or an ammeter having P/N 2132-01- 0017, shall not be installed on any aeroplane as a replacement part.

Note: FAA AD 2004-09-26 Amdt 39-13616 refers.

Compliance: For Requirement 1 - At the next scheduled 24-month inspection, but no later than 6 months after the effective date of this Directive.

For Requirement 2 - As of the effective date of this Directive.

This Airworthiness Directive becomes effective on 5 August 2004.

Background: This Directive requires replacement of certain existing pitot probes with new probes.

This action is necessary to prevent loss or fluctuation of indicated airspeed, which could result in hazardously misleading information being provided to the flight crew.

View image in the official source

James Coyne

Delegate of the Civil Aviation Safety Authority 23 June 2004

View image in the official source

The above AD is notified in the Commonwealth of Australia Gazette on 14 July 2004.

Source text

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

AIRWORTHINESS DIRECTIVE AIRWORTHINESS DIRECTIVE

AIRWORTHINESS DIRECTIVE

British Aerospace BAe 125 Series Aeroplanes

AD/HS 125/172 Rosemount Pitot Probes 8/2 AD/HS 125/172 Rosemount Pitot Probes 8/2004

AD/HS 125/172 Rosemount Pitot Probes 8/2004

Applicability: Model Hawker 800XP aeroplanes having serial number 258266 and serial numbers 258277 through 258500 inclusive.

3.A. of the Accomplishment Instructions of Raytheon Service Bulletin SB 34- 3412, dated March 2001.

Rosemount Aerospace 853JF pitot probe or an ammeter having P/N 2132-01- 0017, shall not be installed on any aeroplane as a replacement part.

Note: FAA AD 2004-09-26 Amdt 39-13616 refers.

Compliance: For Requirement 1 - At the next scheduled 24-month inspection, but no later than 6 months after the effective date of this Directive.

For Requirement 2 - As of the effective date of this Directive.

This Airworthiness Directive becomes effective on 5 August 2004.

Background: This Directive requires replacement of certain existing pitot probes with new probes.

This action is necessary to prevent loss or fluctuation of indicated airspeed, which could result in hazardously misleading information being provided to the flight crew.

James Coyne

Delegate of the Civil Aviation Safety Authority 23 June 2004

The above AD is notified in the Commonwealth of Australia Gazette on 14 July 2004.