Document ID: chunk:federal_register_of_legislation:F2013L01679:body:0:p1
Version: federal_register_of_legislation:F2013L01679
Segment Type: other
Provision Reference: 
Character Range: 0–3628

AIRWORTHINESS DIRECTIVE
On the effective date specified below, and for the reasons set out in the background section, the CASA delegate whose signature appears below revokes Airworthiness Directive (AD) AD/HS 125/161 and issues the following AD under subregulation 39.001(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.

British Aerospace BAe 125 Series Aeroplanes
AD/HS 125/161 Amdt 1  Oxygen System  19/2013

Applicability:  Models and series of aeroplanes as listed in the applicable Raytheon Aircraft Service Bulletin(s) (SB) specified in the following table:
                Model of Aeroplane                                                                                     SB No            SB Date
                DH.125, HS.125, BH.125 series 1A, 1B, 3A, 3B, 400A, 400B, 401B, 403A,403B, 600A, 600B, 700A, and 700B  SB 35-3169       September 1998
                BAe.125 series 800A (C-29A)                                                                            SB 35-3171       September 1998
                BAe.125 series 800A, 800B, and Hawker 800                                                              SB 35-3034 and   September 1998
                                                                                                                       SB 35-3170
                BAe.125 series 1000A, 1000B, and Hawker 1000                                                           SB 35-3167 and   September 1998
                                                                                                                       SB 35-3168

Requirement:       1. For Model DH.125, HS.125, BH.125 series 1A, 1B, 3A, 3B, 400A, 400B, 401B, 403A, 403B, 600A, 600B, 700A and 700B 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 35-3169 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.

                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:

                   1. Replace the cadmium plated cone