AD 61-13-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Alexander Schleicher GmbH & Co. | K7 | Airworthiness Directives; Schleicher Model K7 Gliders |
Unsafe Condition
Buckling of fuselage steel tube members on each side at the rear of the fuselage due to insufficient wall thickness.
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Required Actions
Replace five steel tube diagonal members on each side at the rear of the fuselage with tubes of greater wall thickness as follows: Right side third member with 12 MMS (15/32") outside diameter, 1 MM (.040") wall thickness; right and left side fourth and sixth members with 14 MMS (9/16") outside diameter, 1 MM (.040") wall thickness, using Civil Aeronautics Manual 18 repair procedures or manufacturer's recommendations.
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Compliance Time
prior to next flight unless already accomplished
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Affected Aircraft
Alexander Schleicher GmbH & Co. Model K7 Gliders with serial numbers up to and including 935 and serial number 984.
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Federal Register Abstract
Fuselage Modification
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_61-13-03.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 61-13-03 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Schleicher Model K7 Gliders Subject: Fuselage Modification Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 06/24/1961 Make: Alexander Schleicher GmbH & Co. Model: K7 Product Type: Aircraft Product Subtype: Glider Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 61-13-03 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 61-13-03 SUBJECT HEADING: Airworthiness Directives; Schleicher Model K7 Gliders ACTION: SUMMARY: DATES: Effective June 24, 1961. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 61-13-03 SCHLEICHER: Amdt. 299 Part 507 Federal Register June 24, 1961. Applies to Model K7 Gliders With Serial Numbers Up To and Including 935 and Serial Number 984. Compliance required prior to next flight unless already accomplished. To preclude the buckling of fuselage steel tube members on each side at the rear of the fuselage, replacement of five tubes with tubes having greater wall thickness is required. Replace the existing steel tube diagonal members, counting forward from the tail post as follows, using Civil Aeronautics Manual 18 repair procedures or manufacturer's recommendation. (a) Right side only, third member: Replace with 12 MMS. (15/32"), outside diameter, 1MM. (.040") wall thickness tubes. (b) Right and left side, fourth and sixth members: Replace with 14 MMS. (9/16") outside diameter, 1 MM. (.040") wall thickness tubes. (Schleicher Drawing No. L-211.10-A4 dated March 15, 1961, covers this subject.) This directive effective June 24, 1961. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_61-13-03.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 61-13-03 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Schleicher Model K7 Gliders Subject: Fuselage Modification Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 06/24/1961 Make: Alexander Schleicher GmbH & Co. Model: K7 Product Type: Aircraft Product Subtype: Glider Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 61-13-03 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 61-13-03 SUBJECT HEADING: Airworthiness Directives; Schleicher Model K7 Gliders ACTION: SUMMARY: DATES: Effective June 24, 1961. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 61-13-03 SCHLEICHER: Amdt. 299 Part 507 Federal Register June 24, 1961. Applies to Model K7 Gliders With Serial Numbers Up To and Including 935 and Serial Number 984. Compliance required prior to next flight unless already accomplished. To preclude the buckling of fuselage steel tube members on each side at the rear of the fuselage, replacement of five tubes with tubes having greater wall thickness is required. Replace the existing steel tube diagonal members, counting forward from the tail post as follows, using Civil Aeronautics Manual 18 repair procedures or manufacturer's recommendation. (a) Right side only, third member: Replace with 12 MMS. (15/32"), outside diameter, 1MM. (.040") wall thickness tubes. (b) Right and left side, fourth and sixth members: Replace with 14 MMS. (9/16") outside diameter, 1 MM. (.040") wall thickness tubes. (Schleicher Drawing No. L-211.10-A4 dated March 15, 1961, covers this subject.) This directive effective June 24, 1961. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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