AD 84-07-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Mitsubishi Heavy Industries, Ltd. | YS-11 | Airworthiness Directives; NAMC (NIHON AIRPLANE MANUFACTURING COMPANY): Model YS-11/-11A Series Airplanes |
| aircraft | Mitsubishi Heavy Industries, Ltd. | YS-11A-200 | Airworthiness Directives; NAMC (NIHON AIRPLANE MANUFACTURING COMPANY): Model YS-11/-11A Series Airplanes |
| aircraft | Mitsubishi Heavy Industries, Ltd. | YS-11A-300 | Airworthiness Directives; NAMC (NIHON AIRPLANE MANUFACTURING COMPANY): Model YS-11/-11A Series Airplanes |
| aircraft | Mitsubishi Heavy Industries, Ltd. | YS-11A-500 | Airworthiness Directives; NAMC (NIHON AIRPLANE MANUFACTURING COMPANY): Model YS-11/-11A Series Airplanes |
| aircraft | Mitsubishi Heavy Industries, Ltd. | YS-11A-600 | Airworthiness Directives; NAMC (NIHON AIRPLANE MANUFACTURING COMPANY): Model YS-11/-11A Series Airplanes |
Unsafe Condition
Inadvertent opening of the main deck cargo door during flight.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Modify the main cargo door handle lock mechanism in accordance with NAMC YS-11 Service Bulletin 52-92, Revision 1. Alternate means of compliance may be used if approved by the FAA.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 450 flight hours time in service or 90 days after the effective date of this AD, whichever occurs first.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Mitsubishi Heavy Industries, Ltd. Models YS-11, YS-11A-200, YS-11A-300, YS-11A-500, YS-11A-600, fitted with a main deck cargo door certificated in all categories.
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Cargo Door Lock Mechanism
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_84-07-02.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 84-07-02 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; NAMC (NIHON AIRPLANE MANUFACTURING COMPANY): Model YS-11/-11A Series Airplanes Subject: Cargo Door Lock Mechanism Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 04/09/1984 Make: Mitsubishi Heavy Industries, Ltd. Model: YS-11 | YS-11A-200 | YS-11A-300 | YS-11A-500 | YS-11A-600 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: AIRWORTHINESS DIRECTIVES FINAL RULES: 84-07-02 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-4836 AD NUMBER: 84-07-02 SUBJECT HEADING: Airworthiness Directives; NAMC (NIHON AIRPLANE MANUFACTURING COMPANY): Model YS-11/-11A Series Airplanes ACTION: SUMMARY: DATES: Effective April 9, 1984. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 84-07-02 NAMC (NIHON AIRPLANE MANUFACTURING COMPANY): Amendment 39-4836. Applies to all Model NAMC YS-11/-11A series airplanes fitted with a main deck cargo door certificated in all categories. To prevent inadvertent opening of the main deck cargo door during flight, accomplish the following, unless already accomplished: A. Within 450 flight hours time in service or 90 days after the effective date of this AD, whichever occurs first, modify the main cargo door handle lock mechanism in accordance with NAMC YS-11 Service Bulletin 52-92, Revision 1, dated September 29, 1983. B. Alternate means of compliance which provide an equivalent level of safety may be used when approved by the Manager, Seattle Aircraft Certification Office, FAA, Northwest Mountain Region. C. Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate airplanes to a base for the accomplishment of inspections and/or modifications required by this AD. This amendment becomes effective April 9, 1984. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_84-07-02.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 84-07-02 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; NAMC (NIHON AIRPLANE MANUFACTURING COMPANY): Model YS-11/-11A Series Airplanes Subject: Cargo Door Lock Mechanism Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 04/09/1984 Make: Mitsubishi Heavy Industries, Ltd. Model: YS-11 | YS-11A-200 | YS-11A-300 | YS-11A-500 | YS-11A-600 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: AIRWORTHINESS DIRECTIVES FINAL RULES: 84-07-02 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-4836 AD NUMBER: 84-07-02 SUBJECT HEADING: Airworthiness Directives; NAMC (NIHON AIRPLANE MANUFACTURING COMPANY): Model YS-11/-11A Series Airplanes ACTION: SUMMARY: DATES: Effective April 9, 1984. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 84-07-02 NAMC (NIHON AIRPLANE MANUFACTURING COMPANY): Amendment 39-4836. Applies to all Model NAMC YS-11/-11A series airplanes fitted with a main deck cargo door certificated in all categories. To prevent inadvertent opening of the main deck cargo door during flight, accomplish the following, unless already accomplished: A. Within 450 flight hours time in service or 90 days after the effective date of this AD, whichever occurs first, modify the main cargo door handle lock mechanism in accordance with NAMC YS-11 Service Bulletin 52-92, Revision 1, dated September 29, 1983. B. Alternate means of compliance which provide an equivalent level of safety may be used when approved by the Manager, Seattle Aircraft Certification Office, FAA, Northwest Mountain Region. C. Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate airplanes to a base for the accomplishment of inspections and/or modifications required by this AD. This amendment becomes effective April 9, 1984. 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
2011-12-01
final ruleAirworthiness Directives; Koito Industries, Ltd., Seats and Seating Systems Approved Under Technical Standard Order (TSO) TSO-C39b, TSO-C39c, or TSO-C127a
Unsafe Condition: Seats and seating systems may not meet certain flammability, static strength, and dynamic strength criteria. Failure to meet static and dynamic strength criteria could result in injuries during eme...
2005-22-11 Recurring
final ruleAirworthiness Directives; Mitsubishi Model YS-11 Airplanes, and Model YS-11A-200, YS-11A-300, YS-11A-500, and YS-11A-600 Series Airplanes
Unsafe Condition: Fatigue cracking of the propeller hub, which could cause the loss of the propeller.
99-19-06
final ruleAirworthiness Directives; Mitsubishi Model YS-11 and YS-11A Series Airplanes
Unsafe Condition: Failure to activate airframe pneumatic deicing boots at the first signs of ice accumulation leading to reduced controllability due to adverse aerodynamic effects of ice adhering to the airplane pri...
99-10-16
final ruleAirworthiness Directives; Mitsubishi Model YS-11 Series Airplanes
Unsafe Condition: Fatigue cracking in the manhole doublers of the lower wing panels could result in failure of the wing structure.