AD 72-08-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 747-100 Series | BOEING Model 747 Airplanes |
| aircraft | The Boeing Company | 747-100B Series | BOEING Model 747 Airplanes |
| aircraft | The Boeing Company | 747-100B SUD Series | BOEING Model 747 Airplanes |
| aircraft | The Boeing Company | 747-200B Series | BOEING Model 747 Airplanes |
| aircraft | The Boeing Company | 747-200C Series | BOEING Model 747 Airplanes |
| aircraft | The Boeing Company | 747-200F Series | BOEING Model 747 Airplanes |
| aircraft | The Boeing Company | 747-300 Series | BOEING Model 747 Airplanes |
| aircraft | The Boeing Company | 747-400 Series | BOEING Model 747 Airplanes |
| aircraft | The Boeing Company | 747-400D Series | BOEING Model 747 Airplanes |
| aircraft | The Boeing Company | 747-400F Series | BOEING Model 747 Airplanes |
| aircraft | The Boeing Company | 747SP Series | BOEING Model 747 Airplanes |
| aircraft | The Boeing Company | 747SR Series | BOEING Model 747 Airplanes |
Unsafe Condition
Failed landing gear alternate extension actuators
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect landing gear alternate extension actuators in accordance with Boeing Service Bulletin 747-32-2118 or later FAA-approved revisions until modified per the same service bulletin or an equivalent inspection 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 100 hours' time in service after the effective date of this AD, unless already accomplished within the last 400 hours' time in service, and thereafter at intervals not to exceed 500 hours' time in service from the last inspection, until modified per Boeing Service Bulletin 747-32-2118
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Affected Aircraft
Boeing Model 747 airplanes listed in Boeing Service Bulletin 747-32-2118 dated December 20, 1971, or later FAA-approved revisions except the Model 747-131
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Landing Gear Alternate Extension Actuators
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_72-08-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 72-08-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: BOEING Model 747 Airplanes Subject: Landing Gear Alternate Extension Actuators Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 04/07/1972 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: 72-08-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-1428 AD NUMBER: 72-08-01 SUBJECT HEADING: BOEING Model 747 Airplanes ACTION: SUMMARY: DATES: Effective April 7, 1972. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 72-08-01 BOEING: Amdt. 39-1428. Applies to Boeing Model 747 airplanes, listed in Boeing Service Bulletin 747-32-2118, dated December 20, 1971, or later FAA-approved revisions except the Model 747-131. Compliance required within the next 100 hours' time in service after the effective date of this AD, unless already accomplished within the last 400 hours' time in service, and thereafter at intervals not to exceed 500 hours' time in service from the last inspection, until modified per Boeing Service Bulletin 747-32-2118, dated December 20, 1971, or later FAA-approved revisions. To detect failed landing gear alternate extension actuators, accomplish the following: Inspect landing gear alternate extension actuators in accordance with Boeing Service Bulletin 747-32-2118, dated December 20, 1971, or later FAA-approved revisions, until modified in accordance with Boeing Service Bulletin 747-32-2118, dated December 20, 1971, or later FAA-approved revision, or an equivalent inspection approved by the Chief, Aircraft Engineering Division, FAA Western Region. This amendment becomes effective April 7, 1972. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_72-08-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 72-08-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: BOEING Model 747 Airplanes Subject: Landing Gear Alternate Extension Actuators Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 04/07/1972 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: 72-08-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-1428 AD NUMBER: 72-08-01 SUBJECT HEADING: BOEING Model 747 Airplanes ACTION: SUMMARY: DATES: Effective April 7, 1972. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 72-08-01 BOEING: Amdt. 39-1428. Applies to Boeing Model 747 airplanes, listed in Boeing Service Bulletin 747-32-2118, dated December 20, 1971, or later FAA-approved revisions except the Model 747-131. Compliance required within the next 100 hours' time in service after the effective date of this AD, unless already accomplished within the last 400 hours' time in service, and thereafter at intervals not to exceed 500 hours' time in service from the last inspection, until modified per Boeing Service Bulletin 747-32-2118, dated December 20, 1971, or later FAA-approved revisions. To detect failed landing gear alternate extension actuators, accomplish the following: Inspect landing gear alternate extension actuators in accordance with Boeing Service Bulletin 747-32-2118, dated December 20, 1971, or later FAA-approved revisions, until modified in accordance with Boeing Service Bulletin 747-32-2118, dated December 20, 1971, or later FAA-approved revision, or an equivalent inspection approved by the Chief, Aircraft Engineering Division, FAA Western Region. This amendment becomes effective April 7, 1972. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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