AD 67-23-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 707-100 Long Body | BOEING Model 707 and 720 Series Airplanes |
| aircraft | The Boeing Company | 707-100B Long Body | BOEING Model 707 and 720 Series Airplanes |
| aircraft | The Boeing Company | 707-100B Short Body | BOEING Model 707 and 720 Series Airplanes |
| aircraft | The Boeing Company | 707-200 | BOEING Model 707 and 720 Series Airplanes |
| aircraft | The Boeing Company | 707-300 Series | BOEING Model 707 and 720 Series Airplanes |
| aircraft | The Boeing Company | 707-300B Series | BOEING Model 707 and 720 Series Airplanes |
| aircraft | The Boeing Company | 707-300C Series | BOEING Model 707 and 720 Series Airplanes |
| aircraft | The Boeing Company | 707-400 Series | BOEING Model 707 and 720 Series Airplanes |
| aircraft | The Boeing Company | 720 Series | BOEING Model 707 and 720 Series Airplanes |
| aircraft | The Boeing Company | 720B Series | BOEING Model 707 and 720 Series Airplanes |
Unsafe Condition
Explosion of fuel vapors in the fuel tanks as a result of lightning-induced ignition at the fuel tank vent outlet.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Install a flame and explosion suppression system in the fuel tank vent outlet system or install an auxiliary vent tube with flame arrester to the vent system surge tank, both approved by the Chief, Aircraft Engineering Division, FAA Western Region.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
within the next 7,000 hours' time in service after the effective date of this AD unless already accomplished
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Boeing Model 707 and 720 Series Airplanes, except 707-300B and -300C Series.
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Main Gear Downlock Rod
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_67-23-02.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 67-23-02 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: BOEING Model 707 and 720 Series Airplanes Subject: Main Gear Downlock Rod Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 09/10/1967 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: 67-23-02 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-462 AD NUMBER: 67-23-02 SUBJECT HEADING: BOEING Model 707 and 720 Series Airplanes ACTION: SUMMARY: DATES: Effective September 10, 1967. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 67-23-02 BOEING: Amdt. 39-462, Part 39, Federal Register August 11, 1967. Applies to Model 707 and 720 Series Airplanes, except 707-300B and -300C Series. Compliance required within the next 7,000 hours' time in service after the effective date of this AD unless already accomplished. To prevent explosion of fuel vapors in the fuel tanks as a result of lightning-induced ignition at the fuel tank vent outlet, accomplish one of the following, or an equivalent, approved by the Chief, Aircraft Engineering Division, FAA Western Region (a) Install a flame and explosion suppression system in the fuel tank vent outlet system to prevent flame propagation through the vent system following ignition of vapor by lightning at the vent outlet; or (b) Install an auxiliary vent tube with flame arrester, to the vent system surge tank to provide, during flight, continuous airflow inward through the existing outlet and outward through the protected auxiliary tube. This amendment effective September 10, 1967. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_67-23-02.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 67-23-02 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: BOEING Model 707 and 720 Series Airplanes Subject: Main Gear Downlock Rod Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 09/10/1967 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: 67-23-02 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-462 AD NUMBER: 67-23-02 SUBJECT HEADING: BOEING Model 707 and 720 Series Airplanes ACTION: SUMMARY: DATES: Effective September 10, 1967. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 67-23-02 BOEING: Amdt. 39-462, Part 39, Federal Register August 11, 1967. Applies to Model 707 and 720 Series Airplanes, except 707-300B and -300C Series. Compliance required within the next 7,000 hours' time in service after the effective date of this AD unless already accomplished. To prevent explosion of fuel vapors in the fuel tanks as a result of lightning-induced ignition at the fuel tank vent outlet, accomplish one of the following, or an equivalent, approved by the Chief, Aircraft Engineering Division, FAA Western Region (a) Install a flame and explosion suppression system in the fuel tank vent outlet system to prevent flame propagation through the vent system following ignition of vapor by lightning at the vent outlet; or (b) Install an auxiliary vent tube with flame arrester, to the vent system surge tank to provide, during flight, continuous airflow inward through the existing outlet and outward through the protected auxiliary tube. This amendment effective September 10, 1967. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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