Airworthiness Directives; The Boeing Company Airplanes; Correction

Issuing agencies

Abstract

The FAA is correcting an airworthiness directive (AD) that was published in the Federal Register. That AD applies to certain The Boeing Company Model 787-8, 787-9, and 787-10 airplanes. As published, a paragraph reference specified in the regulatory text is incorrect. This document corrects that error. In all other respects, the original document remains the same.

Full Text

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<title>Federal Register, Volume 91 Issue 204 (Friday, October 23, 2026)</title>
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[Federal Register Volume 91, Number 204 (Friday, October 23, 2026)]
[Rules and Regulations]
[Pages 66785-66791]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2026-21686]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2026-2712; Project Identifier AD-2025-00931-T; 
Amendment 39-23483; AD 2026-20-10]
RIN 2120-AA64


Airworthiness Directives; The Boeing Company Airplanes; 
Correction

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule; correction.

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SUMMARY: The FAA is correcting an airworthiness directive (AD) that was 
published in the Federal Register. That AD applies to certain The 
Boeing Company Model 787-8, 787-9, and 787-10 airplanes. As published, 
a paragraph reference specified in the regulatory text is incorrect. 
This document corrects that error. In all other respects, the original 
document remains the same.

DATES: This correction is effective November 12, 2026. The effective 
date of AD 2026-20-10 remains November 12, 2026.
    The Director of the Federal Register approved the incorporation by 
reference of a certain publication listed in this AD as of November 12, 
2026 (91 FR 64259, October 8, 2026).
    The Director of the Federal Register approved the incorporation by 
reference of a certain other publication listed in this AD as of 
October 11, 2019 (84 FR 54765, October 11, 2019).

ADDRESSES: 
    AD Docket: You may examine the AD docket at <a href="http://regulations.gov">regulations.gov</a> by 
searching for and locating Docket No. FAA-2026-2712; or in person at 
Docket Operations between 9 a.m. and 5 p.m., Monday through Friday, 
except Federal holidays. The AD docket contains this final rule; 
correction, any comments received, and other information. The street 
address for Docket Operations is U.S. Department of Transportation, 
Docket Operations, M-30, West Building Ground Floor, Room W12-140, 1200 
New Jersey Avenue SE, Washington, DC 20590.
    Material Incorporated by Reference:
    <bullet> For Boeing material 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 <a href="http://myboeingfleet.com">myboeingfleet.com</a>.
    <bullet> You may view this material 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. It is also available at <a href="http://regulations.gov">regulations.gov</a> under 
Docket No. FAA-2026-2712.

FOR FURTHER INFORMATION CONTACT: Emanuel Chaves Torres, Aviation Safety 
Engineer, FAA, 2200 South 216th St., Des Moines, WA 98198; phone: 562-
627-5350; email: <a href="/cdn-cgi/l/email-protection#11747c707f64747d3f7279706774623f657e63637462517770703f767e67"><span class="__cf_email__" data-cfemail="3d58505c53485851135e555c4b584e1349524f4f584e7d5b5c5c135a524b">[email&#160;protected]</span></a>.

SUPPLEMENTARY INFORMATION:

Background

    AD 2026-20-10, Amendment 39-23483 (91 FR 64259, October 8, 2026) 
(AD 2026-20-10), requires repetitive operational checks of the leading 
edge (LE) outboard (OB) slats and applicable on-condition actions, 
revising the airplane flight manual (AFM) to prohibit flap retraction 
under icing conditions after landing, and revising the existing 
maintenance or inspection program, as applicable, to incorporate a new 
operation check. AD 2026-20-10 also requires replacing the LE outboard 
geared rotary actuator (GRA) with a LE outboard lockout actuator 
(LEOLA) at leading edge OB slat locations and revising the existing 
maintenance or inspection program, as applicable, to incorporate a new 
certification maintenance requirement (CMR). That AD applies to certain 
The Boeing Company Model 787-8, 787-9, and 787-10 airplanes.

Need for Correction

    As published, a paragraph reference specified in the regulatory 
text of AD 2026-20-10 is incorrect. Paragraph (l) of AD 2026-20-10 
inadvertently references paragraph (i) of the AD instead of paragraph 
(n) of the AD.

Material Incorporated by Reference Under 1 CFR Part 51

    The FAA reviewed Boeing Alert Requirements Bulletin B787-81205-
SB270055-00 RB, Issue 002, dated November 25, 2024. This material 
specifies procedures for replacing the LE outboard GRA with a LEOLA at 
leading edge slat 2 and slat 11 outboard locations and revising the 
operator's maintenance program to incorporate CMR document item 27-CMR-
14, ``Functionally check the Leading Edge Power Drive Unit Half System 
Torque Brake.''
    This AD also requires Boeing Alert Requirements Bulletin B787-
81205-SB270051-00 RB, Issue 001, dated July 5, 2019, which the Director 
of the Federal Register approved for incorporation by reference as of 
October 11, 2019 (84 FR 54765, October 11, 2019).
    This material is reasonably available because the interested 
parties have access to it through their normal course of business or by 
the means identified in the ADDRESSES section.

Correction of Publication

    This document corrects an error and correctly adds the AD as an 
amendment to 14 CFR 39.13. Although no other part of the preamble or 
regulatory information has been corrected, the FAA is publishing the 
entire rule in the Federal Register.
    The effective date of this AD remains November 12, 2026.
    Since this action only corrects a paragraph reference, it has no 
adverse economic impact and imposes no additional burden on any person. 
Therefore, the FAA has determined that notice and public comment 
procedures are unnecessary.

List of Subjects in 14 CFR Part 39

    Air transportation, Aircraft, Aviation safety, Incorporation by 
reference, Safety.

Adoption of the Amendment

    Accordingly, pursuant to the authority delegated to me by the 
Administrator, the Federal Aviation Administration amends part 39 of 
the Federal Aviation Regulations (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   [Corrected]

0
2. The FAA amends Sec.  39.13 by:

[[Page 66786]]

0
a. Removing Airworthiness Directive (AD) 2019-20-07, Amendment 39-19760 
(84 FR 54765, October 11, 2019); and
0
b. Adding the following new AD:

2026-20-10 The Boeing Company: Amendment 39-23483; Docket No. FAA-
2026-2712; Project Identifier AD-2025-00931-T.

(a) Effective Date

    This airworthiness directive (AD) is effective November 12, 
2026.

(b) Affected ADs

    This AD replaces AD 2019-20-07, Amendment 39-19760 (84 FR 54765, 
October 11, 2019) (AD 2019-20-07).

(c) Applicability

    This AD applies to The Boeing Company Model 787-8, 787-9, and 
787-10 airplanes, certificated in any category, as identified in 
Boeing Alert Requirements Bulletin B787-81205-SB270055-00 RB, Issue 
002, dated November 25, 2024.

(d) Subject

    Air Transport Association (ATA) of America Code 27, Flight 
Controls.

(e) Unsafe Condition

    This AD was prompted by a determination that the leading edge 
(LE) outboard (OB) slat system could be out of position without 
flight deck annunciation. The FAA is issuing this AD to address a 
potential condition in which the LE OB slat system could be out of 
position without flight deck annunciation. The unsafe condition, if 
not addressed, could result in insufficient lift, resulting in 
inability to maintain continued safe flight and landing.

(f) Compliance

    Comply with this AD within the compliance times specified, 
unless already done.

(g) Retained Required Actions, With No Changes

    This paragraph restates the requirements of paragraph (g) of AD 
2019-20-07, with no changes. Except as specified by paragraph (h) of 
this AD: At the applicable times specified in the ``Compliance'' 
paragraph of Boeing Alert Requirements Bulletin B787-81205-SB270051-
00 RB, Issue 001, dated July 5, 2019, do all applicable actions 
identified in, and in accordance with, the Accomplishment 
Instructions of Boeing Alert Requirements Bulletin B787-81205-
SB270051-00 RB, Issue 001, dated July 5, 2019.
    Note 1 to paragraph (g): Guidance for accomplishing the actions 
required by this AD can be found in Boeing Alert Service Bulletin 
B787-81205-SB270051-00, Issue 001, dated July 5, 2019, which is 
referred to in Boeing Alert Requirements Bulletin B787-81205-
SB270051-00 RB, Issue 001, dated July 5, 2019.

(h) Retained Exception to Service Information Specifications, With No 
Changes

    This paragraph restates the requirements of paragraph (h) of AD 
2019-20-07, with no changes. For purposes of determining compliance 
with the requirements of this AD: Where Boeing Alert Requirements 
Bulletin B787-81205-SB270051-00 RB, Issue 001, dated July 5, 2019, 
uses the phrase ``the Issue 001 date of Requirements Bulletin B787-
81205-SB270051-00 RB,'' this AD requires using ``October 11, 2019'' 
(the effective date of AD 2019-20-07).

(i) Retained Airplane Flight Manual (AFM) Revision To Prohibit Flap 
Retraction Under Icing Conditions, With No Changes

    This paragraph restates the requirements of paragraph (i) of AD 
2019-20-07, with no changes. Within 60 days after October 11, 2019 
(the effective date of AD 2019-20-07), revise the Limitations 
Section of the existing AFM to include the information in figure 1 
to paragraph (i) of this AD. This may be done by inserting a copy of 
figure 1 to paragraph (i) of this AD into the Limitations Section of 
the existing AFM.

                 Figure 1 to Paragraph (i): AFM Revision
------------------------------------------------------------------------
 
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Flap Operation After Landing (Required by AD 2019-20-07)
 
In order to prevent failure of the slat drive system after landing,
 flaps must not be retracted if:
 
    <bullet> Operating on the ground with ice, snow, slush, or standing
     water in icing conditions, or;
    <bullet> An accumulation of airframe ice is observed or suspected.
 
Under circumstances where the flight crew deems it necessary to retract
 the flaps for safety reasons, they must notify maintenance via an
 approved means.
------------------------------------------------------------------------

(j) Retained Maintenance or Inspection Program Revision To Incorporate 
a New Operation Check, With No Changes

    This paragraph restates the requirements of paragraph (j) of AD 
2019-20-07, with no changes. Within 60 days after October 11, 2019 
(the effective date of AD 2019-20-07), revise the existing 
maintenance or inspection program, as applicable, to incorporate the 
information specified in figure 2 to paragraph (j) of this AD. This 
may be done by inserting a copy of figure 2 to paragraph (j) of this 
AD into the existing maintenance or inspection program.

  Figure 2 to Paragraph (j): Maintenance or Inspection Program Revision
------------------------------------------------------------------------
 
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1. Cold Weather Maintenance Procedure--Handling
 
A. General
  (3) After an airplane lands in icing conditions, do the OPERATION
   CHECKS--SLAT/FLAP INSPECTION in this task before retracting the slats/
   flaps.
      NOTE: Icing conditions exist when OAT (on the ground) or TAT (in-
       flight only) is 50 [deg]F (10 [deg]C) or below, and any of the
       following exist:
          <bullet> When visible moisture (clouds, fog with visibility of
           one statute mile (1600 m) or less, rain, snow, sleet, ice
           crystals, and so on) is present.
          <bullet> When ice, snow, slush or standing water is present on
           the taxiways, or runways.
 
          (a) Do this inspection to make sure that contaminants (ice,
           snow, slush) are not present which can either obstruct
           retraction of the LE slats or TE flaps, or freeze the slats
           to the fixed leading edge after retraction.
 
          (b) The type and area of inspection is as follows:
              (1) Do an examination of the entire leading edge slats and
               trailing edge flaps areas.
 
G. Operation Checks
 
  (1) SLAT/FLAP INSPECTION
      After any landing in icing conditions, do this inspection with the
       slats/flaps (flaps 25 detent) fully extended (Figure 2):
 
      WARNING: MAKE SURE THAT YOU USE THE NECESSARY PRECAUTIONS IF
       PERSONNEL ARE NEAR THE FLIGHT CONTROL SURFACES. THE FLIGHT
       CONTROL SURFACES CAN MOVE QUICKLY. THIS CAN CAUSE INJURIES TO
       PERSONNEL AND DAMAGE TO EQUIPMENT.
 
      (a) Examine these areas for contaminants (ice, snow, slush):
          (1) Slats/flaps surfaces
          (2) Leading edge contact surfaces
              NOTE: ``Contact surfaces'' refers to the areas of the slat
               and the fixed wing that will be in contact after slat
               retraction.
          (3) Slat actuation areas, including exposed areas of the slat
           track cavity, and slat cove
          (4) Flap tracks, hinges, seals
 
      (b) Remove the contamination that you find.
------------------------------------------------------------------------


[[Page 66787]]


  Figure 2 to Paragraph (j): Maintenance or Inspection Program Revision
                                Continued
------------------------------------------------------------------------
 
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      (a) Confirm a contaminant-free condition in these areas
       immediately prior to retraction of the slats/flaps surfaces.
          (1) Slats/flaps surfaces
          (2) Leading edge contact surfaces
              NOTE: ``Contact surfaces'' refers to the areas of the slat
               and the fixed wing that will be in contact after slat
               retraction.
          (3) Slat actuation areas, including exposed areas of the slat
           track cavity, and slat cove
          (4) Flap tracks, hinges, seals
 
      (d) When the inspection is complete, do these steps:
          NOTE: These steps make sure that the leading edge slat system
           is functional.
          NOTE: Two persons are necessary to do these steps. One person
           will move the flap control lever in the flight compartment,
           and the other will confirm slat position from the ground.
          (1) Do not use Alternate mode to operate the surfaces.
              NOTE: The Alternate mode only allows extension of slats to
               the Middle (sealed) position and not to the Extended
               (gapped) position.
 
          WARNING: MAKE SURE THAT YOU USE THE NECESSARY PRECAUTIONS IF
           PERSONNEL ARE NEAR THE FLIGHT CONTROL SURFACES. THE FLIGHT
           CONTROL SURFACES CAN MOVE QUICKLY. THIS CAN CAUSE INJURIES TO
           PERSONNEL AND DAMAGE TO EQUIPMENT.
 
          (2) Retract the leading edge slats to the full up position
           (Flaps UP detent).
              (a) Make sure that you visually confirm from the ground
               that the slats have retracted to the Retracted (up)
               position.
          (3) Extend the leading edge slats to the full extend position
           (Flaps 25 detent).
              (a) Make sure that you visually confirm from the ground
               that the slats have extended to the Extended (gapped)
               position.
          (4) Retract the leading edge slats to the full up position
           (Flaps UP detent).
              (a) Make sure that you visually confirm from the ground
               that the slats have retracted to the Retracted (up)
               position.
 
      (e) When all of the above steps are completed, the OPERATION
       CHECKS--SLAT/FLAP INSPECTION is complete.
------------------------------------------------------------------------

BILLING CODE 4910-13-P

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Figure 2 to Paragraph (j): Maintenance or Inspection Program Revision 
Continued
[GRAPHIC] [TIFF OMITTED] TR23OC26.006


[[Page 66789]]



Figure 2 to Paragraph (j): Maintenance or Inspection Program Revision 
Continued
[GRAPHIC] [TIFF OMITTED] TR23OC26.007


[[Page 66790]]



Figure 2 to Paragraph (j): Maintenance or Inspection Program Revision 
Continued
[GRAPHIC] [TIFF OMITTED] TR23OC26.008

BILLING CODE 4910-13-C

(k) Retained No Alternative Actions or Intervals, With No Changes

    This paragraph restates the requirements of paragraph (k) of AD 
2019-20-07, with no changes. After the existing maintenance or 
inspection program has been revised as required by paragraph (j) of 
this AD, no alternative actions (e.g., inspections) or intervals may 
be used unless the actions or intervals are approved as an 
alternative method of compliance (AMOC) in accordance with the 
procedures specified in paragraph (p) of this AD.

(l) New Required Actions

    Except as specified by paragraph (n) of this AD: At the 
applicable times specified in the ``Compliance'' paragraph of Boeing 
Alert Requirements Bulletin B787-81205-SB270055-00 RB, Issue 002, 
dated November 25, 2024, do all applicable actions identified

[[Page 66791]]

in, and in accordance with, the Accomplishment Instructions of 
Boeing Alert Requirements Bulletin B787-81205-SB270055-00 RB, Issue 
002, dated November 25, 2024.
    Note 2 to paragraph (l): Guidance for accomplishing the actions 
required by this AD can be found in Boeing Alert Service Bulletin 
B787-81205-SB270055-00, Issue 002, dated November 25, 2024, which is 
referred to in Boeing Alert Requirements Bulletin B787-81205-
SB270055-00 RB, Issue 002, dated November 25, 2024.

(m) Terminating Action

    Accomplishing the actions required by paragraph (l) of this AD 
terminates the requirements of paragraphs (g), (i), and (j) of this 
AD for that airplane. After all affected airplanes in an operator's 
fleet have complied with paragraph (l) of this AD, the AFM revision 
required by paragraph (i) of this AD may be removed and the 
maintenance or inspection program revision required by paragraph (j) 
of this AD may be removed.

(n) Exceptions to Requirements Bulletin Specifications

    Where the Compliance Time column of the tables in the 
``Compliance'' paragraph of Boeing Alert Requirements Bulletin B787-
81205-SB270055-00 RB, Issue 002, dated November 25, 2024, refers to 
the Issue 001 date of Requirements Bulletin B787-81205-SB270055-00 
RB, this AD requires using the effective date of this AD.

(o) Credit for Previous Actions

    This paragraph provides credit for the actions specified in 
paragraph (l) of this AD, if those actions were performed before the 
effective date of this AD using Boeing Alert Requirements Bulletin 
B787-81205-SB270055-00 RB, Issue 001, dated December 12, 2023.

(p) 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 Continued Operational 
Safety Branch, send it to the attention of the person identified in 
paragraph (q)(1) of this AD. Information may be emailed to: 
<a href="/cdn-cgi/l/email-protection#21606c6e62614740400f464e57"><span class="__cf_email__" data-cfemail="4504080a06052324246b222a33">[email&#160;protected]</span></a>. Before using any approved AMOC, notify your 
appropriate principal inspector, or lacking a principal inspector, 
the manager of the responsible Flight Standards Office.
    (2) 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.
    (3) AMOCs approved for AD 2019-20-07 are approved as AMOCs for 
the corresponding provisions of paragraphs (g), (i), and (j) of this 
AD.

(q) Additional Information

    (1) For more information about this AD, contact Emanuel Chaves 
Torres, Aviation Safety Engineer, FAA, 2200 South 216th St., Des 
Moines, WA 98198; phone: 562-627-5350; email: 
<a href="/cdn-cgi/l/email-protection#7f1a121e110a1a13511c171e091a0c510b100d0d1a0c3f191e1e51181009"><span class="__cf_email__" data-cfemail="b1d4dcd0dfc4d4dd9fd2d9d0c7d4c29fc5dec3c3d4c2f1d7d0d09fd6dec7">[email&#160;protected]</span></a>.
    (2) Material identified in this AD that is not incorporated by 
reference is available at the address specified in paragraph (r)(5) 
of this AD.

(r) Material Incorporated by Reference

    (1) The Director of the Federal Register approved the 
incorporation by reference (IBR) of the material listed in this 
paragraph under 5 U.S.C. 552(a) and 1 CFR part 51.
    (2) You must use this material as applicable to do the actions 
required by this AD, unless this AD specifies otherwise.
    (3) The following material was approved for IBR on November 12, 
2026 (91 FR 64259, October 8, 2026).
    (i) Boeing Alert Requirements Bulletin B787-81205-SB270055-00 
RB, Issue 002, dated November 25, 2024.
    (ii) [Reserved]
    (4) The following material was approved for IBR on October 11, 
2019 (84 FR 54765, October 11, 2019).
    (i) Boeing Alert Requirements Bulletin B787-81205-SB270051-00 
RB, Issue 001, dated July 5, 2019.
    (ii) [Reserved]
    (5) For Boeing material 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 <a href="http://myboeingfleet.com">myboeingfleet.com</a>.
    (6) You may view this material 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.
    (7) You may view this material at the National Archives and 
Records Administration (NARA). For information on the availability 
of this material at NARA, visit <a href="http://www.archives.gov/federal-register/cfr/ibr-locations">www.archives.gov/federal-register/cfr/ibr-locations</a> or email <a href="/cdn-cgi/l/email-protection#4c2a3e6225223f3c292f382523220c222d3e2d622b233a"><span class="__cf_email__" data-cfemail="2c4a5e0245425f5c494f584543426c424d5e4d024b435a">[email&#160;protected]</span></a>.

    Issued on October 20, 2026.
Lona C. Saccomando,
Acting Deputy Director, Integrated Certificate Management Division, 
Aircraft Certification Service.
[FR Doc. 2026-21686 Filed 10-22-26; 8:45 am]
BILLING CODE 4910-13-P


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