Document ID: chunk:federal_register_of_legislation:F2013L01697:body:0:p1
Version: federal_register_of_legislation:F2013L01697
Segment Type: other
Provision Reference: 
Character Range: 0–3341

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 repeals Airworthiness Directive (AD) AD/B737/294 Amdt 1 and issues the following AD under subregulation 39.001(1) of CASR 1998 and subsection 33(3) of the Acts Interpretation Act 1901. 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.

Boeing 737 Series Aeroplanes
AD/B737/294 Amdt 2  Flightcrew Oxygen Masks  19/2013

Applicability:  Boeing Model 737-100, -200, -200C, -300, -400, -500, -600, -700, -700C, -800 and
                -900 series aeroplanes.
Requirement:       1. Revise the Cabin Pressurization procedures in the Normal Procedures section of the AFMs for Model 737-100, -200, -200C, -300, -400, -500, -600, -700, -700C,
                   -800, and -900 series aeroplanes to include the following procedure:

                   "For normal operations, the pressurization mode selector should be in AUTO prior to takeoff."

                   2. Revise the Emergency Procedures section of the AFMs for Model 737-100, -200, -200C, -300, -400, and -500 series aeroplanes, or the Non-Normal Procedures section of the AFMs for Model 737-600, -700, -700C, -800, and -900 series aeroplanes, as applicable, to include the following procedure:

                   "WARNING HORN - CABIN ALTITUDE OR CONFIGURATION

                   RECALL

                   Condition: An intermittent or steady warning horn sounds:

                    In flight an intermittent horn indicates the cabin altitude is at or above 10,000 feet

                    On the ground an intermittent horn indicates an improper takeoff configuration when advancing thrust levers to takeoff thrust

                   In flight a steady horn indicates an improper landing configuration.

                   If an intermittent horn sounds in flight:

                   OXYGEN MASKS AND REGULATORS..............on, 100%

                   CREW COMMUNICATIONS.................................Establish

      Do the CABIN ALTITUDE WARNING OR RAPID DEPRESSURIZATION checklist.

        If an intermittent horn sounds on the ground:

        Assure proper aeroplane takeoff configuration.

        If a steady horn sounds in flight:

        Assure proper airplane landing configuration."

   Method To Revising the AFM

   The AFM revisions specified in requirements 1 and 2 of this AD may be done by inserting a copy of this AD into the AFM.

   When statements identical to those specified in requirements 1 and 2 of this AD have been included in general revisions of the AFM, then the general revision(s) may be inserted into the AFM, and the copy of the AD may be removed from the applicable revised sections of the AFM.

   Optional Action for Certain Requirements of AD/B737/208, AD/B737/216 and AD/B737/255.

   If any of the following optional actions