AD 77-22-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Lockheed Martin Corporation | 1329-23A | LOCKHEED Model 1329-23A, 1329-23D, 1329-23E, and 1329-25 Airplanes |
| aircraft | Lockheed Martin Corporation | 1329-23D | LOCKHEED Model 1329-23A, 1329-23D, 1329-23E, and 1329-25 Airplanes |
| aircraft | Lockheed Martin Corporation | 1329-23E | LOCKHEED Model 1329-23A, 1329-23D, 1329-23E, and 1329-25 Airplanes |
| aircraft | Lockheed Martin Corporation | 1329-25 | LOCKHEED Model 1329-23A, 1329-23D, 1329-23E, and 1329-25 Airplanes |
Unsafe Condition
Failure of the reinforcing doubler and ring segment for the lower VHF antenna.
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Required Actions
Inspect for cracks in the reinforcing doubler and ring segment within the next 25 hours flying time. If cracks are found, replace the components before further flight. For Model 1329-23A/D/E without cracks, replace components within 300 hours flying time. Model 1329-25 must replace components within 300 hours flying time.
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Compliance Time
within the next 25 hours flying time (inspection) and within the next 300 hours flying time (replacement for some models).
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Affected Aircraft
Lockheed Model 1329-23A (serials 5001-5092, 5094-5096, 5121), 1329-23D (same serials as 23A), 1329-23E (serials 5093, 5097-5120, 5122-5162), and 1329-25 (serials 5201-5221).
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Federal Register Abstract
Ring Segment - VHF Antenna
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_77-22-03.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 77-22-03 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: LOCKHEED Model 1329-23A, 1329-23D, 1329-23E, and 1329-25 Airplanes Subject: Ring Segment - VHF Antenna Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 10/28/1977 Make: Lockheed Martin Corporation Model: 1329-23A | 1329-23D | 1329-23E | 1329-25 Product Type: Aircraft Product Subtype: Large Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 77-22-03 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-3063 AD NUMBER: 77-22-03 SUBJECT HEADING: LOCKHEED Model 1329-23A, 1329-23D, 1329-23E, and 1329-25 Airplanes ACTION: SUMMARY: DATES: Effective October 28, 1977. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 77-22-03 LOCKHEED: Amendment 39-3063. Applies to all Model 1329-23A and Model 1329-23D airplanes, serial numbers 5001 through 5092, 5094 through 5096 and 5121; all Model 1329-23E airplanes, serial numbers 5093, 5097 through 5120 and 5122 through 5162; and all Model 1329-25 airplanes, serial numbers 5201 through 5221. Compliance is required as indicated, unless already accomplished. To prevent failure of the reinforcing doubler and ring segment for the lower VHF antenna, accomplish the following: On Model 1329-23A, Model 1329-23D and Model 1329-23E airplanes, within the next 25 hours flying time, inspect for cracks in the reinforcing doubler and ring segment for the lower VHF antenna in accordance with Service Bulletin 329-281 or later FAA approved revision. If cracks are found, before further flight, replace the reinforcing doubler and ring segment in accordance with Service Bulletin 329-281 or later FAA approved revision, or in an equivalent manner approved by the Chief, Engineering and Manufacturing Branch, Federal Aviation Administration, Southern Region. On Model 1329-23A, Model 1329-23D and Model 1329-23E airplanes on which cracks are not found, within the next 300 hours flying time, replace the reinforcing doubler and ring segment in accordance with Service Bulletin 329-281 or later FAA approved revision, or in an equivalent manner approved by the Chief, Engineering and Manufacturing Branch, Federal Aviation Administration, Southern Region. On Model 1329-25 airplanes, serial numbers 5201 through 5221, within the next 300 hours flying time, replace the reinforcing doubler and ring segment in accordance with Service Bulletin 329II-53-6 or later FAA approved revision, or in an equivalent manner approved by the Chief, Engineering and Manufacturing Branch, Federal Aviation Administration, Southern Region. This amendment becomes effective October 28, 1977. FOOTER:
Document Text
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AD Final Rules - DRS_77-22-03.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 77-22-03 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: LOCKHEED Model 1329-23A, 1329-23D, 1329-23E, and 1329-25 Airplanes Subject: Ring Segment - VHF Antenna Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 10/28/1977 Make: Lockheed Martin Corporation Model: 1329-23A | 1329-23D | 1329-23E | 1329-25 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: 77-22-03 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-3063 AD NUMBER: 77-22-03 SUBJECT HEADING: LOCKHEED Model 1329-23A, 1329-23D, 1329-23E, and 1329-25 Airplanes ACTION: SUMMARY: DATES: Effective October 28, 1977. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 77-22-03 LOCKHEED: Amendment 39-3063. Applies to all Model 1329-23A and Model 1329-23D airplanes, serial numbers 5001 through 5092, 5094 through 5096 and 5121; all Model 1329-23E airplanes, serial numbers 5093, 5097 through 5120 and 5122 through 5162; and all Model 1329-25 airplanes, serial numbers 5201 through 5221. Compliance is required as indicated, unless already accomplished. To prevent failure of the reinforcing doubler and ring segment for the lower VHF antenna, accomplish the following: On Model 1329-23A, Model 1329-23D and Model 1329-23E airplanes, within the next 25 hours flying time, inspect for cracks in the reinforcing doubler and ring segment for the lower VHF antenna in accordance with Service Bulletin 329-281 or later FAA approved revision. If cracks are found, before further flight, replace the reinforcing doubler and ring segment in accordance with Service Bulletin 329-281 or later FAA approved revision, or in an equivalent manner approved by the Chief, Engineering and Manufacturing Branch, Federal Aviation Administration, Southern Region. On Model 1329-23A, Model 1329-23D and Model 1329-23E airplanes on which cracks are not found, within the next 300 hours flying time, replace the reinforcing doubler and ring segment in accordance with Service Bulletin 329-281 or later FAA approved revision, or in an equivalent manner approved by the Chief, Engineering and Manufacturing Branch, Federal Aviation Administration, Southern Region. On Model 1329-25 airplanes, serial numbers 5201 through 5221, within the next 300 hours flying time, replace the reinforcing doubler and ring segment in accordance with Service Bulletin 329II-53-6 or later FAA approved revision, or in an equivalent manner approved by the Chief, Engineering and Manufacturing Branch, Federal Aviation Administration, Southern Region. This amendment becomes effective October 28, 1977. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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