AD 77-14-13
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Textron Aviation Inc. | BH.125 Series 600A | Airworthiness Directives; HAWKER SIDDELEY AVIATION, LTD Model BH-125 600A Series Airplanes |
Unsafe Condition
Possible unwanted rolling of the airplane when operating at buffet onset.
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Required Actions
Add vortex generators to the leading edge of each wing by incorporating Hawker Siddeley Aviation, Ltd. Modification No. 252442 in accordance with Service Bulletin 57-48-(2442), including Revision 1, or an FAA-approved equivalent.
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Compliance Time
within the next 300 hours time in service after the effective date of this AD
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Affected Aircraft
HAWKER SIDDELEY AVIATION, LTD Model BH-125 Series 600A airplanes, serial numbers 25/6001-6004, 6007, 6009-6011, 6013, 6014, 6016, 6018, 6020, 6022-6026, 6032, 6034, 6038, 6040, 6044, 6046.
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Federal Register Abstract
Airplane Roll
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_77-14-13.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 77-14-13 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; HAWKER SIDDELEY AVIATION, LTD Model BH-125 600A Series Airplanes Subject: Airplane Roll Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 08/08/1977 Make: Textron Aviation Inc. Model: BH.125 Series 600A Product Type: Aircraft Product Subtype: Large Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 77-14-13 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-2958 AD NUMBER: 77-14-13 SUBJECT HEADING: Airworthiness Directives; HAWKER SIDDELEY AVIATION, LTD Model BH-125 600A Series Airplanes ACTION: SUMMARY: DATES: Effective August 8, 1977. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 77-14-13 HAWKER SIDDELEY AVIATION, LTD: Amendment 39-2958. Applies to Model BH-125 Series 600A airplanes, S/N's 25/6001-6004, 6007, 6009-6011, 6013, 6014, 6016, 6018, 6020, 6022-6026, 6032, 6034, 6038, 6040, 6044, 6046, 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 possible unwanted rolling of the airplane when operating at buffet onset, add vortex generators to the leading edge of each wing by incorporating Hawker Siddeley Aviation, Ltd., Modification No. 252442 in accordance with Section 2 entitled "Accomplishment Instructions" of Hawker Siddeley Aviation, Ltd., Service Bulletin 57-48-(2442), dated June 25, 1975, including Revision 1, dated July 23, 1975, or an FAA-approved equivalent. This amendment becomes effective August 8, 1977. FOOTER:
Document Text
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AD Final Rules - DRS_77-14-13.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 77-14-13 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; HAWKER SIDDELEY AVIATION, LTD Model BH-125 600A Series Airplanes Subject: Airplane Roll Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 08/08/1977 Make: Textron Aviation Inc. Model: BH.125 Series 600A 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: 77-14-13 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-2958 AD NUMBER: 77-14-13 SUBJECT HEADING: Airworthiness Directives; HAWKER SIDDELEY AVIATION, LTD Model BH-125 600A Series Airplanes ACTION: SUMMARY: DATES: Effective August 8, 1977. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 77-14-13 HAWKER SIDDELEY AVIATION, LTD: Amendment 39-2958. Applies to Model BH-125 Series 600A airplanes, S/N's 25/6001-6004, 6007, 6009-6011, 6013, 6014, 6016, 6018, 6020, 6022-6026, 6032, 6034, 6038, 6040, 6044, 6046, 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 possible unwanted rolling of the airplane when operating at buffet onset, add vortex generators to the leading edge of each wing by incorporating Hawker Siddeley Aviation, Ltd., Modification No. 252442 in accordance with Section 2 entitled "Accomplishment Instructions" of Hawker Siddeley Aviation, Ltd., Service Bulletin 57-48-(2442), dated June 25, 1975, including Revision 1, dated July 23, 1975, or an FAA-approved equivalent. This amendment becomes effective August 8, 1977. FOOTER:
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Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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