AD 71-25-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 707-100 Long Body | BOEING Model 707/720 Airplanes |
| aircraft | The Boeing Company | 707-100B Long Body | BOEING Model 707/720 Airplanes |
| aircraft | The Boeing Company | 707-100B Short Body | BOEING Model 707/720 Airplanes |
| aircraft | The Boeing Company | 707-200 | BOEING Model 707/720 Airplanes |
| aircraft | The Boeing Company | 707-300 Series | BOEING Model 707/720 Airplanes |
| aircraft | The Boeing Company | 707-300B Series | BOEING Model 707/720 Airplanes |
| aircraft | The Boeing Company | 707-300C Series | BOEING Model 707/720 Airplanes |
| aircraft | The Boeing Company | 707-400 Series | BOEING Model 707/720 Airplanes |
| aircraft | The Boeing Company | 720 Series | BOEING Model 707/720 Airplanes |
| aircraft | The Boeing Company | 720B Series | BOEING Model 707/720 Airplanes |
Unsafe Condition
Water accumulation forward of the station 360 bulkhead could block or be absent drains, leading to potential structural damage.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the airplane per Boeing Service Bulletin 3027 or later FAA-approved revisions. If drains are blocked or absent, modify the station 360 bulkhead, bulkhead blanket, and floor mat as described. Alternatively, perform an equivalent inspection and modification approved by the FAA.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
within the next 300 hours time in service after effective date of this AD
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Affected Aircraft
Boeing Model 707/720 airplanes certified in all categories
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Water At Station 360 Bulkhead
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_71-25-06.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 71-25-06 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: BOEING Model 707/720 Airplanes Subject: Water At Station 360 Bulkhead Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 12/13/1971 Make: The Boeing Company Model: 707-100 Long Body | 707-100B Long Body | 707-100B Short Body | 707-200 | 707-300 Series | 707-300B S...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: 71-25-06 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-1357 AD NUMBER: 71-25-06 SUBJECT HEADING: BOEING Model 707/720 Airplanes ACTION: SUMMARY: DATES: Effective December 13, 1971. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 71-25-06 BOEING: Amdt. 39-1357. Applies to Model 707/720 airplanes certified in all categories. Compliance required within the next 300 hours time in service after effective date of this AD, unless already accomplished. To assure that water will not accumulate forward of the station 360 bulkhead on all Boeing Model 707/720 airplanes, accomplish one of the following: (1) Inspect the airplane per Boeing Service Bulletin 3027, dated 23 November 1971, or later FAA approved revisions. If the station 360 bulkhead drains are blocked or do not exist modify the station 360 bulkhead, bulkhead blanket and floor mat as described in the above service bulletin to provide the required drains. (2) Perform an equivalent inspection and (if required as a result of the inspection finding) modification approved by the Chief, Aircraft Engineering Division, FAA, Western Region. This amendment becomes effective December 13, 1971. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_71-25-06.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 71-25-06 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: BOEING Model 707/720 Airplanes Subject: Water At Station 360 Bulkhead Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 12/13/1971 Make: The Boeing Company Model: 707-100 Long Body | 707-100B Long Body | 707-100B Short Body | 707-200 | 707-300 Series | 707-300B S...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: 71-25-06 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-1357 AD NUMBER: 71-25-06 SUBJECT HEADING: BOEING Model 707/720 Airplanes ACTION: SUMMARY: DATES: Effective December 13, 1971. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 71-25-06 BOEING: Amdt. 39-1357. Applies to Model 707/720 airplanes certified in all categories. Compliance required within the next 300 hours time in service after effective date of this AD, unless already accomplished. To assure that water will not accumulate forward of the station 360 bulkhead on all Boeing Model 707/720 airplanes, accomplish one of the following: (1) Inspect the airplane per Boeing Service Bulletin 3027, dated 23 November 1971, or later FAA approved revisions. If the station 360 bulkhead drains are blocked or do not exist modify the station 360 bulkhead, bulkhead blanket and floor mat as described in the above service bulletin to provide the required drains. (2) Perform an equivalent inspection and (if required as a result of the inspection finding) modification approved by the Chief, Aircraft Engineering Division, FAA, Western Region. This amendment becomes effective December 13, 1971. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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