AD 75-26-13
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Textron Aviation Inc. | BH.125 Series 400A | HAWKER SIDDELEY AVIATION Applies to DH-125, 3AR, 3ARA, 400 A, BH-125, 400 A, and 600A and Series Airplanes |
| aircraft | Textron Aviation Inc. | BH.125 Series 600A | HAWKER SIDDELEY AVIATION Applies to DH-125, 3AR, 3ARA, 400 A, BH-125, 400 A, and 600A and Series Airplanes |
| aircraft | Textron Aviation Inc. | DH.125 Series 3A/R | HAWKER SIDDELEY AVIATION Applies to DH-125, 3AR, 3ARA, 400 A, BH-125, 400 A, and 600A and Series Airplanes |
| aircraft | Textron Aviation Inc. | DH.125 Series 3A/RA | HAWKER SIDDELEY AVIATION Applies to DH-125, 3AR, 3ARA, 400 A, BH-125, 400 A, and 600A and Series Airplanes |
| aircraft | Textron Aviation Inc. | DH.125 Series 400A | HAWKER SIDDELEY AVIATION Applies to DH-125, 3AR, 3ARA, 400 A, BH-125, 400 A, and 600A and Series Airplanes |
Unsafe Condition
Structural damage to the inboard end of the flaps resulting from landing on heavily watered, slush, or snow covered runways.
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Required Actions
Incorporate the structural modification to the inboard end of the flaps (left and right) in accordance with Hawker Siddeley Aviation Ltd. Service Bulletin 27-112 (2426), Revision 1, dated March 11, 1975, or an FAA-approved equivalent.
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Compliance Time
within the next 100 hours' time in service after the effective date of this AD
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Affected Aircraft
DH-125 series 3AR (S/N 25/148 and 149); series 3ARA (S/N 25/151, 152, 153, 155, 156, 158, 159, and NA 700 through NA 710); series 400 A (S/N NA 711 through NA 752); BH-125 series 400 A (S/N NA 753 through NA 780); and series 600A (S/N 25/6001 through 6004, 6007, 6009, 6010, 6011, 6013, 6014, 6016, 6018, 6020, 6022 through 6026, 6032, 6034, 6038, 6040, 6044, 6046, 6047, and 6051)
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Structural Flap Modification
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_75-26-13.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 75-26-13 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: HAWKER SIDDELEY AVIATION Applies to DH-125, 3AR, 3ARA, 400 A, BH-125, 400 A, and 600A and Series Airplanes Subject: Structural Flap Modification Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 01/15/1976 Make: Textron Aviation Inc. Model: BH.125 Series 400A | BH.125 Series 600A | DH.125 Series 3A/R | DH.125 Series 3A/RA | DH.125 Series 400A 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: 75-26-13 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-2469 AD NUMBER: 75-26-13 SUBJECT HEADING: HAWKER SIDDELEY AVIATION Applies to DH-125, 3AR, 3ARA, 400 A, BH-125, 400 A, and 600A and Series Airplanes ACTION: SUMMARY: DATES: Effective January 15, 1976. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 75-26-13 HAWKER SIDDELEY AVIATION: Amendment 39-2469. Applies to DH-125 series 3AR, S/N 25/148 and 149; series 3ARA, S/N 25/151, 152, 153, 155, 156, 158, 159, and NA 700 through NA 710; series 400 A, S/N NA 711 through NA 752 airplanes and to BH-125 series 400 A, S/N NA 753 through NA 780; and series 600A, S/N 25/6001 through 6004, 6007, 6009, 6010, 6011, 6013, 6014, 6016, 6018, 6020, 6022 through 6026, 6032, 6034, 6038, 6040, 6044, 6046, 6047, and 6051 airplanes. Compliance required within the next 100 hours' time in service after the effective date of this AD, unless already accomplished. To prevent structural damage to the inboard end of the flaps which can result from landing on heavily watered, or slush, or snow covered runways, incorporate the structural modification to the inboard end of the flap (L/H & R/H) in accordance with the accomplishment instructions in Hawker Siddeley Aviation Ltd. Service Bulletin 27-112 (2426), Revision 1, dated March 11, 1975, or an FAA-approved equivalent. This amendment becomes effective on January 15, 1976. FOOTER:
Document Text
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AD Final Rules - DRS_75-26-13.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 75-26-13 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: HAWKER SIDDELEY AVIATION Applies to DH-125, 3AR, 3ARA, 400 A, BH-125, 400 A, and 600A and Series Airplanes Subject: Structural Flap Modification Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 01/15/1976 Make: Textron Aviation Inc. Model: BH.125 Series 400A | BH.125 Series 600A | DH.125 Series 3A/R | DH.125 Series 3A/RA | DH.125 Series 400A 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: 75-26-13 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-2469 AD NUMBER: 75-26-13 SUBJECT HEADING: HAWKER SIDDELEY AVIATION Applies to DH-125, 3AR, 3ARA, 400 A, BH-125, 400 A, and 600A and Series Airplanes ACTION: SUMMARY: DATES: Effective January 15, 1976. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 75-26-13 HAWKER SIDDELEY AVIATION: Amendment 39-2469. Applies to DH-125 series 3AR, S/N 25/148 and 149; series 3ARA, S/N 25/151, 152, 153, 155, 156, 158, 159, and NA 700 through NA 710; series 400 A, S/N NA 711 through NA 752 airplanes and to BH-125 series 400 A, S/N NA 753 through NA 780; and series 600A, S/N 25/6001 through 6004, 6007, 6009, 6010, 6011, 6013, 6014, 6016, 6018, 6020, 6022 through 6026, 6032, 6034, 6038, 6040, 6044, 6046, 6047, and 6051 airplanes. Compliance required within the next 100 hours' time in service after the effective date of this AD, unless already accomplished. To prevent structural damage to the inboard end of the flaps which can result from landing on heavily watered, or slush, or snow covered runways, incorporate the structural modification to the inboard end of the flap (L/H & R/H) in accordance with the accomplishment instructions in Hawker Siddeley Aviation Ltd. Service Bulletin 27-112 (2426), Revision 1, dated March 11, 1975, or an FAA-approved equivalent. This amendment becomes effective on January 15, 1976. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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