Airworthiness Directive · Amendment 39-18656 · Ice and rain protection
Dassault Aviation Airplanes
This AD applies to all Dassault Aviation Model Falcon 10 airplanes, certificated in any category.
We are superseding Airworthiness Directive (AD) 2008-19-08, for all Dassault Aviation Model Falcon 10 airplanes. AD 2008-19-08 required repetitive replacement of the flexible hoses installed in the wing (slat) anti-icing system with new hoses. This new AD requires reducing the life limit of these flexible hoses, which reduces the repetitive replacement intervals. This AD was prompted by additional reports of collapse of the flexible hoses installed in the slat anti- icing systems on airplanes equipped with new, improved hoses. We are issuing this AD to prevent collapse of the flexible hoses in the slat anti-icing system, which could lead to insufficient anti-icing capability and, if icing is encountered in this situation, could result in reduced controllability of the airplane.
This paragraph restates the requirements of paragraph (h) of AD 2008-19-08, with revised compliance language. As of October 27, 2008 (the effective date of AD 2008-19-08): Replace the flexible hoses installed in the slat anti-icing system with new hoses having part number (P/N) FAL1007, in accordance with the Accomplishment Instructions of Dassault Service Bulletin F10-313, Revision 1, dated May 10, 2006, within 700 flight hours since the last replacement or within 100 flight hours after October 27, 2008, whichever occurs later, and thereafter at intervals not to exceed 700 flight hours. Accomplishing the replacement required by paragraph (h) or (i) of this AD ends the repetitive replacements required by this paragraph.
Within 65 days after the effective date of this AD: Replace any flexible hose having part number (P/N) FAL1000, P/N FAL1001, or P/N FAL1005D with a new, improved flexible hose having P/N FAL1007, using a method approved by the Manager, International Branch, ANM-116, Transport Airplane Directorate, FAA; or the European Aviation Safety Agency (EASA); or Dassault Aviation's EASA Design Organization Approval (DOA).
At the later of the times specified in paragraphs (i)(1) and (i)(2) of this AD, replace any flexible hose having part number P/N FAL1007 with a serviceable flexible hose having P/N FAL1007, using a method approved by the Manager, International Branch, ANM-116, Transport Airplane Directorate, FAA; or the EASA; or Dassault Aviation's EASA DOA. Thereafter, before the accumulation of 350 flight hours on any flexible hose having P/N FAL1007, replace the flexible hose with a serviceable flexible hose having P/N FAL1007.
(1) Before the accumulation of 350 flight hours on the flexible hose P/N FAL1007 since first installation on an airplane.
(2) At the earlier of the times specified in paragraphs (i)(2)(i) and (i)(2)(ii) of this AD.
(i) Within 200 flight hours after the effective date of this AD.
(ii) Before the accumulation of 700 flight hours on the flexible hose P/N FAL1007 since first installation on an airplane, or within 65 days after the effective date of this AD, whichever occurs later.
For the purpose of this AD, a serviceable flexible hose is a flexible hose having P/N FAL1007 that has accumulated less than 350 flight hours since first installation on an airplane.
After accomplishing the replacement required by paragraph (h) of this AD, no person may install a flexible hose in the slat anti-icing system on any airplane, unless that hose is a serviceable flexible hose having P/N FAL1007, and thereafter repetitive hose replacements are done as required by paragraph (i) of this AD.
