AD 68-08-07
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Lockheed Martin Corporation | 1329-23A | LOCKHEED Model 1329 Airplanes |
| aircraft | Lockheed Martin Corporation | 1329-23D | LOCKHEED Model 1329 Airplanes |
| aircraft | Lockheed Martin Corporation | 1329-23E | LOCKHEED Model 1329 Airplanes |
Unsafe Condition
Differences in the airspeed and altimeter system static position error exceeding normal tolerances from the values in the AFM have been revealed by recent calibrations.
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Required Actions
Calibrate the pitot static system in accordance with Lockheed-Georgia Service Bulletin 329-250, Section 2a through 2p, or later FAA approved revision; or in an equivalent manner approved by the Chief, Engineering and Manufacturing Branch, FAA Southern Region.
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Compliance Time
Within the next 100 hours' time in service after the effective date of this AD
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Affected Aircraft
Lockheed Martin Corporation Model 1329 Airplanes, Serial Numbers 5001 through 5092, 5094 through 5096
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Federal Register Abstract
Airspeed and Altimeter Systems
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_68-08-07.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 68-08-07 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: LOCKHEED Model 1329 Airplanes Subject: Airspeed and Altimeter Systems Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 04/19/1968 Make: Lockheed Martin Corporation Model: 1329-23A | 1329-23D | 1329-23E Product Type: Aircraft Product Subtype: Large Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: Updated RGL applicability to match AD applicability; CAR C-11-185 AIRWORTHINESS DIRECTIVES FINAL RULES: 68-08-07 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-585 AD NUMBER: 68-08-07 SUBJECT HEADING: LOCKHEED Model 1329 Airplanes ACTION: SUMMARY: DATES: Effective April 19, 1968. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 68-08-07 LOCKHEED: Amendment 39-585. Applies to Model 1329 Airplanes, Serial Numbers 5001 through 5092, 5094 through 5096. Compliance required as indicated. Recent calibration of several airplanes has revealed a difference in the airspeed and altimeter system static position error from the values presented in the AFM. These differences are in excess of tolerances which can be accepted as normal deviation from an Airplane Flight Manual calibration curve. To detect similar discrepancies, the following is required unless the system has previously been calibrated in accordance with the referenced manufacturer's instructions. Within the next 100 hours' time in service after the effective date of this AD, calibrate the pitot static system in accordance with the instructions given in Lockheed-Georgia Service Bulletin 329-250, Section 2a through 2p, or later FAA approved revision; or in an equivalent manner approved by the Chief, Engineering and Manufacturing Branch, FAA Southern Region. This amendment becomes effective April 19, 1968. FOOTER:
Document Text
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AD Final Rules - DRS_68-08-07.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 68-08-07 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: LOCKHEED Model 1329 Airplanes Subject: Airspeed and Altimeter Systems Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 04/19/1968 Make: Lockheed Martin Corporation Model: 1329-23A | 1329-23D | 1329-23E 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: Updated RGL applicability to match AD applicability; CAR C-11-185 AIRWORTHINESS DIRECTIVES FINAL RULES: 68-08-07 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-585 AD NUMBER: 68-08-07 SUBJECT HEADING: LOCKHEED Model 1329 Airplanes ACTION: SUMMARY: DATES: Effective April 19, 1968. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 68-08-07 LOCKHEED: Amendment 39-585. Applies to Model 1329 Airplanes, Serial Numbers 5001 through 5092, 5094 through 5096. Compliance required as indicated. Recent calibration of several airplanes has revealed a difference in the airspeed and altimeter system static position error from the values presented in the AFM. These differences are in excess of tolerances which can be accepted as normal deviation from an Airplane Flight Manual calibration curve. To detect similar discrepancies, the following is required unless the system has previously been calibrated in accordance with the referenced manufacturer's instructions. Within the next 100 hours' time in service after the effective date of this AD, calibrate the pitot static system in accordance with the instructions given in Lockheed-Georgia Service Bulletin 329-250, Section 2a through 2p, or later FAA approved revision; or in an equivalent manner approved by the Chief, Engineering and Manufacturing Branch, FAA Southern Region. This amendment becomes effective April 19, 1968. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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