AD 75-24-10

final rule

Airworthiness Directives; Hawker Siddeley Aviation Limited DH-114 Heron Airplanes

AD Number
75-24-10
Status
final_rule
Effective Date
Product Category
aircraft
Docket
Unknown
FR Citation
This information is not available.
Technical illustration of a riveted aircraft structural panel and frame
Problem area Airframe structure

Applicability

TypeManufacturerModelDetails
aircraft de Havilland Aircraft Co., Ltd., The D.H.114 Heron Series 2A Airworthiness Directives; Hawker Siddeley Aviation Limited DH-114 Heron Airplanes
aircraft de Havilland Aircraft Co., Ltd., The D.H.114 Heron Series 2DA Airworthiness Directives; Hawker Siddeley Aviation Limited DH-114 Heron Airplanes
aircraft de Havilland Aircraft Co., Ltd., The D.H.114 Heron Series 2X Airworthiness Directives; Hawker Siddeley Aviation Limited DH-114 Heron Airplanes

Unsafe Condition

Failure of the wing structure due to cracks in the inboard sections of the left and right wing main spar upper and lower flanges.

AI-generated summary from the source AD text. Verify against the official source before acting.

Required Actions

Inspect the inboard sections of the left and right wing main spar upper and lower flanges for cracks using X-ray technique per Hawker Siddeley T.N.S. No. W.6, Issue 3 (Appendix I, Issue 2 as amended June 16, 1975) or FAA-approved equivalent. If cracks are found, repair the joint per Appendix 2 of the same T.N.S. or FAA-approved method. Submit X-rays or inspection results to FAA as requested.

AI-generated summary from the source AD text. Verify against the official source before acting.

Compliance Time

within the next 50 hours' time in service after the effective date of this AD, unless already accomplished

AI-generated summary from the source AD text. Verify against the official source before acting.

Affected Aircraft

Hawker Siddeley Aviation Limited DH-114 Heron airplanes (D.H.114 Heron Series 2A, 2DA, 2X) with Serial Numbers up to and including 14093 and Serial Number 14098, not altered per Modification 843.

AI-generated summary from the source AD text. Verify against the official source before acting.

Federal Register Abstract

Wing Structure

Applicability Source Text

Show captured applicability text from the source AD
AD Final Rules - DRS_75-24-10.html
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AD Number:
75-24-10
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
Airworthiness Directives; Hawker Siddeley Aviation Limited DH-114 Heron Airplanes
Subject:
Wing Structure
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
12/01/1975
Make:
de Havilland Aircraft Co., Ltd., The
Model:
D.H.114 Heron Series 2A | D.H.114 Heron Series 2DA | D.H.114 Heron Series 2X
Product Type:
Aircraft
Product Subtype:
Small/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: 75-24-10
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:   39-2433

AD NUMBER:   75-24-10

SUBJECT HEADING:   Airworthiness Directives; Hawker Siddeley Aviation Limited DH-114 Heron Airplanes

ACTION:  

SUMMARY:  

DATES:   Effective December 1, 1975.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
75-24-10 HAWKER SIDDELEY AVIATION LIMITED: Amendment 39-2433. Applies to DH-114 "Heron" airplanes, Serial Numbers up to and including 14093 and Serial Number 14098, certificated in all categories, which have not been altered in accordance with Hawker Siddeley Modification 843.

Compliance is required within the next 50 hours' time in service after the effective date of this AD, unless already accomplished.

To prevent failure of the wing structure, accomplish the following:

(a) Inspect the inboard sections of the left and right wing main spar upper and lower flanges for cracks in accordance with the X-ray technique described in Appendix I, Issue 2, as amended June 16, 1975, of Hawker Siddeley Technical News Sheet (T.N.S.) No. W.6, Issue 3, dated March 17, 1975, or an FAA-approved equivalent inspection.

(b) If any cracks are detected in a spar joint as a result of the inspection required by paragraph (a) of this AD, before further flight, repair the joint in accordance with the appropriate part of Appendix 2 of Hawker Siddeley Technical News Sheet (T.N.S.) No. W. 6, Issue 3, dated March 17, 1975, or an FAA-approved equivalent.

(c) Upon compliance with paragraph (a) of this AD, it is requested that copies of the X-rays or of the results of the FAA-approved equivalent inspection be forwarded to DOT/FAA, Chief, Aircraft Certification Staff, Europe, Africa, and Middle East Region, c/o American Embassy, APO New York, N.Y. 09667.

(Reporting approved by the Bureau of the Budget under B.O.B. No. 04-RO174).

This amendment becomes effective December 1, 1975.

FOOTER:

Document Text

Show stored source text (verify against official source)
AD Final Rules - DRS_75-24-10.html
Copy URL
Print/Save as PDF
Document Versions
 Feedback
Details
AD Number:
75-24-10
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
Airworthiness Directives; Hawker Siddeley Aviation Limited DH-114 Heron Airplanes
Subject:
Wing Structure
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
12/01/1975
Make:
de Havilland Aircraft Co., Ltd., The
Model:
D.H.114 Heron Series 2A | D.H.114 Heron Series 2DA | D.H.114 Heron Series 2X
Product Type:
Aircraft
Product Subtype:
Small/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: 75-24-10
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:   39-2433

AD NUMBER:   75-24-10

SUBJECT HEADING:   Airworthiness Directives; Hawker Siddeley Aviation Limited DH-114 Heron Airplanes

ACTION:  

SUMMARY:  

DATES:   Effective December 1, 1975.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
75-24-10 HAWKER SIDDELEY AVIATION LIMITED: Amendment 39-2433. Applies to DH-114 "Heron" airplanes, Serial Numbers up to and including 14093 and Serial Number 14098, certificated in all categories, which have not been altered in accordance with Hawker Siddeley Modification 843.

Compliance is required within the next 50 hours' time in service after the effective date of this AD, unless already accomplished.

To prevent failure of the wing structure, accomplish the following:

(a) Inspect the inboard sections of the left and right wing main spar upper and lower flanges for cracks in accordance with the X-ray technique described in Appendix I, Issue 2, as amended June 16, 1975, of Hawker Siddeley Technical News Sheet (T.N.S.) No. W.6, Issue 3, dated March 17, 1975, or an FAA-approved equivalent inspection.

(b) If any cracks are detected in a spar joint as a result of the inspection required by paragraph (a) of this AD, before further flight, repair the joint in accordance with the appropriate part of Appendix 2 of Hawker Siddeley Technical News Sheet (T.N.S.) No. W. 6, Issue 3, dated March 17, 1975, or an FAA-approved equivalent.

(c) Upon compliance with paragraph (a) of this AD, it is requested that copies of the X-rays or of the results of the FAA-approved equivalent inspection be forwarded to DOT/FAA, Chief, Aircraft Certification Staff, Europe, Africa, and Middle East Region, c/o American Embassy, APO New York, N.Y. 09667.

(Reporting approved by the Bureau of the Budget under B.O.B. No. 04-RO174).

This amendment becomes effective December 1, 1975.

FOOTER:

Source: Official FAA Source ↗

Retrieved: Apr 8, 2026

Rights: U.S. Government Public Domain

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