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AD/SA 315/13 - Horizontal Stabiliser Spar
Eurocopter SA 315 (Lama) Series HelicoptEurocopter SA 315 (Lama) Series Helicopters
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Eurocopter SA 315 (Lama) Series Helicopters
| AD/SA 315/13 | Horizontal Stabiliser Spar | 13/2006 |
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| Applicability: | Model SA 315 B helicopters. |
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| Requirement: | 1. STABILISERS PART NUMBER 315A-35-10-000-1a. Accomplishment of a visual inspection in accordance with paragraph 2.B(1) of Eurocopter SA 315 Service Bulletin (SB) No. 55.01 Revision 2, was required within 3 months after 14 December 1996.If corrosion is detected inside the tube, other than in the half-shell area, replacement of the tube was required within 500 flight hours or by31 December 1998, whichever occurred first.b. Compliance with paragraph 2.B(2) of SB No. 55.01 Revision 2, which corresponds to the embodiment of modifications 07.2215 (adding half shells on the spar tube) and 07.2214 (installation of the spar tube without play), was required by 1 March 1984, as mandated by DGAC AD 83-204-026(B), which has since been cancelled.c. Once compliance with Requirement 1.b. is confirmed, accomplish the following:(i) Visually check the installation of the half-shells and the horizontal stabiliser.(ii) Visually check the condition of the installation and lubricate the spar tube attachment bolts.d. For the horizontal stabilisers part number 315A35-10-000-1 on which modification 07.2215 has been embodied, the airworthiness aspects covered by DGAC AD 85-194-030(B) (effective 27 November 1985) which is superseded and replaced by DGAC AD 96-277-037(A) (this AD) remain applicable. These aspects are as follows:Confirm that there are no traces of marking on the spar tube and rework the stabiliser support fittings in accordance with paragraph C.1. of Eurocopter Service Bulletin (SB) No. 01.23. |
| e. For horizontal stabilisers part number 315A35-10-000-1 on which modification 07.2215 has been embodied and which do not have the letter ”X” engraved on the identification plate in the official stamp area, the airworthiness aspects covered by DGAC AD 88-025-031(B) (effective13 February 1988) which is superseded and replaced by DGAC AD96-277-037(A) (this AD) remain applicable. These aspects are as follows:With a view to removing any traces of corrosion and improving the protective treatment at the half-shell-to-stabiliser tube centre section assembly points, the following measures were to have been applied at the 400 flight hour interval or by 13 February 1989, whichever occurred first.Carry out the checks and any required reworking, return the assembly to airworthy condition and mark the letter “X” on the stabiliser in accordance with paragraph C.1. of Eurocopter Service Bulletin (SB) No. 01.25.2. STABILISERS PART NUMBER 315A35-10-000-2 and HIGHER DASH NUMBERSa. Accomplishment of a visual inspection in accordance with paragraph 2.B(1) of SB No. 55.01 Revision 2, was required within 3 months after14 December 1996.If corrosion is detected inside the tube, other than in the half-shell area, replacement of the tube was required within 500 flight hours or by31 December 1998, whichever occurred first.b. A check, and if necessary, modification of the supports and the stabiliser was required by 14 June 1997 in accordance with paragraph 2.B.(2) of SB No. 55.01 Revision 2 (embodiment of modification 07.2215), provided that the instructions in paragraph 2.B.(3) of SB No. 55.01 Revision 2 were applied once within 8 days or 10 flight hours, whichever occurred first, from the effective date of DGAC AD 96-277-037(A) R1 dated 21 May 1997 (A check of the condition of the tube inside the area which is covered by the two half-shells. If a crack is found, discard the tube).c. Once compliance with Requirement 2.b. is confirmed, accomplish the following:(i) Visually check the installation of the half-shells and the horizontal stabiliser.(ii) Visually check the condition of the installation and lubricate the spar tube attachment bolts. |
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