Airworthiness Directive · Amendment 39-22866 · Emergency equipment
Various Helicopters
This AD applies to the helicopters identified in paragraphs (c)(1) through (8) of this AD, certificated in any category.
(1) Airbus Helicopters Model AS350B, AS350BA, AS350B1, AS350B2, AS350B3, AS350C, AS350D, AS350D1, AS355E, AS355F, AS355F1, AS355F2, and AS355N helicopters modified by Supplemental Type Certificate (STC) SR00831LA; Model EC120B helicopters modified by STC SR00780LA; and Model EC130B4 helicopters modified by STC SR01687LA.
Note 1 to paragraph (c)(1): Helicopters with an AS350B3e designation are Model AS350B3 helicopters.
(2) Airbus Helicopters Deutschland GmbH (AHD) Model BO-105A, BO-105C, BO-105S, and BO-105LS A-3 helicopters modified by STC SR00856LA; Model EC135P1, EC135P2, EC135P2+, EC135P3, EC135T1, EC135T2, EC135T2+, and EC135T3 helicopters modified by STC SR01855LA; and Model MBB-BK 117 C-2 and MBB-BK 117 D-2 helicopters modified by STC SR02244LA.
Note 2 to paragraph (c)(2): Helicopters with an EC135P3H designation are Model EC135P3 helicopters; helicopters with an EC135T3H designation are Model EC135T3 helicopters, and helicopters with an MBB-BK117 C-2e designation are Model MBB-BK117 C-2 helicopters.
(3) Bell Textron Inc., Model 210, 212, 412, 412CF, and 412EP helicopters modified by STC SR01779LA; and Model 412, 412CF, and 412EP helicopters modified by STC SR01459LA.
(4) Bell Textron Canada Limited Model 206A, 206B, 206L, 206L-1, 206L-3, 206L-4, and 407 helicopters modified by STC SR01535LA.
Note 3 to paragraph (c)(4): Helicopters with a 206B3 designation are Model 206B helicopters; helicopters with a 206L-1+ designation are Model 206L-1 helicopters; and helicopters with a 206L-3+ designation are Model 206L-3 helicopters.
(5) Leonardo S.p.a. Model AB412 and AB412 EP helicopters modified by STC SR01779LA.
(6) MD Helicopters, LLC, Model 369D, 369E, 369F, 369FF, 369HE, 369HM, 369HS, and 500N helicopters modified by STC SR00932LA.
(7) Robinson Helicopter Company Model R44 and R44 II helicopters modified by STC SR02049LA; and Model R66 helicopters modified by STC SR02484LA.
(8) Sikorsky Aircraft Corporation Model S-76A, S-76B, and S-76C helicopters modified by STC SR01902LA.
The FAA is adopting a new airworthiness directive (AD) for various helicopters modified by certain supplemental type certificates (STCs) that approve the installation of an emergency float kit or an emergency float with a liferaft kit. This AD was prompted by the results of an accident investigation and subsequent reports of difficulty pulling the emergency float kit activation handle installed on the pilot cyclic. This AD requires repetitively inspecting the pull force on the float activation handle and for certain model helicopters, this AD also requires and replacing certain part-numbered float inflation reservoirs (reservoirs) and pull cable assemblies (cables) with other part-numbered reservoirs and cables. Finally, this AD prohibits installing certain part-numbered reservoirs and cables on specific helicopters. The FAA is issuing this AD to address the unsafe condition on these products.
(1) Within 100 hours time-in-service (TIS) or 30 days after the effective date of this AD, whichever occurs first, and thereafter at intervals not to exceed six months, accomplish the actions required by paragraphs (g)(1)(i) through (vi) of this AD, as applicable to your model helicopter.
(i) For Airbus Helicopters Model EC130B4 helicopters identified in paragraph (c)(1) of this AD, accomplish the actions required by paragraphs (g)(1)(i)(A) or (B) of this AD, as applicable, and paragraph (g)(1)(i)(C) of this AD, as applicable.
(A) Inspect the pull force on the float activation handle in accordance with section 2.0 (for pull cable test tool part-number (P/N) 606.7803), paragraphs 1 through 14 of DART Aerospace Operation Instructional Manual for General Pull Cable Rigging and Testing Procedure, Revision B, dated May 12, 2023 (DART OIM-11 Rev B), except if the inflation handle makes contact with the cyclic stick in paragraph 6, before further flight, perform cable rigging in accordance with FAA-approved procedures and, once the cable is properly rigged, continue with the actions required by this paragraph, and except the measurement in paragraph 8 must be 0.85 in (2.16 cm) or greater; or
(B) Inspect the pull force on the float activation handle in accordance with section 3.0 (for pull cable test tool P/N 607.1602), paragraphs 3 through 20 of DART OIM-11 Rev B, except in paragraph 3, where it states, “it is advised to mark these locations and verify the hole centers by removing the two set screws from the test tool and sliding the tool onto the shroud and aligning the tool with the marks,” replace that text with “mark these locations and verify the hole centers by removing the two set screws from the test tool and sliding the tool onto the shroud and aligning the tool with the marks,” and except the measurement in paragraph 13 must be 0.75 in (1.91 cm) or greater.
(C) If the pull force is greater than 25 lbf (111.2N) or exceeds the limits in the existing Installation Instructions or Instructions for Continued Airworthiness for your helicopter, as applicable, before further flight, comply with paragraph (g)(2) of this AD, as applicable to your model helicopter.
(ii) For Airbus Helicopters Deutschland GmbH (AHD) Model MBB-BK 117 C-2 and MBB-BK 117 D-2 helicopters identified in paragraph (c)(2) of this AD, accomplish the actions required by paragraphs (g)(1)(ii)(A) and (B) of this AD, as applicable.
(A) Inspect the pull force on the float activation handle in accordance with section 2.0 (for pull cable test tool P/N 606.7803), paragraphs 1 through 14 of DART OIM-11 Rev B, except if the inflation handle makes contact with the cyclic stick in paragraph 6, before further flight, perform cable rigging in accordance with FAA-approved procedures, and except the measurement in paragraph 8 must be 0.85 in (2.16 cm) or greater.
(B) If the pull force is greater than 25 lbf (111.2N), or exceeds the limits in the existing Installation Instructions or Instructions for Continued Airworthiness for your helicopter, as applicable, before further flight, comply with paragraph (g)(2) of this AD, as applicable to your model helicopter.
(iii) For Bell Textron Inc., Model 210, 212, 412, 412CF, and 412EP helicopters identified in paragraph (c)(3) of this AD, accomplish the actions required by paragraphs (g)(1)(iii)(A) or (B) of this AD, as applicable, and paragraph (g)(1)(iii)(C) of this AD, as applicable.
(A) Inspect the pull force on the float activation handle in accordance with section 2.0 (for pull cable test tool P/N 606.7803), paragraphs 1 through 14 of DART OIM-11 Rev B, except if the inflation handle makes contact with the cyclic stick in paragraph 6, before further flight perform cable rigging in accordance with FAA-approved procedures, and except the measurement in paragraph 8 must be 0.85 in (2.16 cm) or greater; or
(B) Inspect the pull force on the float activation handle in accordance with section 3.0 (for pull cable test tool P/N 607.1602), paragraphs 3 through 20 of DART OIM-11 Rev B, except in paragraph 3, where it states, “it is advised to mark these locations and verify the hole centers by removing the two set screws from the test tool and sliding the tool onto the shroud and aligning the tool with the marks.” replace that text with “mark these locations and verify the hole centers by removing the two set screws from the test tool and sliding the tool onto the shroud and aligning the tool with the marks,” and except the measurement in paragraph 13 must be 0.75 in (1.91 cm) or greater.
(C) If the pull force is greater than 25 lbf (111.2N), or exceeds the limits in the existing Installation Instructions or Instructions for Continued Airworthiness for your helicopter, as applicable, before further flight, comply with paragraph (g)(2) of this AD, as applicable to your model helicopter.
(iv) For Bell Textron Canada Limited Model 206A, 206B, 206L, 206L-1, 206L-3, 206L-4, and 407 helicopters identified in paragraph (c)(4) of this AD, accomplish the actions required by paragraphs (g)(1)(iv)(A) and (B) of this AD, as applicable.
(A) Inspect the pull force on the float activation handle in accordance with section 2.0 (for pull cable test tool P/N 606.7803), paragraphs 1 through 14 of DART OIM-11 Rev B, except if the inflation handle makes contact with the cyclic stick in paragraph 6, before further flight perform cable rigging in accordance with FAA-approved procedures, and except the measurement in paragraph 8 must be 0.85 in (2.16 cm) or greater.
(B) If the pull force is greater than 25 lbf (111.2N), or exceeds the limits in the existing Installation Instructions or Instructions for Continued Airworthiness for your helicopter, as applicable, before further flight, comply with paragraph (g)(2) of this AD, as applicable to your model helicopter.
(v) For Robinson Helicopter Company Model R66 helicopters identified in paragraph (c)(7) of this AD, accomplish the actions required by paragraphs (g)(1)(v)(A) and (B) of this AD, as applicable.
(A) Inspect the pull force on the float activation handle in accordance with section 2.0 (for pull cable test tool P/N 607.7803), paragraphs 1 through 14 of DART OIM-11 Rev B, except if the inflation handle makes contact with the cyclic stick in paragraph 6, before further flight perform cable rigging in accordance with FAA-approved procedures, and except the measurement in paragraph 8 must be 0.85 in (2.16 cm) or greater.
(B) If the pull force is greater than 25 lbf (111.2N), or exceeds the limits in the existing Installation Instructions or Instructions for Continued Airworthiness for your helicopter, as applicable, before further flight, comply with paragraph (g)(2) of this AD, as applicable to your model helicopter.
(vi) For the helicopters identified in paragraphs (g)(1)(vi)(A) through (E) of this AD, inspect the pull force on the float activation handle in accordance with FAA-approved procedures. The threshold for this pull force inspection must not exceed 25 lbf (111.2N). If the float activation handle fails the test, (if the pull force is greater than 25 lbf (111.2N)), or exceeds the limits in the existing Installation Instructions or Instructions for Continued Airworthiness for your helicopter, as applicable, before further flight, comply with paragraph (g)(2) of this AD, as applicable to your model helicopter.
(A) Airbus Helicopters Model AS350B, AS350BA, AS350B1, AS350B2, AS350B3, AS350C, AS350D, AS350D1, AS355E, AS355F, AS355F1, AS355F2, AS355N, and EC120B helicopters identified in paragraph (c)(1) of this AD.
(B) Airbus Helicopters Deutschland GmbH (AHD) Model BO-105A, BO-105C, BO-105S, BO-105LS A-3, EC135P1, EC135P2, EC135 P2+, EC135P3, EC135T1, EC135T2, EC135T2+, and EC135T3 helicopters identified in paragraph (c)(2) of this AD.
(C) Leonardo S.p.a. Model AB412 and AB412 EP helicopters identified in paragraph (c)(5) of this AD.
(D) MD Helicopters, LLC, Model 369D, 369E, 369F, 369FF, 369HE, 369HM, 369HS, and 500N helicopters identified in paragraph (c)(6) of this AD.
(E) Sikorsky Aircraft Corporation Model S-76A, S-76B, and S-76C helicopters identified in paragraph (c)(8) of this AD.
(2) For the helicopters identified in paragraphs (g)(1)(i) through (v) of this AD, as a result of the actions required by paragraphs (g)(1)(i) through (v) of this AD, if the pull force is greater than 25 lbf (111.2N), or exceeds the limits in the existing Installation Instructions or Instructions for Continued Airworthiness for your helicopter, as applicable, before further flight, comply with either paragraph (g)(2)(i) or (ii) of this AD.
(i) Repair the cable installation in accordance with FAA-approved procedures.
(ii) Deactivate and placard the emergency float system as inoperative in accordance with Appendix A of DART Aerospace Service Bulletin (SB) No. SB2020-09, Revision A, dated March 16, 2021, DART Aerospace SB No. SB2021-01, Revision A, dated December 28, 2021, DART Aerospace SB No. SB2021-02, dated April 30, 2021, DART Aerospace SB No. SB2021-03, dated June 30, 2021, or DART Aerospace SB No. SB2022-01, dated March 14, 2022, as applicable to your model helicopter, except where Appendix A specifies ty-wrapping the pin into place on the pilot collective, and where Appendix A specifies contacting DART customer service for a resolution, accomplish the deactivation and placarding in accordance with FAA-approved procedures. If the emergency float system is deactivated and placarded as inoperative, you are not required to accomplish the actions required by paragraph (g)(1) of this AD. This AD does not allow operation with an inoperative emergency float system unless the requirements of 14 CFR 91.205, 91.213, 135.183, and 136.11 have been met.
(3) For the helicopters identified in paragraphs (g)(1)(vi)(A) through (E) of this AD, as a result of the actions required by the introductory text of paragraph (g)(1)(vi) of this AD, if the pull force is greater than 25 lbf (111.2N), before further flight, repair the cable installation, or deactivate and placard the emergency float system as inoperative in accordance with FAA-approved procedures.
(4) For Robinson Helicopter Company Model R44 and R44 II helicopters identified in paragraph (c)(7) of this AD, within 36 months or at the next float inflation reservoir (reservoir) overhaul after the effective date of this AD, whichever occurs first, perform the requirements in paragraphs (g)(4)(i) and (ii) of this AD. Thereafter, within intervals not to exceed six months, repeat the actions required by paragraph (g)(4)(ii) of this AD.
(i) Remove cable P/N 644.7501 or P/N 644.7502 from service, as applicable, and replace with cable P/N 644.7503; and remove each reservoir P/N 644.7701 from service and replace with reservoir P/N 644.7702 or P/N 644.7703.
(ii) Inspect the pull force on the float activation handle in accordance with FAA-approved procedures. The threshold for this pull force inspection must not exceed 25 lbf (111.2N). If the pull cable installation fails the test (if the pull force is greater than 25 lbf (111.2N)), before further flight, repair the cable installation, or deactivate and placard the emergency float system as inoperative in accordance with FAA-approved procedures.
(5) As of the effective date of this AD, do not install reservoir P/N 644.7701 and cable P/N 644.7501 or reservoir P/N 644.7701 and cable P/N 644.7502 on any Robinson Helicopter Company Model R44 or R44 II helicopter.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
Aircraft
Appliances and equipment
