AD 93-20-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 747-100 Series | BOEING Model 747-100, -200, and -300 Series Airplanes |
| aircraft | The Boeing Company | 747-100B Series | BOEING Model 747-100, -200, and -300 Series Airplanes |
| aircraft | The Boeing Company | 747-100B SUD Series | BOEING Model 747-100, -200, and -300 Series Airplanes |
| aircraft | The Boeing Company | 747-200B Series | BOEING Model 747-100, -200, and -300 Series Airplanes |
| aircraft | The Boeing Company | 747-200C Series | BOEING Model 747-100, -200, and -300 Series Airplanes |
| aircraft | The Boeing Company | 747-200F Series | BOEING Model 747-100, -200, and -300 Series Airplanes |
| aircraft | The Boeing Company | 747-300 Series | BOEING Model 747-100, -200, and -300 Series Airplanes |
Unsafe Condition
Delayed inflation of evacuation slide/rafts, which could delay or impede the evacuation of passengers during an emergency.
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Required Actions
Modify BFGoodrich evacuation slide/rafts with regulator part numbers 4A3194-1, -2, or -3 installed on doors 1, 2, 4, and 5 in accordance with BFGoodrich Service Bulletin 4A3221-25-250 dated March 12, 1993. Alternative methods of compliance or adjustments may be approved by the FAA's Los Angeles ACO.
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Compliance Time
Within 36 months after the effective date of this AD (November 26, 1993).
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Affected Aircraft
Boeing Model 747-100, -200, and -300 series airplanes equipped with BFGoodrich evacuation slide/rafts listed in Service Bulletin 4A3221-25-250, with regulator part numbers 4A3194-1, -2, or -3.
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Evacuation Slide/Rafts
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_93-20-04.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 93-20-04 Document Type: AD Final Rules Docket Number: 93-NM-38-AD Subject Heading: BOEING Model 747-100, -200, and -300 Series Airplanes Subject: Evacuation Slide/Rafts Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 11/26/1993 Make: The Boeing Company Model: 747-100 Series | 747-100B Series | 747-100B SUD Series | 747-200B Series | 747-200C Series | 747-200...Show more 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: 93-20-04 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: 93-NM-38-AD AMENDMENT: 39-8712 AD NUMBER: 93-20-04 SUBJECT HEADING: BOEING Model 747-100, -200, and -300 Series Airplanes ACTION: SUMMARY: DATES: Effective November 26, 1993. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 93-20-04 BOEING: Amendment 39-8712. Docket 93-NM-38-AD. Applicability: Model 747-100, -200, and -300 series airplanes, equipped with BFGoodrich evacuation slide/rafts, as listed in BFGoodrich Service Bulletin 4A3221-25-250, dated March 12, 1993, having regulator part number 4A3194-1, -2, or -3; certificated in any category. Compliance: Required as indicated, unless accomplished previously. To prevent delayed inflation of evacuation slide/rafts, which could delay or impede the evacuation of passengers during an emergency, accomplish the following: (a) Within 36 months after the effective date of this AD, modify BFGoodrich evacuation slide/rafts having regulator part number 4A3194-1, -2, or -3, installed on doors 1, 2, 4, and 5, in accordance with BFGoodrich Service Bulletin 4A3221-25-250, dated March 12, 1993. (b) An alternative method of compliance or adjustment of the compliance time that provides an acceptable level of safety may be used if approved by the Manager, Los Angeles Aircraft Certification Office (ACO), FAA, Transport Airplane Directorate. Operators shall submit their requests through an appropriate FAA Principal Maintenance Inspector, who may add comments and then send it to the Manager, Los Angeles ACO. NOTE: Information concerning the existence of approved alternative methods of compliance with this AD, if any, may be obtained from the Los Angeles ACO. (c) Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate the airplane to a location where the requirements of this AD can be accomplished. (d) The modification shall be done in accordance with BFGoodrich Service Bulletin 4A3221-25-250, dated March 12, 1993. This incorporation by reference was approved by the Director of the Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR Part 51. Copies may be obtained from BFGoodrich, Aircraft Evacuation Systems, 3414 South 5th Street, Phoenix, Arizona 85040. Copies may be inspected at the FAA, Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton, Washington; or at the FAA, Transport Airplane Directorate, Los Angeles Aircraft Certification Office, 3229 East Spring Street, Long Beach, California; or at the Office of the Federal Register, 800 North Capitol Street, NW., suite 700, Washington, DC. (e) This amendment becomes effective on November 26, 1993 FOOTER:
Document Text
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AD Final Rules - DRS_93-20-04.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 93-20-04 Document Type: AD Final Rules Docket Number: 93-NM-38-AD Subject Heading: BOEING Model 747-100, -200, and -300 Series Airplanes Subject: Evacuation Slide/Rafts Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 11/26/1993 Make: The Boeing Company Model: 747-100 Series | 747-100B Series | 747-100B SUD Series | 747-200B Series | 747-200C Series | 747-200...Show more 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: 93-20-04 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: 93-NM-38-AD AMENDMENT: 39-8712 AD NUMBER: 93-20-04 SUBJECT HEADING: BOEING Model 747-100, -200, and -300 Series Airplanes ACTION: SUMMARY: DATES: Effective November 26, 1993. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 93-20-04 BOEING: Amendment 39-8712. Docket 93-NM-38-AD. Applicability: Model 747-100, -200, and -300 series airplanes, equipped with BFGoodrich evacuation slide/rafts, as listed in BFGoodrich Service Bulletin 4A3221-25-250, dated March 12, 1993, having regulator part number 4A3194-1, -2, or -3; certificated in any category. Compliance: Required as indicated, unless accomplished previously. To prevent delayed inflation of evacuation slide/rafts, which could delay or impede the evacuation of passengers during an emergency, accomplish the following: (a) Within 36 months after the effective date of this AD, modify BFGoodrich evacuation slide/rafts having regulator part number 4A3194-1, -2, or -3, installed on doors 1, 2, 4, and 5, in accordance with BFGoodrich Service Bulletin 4A3221-25-250, dated March 12, 1993. (b) An alternative method of compliance or adjustment of the compliance time that provides an acceptable level of safety may be used if approved by the Manager, Los Angeles Aircraft Certification Office (ACO), FAA, Transport Airplane Directorate. Operators shall submit their requests through an appropriate FAA Principal Maintenance Inspector, who may add comments and then send it to the Manager, Los Angeles ACO. NOTE: Information concerning the existence of approved alternative methods of compliance with this AD, if any, may be obtained from the Los Angeles ACO. (c) Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate the airplane to a location where the requirements of this AD can be accomplished. (d) The modification shall be done in accordance with BFGoodrich Service Bulletin 4A3221-25-250, dated March 12, 1993. This incorporation by reference was approved by the Director of the Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR Part 51. Copies may be obtained from BFGoodrich, Aircraft Evacuation Systems, 3414 South 5th Street, Phoenix, Arizona 85040. Copies may be inspected at the FAA, Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton, Washington; or at the FAA, Transport Airplane Directorate, Los Angeles Aircraft Certification Office, 3229 East Spring Street, Long Beach, California; or at the Office of the Federal Register, 800 North Capitol Street, NW., suite 700, Washington, DC. (e) This amendment becomes effective on November 26, 1993 FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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