AD 93-14-19R1
final rule
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 767-200 Series | Airworthiness Directives; The Boeing Company Airplanes |
| aircraft | The Boeing Company | 767-2C Series | Airworthiness Directives; The Boeing Company Airplanes |
| aircraft | The Boeing Company | 767-300 Series | Airworthiness Directives; The Boeing Company Airplanes |
| aircraft | The Boeing Company | 767-300F Series | Airworthiness Directives; The Boeing Company Airplanes |
| aircraft | The Boeing Company | 767-400ER Series | Airworthiness Directives; The Boeing Company Airplanes |
Unsafe Condition
Disbonding of the trailing edge wedge of the leading edge slat could result in reduced maneuver margins, reduced speed margins to stall, and unexpected roll before stall warning, adversely affecting controllability.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect for disbonding of the trailing edge wedge of the leading edge slat; repair if necessary.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
before further flight
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
The Boeing Company Model 767-200 Series, 767-2C Series, 767-300 Series, 767-300F Series, and 767-400ER Series airplanes.
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Wings
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - 93-14-19R1.pdf Copy URL Document Versions Feedback DetailsAttachments/Public Comments AD Number: 93-14-19R1 Document Type: AD Final Rules Docket Number: FAA-2018-0582 Subject Heading: Airworthiness Directives; The Boeing Company Airplanes Subject: Wings Status: Current Citation: (Federal Register Volume 83, Number 227 (Monday, November 26, 2018)) Citation Publish Date: 11/26/2018 Effective Date: 11/26/2018 Make: The Boeing Company Model: 767-200 Series | 767-2C Series | 767-300 Series | 767-300F Series | 767-400ER Series Product Type: Aircraft Product Subtype: Large Airplane Affected AD: Superseded AD: 93-14-19 Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: Automatic Zoom Actual Size Page Fit Page Width 50% 75% 100% 125% 150% 200% 300% 400% 125% of 5 1 [Federal Register Volume 83, Number 227 (Monday, November 26, 2018)] [Rules and Regulations] [Pages 60337-60339] From the Federal Register Online via the Government Publishing Office [www.gpo.gov] [FR Doc No: 2018-25494] –––––––––––––––––––––––––––––––––– DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA-2018-0582; Product Identifier 2018-NM-085-AD; Amendment 39-19503; AD 93-14-19R1] RIN 2120-AA64 Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), Department of Transportation (DOT). ACTION: Final rule; removal. –––––––––––––––––––––––––––––––––– SUMMARY: We are removing Airworthiness Directive (AD) 93-14-19, which applied to certain The Boeing Company Model 767-200 and -300 series airplanes. AD 93-14-19 required inspections for disbonding of the trailing edge wedge of the leading edge slat; and repair, if necessary. We issued AD 93-14-19 to prevent the loss of a trailing edge wedge, which could result in reduced maneuver margins, reduced speed margins to stall, and unexpected roll before stall warning, all of which would adversely affect the controllability of the airplane. Since we issued AD 93-14-19, an updated stability and control analysis showed that the worst-case scenario of a trailing edge wedge disbond in-flight would not adversely affect the controllability of the airplane. Accordingly, AD 93-14-19 is removed. DATES: This AD becomes effective November 26, 2018. ADDRESSES: Examining the AD Docket You may examine the AD docket on the internet at http://www.regulations.gov by searching for and locating Docket No. FAA-2018-0582; 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 AD, the regulatory evaluation, any comments received, and other information. The address for Docket Operations (telephone 800-647-5527) 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. 2 FOR FURTHER INFORMATION CONTACT: Wayne Lockett, Aerospace Engineer, Airframe Section, FAA, Seattle ACO Branch, 2200 South 216th St., Des Moines, WA 98198; phone and fax: 206-231-3524; email: wayne.lockett@faa.gov. SUPPLEMENTARY INFORMATION: Discussion We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR part 39 by removing AD 93-14-19, Amendment 39-8644 (58 FR 41177, August 3, 1993) (“AD 93-14-19”). AD 93-14-19 applied to certain The Boeing Company Model 767-200 and -300 series airplanes. The NPRM published in the Federal Register on July 17, 2018 (83 FR 33162) (“the NPRM”). The NPRM was prompted by an updated stability and control analysis that showed the worst-case scenario of a trailing edge wedge disbond in-flight would not adversely affect the controllability of the airplane. The NPRM proposed to remove AD 93-14-19. We are issuing this AD to remove AD 93-14-19. Comments We gave the public the opportunity to participate in developing this AD. The following presents the comments received on the NPRM and the FAA's response to each comment. Support for the NPRM Boeing and Delta Air Lines (DAL) stated their support for the proposed AD. United Airlines stated that it has no objection to the proposed rule. Request to Withdraw the NPRM Airline Pilots Association, International (ALPA) stated that it opposes the rescission of AD 93- 14-19 because the FAA continues to issue similar ADs effective to other airplanes. ALPA also noted that the required actions of AD 93-14-19 are relatively low cost. From these statements, we infer that ALPA was requesting that we withdraw the NPRM. We do not agree with the commenter's request. Updated stability and control data for the affected airplanes shows that damage and disbonding of the leading edge slat wedge is insufficient to be considered an airplane-level safety item. The updated data shows that there is sufficient lateral control up to stick shaker to counter any rolling moment caused by a missing or damaged slat wedge. Therefore, we have not changed this AD in this regard. Request to Rescind Similar AD on another Airplane Model DAL asked if AD 2017-22-12, Amendment 39-19092 (82 FR 55027, November 20, 2017) (“AD 2017-22-12”), would also be considered for rescission. DAL reasoned that AD 2017-22-12 required, among other things, inspection of the same structure (the trailing edge slat wedge of the leading edge slats) on The Boeing Company Model 757 series airplanes for the same reason (disbonding of slats) as AD 93-14-19. We agree to clarify. We do not find it appropriate to rescind AD 2017-22-12 at this time. The flight characteristics of The Boeing Company Model 757 series airplanes are different than the flight characteristics of The Boeing Company Model 767 series airplanes, and the stability and control analysis of the one model does not transfer to the other model. However, if new data indicates that the identified unsafe condition no longer exists on Model 757 airplanes, we might consider additional rulemaking at that time. We have not changed this AD in this regard.
Document Text
Show stored source text (verify against official source)
AD Final Rules - 93-14-19R1.pdf Copy URL Document Versions Feedback DetailsAttachments/Public Comments AD Number: 93-14-19R1 Document Type: AD Final Rules Docket Number: FAA-2018-0582 Subject Heading: Airworthiness Directives; The Boeing Company Airplanes Subject: Wings Status: Current Citation: (Federal Register Volume 83, Number 227 (Monday, November 26, 2018)) Citation Publish Date: 11/26/2018 Effective Date: 11/26/2018 Make: The Boeing Company Model: 767-200 Series | 767-2C Series | 767-300 Series | 767-300F Series | 767-400ER Series Product Type: Aircraft Product Subtype: Large Airplane Affected AD: Superseded AD: 93-14-19 Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: Automatic Zoom Actual Size Page Fit Page Width 50% 75% 100% 125% 150% 200% 300% 400% 125% of 5 1 [Federal Register Volume 83, Number 227 (Monday, November 26, 2018)] [Rules and Regulations] [Pages 60337-60339] From the Federal Register Online via the Government Publishing Office [www.gpo.gov] [FR Doc No: 2018-25494] –––––––––––––––––––––––––––––––––– DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA-2018-0582; Product Identifier 2018-NM-085-AD; Amendment 39-19503; AD 93-14-19R1] RIN 2120-AA64 Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), Department of Transportation (DOT). ACTION: Final rule; removal. –––––––––––––––––––––––––––––––––– SUMMARY: We are removing Airworthiness Directive (AD) 93-14-19, which applied to certain The Boeing Company Model 767-200 and -300 series airplanes. AD 93-14-19 required inspections for disbonding of the trailing edge wedge of the leading edge slat; and repair, if necessary. We issued AD 93-14-19 to prevent the loss of a trailing edge wedge, which could result in reduced maneuver margins, reduced speed margins to stall, and unexpected roll before stall warning, all of which would adversely affect the controllability of the airplane. Since we issued AD 93-14-19, an updated stability and control analysis showed that the worst-case scenario of a trailing edge wedge disbond in-flight would not adversely affect the controllability of the airplane. Accordingly, AD 93-14-19 is removed. DATES: This AD becomes effective November 26, 2018. ADDRESSES: Examining the AD Docket You may examine the AD docket on the internet at http://www.regulations.gov by searching for and locating Docket No. FAA-2018-0582; 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 AD, the regulatory evaluation, any comments received, and other information. The address for Docket Operations (telephone 800-647-5527) 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. 2 FOR FURTHER INFORMATION CONTACT: Wayne Lockett, Aerospace Engineer, Airframe Section, FAA, Seattle ACO Branch, 2200 South 216th St., Des Moines, WA 98198; phone and fax: 206-231-3524; email: wayne.lockett@faa.gov. SUPPLEMENTARY INFORMATION: Discussion We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR part 39 by removing AD 93-14-19, Amendment 39-8644 (58 FR 41177, August 3, 1993) (“AD 93-14-19”). AD 93-14-19 applied to certain The Boeing Company Model 767-200 and -300 series airplanes. The NPRM published in the Federal Register on July 17, 2018 (83 FR 33162) (“the NPRM”). The NPRM was prompted by an updated stability and control analysis that showed the worst-case scenario of a trailing edge wedge disbond in-flight would not adversely affect the controllability of the airplane. The NPRM proposed to remove AD 93-14-19. We are issuing this AD to remove AD 93-14-19. Comments We gave the public the opportunity to participate in developing this AD. The following presents the comments received on the NPRM and the FAA's response to each comment. Support for the NPRM Boeing and Delta Air Lines (DAL) stated their support for the proposed AD. United Airlines stated that it has no objection to the proposed rule. Request to Withdraw the NPRM Airline Pilots Association, International (ALPA) stated that it opposes the rescission of AD 93- 14-19 because the FAA continues to issue similar ADs effective to other airplanes. ALPA also noted that the required actions of AD 93-14-19 are relatively low cost. From these statements, we infer that ALPA was requesting that we withdraw the NPRM. We do not agree with the commenter's request. Updated stability and control data for the affected airplanes shows that damage and disbonding of the leading edge slat wedge is insufficient to be considered an airplane-level safety item. The updated data shows that there is sufficient lateral control up to stick shaker to counter any rolling moment caused by a missing or damaged slat wedge. Therefore, we have not changed this AD in this regard. Request to Rescind Similar AD on another Airplane Model DAL asked if AD 2017-22-12, Amendment 39-19092 (82 FR 55027, November 20, 2017) (“AD 2017-22-12”), would also be considered for rescission. DAL reasoned that AD 2017-22-12 required, among other things, inspection of the same structure (the trailing edge slat wedge of the leading edge slats) on The Boeing Company Model 757 series airplanes for the same reason (disbonding of slats) as AD 93-14-19. We agree to clarify. We do not find it appropriate to rescind AD 2017-22-12 at this time. The flight characteristics of The Boeing Company Model 757 series airplanes are different than the flight characteristics of The Boeing Company Model 767 series airplanes, and the stability and control analysis of the one model does not transfer to the other model. However, if new data indicates that the identified unsafe condition no longer exists on Model 757 airplanes, we might consider additional rulemaking at that time. We have not changed this AD in this regard.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.
Related Airworthiness Directives
2026-05-07
final ruleAirworthiness Directives; The Boeing Company Airplanes
Unsafe Condition: Discovery of a crack at one of the forward lower fastener holes following replacement of a cracked underwing longeron (UWL) fitting. Such cracking could result in loss in the primary load path betw...
2026-05-03 Recurring
final ruleAirworthiness Directives; The Boeing Company Airplanes
Unsafe Condition: scribe lines found at skin lap joints and butt joints, around external repairs and antennas, and at locations where external decals had been cut, which could develop into fatigue cracks in the skin...
2026-04-10 Recurring
final ruleAirworthiness Directives; The Boeing Company Airplanes
Unsafe Condition: Corrosion damage on the Model 767 satellite communications (SATCOM) high gain antenna adapter plate, which could result in parts departing the airplane (PDA). A PDA event of the SATCOM high gain an...
2025-15-08 Recurring
final ruleAirworthiness Directives; The Boeing Company Airplanes
Unsafe Condition: uncommanded fore and aft movement of the Captain's and First Officer's seats, which could cause a flight control obstruction or unintended flight control input, resulting in the loss of the ability...