Division British Aerospace BAe 125 Series Aeropla - AD/HS 125/161 Amdt 1 - Oxygen System - British Aerospace BAe 125 Series Aeroplanes

British Aerospace BAe 125 Series Aeroplanes

AD/HS 125/161 Amdt 1	Oxygen System	19/2013

<table cellspacing="0" cellpadding="0" style="width:510.3pt; margin-top:0pt; margin-bottom:0pt; border-collapse:collapse"><tbody><tr><td style="width:74.35pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span>Applicability:</span></p></td><td style="width:414.55pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span>Models and series of aeroplanes as listed in the applicable Raytheon Aircraft Service Bulletin(s) (SB) specified in the following table:</span></p></td></tr><tr><td style="width:74.35pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span></span></p></td><td style="width:414.55pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><table cellspacing="0" cellpadding="0" style="margin-top:0pt; margin-bottom:0pt; border-collapse:collapse"><tbody><tr><td style="width:180.6pt; padding-right:5.4pt; padding-left:5.4pt; vertical-align:top"><p><span style="font-weight:bold">Model of Aeroplane</span></p></td><td style="width:102.6pt; padding-right:5.4pt; padding-left:5.4pt; vertical-align:top"><p><span style="font-weight:bold">SB No</span></p></td><td style="width:98.2pt; padding-right:5.4pt; padding-left:5.4pt; vertical-align:top"><p><span style="font-weight:bold">SB Date</span></p></td></tr><tr><td style="width:180.6pt; padding-right:5.4pt; padding-left:5.4pt; vertical-align:top"><p><span>DH.125, HS.125, BH.125 series 1A,</span><span> </span><span>1B, 3A, 3B, 400A, 400B, 401B, 403A,403B, 600A, 600B, 700A, and 700B</span></p></td><td style="width:102.6pt; padding-right:5.4pt; padding-left:5.4pt; vertical-align:top"><p><span>SB 35-3169</span></p></td><td style="width:98.2pt; padding-right:5.4pt; padding-left:5.4pt; vertical-align:top"><p><span>September 1998</span></p></td></tr><tr><td style="width:180.6pt; padding-right:5.4pt; padding-left:5.4pt; vertical-align:top"><p><span>BAe.125 series 800A (C-29A)</span></p></td><td style="width:102.6pt; padding-right:5.4pt; padding-left:5.4pt; vertical-align:top"><p><span>SB 35-3171</span></p></td><td style="width:98.2pt; padding-right:5.4pt; padding-left:5.4pt; vertical-align:top"><p><span>September 1998</span></p></td></tr><tr><td style="width:180.6pt; padding-right:5.4pt; padding-left:5.4pt; vertical-align:top"><p><span>BAe.125 series 800A, 800B, and</span><span> </span><span>Hawker 800</span></p></td><td style="width:102.6pt; padding-right:5.4pt; padding-left:5.4pt; vertical-align:top"><p><span>SB 35-3034 and</span><span></span><br><span>SB 35-3170</span></p></td><td style="width:98.2pt; padding-right:5.4pt; padding-left:5.4pt; vertical-align:top"><p><span>September 1998</span></p></td></tr><tr><td style="width:180.6pt; padding-right:5.4pt; padding-left:5.4pt; vertical-align:top"><p><span>BAe.125 series 1000A, 1000B, and</span><span> </span><span>Hawker 1000</span></p></td><td style="width:102.6pt; padding-right:5.4pt; padding-left:5.4pt; vertical-align:top"><p><span>SB 35-3167 and</span><br><span>SB 35-3168</span></p></td><td style="width:98.2pt; padding-right:5.4pt; padding-left:5.4pt; vertical-align:top"><p><span>September 1998</span></p></td></tr></tbody></table><p></p></td></tr><tr><td style="width:74.35pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span>Requirement:</span></p></td><td style="width:414.55pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p style="margin-left:21.3pt; margin-bottom:12pt; text-indent:-21.3pt"><span>1.</span><span style="width:12.3pt; text-indent:0pt; display:inline-block"> </span><span>For Model DH.125, HS.125, BH.125 series 1A, 1B, 3A, 3B, 400A, 400B, 401B,</span><span> </span><span>403A, 403B, 600A, 600B, 700A and 700B aeroplanes:</span></p><p style="margin-top:12pt; margin-left:42.55pt; margin-bottom:12pt; text-indent:-21.25pt"><span>a.</span><span style="width:12.92pt; text-indent:0pt; display:inline-block"> </span><span>Replace the cadmium plated cone caps in the oxygen system plumbing with</span><span> </span><span>improved cone caps, and perform a detailed visual inspection of the removed</span><span> </span><span>cone caps, tee-piece and sleeve for evidence of flaking or corrosion; in accordance with SB 35-3169 dated September 1998.</span></p><p style="margin-top:12pt; margin-left:42.55pt; margin-bottom:12pt; text-indent:-21.25pt"><span>b.</span><span style="width:12.25pt; text-indent:0pt; display:inline-block"> </span><span>If any flaking or corrosion is detected, clean the tee-piece and sleeve, and</span><span> </span><span>perform an oxygen system flow check in accordance with the SB.</span></p><p style="margin-top:12pt; margin-left:42.55pt; text-indent:-21.25pt"><span>c.</span><span style="width:12.92pt; text-indent:0pt; display:inline-block"> </span><span>If any discrepancy is found during the flow check, repair the oxygen system in</span><span> </span><span>accordance with the SB, except as required by Requirement 5.</span><span></span></p></td></tr></tbody></table>

	2. For Model BAe.125 series 800A (C-29A) aeroplanes:a. Replace the cadmium plated cone caps in the oxygen system plumbing with improved cone caps, and perform a detailed visual inspection of the removed cone caps, tee-piece and sleeve for evidence of flaking or corrosion; in accordance with SB 35-3171, dated September 1998.b. If any flaking or corrosion is detected, clean the tee-piece and sleeve, and perform an oxygen system flow check in accordance with the SB.c. If any discrepancy is found during the flow check, repair the oxygen system in accordance with the SB, except as required by Requirement 5.3. For Model BAe.125 series 800A and 800B aeroplanes and Model Hawker 800 aeroplanes:Replace the cadmium plated cone caps in the oxygen system plumbing with improved cone caps, and perform a detailed visual inspection of the removed cone caps, tee-piece and sleeve for evidence of flaking or corrosion; in accordance with SB 35-3034 or SB 35-3170, both dated September 1998, as applicable.b. If any flaking or corrosion is detected, clean the tee-piece and sleeve, and perform an oxygen system flow check in accordance with the SB.c. If any discrepancy is found during the flow check, repair the oxygen system in accordance with the SB, except as required by Requirement 5.4. For Model BAe.125 series 1000A and 1000B aeroplanes and Model Hawker series aeroplanes:a. Replace the cadmium plated fittings in the oxygen system plumbing with improved fittings, and perform a detailed visual inspection of the removed fittings and the pipe connections for evidence of flaking or corrosion; in accordance with SB 35-3167 or SB 35-3168, both dated September 1998, as applicable.b. If any flaking or corrosion is detected, clean the pipe connections, and perform an oxygen system flow check in accordance with the SB.c. If any discrepancy is found during the flow check, repair the oxygen system in accordance with the SB, except as required by Requirement 5.5. If any discrepancy is found during a flow check required by Requirements 1, 2, 3 or 4 and the applicable SB specifies to contact the manufacturer for a repair disposition, repair the oxygen system in accordance with a method approved by the Manager, Technical Specialists Section, Certification Standards Branch, Civil Aviation Safety Authority, GPO Box 2005 Canberra ACT 2601, Facsimile(02) 6217 1914.
	Note 1: For the purposes of this Directive, a detailed visual inspection is defined as: "An intensive visual examination of a specific structural area, system, installation, or assembly to detect damage, failure, or irregularity. Available lighting is normally supplemented with a direct source of good lighting at intensity deemed appropriate by the inspector. Inspection aids such as mirror, magnifying lenses, etc., may be used. Surface cleaning and elaborate access procedures may be required."Note 2: FAA AD 2000-02-35 Amdt 39-11553 refers.
Compliance:	For Requirement 1.a. - Within 6 months after the effective date of this Directive.For Requirement 1.b. - Before further flight.For Requirement 1.c. - Before further flight.For Requirement 2.a. - Within 6 months after the effective date of this Directive.For Requirement 2.b. - Before further flight.For Requirement 2.c. - Before further flight.For Requirement 3.a. - Within 6 months after the effective date of this Directive.For Requirement 3.b. - Before further flight.For Requirement 3.c. - Before further flight.For Requirement 4.a. - Within 6 months after the effective date of this Directive.For Requirement 4.b. - Before further flight.For Requirement 4.c. - Before further flight.For Requirement 5 - Before further flight.

2. For Model BAe.125 series 800A (C-29A) aeroplanes:a. Replace the cadmium plated cone caps in the oxygen system plumbing with improved cone caps, and perform a detailed visual inspection of the removed cone caps, tee-piece and sleeve for evidence of flaking or corrosion; in accordance with SB 35-3171, dated September 1998.b. If any flaking or corrosion is detected, clean the tee-piece and sleeve, and perform an oxygen system flow check in accordance with the SB.c. If any discrepancy is found during the flow check, repair the oxygen system in accordance with the SB, except as required by Requirement 5.3. For Model BAe.125 series 800A and 800B aeroplanes and Model Hawker 800 aeroplanes:Replace the cadmium plated cone caps in the oxygen system plumbing with improved cone caps, and perform a detailed visual inspection of the removed cone caps, tee-piece and sleeve for evidence of flaking or corrosion; in accordance with SB 35-3034 or SB 35-3170, both dated September 1998, as applicable.b. If any flaking or corrosion is detected, clean the tee-piece and sleeve, and perform an oxygen system flow check in accordance with the SB.c. If any discrepancy is found during the flow check, repair the oxygen system in accordance with the SB, except as required by Requirement 5.4. For Model BAe.125 series 1000A and 1000B aeroplanes and Model Hawker series aeroplanes:a. Replace the cadmium plated fittings in the oxygen system plumbing with improved fittings, and perform a detailed visual inspection of the removed fittings and the pipe connections for evidence of flaking or corrosion; in accordance with SB 35-3167 or SB 35-3168, both dated September 1998, as applicable.b. If any flaking or corrosion is detected, clean the pipe connections, and perform an oxygen system flow check in accordance with the SB.c. If any discrepancy is found during the flow check, repair the oxygen system in accordance with the SB, except as required by Requirement 5.5. If any discrepancy is found during a flow check required by Requirements 1, 2, 3 or 4 and the applicable SB specifies to contact the manufacturer for a repair disposition, repair the oxygen system in accordance with a method approved by the Manager, Technical Specialists Section, Certification Standards Branch, Civil Aviation Safety Authority, GPO Box 2005 Canberra ACT 2601, Facsimile(02) 6217 1914.

Note 1: For the purposes of this Directive, a detailed visual inspection is defined as: "An intensive visual examination of a specific structural area, system, installation, or assembly to detect damage, failure, or irregularity. Available lighting is normally supplemented with a direct source of good lighting at intensity deemed appropriate by the inspector. Inspection aids such as mirror, magnifying lenses, etc., may be used. Surface cleaning and elaborate access procedures may be required."Note 2: FAA AD 2000-02-35 Amdt 39-11553 refers.

Compliance:

For Requirement 1.a. - Within 6 months after the effective date of this Directive.For Requirement 1.b. - Before further flight.For Requirement 1.c. - Before further flight.For Requirement 2.a. - Within 6 months after the effective date of this Directive.For Requirement 2.b. - Before further flight.For Requirement 2.c. - Before further flight.For Requirement 3.a. - Within 6 months after the effective date of this Directive.For Requirement 3.b. - Before further flight.For Requirement 3.c. - Before further flight.For Requirement 4.a. - Within 6 months after the effective date of this Directive.For Requirement 4.b. - Before further flight.For Requirement 4.c. - Before further flight.For Requirement 5 - Before further flight.

	There is no change to initial requirements of the AD.The original issue of this Airworthiness Directive became effective on23 March 2000.

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Mike Higgins
Delegate of the Civil Aviation Safety Authority

5 September 2013

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