AD 78-07-09
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 747-100 Series | BOEING Model 747 Series Airplanes |
| aircraft | The Boeing Company | 747-100B Series | BOEING Model 747 Series Airplanes |
| aircraft | The Boeing Company | 747-100B SUD Series | BOEING Model 747 Series Airplanes |
| aircraft | The Boeing Company | 747-200B Series | BOEING Model 747 Series Airplanes |
| aircraft | The Boeing Company | 747-200C Series | BOEING Model 747 Series Airplanes |
| aircraft | The Boeing Company | 747-200F Series | BOEING Model 747 Series Airplanes |
| aircraft | The Boeing Company | 747-300 Series | BOEING Model 747 Series Airplanes |
| aircraft | The Boeing Company | 747-400 Series | BOEING Model 747 Series Airplanes |
| aircraft | The Boeing Company | 747-400D Series | BOEING Model 747 Series Airplanes |
| aircraft | The Boeing Company | 747-400F Series | BOEING Model 747 Series Airplanes |
| aircraft | The Boeing Company | 747SP Series | BOEING Model 747 Series Airplanes |
| aircraft | The Boeing Company | 747SR Series | BOEING Model 747 Series Airplanes |
Unsafe Condition
Failure of the depressurization vent modification due to improper cargo compartment lining installation, leading to potential improper operation of the depressurization vent system.
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Required Actions
Inspect and rework the cargo compartment lining in accordance with Boeing Service Bulletin 747-25-2418 or later FAA approved revision. Compliance must be completed on or before June 30, 1978.
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Compliance Time
on or before June 30, 1978
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Affected Aircraft
Boeing Model 747 series airplanes listed in Boeing Service Bulletin 747-25-2306, including 747-100, 747-100B, 747-100B SUD, 747-200B, 747-200C, and other 747-200 series models.
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Depressurization Vent
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_78-07-09.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 78-07-09 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: BOEING Model 747 Series Airplanes Subject: Depressurization Vent Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 05/10/1978 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: 78-07-09 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-3177 AD NUMBER: 78-07-09 SUBJECT HEADING: BOEING Model 747 Series Airplanes ACTION: SUMMARY: DATES: Effective May 10, 1978. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 78-07-09 BOEING: Amendment 39-3177. Applies to Model 747 series airplanes listed in Boeing Service Bulletin 747-25-2306 certificated in all categories. Compliance required as indicated. To assure proper operation of the depressurization vent modification required by AD 75-15-05, on or before June 30, 1978, unless already accomplished, inspect and rework the cargo compartment lining in accordance with Boeing Service Bulletin 747-25-2418, dated December 27, 1977, or later FAA approved revision, or in a manner approved by the Chief, Engineering and Manufacturing Branch, FAA Northwest Region. The manufacturer's specifications and procedures identified and described in this directive are incorporated herein and made a part hereof pursuant to 5 U.S.C. 552(a)(1). All persons affected by this directive who have not already received these documents from the manufacturer, may obtain copies upon request to Boeing Commercial Airplane Company, P.O. Box 3707, Seattle, Washington 98124. These documents may also be examined at FAA Northwest Region, 9010 East Marginal Way South, Seattle, Washington 98108. This amendment becomes effective May 10, 1978. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_78-07-09.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 78-07-09 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: BOEING Model 747 Series Airplanes Subject: Depressurization Vent Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 05/10/1978 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: 78-07-09 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-3177 AD NUMBER: 78-07-09 SUBJECT HEADING: BOEING Model 747 Series Airplanes ACTION: SUMMARY: DATES: Effective May 10, 1978. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 78-07-09 BOEING: Amendment 39-3177. Applies to Model 747 series airplanes listed in Boeing Service Bulletin 747-25-2306 certificated in all categories. Compliance required as indicated. To assure proper operation of the depressurization vent modification required by AD 75-15-05, on or before June 30, 1978, unless already accomplished, inspect and rework the cargo compartment lining in accordance with Boeing Service Bulletin 747-25-2418, dated December 27, 1977, or later FAA approved revision, or in a manner approved by the Chief, Engineering and Manufacturing Branch, FAA Northwest Region. The manufacturer's specifications and procedures identified and described in this directive are incorporated herein and made a part hereof pursuant to 5 U.S.C. 552(a)(1). All persons affected by this directive who have not already received these documents from the manufacturer, may obtain copies upon request to Boeing Commercial Airplane Company, P.O. Box 3707, Seattle, Washington 98124. These documents may also be examined at FAA Northwest Region, 9010 East Marginal Way South, Seattle, Washington 98108. This amendment becomes effective May 10, 1978. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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