Document ID: chunk:federal_register_of_legislation:F2013L01751:body:0:p2
Version: federal_register_of_legislation:F2013L01751
Segment Type: other
Provision Reference: 
Character Range: 2945–5102

following any change of either flightcrew member.

                  The briefing must include the following items.

                     - Whenever the intermittent warning horn sounds in flight:

                        1. Immediately, don oxygen masks and set regulators to 100%.

                        2. Establish crew communications.

                        3. Do the CABIN ALTITUDE WARNING OR RAPID DEPRESSURIZATION checklist.

                     - Both pilots must verify on the overhead Cabin Altitude Panel that the cabin altitude is stabilized at or below 10,000 feet before removing oxygen masks."

             The above actions may be accomplished by inserting a copy of this Directive into the applicable AFM.

             The Requirement 1 and 2 AFM revisions may be removed from the applicable AFM when the information they contain is inserted in the AFM by a normal or temporary revision.

                Note:  FAA AD 2008-23-07 Amdt 39-15728 refers.
Compliance:  For Requirements 1 and 2 - Within 120 days after the effective date of this Directive.

             Revising the AFM as per the approved FAA AMOC Letter 130S-09-134a dated
             28 April 2009 is an alternate means of complying with requirement 2 of this AD.
             The effective date of this Amendment is 30 September 2013.
Background:  The United States Federal Aviation Administration (FAA) had advised of the receipt of continuing reports that flightcrew have failed to recognize and react properly to the cabin altitude warning horn. This Directive is issued to prevent failure of the flightcrew to recognize and react to a valid cabin altitude warning horn, which could result in incapacitation of the flightcrew due to hypoxia (lack of oxygen in body) and consequent loss of aeroplane control.

   Amendment 1 allows the revising of the AFM as per the approved FAA AMOC Letter 130S-09-134a dated 28 April 2009 as an alternate means of complying with requirement 2 of this AD.

   The original issue of this AD became effective on 25 November 2008.

Peter Nikolic
Delegate of the Civil Aviation Safety Authority

10 September 2013