AD 63-08-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Lockheed Martin Corporation | 188A | LOCKHEED Model 188 Series Aircraft |
| aircraft | Lockheed Martin Corporation | 188C | LOCKHEED Model 188 Series Aircraft |
Unsafe Condition
Fouling of the deboost control systems due to sharp edges and projections in the area of the 'off' branch cables.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Install deflectors on the rudder and elevator spring cartridges, chamfer corners of the aileron and elevator spring cartridges to eliminate sharp edges, and invert the screw and nut attaching the left-hand fuel dump chute locking cable conduit tube for aircraft with Service Bulletin 88/SB-547.
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Compliance Time
within 650 hours' time in service after the effective date of this AD
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Affected Aircraft
Lockheed Model 188A and 188C aircraft, all serial numbers, incorporating the deboost control system and/or Service Bulletin 88/SB-547.
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Deboost Control System
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_63-08-03.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 63-08-03 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: LOCKHEED Model 188 Series Aircraft Subject: Deboost Control System Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 05/09/1963 Make: Lockheed Martin Corporation Model: 188A | 188C Product Type: Aircraft Product Subtype: Large Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 63-08-03 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 63-08-03 SUBJECT HEADING: LOCKHEED Model 188 Series Aircraft ACTION: SUMMARY: DATES: Effective May 9, 1963. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 63-08-03 LOCKHEED: Amdt. 553 Part 507 Federal Register April 9, 1963. Applies to All Model 188 Series Aircraft. Compliance required as indicated. To eliminate the possibility of fouling the deboost control systems, accomplish the following within 650 hours' time in service after the effective date of this AD, unless previously accomplished. (a) Modify all aircraft by installing deflectors on the rudder and elevator spring cartridges and by chamfering corners of the aileron and elevator spring cartridges to eliminate sharp edges and projections in the area of the "off" branch cables in accordance with Lockheed Service Information Letter 881 SIL-30, dated December 29, 1961, or FAA approved equivalent. (b) Modify those aircraft which incorporate the provisions of Service Bulletin 88/SB- 547, dated August 4, 1961, by inverting the screw and nut that attach the left-hand fuel dump chute locking cable conduit tube to the floor support below the pilot's lower center console control box, in accordance with the -1 PS of Lockheed Drawing 840850. (Lockheed Service Information Letter 88/SIL-30, dated December 29, 1961, and revision to Lockheed Service Bulletin 547, dated March 28, 1962, cover this same subject.) This directive effective May 9, 1963. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_63-08-03.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 63-08-03 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: LOCKHEED Model 188 Series Aircraft Subject: Deboost Control System Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 05/09/1963 Make: Lockheed Martin Corporation Model: 188A | 188C 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: 63-08-03 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 63-08-03 SUBJECT HEADING: LOCKHEED Model 188 Series Aircraft ACTION: SUMMARY: DATES: Effective May 9, 1963. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 63-08-03 LOCKHEED: Amdt. 553 Part 507 Federal Register April 9, 1963. Applies to All Model 188 Series Aircraft. Compliance required as indicated. To eliminate the possibility of fouling the deboost control systems, accomplish the following within 650 hours' time in service after the effective date of this AD, unless previously accomplished. (a) Modify all aircraft by installing deflectors on the rudder and elevator spring cartridges and by chamfering corners of the aileron and elevator spring cartridges to eliminate sharp edges and projections in the area of the "off" branch cables in accordance with Lockheed Service Information Letter 881 SIL-30, dated December 29, 1961, or FAA approved equivalent. (b) Modify those aircraft which incorporate the provisions of Service Bulletin 88/SB- 547, dated August 4, 1961, by inverting the screw and nut that attach the left-hand fuel dump chute locking cable conduit tube to the floor support below the pilot's lower center console control box, in accordance with the -1 PS of Lockheed Drawing 840850. (Lockheed Service Information Letter 88/SIL-30, dated December 29, 1961, and revision to Lockheed Service Bulletin 547, dated March 28, 1962, cover this same subject.) This directive effective May 9, 1963. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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