Airworthiness Directive · Amendment 39-15659 · BAE Systems (Operations) Limited (Jetstream) Model 4101 Airplanes
BAE Systems (Operations) Limited (Jetstream) Model 4101 Airplanes
This AD applies to all BAE Systems (Operations) Limited Model Jetstream 4101 airplanes, certificated in any category.
The FAA is superseding an existing airworthiness directive (AD), which applies to all BAE Systems (Operations) Limited (Jetstream) Model 4101 airplanes. That AD currently requires repetitive tests for free movement of the capsule/bearing of the nose landing gear (NLG), and related investigative and corrective actions. This new AD requires a modified test for free movement of the capsule/bearing of the NLG at reduced repeat intervals, and replacement of the NLG assembly with a modified assembly. This AD results from additional reports of the NLG failing to extend fully on an airplane that had been inspected in accordance with AD 2004-14-07. We are issuing this AD to prevent failure of the NLG to extend fully, which could result in reduced controllability of the airplane during landing.
You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done.
BAE Systems (Operations) Limited Alert Service Bulletin J41-A32-082, Revision 1, dated February 20, 2004, refers to APPH Service Bulletin AIR83586-32-22, Revision 1, dated February 2004, as an additional source of service information for accomplishing the actions in BAE Systems (Operations) Limited Alert Service Bulletin J41-A32-082, Revision 1, dated February 20, 2004. BAE Systems (Operations) Limited Alert Service Bulletin J41-A32-082, Revision 3, dated March 30, 2007, refers to APPH Service Bulletin AIR83586-32-22, Revision 3, dated December 2006, as an additional source of service information for accomplishing the actions in BAE Systems (Operations) Limited Alert Service Bulletin J41-A32-082, Revision 3, dated March 30, 2007.
(g) BAE Systems (Operations) Limited Service Bulletin J41-A32-084, dated November 30, 2005, refers to APPH Service Bulletin AIR83586-32-25, dated October 2005, as an additional source of service information for accomplishing the actions in BAE Systems (Operations) Limited Service Bulletin J41-A32-084, dated November 30, 2005.
Actions accomplished before the effective date of this AD per the Accomplishment Instructions of BAE Systems (Operations) Limited Alert Service Bulletin J41-A32-082, dated February 11, 2004; BAE Systems (Operations) Limited Alert Service Bulletin J41-A32-082, Revision 1, dated February 20, 2004; or BAE Systems (Operations) Limited Alert Service Bulletin J41-A32-082, Revision 2, dated November 25, 2005; are considered acceptable for the corresponding actions required by this AD. (BAE Systems (Operations) Limited Alert Service Bulletin J41-A32-082, Revision 2, dated November 25, 2005, refers to APPH Service Bulletin AIR83586-32-22, Revision 2, dated October 2005, as an additional source of service information for accomplishing the actions in BAE Systems (Operations) Limited Alert Service Bulletin J41-A32-082, Revision 2, dated November 25, 2005.)
(i) Where BAE Systems (Operations) Limited Alert Service Bulletin J41-A32-082, Revision 1, dated February 20, 2004; BAE Systems (Operations) Limited Alert Service Bulletin J41-A32-082, Revision 3, dated March 30, 2007; and APPH Service Bulletin AIR83586-32-22, Revision 1, dated February 2004; specify to contact BAE Systems or APPH for repair instructions: Before further flight, repair per a method approved by the Manager, International Branch, ANM-116, FAA, Transport Airplane Directorate; the Civil Aviation Authority (CAA) (or its delegated agent); or the European Aviation Safety Agency (EASA) (or its delegated agent).
Where the flow chart in BAE Systems (Operations) Limited Alert Service Bulletin J41-A32-082, Revision 1, dated February 20, 2004; or BAE Systems (Operations) Limited Alert Service Bulletin J41-A32-082, Revision 3, dated March 30, 2007; specifies “flying hours,” for the purposes of this AD, this term means “flight hours.”
Where BAE Systems (Operations) Limited Alert Service Bulletin J41-A32-082, Revision 1, dated February 20, 2004; or BAE Systems (Operations) Limited Alert Service Bulletin J41-A32-082, Revision 3, dated March 30, 2007; specifies to complete a reporting form and return it to the manufacturer, this AD does not require that action.
Within 300 flight cycles or 30 days after August 13, 2004 (the effective date of AD 2004-14-07), whichever occurs first: Perform a test for free movement of the NLG capsule/bearing, as specified in the flow chart following paragraph 1.M. of BAE Systems (Operations) Limited Alert Service Bulletin J41-A32-082, Revision 1, dated February 20, 2004; or the flow chart following paragraph 1.N. of BAE Systems (Operations) Limited Alert Service Bulletin J41-A32-082, Revision 3, dated March 30, 2007. After the effective date of this AD, only BAE Systems (Operations) Limited Alert Service Bulletin J41-A32-082, Revision 3, dated March 30, 2007, may be used to perform the test for free movement. Do all of the actions per the Accomplishment Instructions of BAE Systems (Operations) Limited Alert Service Bulletin J41-A32-082, Revision 1, dated February 20, 2004; or BAE Systems (Operations) Limited Alert Service Bulletin J41-A32-082, Revision 3, dated March 30, 2007. After the effective date of this AD, only BAE Systems (Operations) Limited Alert Service Bulletin J41-A32-082, Revision 3, dated March 30, 2007, may be used.
Note 1: As specified in the flow chart following paragraph 1.M. of BAE Systems (Operations) Limited Alert Service Bulletin J41-A32-082, Revision 1, dated February 20, 2004, only the actions in paragraph 2.A. (Part 1) of the Accomplishment Instructions of APPH Service Bulletin AIR83586-32-22, Revision 1, dated February 2004, are required by paragraph (l) of this AD.
Perform related investigative, significant, and corrective actions as specified in and at the compliance times specified in the flow chart following paragraph 1.M. of BAE Systems (Operations) Limited Alert Service Bulletin J41-A32-082, Revision 1, dated February 20, 2004; or following paragraph 1.N. of BAE Systems (Operations) Limited Alert Service Bulletin J41-A32-082, Revision 3, dated March 30, 2007. Do all of the actions per the Accomplishment Instructions of BAE Systems (Operations) Limited Alert Service Bulletin J41-A32-082, Revision 1, dated February 20, 2004; or BAE Systems (Operations) Limited Alert Service Bulletin J41-A32-082, Revision 3, dated March 30, 2007; except as provided by paragraph (k) of this AD. During any test, if the movement of the capsule/bearing is restricted, the applicable corrective actions must be accomplished before further flight. After the effective date of this AD, only BAE Systems (Operations) Limited Alert Service Bulletin J41-A32-082, Revision 3, dated March 30, 2007, may be used.
As of August 13, 2004, no person may install an NLG on any airplane unless it has been inspected in accordance with the requirements of paragraphs (l) and (m) of this AD.
Within 400 flight hours after the effective date of this AD, or within 800 flight hours after the last test done in accordance with paragraph (l) of this AD, whichever is later, but not exceeding 3,000 flight hours after the last test done in accordance with paragraph (l) of this AD; and before further flight after each scheduled or unscheduled NLG replacement: Clean, lubricate, and inspect for free movement of the NLG capsule/bearing in accordance with the Accomplishment Instructions and the flow chart provided in paragraph 1.N. of BAE Systems (Operations) Limited Alert Service Bulletin J41-A32-082, Revision 3, dated March 30, 2007.
(1) For NLG capsules that have adequate free movement: At the applicable interval specified in paragraphs (o)(1)(i) and (o)(1)(ii) of this AD, repeat the cleaning, lubrication, and inspection for free movement of the NLG capsule/bearing, in accordance with the Accomplishment Instructions and the flow chart provided in paragraph 1.N. of BAE Systems (Operations) Limited Alert Service Bulletin J41-A32-082, Revision 3, dated March 30, 2007.
(i) For airplanes on which the modification specified in BAE Systems (Operations) Limited Service Bulletin J41-A32-084, dated November 30, 2005 (Modification JM41670), has not been accomplished, repeat the actions specified in paragraph (o)(1) of this AD at intervals not to exceed 800 flight hours after the last inspection done in accordance with paragraph (o) of this AD.
(ii) For airplanes on which the modification specified in BAE Systems (Operations) Limited Service Bulletin J41-A32-084, dated November 30, 2005 (Modification JM41670), has been accomplished, repeat the actions specified in paragraph (o)(1) of this AD at intervals not to exceed 3,000 flight hours after the last inspection done in accordance with paragraph (o) of this AD.
(2) For NLG capsules that do not have adequate free movement: Before further flight, replace the NLG assembly with a serviceable assembly in accordance with the Accomplishment Instructions and the flow chart provided in paragraph 1.N. of BAE Systems (Operations) Limited Alert Service Bulletin J41-A32-082, Revision 3, dated March 30, 2007. Thereafter, repeat the actions specified in paragraph (o) of this AD at the applicable interval specified in paragraph (o)(1) of this AD.
Within 48 months after the effective date of this AD: Replace the NLG assembly with a modified assembly, in accordance with BAE Systems (Operations) Limited Service Bulletin J41-32-084, dated November 30, 2005. Thereafter, repeat the actions specified in paragraph (o) of this AD at the applicable interval specified in paragraph (o)(1) of this AD.
As of the effective date of this AD, no person may install a NLG on any airplane unless it has been inspected in accordance with paragraph (o) of this AD.
