2018-19-16: Engine Controls

Adoption of the Amendment Accordingly, under the authority delegated to me by the Administrator, the FAA amends 14 CFR part 39 as follows: PART 39--AIRWORTHINESS DIRECTIVES 0 1. The authority citation for part 39 continues to read as follows: Authority: 49 U.S.C. 106(g), 40113, 44701. Sec. 39.13 [Amended] 0 2. The FAA amends Sec. 39.13 by adding the following new airworthiness directive (AD): 2018-19-16 CFM International S.A.: Amendment 39-19416; Docket No. FAA-2018-0855; Product Identifier 2018-NE-31-AD. (a) Effective Date This AD is effective October 25, 2018. (b) Affected ADs None. (c) Applicability This AD applies to all CFM LEAP-1A23, -1A24, -1A24E1, -1A26, - 1A26E1, -1A26CJ, -1A29, -1A29CJ, -1A30, -1A32, -1A33, -1A33B2, and - 1A35A turbofan engines with full authority digital engine control (FADEC) software, part number (P/N) 2590M00P07, version L1A0510, or earlier, installed; and prognostic health monitoring (PHM) software, P/N 2784M64P01, version PL1A0510, or earlier, installed. (d) Subject Joint Aircraft System Component (JASC) Code 7600, Engine Controls. (e) Unsafe Condition This AD was prompted by aborted takeoffs after engines did not advance to the desired takeoff fan speed due to icing in the pressure sensor line. We are issuing this AD to prevent icing in the pressure sensor lines and inaccurate pressure sensor readings. The unsafe condition, if not addressed, could result failure of one or more engines, loss of thrust control, and loss of the airplane. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Required Actions (1) Within 90 days after the effective date of this AD, remove FADEC software, P/N 2590M00P07, version L1A0510, or earlier; and PHM software, P/N 2784M64P01, version PL1A0510, or earlier, from the engine. (2) Before further flight after the removal of the FADEC and PHMsoftware required by paragraph (g)(1), install FADEC and PHM software that is eligible for installation. (h) Installation Prohibition After 90 days from the effective date of this AD, do not operate any engine with FADEC software, P/N 2590M00P07, version L1A0510, or earlier, installed; and PHM software, P/N 2784M64P01, version PL1A0510, or earlier, installed. (i) Alternative Methods of Compliance (AMOCs) (1) The Manager, ECO Branch, FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. In accordance with 14 CFR 39.19, send your request to your principal inspector or local Flight Standards District Office, as appropriate. If sending information directly to the manager of the certification office, send it to the attention of the person identified in paragraph (j) of this AD. You may email your request to: ANE-AD-AMOC@faa.gov. (2) Before using any approved AMOC, notify your appropriate principal inspector, or lacking a principal inspector, the manager of the local flight standards district office/certificate holding district office. (j) Related Information For more information about this AD, contact Christopher McGuire, Aerospace Engineer, ECO Branch, FAA, 1200 District Avenue, Burlington, MA 01803; phone: 781-238-7120; fax: 781-238-7199; email: chris.mcguire@faa.gov. (k) Material Incorporated by Reference None.