AD 77-15-13
final rule
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | de Havilland Aircraft Co., Ltd., The | D.H.114 Heron Series 2A | Airworthiness Directives; Hawker Siddeley Aviation, Limited Model DH-114 Airplanes |
| aircraft | de Havilland Aircraft Co., Ltd., The | D.H.114 Heron Series 2DA | Airworthiness Directives; Hawker Siddeley Aviation, Limited Model DH-114 Airplanes |
| aircraft | de Havilland Aircraft Co., Ltd., The | D.H.114 Heron Series 2X | Airworthiness Directives; Hawker Siddeley Aviation, Limited Model DH-114 Airplanes |
Unsafe Condition
Possible seizure of the main landing gear damper ram, P/N AC11164, leading to consequent damage to the aircraft upon landing.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Modify the damper ram in accordance with Part A of Dunlop Aviation Division Service Bulletin 32-824, and reidentify it as P/N AC65528, Mod. 1.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
within the next 300 hours time in service after the effective date of this AD
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Hawker Siddeley Aviation, Limited Model DH-114 airplanes certificated in all categories
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Main Landing Gear Damper Ram
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_77-15-13.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 77-15-13 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Hawker Siddeley Aviation, Limited Model DH-114 Airplanes Subject: Main Landing Gear Damper Ram Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 08/24/1977 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Heron Series 2DA | D.H.114 Heron Series 2X Product Type: Aircraft Product Subtype: Small/Large Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 77-15-13 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-2983 AD NUMBER: 77-15-13 SUBJECT HEADING: Airworthiness Directives; Hawker Siddeley Aviation, Limited Model DH-114 Airplanes ACTION: SUMMARY: DATES: Effective August 24, 1977. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 77-15-13 HAWKER SIDDELEY AVIATION, LTD: Amendment 39-2983. Applies to Model DH-114 airplanes certificated in all categories. Compliance is required within the next 300 hours time in service after the effective date of this AD, unless already accomplished. To prevent the possible seizure of the main landing gear damper ram, and consequent damage to the aircraft upon landing, accomplish the following: (a) Modify the damper ram, P/N AC11164, in accordance with Part A of the section entitled "Accomplishment Instructions" of Dunlop Aviation Division Service Bulletin 32-824, dated April 5, 1973, or an FAA-approved equivalent. (b) Upon completion of the modification specified in paragraph (a) of this AD, reidentify the modified damper ram as P/N AC65528, Mod. 1. (Hawker Siddeley Aviation, Ltd., Series: Heron (114), TNS. U.15, Issue 2, dated April 30, 1973, refers to this same subject.) This amendment becomes effective August 24, 1977. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_77-15-13.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 77-15-13 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Hawker Siddeley Aviation, Limited Model DH-114 Airplanes Subject: Main Landing Gear Damper Ram Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 08/24/1977 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: 77-15-13 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-2983 AD NUMBER: 77-15-13 SUBJECT HEADING: Airworthiness Directives; Hawker Siddeley Aviation, Limited Model DH-114 Airplanes ACTION: SUMMARY: DATES: Effective August 24, 1977. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 77-15-13 HAWKER SIDDELEY AVIATION, LTD: Amendment 39-2983. Applies to Model DH-114 airplanes certificated in all categories. Compliance is required within the next 300 hours time in service after the effective date of this AD, unless already accomplished. To prevent the possible seizure of the main landing gear damper ram, and consequent damage to the aircraft upon landing, accomplish the following: (a) Modify the damper ram, P/N AC11164, in accordance with Part A of the section entitled "Accomplishment Instructions" of Dunlop Aviation Division Service Bulletin 32-824, dated April 5, 1973, or an FAA-approved equivalent. (b) Upon completion of the modification specified in paragraph (a) of this AD, reidentify the modified damper ram as P/N AC65528, Mod. 1. (Hawker Siddeley Aviation, Ltd., Series: Heron (114), TNS. U.15, Issue 2, dated April 30, 1973, refers to this same subject.) This amendment becomes effective August 24, 1977. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.