2020-24-02: Auto flight, Flight controls, and Indicating/recording systems

Adoption of the Amendment \n\n\n\tAccordingly, under the authority delegated to me by the Administrator, the FAA amends 14 CFR part 39 as follows: \n\nPART 39--AIRWORTHINESS DIRECTIVES \n\n0 1. The authority citation for part 39 continues to read as follows: \n\n\n\tAuthority: 49 U.S.C. 106(g), 40113, 44701. \n\n\n\nSec. 39.13 (Amended) \n\n0 2. The FAA amends Sec. 39.13 by: 0 a. Removing Airworthiness Directive (AD) 2018-23-51, Amendment 39-19512 (83 FR 62697, December 6, 2018; corrected December 11, 2018 (83 FR 63561)), and 0 b. Adding the following new AD: \n\n2020-24-02 The Boeing Company: Amendment 39-21332; Docket No. FAA- 2020-0686; Product Identifier 2019-NM-035-AD. \n\n(a) Effective Date \n\n\n\tThis AD is effective November 20, 2020. \n\n(b) Affected ADs \n\n\n\tThis AD replaces AD 2018-23-51, Amendment 39-19512 (83 FR 62697, December 6, 2018; corrected December 11, 2018 (83 FR 63561)) (''AD 2018-23-51''). \n\n(c) Applicability \n\n\n\tThis AD applies to The Boeing Company Model 737-8 and 737-9 airplanes, certificated in any category, as identified in Boeing Special Attention Service Bulletin 737-31-1860, Revision 1, dated July 2, 2020. \n\n(d) Subject \n\n\n\tAir Transport Association (ATA) of America Code 22, Auto flight; 27, Flight controls; and 31, Indicating/recording systems. \n\n(e) Unsafe Condition \n\n\n\tThis AD was prompted by the potential for a single erroneously high angle of attack (AOA) sensor input received by the flight control system to result in repeated airplane nose-down trim of the horizontal stabilizer, which, in combination with multiple flight deck effects, could affect the flightcrew's ability to accomplish continued safe flight and landing. \n\n(f) Compliance \n\n\n\tComply with this AD within the compliance times specified, unless already done. \n\n(g) Installation/Verification of Flight Control Computer (FCC) Operational Program Software (OPS) \n\n\n\tBefore further flight, install FCC OPS software version P12.1.2, part number (P/N) 2274-COL-AC2-26, or later-approved software versions, on FCC A and FCC B, and do a software installation verification. During the installation verification, if the approved software part number is not shown as being installed on FCC A and FCC B, before further flight, do corrective actions until the approved software part number is installed on FCC A and FCC B. Later-approved software versions are only those Boeing software versions that are approved as a replacement for the applicable software, and are approved as part of the type design by the FAA after the effective date of this AD. Accomplishment of all applicable actions identified as ''RC'' (required for compliance) in, and in accordance with, the Accomplishment Instructions of Boeing Alert Requirements Bulletin 737-22A1342 RB, dated November 17, 2020, is acceptable for compliance with the requirements of this paragraph. \n\n\n\n((Page 74585)) \n\n\n\n\n\tNote 1 to paragraph (g): Guidance for doing the installation and installation verification of the FCC OPS software can be found in Boeing 737-7/8/8200/9/10 Aircraft Maintenance Manual (AMM), Section 22-11-33. \n\n\n\n\n\tNote 2 to paragraph (g): Guidance for accomplishing the actions required by paragraph (g) can also be found in Boeing Alert Service Bulletin 737-22A1342, dated November 17, 2020, which is referred to in Boeing Alert Requirements Bulletin 737-22A1342 RB, dated November 17, 2020. \n\n(h) Airplane Flight Manual (AFM) Revisions \n\n\n\tBefore further flight, revise the existing AFM to include the changes specified in paragraphs (h)(1) through (10) of this AD. Revising the existing AFM to include the changes specified in paragraphs (h)(2) through (10) of this AD may be done by inserting a copy of figure 1 to paragraph (h)(2) through figure 9 to paragraph (h)(10) into the existing AFM. \n\t(1) In the Certificate Limitations and Operating Procedures chapters, remove the information identified as ''Required by AD 2018-23-51.'' \n\t(2) In the OperatingProcedures chapter, revise the General paragraph to include the information in figure 1 to paragraph (h)(2) of this AD. BILLING CODE 4910-13-P (GRAPHIC) (TIFF OMITTED) TR20NO20.031 \n\n\n\t(3) In the Operating Procedures chapter, replace the existing Airspeed Unreliable paragraph with the information in figure 2 to paragraph (h)(3) of this AD. \n\n((Page 74586)) \n\n(GRAPHIC) (TIFF OMITTED) TR20NO20.032 \n\n\n\n((Page 74587)) \n\n\n\n(GRAPHIC) (TIFF OMITTED) TR20NO20.033 \n\n\n\t(4) In the Operating Procedures chapter, replace the existing Runaway Stabilizer paragraph with the information in figure 3 to paragraph (h)(4) of this AD. \n\n((Page 74588)) \n\n(GRAPHIC) (TIFF OMITTED) TR20NO20.034 \n\n\n\t(5) In the Operating Procedures chapter, replace the existing Stabilizer Trim Inoperative paragraph with the information in figure 4 to paragraph (h)(5) of this AD. \n\n((Page 74589)) \n\n(GRAPHIC) (TIFF OMITTED) TR20NO20.035 \n\n\n\t(6) In the Operating Procedures chapter, add the informationin figure 5 to paragraph (h)(6) of this AD. (GRAPHIC) (TIFF OMITTED) TR20NO20.036 \n\n\n\t(7) In the Operating Procedures chapter, add the information in figure 6 to paragraph (h)(7) of this AD. \n\n((Page 74590)) \n\n(GRAPHIC) (TIFF OMITTED) TR20NO20.037 \n\n\n\t(8) In the Operating Procedures chapter, add the information in figure 7 to paragraph (h)(8) of this AD. (GRAPHIC) (TIFF OMITTED) TR20NO20.038 \n\n\n\t(9) In the Operating Procedures chapter, add the information in figure 8 to paragraph (h)(9) of this AD. \n\n((Page 74591)) \n\n(GRAPHIC) (TIFF OMITTED) TR20NO20.039 \n\n\n\t(10) In the Operating Procedures chapter, add the information in figure 9 to paragraph (h)(10) of this AD. (GRAPHIC) (TIFF OMITTED) TR20NO20.040 \n\n(i) Minimum Equipment List (MEL) Provisions for Inoperative Flight Control System Functions \n\n\n\tIn the event that the airplane functions associated with the flight control system as modified by this AD are inoperative, an airplane may be operated (dispatched) only if the provisions specified in figure 10 to paragraph (i) of this AD are incorporated into the operator's existing FAA-approved MEL. \n\n((Page 74592)) \n\n(GRAPHIC) (TIFF OMITTED) TR20NO20.041 \n\n\n\n\n\tNote 3 to paragraph (i): The MEL provisions specified in figure 10 to paragraph (i) of this AD correspond to Master Minimum Equipment List (MMEL) items 22-10-01B, 22-10-02, 22-10-03, 22-11-01, 22-11-02, 22-11-05-02B, 22-11-06-02B, 22-11-08-01A, 22-11-08-01B, 22-11-10A, 22-11-10B, and 27-41-01, in the existing FAA-approved Boeing 737 MAX B-737-8/-9 MMEL, Revision 2, dated April 10, 2020, which can be found on the Flight Standards Information Management System (FSIMS) website, https://fsims.faa.gov/PICResults.aspx?mode=Publication&doctype=MMELByModel. \n\n(j) Installation/Verification of MAX Display System (MDS) Software, Removal of INOP Markers \n\n\n\tBefore further flight, do all applicable actions identified as ''RC'' in, and in accordance with, the Accomplishment Instructions ofBoeing Special Attention Service Bulletin 737-31-1860, Revision 1, dated July 2, 2020. \n\n(k) Horizontal Stabilizer Trim Wire Bundle Routing Change \n\n\n\tBefore further flight, do all applicable actions identified as ''RC'' in, and in accordance with, the Accomplishment Instructions of Boeing Special Attention Service Bulletin 737-27-1318, Revision 2, dated November 10, 2020. \n\n(l) AOA Sensor System Test \n\n\n\tBefore further flight, do all applicable actions identified as ''RC'' for the ''Angle of Attack (AOA) Sensor System Test'' specified in, and in accordance with, the Accomplishment Instructions of Boeing Special Attention Service Bulletin 737-00- 1028, dated July 20, 2020. \n\n(m) Operational Readiness Flight \n\n\n\t(1) After accomplishment of all applicable required actions in paragraphs (g) through (l) of this AD, do all applicable actions identified as ''RC'' for the ''Operational Readiness Flight'' specified in, and in accordance with, the Accomplishment Instructions of Boeing Special Attention Service Bulletin 737-00- 1028, dated July 20, 2020. The ''Operational Readiness Flight'' required by this paragraph must be accomplished before any other flight. A special flight permit is not required to accomplish the ''Operational Readiness Flight'' required by this paragraph. \n\t(2) After the ''Operational Readiness Flight'' and before further flight, any mechanical irregularities that occurred during the ''Operational Readiness Flight'' must be resolved following the operator's FAA-approved maintenance or inspection program, as applicable. \n\n(n) Special Flight Permits \n\n\n\tSpecial flight permits may be issued in accordance with 14 CFR 21.197 and 21.199 to operate the airplane to a location where the actions of this AD can be performed. \n\n(o) Credit for Previous Actions \n\n\n\t(1) This paragraph provides credit for the actions specified in paragraph (j) of this AD, if those actions were performed before the effective date of this AD using Boeing Special Attention Service Bulletin 737-31-1860, dated June 12, 2020. \n\t(2) This paragraph provides credit for the actions specified in paragraph (k) of this AD, if those actions were performed before the effective date of this AD using Boeing Special Attention Service Bulletin 737-27-1318, dated June 10, 2020, or Revision 1, dated June 24, 2020, provided the 14 Installation Deviation Records (IDRs) identified in paragraph 1.D., ''Description,'' of Boeing Special Attention Service Bulletin 737-27-1318, Revision 2, dated November 10, 2020, have been incorporated on the airplane. Accomplishment of FAA-approved Boeing IDRs not identified in paragraph 1.D., ''Description,'' of Boeing Special Attention Service Bulletin 737- 27-1318, Revision 2, dated November 10, 2020, before the effective date of this AD, is acceptable for compliance with the corresponding RC steps specified in Special Attention Service Bulletin 737-27- 1318, Revision 1, dated June 10, 2020, provided those IDRs reference BoeingSpecial Attention Service Bulletin 737-27-1318, Revision 1, dated June 10, 2020. \n\n((Page 74593)) \n\n(p) Alternative Methods of Compliance (AMOCs) \n\n\n\t(1) The Manager, Seattle ACO 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 (q)(1) of this AD. Information may be emailed to: [email protected]. \n\t(2) Before using any approved AMOC, notify your appropriate principal inspector, or lacking a principal inspector, the manager of the responsible Flight Standards Office. \n\t(3) AMOCs approved previously for AD 2018-23-51 are not approved as AMOCs for this AD. \n\t(4) For service information that contains steps that are labeledas RC, the provisions of paragraphs (p)(4)(i) and (ii) of this AD apply. \n\t(i) The steps labeled as RC, including substeps under an RC step and any figures identified in an RC step, must be done to comply with the AD. If a step or substep is labeled ''RC Exempt,'' then the RC requirement is removed from that step or substep. An AMOC is required for any deviations to RC steps, including substeps and identified figures. \n\t(ii) Steps not labeled as RC may be deviated from using accepted methods in accordance with the operator's maintenance or inspection program without obtaining approval of an AMOC, provided the RC steps, including substeps and identified figures, can still be done as specified, and the airplane can be put back in an airworthy condition. \n\n(q) Related Information \n\n\n\t(1) For more information about this AD, contact Ian Won, Manager, Seattle ACO Branch, FAA, 2200 South 216th St., Des Moines, WA 98198; phone and fax: 206-231-3500; email: [email protected]. \n\t(2) Service information identified in this AD that is not incorporated by reference is available at the addresses specified in paragraphs (r)(3) and (4) of this AD. \n\n(r) Material Incorporated by Reference \n\n\n\t(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. \n\t(2) You must use this service information as applicable to do the actions required by this AD, unless the AD specifies otherwise. \n\t(i) Boeing Alert Requirements Bulletin 737-22A1342 RB, dated November 17, 2020. \n\t(ii) Boeing Special Attention Service Bulletin 737-00-1028, dated July 20, 2020. \n\t(iii) Boeing Special Attention Service Bulletin 737-27-1318, Revision 2, dated November 10, 2020. \n\t(iv) Boeing Special Attention Service Bulletin 737-31-1860, Revision 1, dated July 2, 2020. \n\t(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; internet https://www.myboeingfleet.com. \n\t(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. \n\t(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 [email protected], or go to: https://www.archives.gov/federal-register/cfr/ibr-locations.html. \n\n\n\tIssued on November 18, 2020. Lance T. Gant, Director, Compliance & Airworthiness Division, Aircraft Certification Service. (FR Doc. 2020-25844 Filed 11-18-20; 4:15 pm) BILLING CODE 4910-13-C