Document ID: chunk:federal_register_of_legislation:F2007L01574:body:0:p2
Version: federal_register_of_legislation:F2007L01574
Segment Type: other
Provision Reference: 
Character Range: 3075–5093

the corresponding actions in requirement 1 of this AD.

             Accomplishing the actions required by requirement 2.b. of this AD before the effective date of this AD, in accordance with Boeing Service Bulletin 767-26-0118, original issue, or Revision 1, dated 3 October 2002; is considered acceptable for compliance with the corresponding actions in requirement 2.b. of this AD for accomplishing the modification of the fire extinguishing tube assembly.

             Note:  FAA AD 2007-10-03 Amdt 39-15044 dated 30 April 2007 refers.

Compliance:       1. a. Within 24 months or 8,000 flight hours after the effective date of this AD, whichever is first.

                  Thereafter repeat the inspections at intervals not to exceed 24 months or 8,000 flight hours, whichever occurs first.

                  b. Before further flight, after the effective date of this AD.

                  2. a. Within 24 months or 8,000 flight hours after the effective date of this AD, whichever occurs first.  Do all applicable modifications before further flight following the inspections.

                  b. Before further flight, after the effective date of this AD.

             This Airworthiness Directive becomes effective on 5 July 2007.

Background:  This AD was prompted by one report indicating that an operator found a hole in the discharge tube assembly for the metered fire extinguishing system; and another report indicating that an operator found chafing of the fire extinguishing tube against the auxiliary power unit (APU) duct that resulted in a crack in the tube.  The issuing of this AD is intended to prevent fire extinguishing agent from leaking out of the tube assembly in the aft cargo compartment which, in the event of a fire in the aft cargo compartment, could result in an insufficient concentration of fire extinguishing agent, and consequent inability of the fire extinguishing system to suppress the fire.

David Villiers
Delegate of the Civil Aviation Safety Authority

24 May 2007