AD 69-19-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Slingsby Aviation Ltd. | Type T.53.B. | Airworthiness Directives; Slingsby Model T.53B Gliders |
Unsafe Condition
Incorrect tailplane incidence during aero-towing could prevent proper glider trimming.
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Required Actions
Check tailplane incidence to ensure it is 1 degree 50' ±20'. Adjust incidence to specified measurement if incorrect, following Slingsby Technical Instruction No. 40 or FAA-approved equivalent.
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Compliance Time
within the next 10 hours' time in service after the effective date of this AD
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Affected Aircraft
Slingsby Aviation Ltd. Model T.53B Gliders
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Federal Register Abstract
Glider Trim
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_69-19-04.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 69-19-04 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Slingsby Model T.53B Gliders Subject: Glider Trim Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 09/15/1969 Make: Slingsby Aviation Ltd. Model: Type T.53.B. Product Type: Aircraft Product Subtype: Glider Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 69-19-04 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-841 AD NUMBER: 69-19-04 SUBJECT HEADING: Airworthiness Directives; Slingsby Model T.53B Gliders ACTION: SUMMARY: DATES: Effective September 15, 1969. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 69-19-04 SLINGSBY: Amdt. 39-841. Applies to Model T.53B Gliders. To ensure that the glider can be trimmed when being aero-towed, within the next 10 hours' time in service after the effective date of this AD, unless already accomplished, check to determine that the tailplane incidence is 1 degree 50' + 20'. If it is incorrect change the incidence of the tailplane to 1 degree 50' + 20' measured from the aircraft datum in accordance with Slingsby Aircraft Company Ltd., Technical Instruction No. 40, dated July 1969 or later ARB issue or an FAA approved equivalent. This amendment becomes effective September 15, 1969. FOOTER:
Document Text
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AD Final Rules - DRS_69-19-04.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 69-19-04 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Slingsby Model T.53B Gliders Subject: Glider Trim Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 09/15/1969 Make: Slingsby Aviation Ltd. Model: Type T.53.B. 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: 69-19-04 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-841 AD NUMBER: 69-19-04 SUBJECT HEADING: Airworthiness Directives; Slingsby Model T.53B Gliders ACTION: SUMMARY: DATES: Effective September 15, 1969. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 69-19-04 SLINGSBY: Amdt. 39-841. Applies to Model T.53B Gliders. To ensure that the glider can be trimmed when being aero-towed, within the next 10 hours' time in service after the effective date of this AD, unless already accomplished, check to determine that the tailplane incidence is 1 degree 50' + 20'. If it is incorrect change the incidence of the tailplane to 1 degree 50' + 20' measured from the aircraft datum in accordance with Slingsby Aircraft Company Ltd., Technical Instruction No. 40, dated July 1969 or later ARB issue or an FAA approved equivalent. This amendment becomes effective September 15, 1969. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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Related Airworthiness Directives
85-12-10
final ruleAirworthiness Directives; SLINGSBY SAILPLANES Model T.53.B Gliders
Unsafe Condition: Structural failure due to fatigue cracks in the welded frame P/N T53B-1079 and aft brackets (P/N T53B-10-168, Issue 1-4 or 5) and metal lugs/channel section on fuselage frame No. 6.
69-11-07
final ruleAirworthiness Directives; Slingsby Model T.53.B Gliders
Unsafe Condition: The fuselage center section structure may fail due to fatigue cracking.
69-03-04
final ruleAirworthiness Directives; Slingsby Model T.53B Gliders
Unsafe Condition: Interference between the elevator control lever and its support bracket P/N 53B-10-81
