AD 74-12-07
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | DC-10-10 | Airworthiness Directives; MCDONNELL DOUGLAS DC-10-10, DC-10-10F, DC-10-30, DC-10-30F, and DC-10-40 Airplanes |
| aircraft | The Boeing Company | DC-10-10F | Airworthiness Directives; MCDONNELL DOUGLAS DC-10-10, DC-10-10F, DC-10-30, DC-10-30F, and DC-10-40 Airplanes |
| aircraft | The Boeing Company | DC-10-30 | Airworthiness Directives; MCDONNELL DOUGLAS DC-10-10, DC-10-10F, DC-10-30, DC-10-30F, and DC-10-40 Airplanes |
| aircraft | The Boeing Company | DC-10-30F (KC-10A, KDC-10) | Airworthiness Directives; MCDONNELL DOUGLAS DC-10-10, DC-10-10F, DC-10-30, DC-10-30F, and DC-10-40 Airplanes |
| aircraft | The Boeing Company | DC-10-40 | Airworthiness Directives; MCDONNELL DOUGLAS DC-10-10, DC-10-10F, DC-10-30, DC-10-30F, and DC-10-40 Airplanes |
Unsafe Condition
In-flight depressurization could occur due to the opening of a lower cargo door.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Accomplish specified McDonnell Douglas Service Bulletins 52-98, 52-99, 52-102, 52-106, and 53-69 (where applicable), or equivalent FAA-approved revisions. These include modifying vent doors, replacing lock mechanism viewing windows, revising lower cargo door markings, updating electrical wiring for cargo door latch actuators, and adding view ports to wing-to-fuselage fillet panels on DC-10-30, -30F, and -40 models.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
on or before December 1, 1974
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
McDonnell Douglas DC-10-10, DC-10-10F, DC-10-30, DC-10-30F (KC-10A, KDC-10), and DC-10-40 airplanes certificated in all categories.
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Lower Cargo Door
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_74-12-07.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 74-12-07 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; MCDONNELL DOUGLAS DC-10-10, DC-10-10F, DC-10-30, DC-10-30F, and DC-10-40 Airplanes Subject: Lower Cargo Door Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 08/22/1974 Make: The Boeing Company Model: DC-10-10 | DC-10-10F | DC-10-30 | DC-10-30F (KC-10A, KDC-10) | DC-10-40 Product Type: Aircraft Product Subtype: Large Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: Updated RGL applicability to match AD applicability; CAR C-11-185 AIRWORTHINESS DIRECTIVES FINAL RULES: 74-12-07 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-1923 AD NUMBER: 74-12-07 SUBJECT HEADING: Airworthiness Directives; MCDONNELL DOUGLAS DC-10-10, DC-10-10F, DC-10-30, DC-10-30F, and DC-10-40 Airplanes ACTION: SUMMARY: DATES: Effective August 22, 1974. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 74-12-07 MCDONNELL DOUGLAS: Amendment 39-1861 as amended by Amendment 39-1923. Applies to Model DC-10-10, DC-10-10F, DC-10-30, DC-10-30F, and DC-10-40 airplanes certificated in all categories. Compliance required on or before December 1, 1974. To assure that in-flight depressurization will not occur as a result of the opening of a lower cargo door, accomplish the following McDonnell Douglas DC-10 Service Bulletins, in accordance with each service bulletin affectivity, or equivalents approved by the Chief, Aircraft Engineering Division, FAA Western Region. (a) Service Bulletin 52-98, "Doors - Cargo - Modify Vent Doors," dated May 13, 1974, or later FAA-approved revision. (b) Service Bulletin 52-99, "Doors - Cargo - Replace Lock Mechanism Viewing Window," Revision 1, dated April 19, 1974, or later FAA-approved revision. (c) Service Bulletin 52-102, "Doors - Cargo - Revise Lower Cargo Door Markings," Revision 1, dated April 12, 1974, or later FAA-approved revision. (d) Service Bulletin 52-106, "Doors - Cargo - Revise Electrical Wiring for Forward, Center, and Aft Cargo Doors Latch Actuators" dated April 25, 1974, or later FAA-approved revision. (e) Service Bulletin 53-69, "Fuselage-Aerodynamic Fairings - Add View Port to Wing - To - Fuselage Fillet Panel Assembly on Center Cargo Door," dated May 6, 1974, or later FAA-approved revision. Only applies to Model DC-10-30, -30F and -40 airplanes. The manufacturer's specifications and procedures identified and described in this directive are incorporated herewith and made a part hereof, pursuant to 5 U.S.C. 552(a)(i). All persons affected by this directive who have not already received these documents may obtain copies upon request to McDonnell Douglas Corporation, 3855 Lakewood Boulevard, Long Beach, California 90801. These documents may also be examined at FAA Western Region, 15000 Aviation Boulevard, Hawthorne, California. Amendment 39-1861 became effective July 6, 1974. This Amendment 39-1923 becomes effective August 22, 1974. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_74-12-07.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 74-12-07 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; MCDONNELL DOUGLAS DC-10-10, DC-10-10F, DC-10-30, DC-10-30F, and DC-10-40 Airplanes Subject: Lower Cargo Door Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 08/22/1974 Make: The Boeing Company Model: DC-10-10 | DC-10-10F | DC-10-30 | DC-10-30F (KC-10A, KDC-10) | DC-10-40 Product Type: Aircraft Product Subtype: Large Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: Updated RGL applicability to match AD applicability; CAR C-11-185 AIRWORTHINESS DIRECTIVES FINAL RULES: 74-12-07 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-1923 AD NUMBER: 74-12-07 SUBJECT HEADING: Airworthiness Directives; MCDONNELL DOUGLAS DC-10-10, DC-10-10F, DC-10-30, DC-10-30F, and DC-10-40 Airplanes ACTION: SUMMARY: DATES: Effective August 22, 1974. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 74-12-07 MCDONNELL DOUGLAS: Amendment 39-1861 as amended by Amendment 39-1923. Applies to Model DC-10-10, DC-10-10F, DC-10-30, DC-10-30F, and DC-10-40 airplanes certificated in all categories. Compliance required on or before December 1, 1974. To assure that in-flight depressurization will not occur as a result of the opening of a lower cargo door, accomplish the following McDonnell Douglas DC-10 Service Bulletins, in accordance with each service bulletin affectivity, or equivalents approved by the Chief, Aircraft Engineering Division, FAA Western Region. (a) Service Bulletin 52-98, "Doors - Cargo - Modify Vent Doors," dated May 13, 1974, or later FAA-approved revision. (b) Service Bulletin 52-99, "Doors - Cargo - Replace Lock Mechanism Viewing Window," Revision 1, dated April 19, 1974, or later FAA-approved revision. (c) Service Bulletin 52-102, "Doors - Cargo - Revise Lower Cargo Door Markings," Revision 1, dated April 12, 1974, or later FAA-approved revision. (d) Service Bulletin 52-106, "Doors - Cargo - Revise Electrical Wiring for Forward, Center, and Aft Cargo Doors Latch Actuators" dated April 25, 1974, or later FAA-approved revision. (e) Service Bulletin 53-69, "Fuselage-Aerodynamic Fairings - Add View Port to Wing - To - Fuselage Fillet Panel Assembly on Center Cargo Door," dated May 6, 1974, or later FAA-approved revision. Only applies to Model DC-10-30, -30F and -40 airplanes. The manufacturer's specifications and procedures identified and described in this directive are incorporated herewith and made a part hereof, pursuant to 5 U.S.C. 552(a)(i). All persons affected by this directive who have not already received these documents may obtain copies upon request to McDonnell Douglas Corporation, 3855 Lakewood Boulevard, Long Beach, California 90801. These documents may also be examined at FAA Western Region, 15000 Aviation Boulevard, Hawthorne, California. Amendment 39-1861 became effective July 6, 1974. This Amendment 39-1923 becomes effective August 22, 1974. FOOTER:
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
2025-23-53
final ruleAirworthiness Directives; The Boeing Company Airplanes
Unsafe Condition: The engine-pylon structure of the Model MD-11 and MD-11F airplanes is similar in design to that of the Model MD-10-10F, MD-10-30F, DC-10-10, DC-10-10F, DC-10-15, DC-10-30, DC-10-30F (KC-10A and KDC...
2023-12-15
final ruleAirworthiness Directives; The Boeing Company Airplanes
Unsafe Condition: 5G C-Band interference can cause radio altimeters to not perform their intended function, resulting in increased flightcrew workload while on approach with the flight director, autothrottle, or aut...
2023-10-02
final ruleAirworthiness Directives; Transport and Commuter Category Airplanes
Unsafe Condition: Radio altimeter anomalies that are undetected by the automation or pilot, particularly close to the ground (e.g., landing flare), could lead to loss of continued safe flight and landing. Additional...
2021-08-10 Recurring
final ruleAirworthiness Directives; The Boeing Company Airplanes
Unsafe Condition: possible cracking of the wing pylon at the aft bulkhead bracket, which could result in the inability of the pylon to sustain limit load and adversely affect the structural integrity of the airplane.
