Document ID: chunk:federal_register_of_legislation:F2005L02832:body:0:p2
Version: federal_register_of_legislation:F2005L02832
Segment Type: other
Provision Reference: 
Character Range: 2779–6026

a review of aeroplane maintenance records is acceptable if the P/N of the flappers and flapper assemblies can be conclusively determined from that review.

                     (a) If four flappers having P/N 2323006-802 and four flapper assemblies having P/N 2323006-801 are found installed, no further action is required by this Requirement, and the repetitive inspections required by Requirements 1 and 4 of this Directive can be stopped.

                     (b) If any flapper having P/N 2323006-5 or any flapper assembly having P/N 2323006-6 is found installed, replace the flapper valve with a new flapper valve or replace the flapper assembly with new or modified and reidentified assembly, as applicable.  The replacement must be done in accordance with the Accomplishment Instructions of Bombardier Service Bulletin SB 23/24/25-28-7 Revision 2 dated 9 May 2001.  Accomplishment of the replacement ends the repetitive inspections required Requirements 1 and 4 of this Directive.

                   6. Do not install a flapper having P/N 2323006-5 or a flapper assembly having P/N 2323006-6, on any aeroplane.

                Note:  FAA AD 2005-16-09 Amdt 39-14214 refers.
Compliance:        1. Remains unchanged as detailed in the original issue of this Directive as:  Within 50 hours time-in-service after 29 February 1996, or prior to the accumulation of 600 hours time-in-service since installation of the flapper valve, whichever occurs later, thereafter repeat at intervals not to exceed 600 hours time-in-service.

                     (a) Before further flight.

                     (b) Before further flight.

                   2. Remains unchanged as detailed in the original issue of this Directive as:  Except as provided in Requirement 3 of this Directive, at the later of the times specified below in (2)(a) and (2)(b) of this Directive:

                     (a) Within 5 years since date of installation of the flapper valve, or prior to the accumulation of 2,400 total hours time-in-service on the flapper valve, whichever occurs earlier.

                     (b) Within 50 hours time-in-service after 29 February 1996.

                   3. Remains unchanged as detailed in the original issue of this Directive as within 50 hours time-in-service after 29 February 1996.

                   4. Within 600 hours time-in-service following replacement of any flapper valve in accordance with the requirements of this Directive, and thereafter at intervals not to exceed 600 hours time-in-service.

                   5. Within 600 hours time-in-service since last replacement of any flapper valve in accordance with the requirements of this Directive, or within 90 days after the effective date of this Directive, whichever occurs later.

                     (b) Within 600 hours time-in- service since last replacement of any flapper valve in accordance with the requirements of this Directive.

                   6. From the effective date of this Directive.
                This Amendment becomes effective on 27 October 2005.
Background:     The original issue of this Directive required repetitive inspections to detect deterioration of both flappers of the tip tank in each wing of the aeroplane,