AD 90-25-08
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 747-100 Series | BOEING Model 747 and 767 Series Airplanes |
| aircraft | The Boeing Company | 747-100B Series | BOEING Model 747 and 767 Series Airplanes |
| aircraft | The Boeing Company | 747-100B SUD Series | BOEING Model 747 and 767 Series Airplanes |
| aircraft | The Boeing Company | 747-200B Series | BOEING Model 747 and 767 Series Airplanes |
| aircraft | The Boeing Company | 747-200C Series | BOEING Model 747 and 767 Series Airplanes |
| aircraft | The Boeing Company | 747-200F Series | BOEING Model 747 and 767 Series Airplanes |
| aircraft | The Boeing Company | 747-300 Series | BOEING Model 747 and 767 Series Airplanes |
| aircraft | The Boeing Company | 747-400 Series | BOEING Model 747 and 767 Series Airplanes |
| aircraft | The Boeing Company | 747-400D Series | BOEING Model 747 and 767 Series Airplanes |
| aircraft | The Boeing Company | 747-400F Series | BOEING Model 747 and 767 Series Airplanes |
| aircraft | The Boeing Company | 747SP Series | BOEING Model 747 and 767 Series Airplanes |
| aircraft | The Boeing Company | 747SR Series | BOEING Model 747 and 767 Series Airplanes |
| aircraft | The Boeing Company | 767-200 Series | BOEING Model 747 and 767 Series Airplanes |
| aircraft | The Boeing Company | 767-300 Series | BOEING Model 747 and 767 Series Airplanes |
| aircraft | The Boeing Company | 767-300F Series | BOEING Model 747 and 767 Series Airplanes |
Unsafe Condition
A cargo compartment fire could migrate up behind the cargo liner in Class 'C' lower lobe cargo compartments without complete cargo compartment floors.
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Required Actions
Install a fire stop near the bottom of the sloping sidewall cargo compartment liner in accordance with an approved method. The fire stop material must meet FAR Part 25, Appendix F, Part III requirements. An alternate means of compliance or adjustment of compliance time may be approved by the FAA.
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Compliance Time
Within 30 months after the effective date of this AD, unless previously accomplished; except for airplanes subject to FAR 121.314, modifications shall not be accomplished prior to complying with FAR 121.314 requirements.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Boeing Model 747 and 767 series airplanes equipped with Class 'C' lower lobe cargo compartments that do not have complete cargo compartment floors.
AI-generated summary from the source AD text. Verify against the official source before acting.
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_90-25-08.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 90-25-08 Document Type: AD Final Rules Docket Number: 90-NM-107-AD Subject Heading: BOEING Model 747 and 767 Series Airplanes Subject: Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 01/02/1991 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: 90-25-08 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: 90-NM-107-AD AMENDMENT: 39-6816 AD NUMBER: 90-25-08 SUBJECT HEADING: BOEING Model 747 and 767 Series Airplanes ACTION: SUMMARY: DATES: Effective January 2, 1991. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 90-25-08 BOEING: Amendment 39-6816. Docket No. 90-NM-107-AD. Applicability: Model 747 and 767 series airplanes, equipped with Class "C" lower lobe cargo compartments that do not have complete cargo compartment floors, certificated in any category. Compliance: Required within 30 months after the effective date of this AD, unless previously accomplished; except that, for airplanes that are subject to the requirements of Federal Aviation Regulation (FAR) 121.314, the modifications required by this AD shall not be accomplished prior to the accomplishment of the modifications required by FAR 121.314. To prevent a cargo compartment fire from migrating up behind the cargo liner, accomplish the following: A. Install a fire stop near the bottom of the sloping sidewall cargo compartment liner, in accordance with a method approved by the Manager, Seattle Aircraft Certification Office, FAA, Transport Airplane Directorate. Fire stop material must meet the requirements of FAR Part 25, Appendix F, Part III. B. An alternate means of compliance or adjustment of the compliance time, which provides an acceptable level of safety, may be used when approved by the Manager, Seattle Aircraft Certification Office (ACO), FAA, Transport Airplane Directorate. NOTE: The request should be submitted directly to the Manager, Seattle ACO, and a copy sent to the cognizant FAA Principal Inspector (PI). The PI will then forward comments or concurrence to the Seattle ACO. C. Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate airplanes to a base in order to comply with the requirements of this AD. This amendment (39-6816, AD 90-25-08) becomes effective on January 2, 1991. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_90-25-08.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 90-25-08 Document Type: AD Final Rules Docket Number: 90-NM-107-AD Subject Heading: BOEING Model 747 and 767 Series Airplanes Subject: Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 01/02/1991 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: 90-25-08 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: 90-NM-107-AD AMENDMENT: 39-6816 AD NUMBER: 90-25-08 SUBJECT HEADING: BOEING Model 747 and 767 Series Airplanes ACTION: SUMMARY: DATES: Effective January 2, 1991. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 90-25-08 BOEING: Amendment 39-6816. Docket No. 90-NM-107-AD. Applicability: Model 747 and 767 series airplanes, equipped with Class "C" lower lobe cargo compartments that do not have complete cargo compartment floors, certificated in any category. Compliance: Required within 30 months after the effective date of this AD, unless previously accomplished; except that, for airplanes that are subject to the requirements of Federal Aviation Regulation (FAR) 121.314, the modifications required by this AD shall not be accomplished prior to the accomplishment of the modifications required by FAR 121.314. To prevent a cargo compartment fire from migrating up behind the cargo liner, accomplish the following: A. Install a fire stop near the bottom of the sloping sidewall cargo compartment liner, in accordance with a method approved by the Manager, Seattle Aircraft Certification Office, FAA, Transport Airplane Directorate. Fire stop material must meet the requirements of FAR Part 25, Appendix F, Part III. B. An alternate means of compliance or adjustment of the compliance time, which provides an acceptable level of safety, may be used when approved by the Manager, Seattle Aircraft Certification Office (ACO), FAA, Transport Airplane Directorate. NOTE: The request should be submitted directly to the Manager, Seattle ACO, and a copy sent to the cognizant FAA Principal Inspector (PI). The PI will then forward comments or concurrence to the Seattle ACO. C. Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate airplanes to a base in order to comply with the requirements of this AD. This amendment (39-6816, AD 90-25-08) becomes effective on January 2, 1991. FOOTER:
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Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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