Document ID: chunk:federal_register_of_legislation:F2005L03146:body:0:p2
Version: federal_register_of_legislation:F2005L03146
Segment Type: other
Provision Reference: 
Character Range: 2843–6000

replace the TTVFV in accordance with SB A330-28-3088 Rev 1 (replace Argo-Tech PN 61600 with a new PN) or later DGAC approved revisions.

                For the LH trim tank outboard float valve Intertechnique PN L87-13-001, replace the TTVFV in accordance with SB A330-28-3089 Rev 2 (replace Intertechnique PN L87-13-001 with a new PN) or SB A330-28-3094 or later DGAC approved revisions.

                Argo-Tech and Intertechnique vent float valves PN 61600 and PN L87-13-001 removed from aircraft must be discarded.

                Incorporation of SB A330-28-3088 Rev 1 and either SB A330-28-3089 Rev 2 or SB A330-28-3094 (or later DGAC approved revisions) cancels the requirements of this Directive.

                Argo Tech vent float valve new PN 62015-1 installed on the A340 is not interchangeable with new PN 62015-1 installed on the A330 and vice versa.

                Intertechnique TTVFV new PN L87-13-002 or PN L87-13-003 installed on the A340 is not interchangeable with new PN L87-13-002 or PN L87-13-003 installed on the A330 and vice versa.

             Note:  DGAC AD F-2005-004 EASA approval No. 2005-3642 dated 20 April 2005 refers.
Compliance:  For Requirement 1:

                For aircraft where the TTVFV has not been replaced since entry into service of the aeroplane; inspect within 7,500 flight hours from the date that the TTVFV has accumulated 15,000 flight hours or 2,500 flight cycles, whichever occurs first.

                For aircraft where the TTVFV has been or is replaced after entry into service; inspect within 15,000 flight hours or 2,500 flight cycles, whichever occurs first, from the date of installation of the TTVFV.

             For Requirement 2:

                As detailed in the reference documents.

             For Requirement 3:

                Not later than 10,000 flight hours or 1,500 flight cycles after the last inspection as detailed in Requirement 1 of this Directive.

             For Requirement 4:

                Within 15,000 flight hours or 2,500 flight cycles, whichever occurs first, from the date of installation of the TTVFV.

             For Requirement 5:

                Unless previously accomplished not later than 31 March 2009.
             This Amendment becomes effective on 24 November 2005.
Background:  This Directive is in response to damage found on the trimmable horizontal stabilizer trim tank vent float valves.  Detachment of certain parts of the vent float valves may lead to sparks or an increase in static load and/or structural damage.  In combination with other factors this failure may lead to a catastrophic event occurring.

             This amendment clarifies that the inspection requirements detailed in Requirement 4 of this Directive only apply to Argo-Tech PN 61600 and Intertechnique PN
             L87-13-001 TTVFV's.

             Amendment 3 introduced a new PN trim tank vent float valve as an additional PN valve to the valve previously listed as a replacement valve in the left hand position.

             Amendment 2 of this Directive mandated the modification of the vent float valves and extended the