2023-13-09: Flight controls

1. The authority citation for part 39 continues to read as follows: Authority: 49 U.S.C. 106(g), 40113, 44701. 2. The FAA amends § 39.13 by adding the following new airworthiness directive: 2023-13-09 The Boeing Company: Amendment 39-22494; Docket No. FAA-2022-0458; Project Identifier AD-2021-00633-T. (a) Effective Date This airworthiness directive (AD) is effective August 24, 2023. (b) Affected ADs None. (c) Applicability This AD applies to all The Boeing Company Model 767-200, -300, -300F, -400ER, and -2C series airplanes, certificated in any category. (d) Subject Air Transport Association (ATA) of America Code 27, Flight controls; (e) Unsafe Condition This AD was prompted by reports of inoperative manual and alternate horizontal stabilizer trim switches; an investigation found that certain drain holes were blocked, causing water and ice to collect and subsequently cover the limit switch and position transmitter modules (LSPTMs), which affected their function. The FAA is issuing this AD to address collected water or ice that could damage the LSPTMs and cause stabilizer trim position sensors to generate corrupt or erroneous signals to the flight crew. This condition, if not addressed, could result in misleading or confusing flight deck indications, a high speed overrun during takeoff, or a low altitude stall immediately after takeoff. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Required Actions (1) For all Model 767-200, -300, -300F, and -400ER airplanes: Except as specified by paragraph (h) of this AD, at the applicable times specified in the "Compliance" paragraph of Boeing Alert Requirements Bulletin 767-27A0240 RB, dated January 19, 2021, do all applicable actions identified in, and in accordance with, the Accomplishment Instructions of Boeing Alert Requirements Bulletin 767-27A0240 RB, dated January 19, 2021. Note 1 to paragraph (g)(1): Guidance for accomplishing the actions required by this AD can be found in Boeing Alert Service Bulletin 767-27A0240, dated January 19, 2021, which is referred to in Boeing Alert Requirements Bulletin 767-27A0240 RB, dated January 19, 2021. (2) For Model 767-200, -300, -300F, and -400ER airplanes, as identified in Boeing Alert Requirements Bulletin 767-27A0243 RB, dated May 28, 2021: Except as specified by paragraph (h) of this AD, at the applicable times specified in the "Compliance" paragraph of Boeing Alert Requirements Bulletin 767-27A0243 RB, dated May 28, 2021, do all applicable actions identified in, and in accordance with, the Accomplishment Instructions of Boeing Alert Requirements Bulletin 767-27A0243 RB, dated May 28, 2021. Accomplishing the installation of two new drain holes required by this paragraph terminates the repetitive inspections of the drain holes required by paragraph (g)(1) of this AD. Note 2 to paragraph (g)(2): Guidance for accomplishing the actions required by this AD can be found in Boeing Alert Service Bulletin 767-27A0243, dated May 28, 2021, which is referred to in Boeing Alert Requirements Bulletin 767-27A0243 RB, dated May 28, 2021. (3) For Model 767-2C airplanes: Within 90 days after the effective date of this AD, inspect the LSPTMs, LSPTM electrical wiring, drain holes, and leveling compound; install two new drain holes as applicable; and do applicable on-condition actions in accordance with a method approved by the Manager, AIR-520 Continued Operational Safety Branch, FAA. (h) Exceptions to Service Information Specifications (1) Where Boeing Alert Requirements Bulletin 767-27A0243 RB, dated May 28, 2021, uses the phrase "the original issue date of the Requirements Bulletin 767-27A0243 RB," this AD requires using "the effective date of this AD." (2) Where Boeing Alert Requirements Bulletin 767-27A0240 RB, dated January 19, 2021, uses the phrase "the original issue date of the Requirements Bulletin 767-27A0240 RB," this AD requires using "the effective date of this AD." (3) Where Boeing Alert Requirements Bulletin 767-27A0243 RB, dated May 28, 2021, specifies a compliance time for Action 1 (accomplishment of Boeing Alert Requirements Bulletin 767-27A0240 RB, dated January 19, 2021), for this AD the compliance times for accomplishing the actions in Boeing Alert Requirements Bulletin 767-27A0240 RB, dated January 19, 2021, are as specified in paragraph (g)(1) of this AD. (4) Where the "Repeat Interval (Not to Exceed)" column of the Compliance tables in Boeing Alert Requirements Bulletin 767-27A0240 RB, dated January 19, 2021, specifies "90 days," this AD requires using "150 days." (i) Alternative Methods of Compliance (AMOCs) (1) The Manager, AIR-520 Continued Operational Safety 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 responsible Flight Standards 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)(1) of this AD. Information may be emailed to: [email protected]. (2) Before using any approved AMOC, notify your appropriate principal inspector, or lacking a principal inspector, the manager of the responsible Flight Standards Office. (3) An AMOC that provides an acceptable level of safety may be used for any repair, modification, or alteration required by this AD if it is approved by The Boeing Company Organization Designation Authorization (ODA) that has been authorized by the Manager, AIR-520 Continued Operational Safety Branch, FAA, to make those findings. To be approved, the repair method, modification deviation, or alteration deviation must meet the certification basis of the airplane, and the approval must specifically refer to this AD. (j) Additional Information (1) For more information about this AD, contact Doug Tsuji, Aviation Safety Engineer, FAA, 2200 South 216th St., Des Moines, WA 98198; phone: 206-231-3548; email: [email protected]. (2) Service information identified in this AD that is not incorporated by reference is available at the addresses specified in paragraphs (k)(3) and (4) of this AD. (k) Material Incorporated by Reference (1) The Director of the Federal Register approved the incorporation by reference (IBR) of the service information listed in this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51. (2) You must use this service information as applicable to do the actions required by this AD, unless the AD specifies otherwise. (i) Boeing Alert Requirements Bulletin 767-27A0240 RB, dated January 19, 2021. (ii) Boeing Alert Requirements Bulletin 767-27A0243 RB, dated May 28, 2021. (3) For service information identified in this AD, contact Boeing Commercial Airplanes, Attention: Contractual & Data Services (C&DS), 2600 Westminster Blvd., MC 110-SK57, Seal Beach, CA 90740-5600; telephone 562-797-1717; website myboeingfleet.com. (4) You may view this service information at the FAA, Airworthiness Products Section, Operational Safety Branch, 2200 South 216th St., Des Moines, WA. For information on the availability of this material at the FAA, call 206-231-3195. (5) You may view this service information that is incorporated by reference at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, [email protected], or go to: www.archives.gov/federal-register/cfr/ibr-locations.html. Issued on June 28, 2023. Michael Linegang, Acting Director, Compliance & Airworthiness Division, Aircraft Certification Service. [FR Doc. R1-2023-15305 Filed 7-31-23; 8:45 am]BILLING CODE 0099-10-D