Document ID: chunk:federal_register_of_legislation:F2007L00381:body:0:p3
Version: federal_register_of_legislation:F2007L00381
Segment Type: other
Provision Reference: 
Character Range: 5730–7169

whichever occurs later.
                  b. For aeroplanes on which, as of the effective date of this Directive, the heater tape has been replaced in accordance with ASB 767-30A0037, or SB
                  767-30A0037, Revision 1 - Within 42 months after replacing the heater tape, or within 24 months after the effective date of this Directive, whichever occurs later.
             This Airworthiness Directive becomes effective on 15 March 2007.
Background:  This Directive requires repetitive inspections of the forward and aft cargo compartments, as applicable, for discrepancies of the potable water supply and grey water drain lines; and applicable corrective actions if necessary.  The Directive also requires replacing the heater tapes on the potable water supply and grey water drain lines of the forward and aft cargo compartments, as applicable, with new ribbon heaters, or deactivating and removing any defective heater tape and wrapping the drain line with foam insulation; either action ends the repetitive inspections.
             The Directive results from a report of a fire in the aft cargo compartment and is issued to prevent overheating of the heater tape on potable water fill and drain lines, which may ignite accumulated debris or contaminants on or near the potable water fill and drain lines, resulting in a fire in the aeroplane.

James Coyne
Delegate of the Civil Aviation Safety Authority

1 February 2007