AD 78-07-07
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Textron Aviation Inc. | BH.125 Series 400A | Airworthiness Directives; HAWKER SIDDELEY AVIATION, LIMITED Model DH/BH/HS-125 Airplanes |
| aircraft | Textron Aviation Inc. | BH.125 Series 600A | Airworthiness Directives; HAWKER SIDDELEY AVIATION, LIMITED Model DH/BH/HS-125 Airplanes |
| aircraft | Textron Aviation Inc. | DH.125 Series 1A | Airworthiness Directives; HAWKER SIDDELEY AVIATION, LIMITED Model DH/BH/HS-125 Airplanes |
| aircraft | Textron Aviation Inc. | DH.125 Series 1A-522 | Airworthiness Directives; HAWKER SIDDELEY AVIATION, LIMITED Model DH/BH/HS-125 Airplanes |
| aircraft | Textron Aviation Inc. | DH.125 Series 1A/R-522 | Airworthiness Directives; HAWKER SIDDELEY AVIATION, LIMITED Model DH/BH/HS-125 Airplanes |
| aircraft | Textron Aviation Inc. | DH.125 Series 1A/S-522 | Airworthiness Directives; HAWKER SIDDELEY AVIATION, LIMITED Model DH/BH/HS-125 Airplanes |
| aircraft | Textron Aviation Inc. | DH.125 Series 3A | Airworthiness Directives; HAWKER SIDDELEY AVIATION, LIMITED Model DH/BH/HS-125 Airplanes |
| aircraft | Textron Aviation Inc. | DH.125 Series 3A/R | Airworthiness Directives; HAWKER SIDDELEY AVIATION, LIMITED Model DH/BH/HS-125 Airplanes |
| aircraft | Textron Aviation Inc. | DH.125 Series 3A/RA | Airworthiness Directives; HAWKER SIDDELEY AVIATION, LIMITED Model DH/BH/HS-125 Airplanes |
| aircraft | Textron Aviation Inc. | DH.125 Series 400A | Airworthiness Directives; HAWKER SIDDELEY AVIATION, LIMITED Model DH/BH/HS-125 Airplanes |
| aircraft | Textron Aviation Inc. | HS.125 Series 600A | Airworthiness Directives; HAWKER SIDDELEY AVIATION, LIMITED Model DH/BH/HS-125 Airplanes |
| aircraft | Textron Aviation Inc. | HS.125 Series 700A | Airworthiness Directives; HAWKER SIDDELEY AVIATION, LIMITED Model DH/BH/HS-125 Airplanes |
Unsafe Condition
Lightning strike damage to the radome could result in loss of the radome.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Remove the lightning diverter strips from the radome and install new diverter strips in accordance with Hawker Siddeley Aviation, Limited Modification Service Bulletin 53-50(2626), including Revision 1, or an FAA-approved equivalent.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
within the next 150 hours time in service after the effective date of this AD
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Affected Aircraft
HAWKER SIDDELEY AVIATION, LIMITED Model DH/BH/HS-125 airplanes, all series up to and including the 700A series, excluding 700A series except S/N 0201, 0202, 0203, 0204, and excluding S/N 25/025
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Lightning Strike Damage to Radome
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_78-07-07.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 78-07-07 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; HAWKER SIDDELEY AVIATION, LIMITED Model DH/BH/HS-125 Airplanes Subject: Lightning Strike Damage to Radome Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 05/03/1978 Make: Textron Aviation Inc. Model: BH.125 Series 400A | BH.125 Series 600A | DH.125 Series 1A | DH.125 Series 1A-522 | DH.125 Series 1A...Show more 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: 78-07-07 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-3170 AD NUMBER: 78-07-07 SUBJECT HEADING: Airworthiness Directives; HAWKER SIDDELEY AVIATION, LIMITED Model DH/BH/HS-125 Airplanes ACTION: SUMMARY: DATES: Effective May 3, 1978. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 78-07-07 HAWKER SIDDELEY AVIATION, LIMITED: Amendment 39-3170. Applies to Model DH/BH/HS-125 airplanes, certificated in all categories, all series, up to and including the 700A series, but excluding all 700A series airplanes except S/N 0201, 0202, 0203, and 0204, and also excluding S/N 25/025. Compliance is required as indicated, unless already accomplished. To prevent possible lightning strike damage to the radome which could result in loss of the radome, within the next 150 hours time in service after the effective date of this AD, remove the lightning diverter strips from the radome and install new diverter strips in accordance with the section entitled "Accomplishment Instructions" and associated drawings of Hawker Siddeley Aviation, Limited, Modification Service Bulletin 53-50(2626), dated August 26, 1977, including Revision 1 (pages 1, 5, 6, and 8) dated October 4, 1977, or an FAA-approved equivalent. This amendment becomes effective May 3, 1978. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_78-07-07.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 78-07-07 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; HAWKER SIDDELEY AVIATION, LIMITED Model DH/BH/HS-125 Airplanes Subject: Lightning Strike Damage to Radome Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 05/03/1978 Make: Textron Aviation Inc. Model: BH.125 Series 400A | BH.125 Series 600A | DH.125 Series 1A | DH.125 Series 1A-522 | DH.125 Series 1A...Show more 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: 78-07-07 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-3170 AD NUMBER: 78-07-07 SUBJECT HEADING: Airworthiness Directives; HAWKER SIDDELEY AVIATION, LIMITED Model DH/BH/HS-125 Airplanes ACTION: SUMMARY: DATES: Effective May 3, 1978. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 78-07-07 HAWKER SIDDELEY AVIATION, LIMITED: Amendment 39-3170. Applies to Model DH/BH/HS-125 airplanes, certificated in all categories, all series, up to and including the 700A series, but excluding all 700A series airplanes except S/N 0201, 0202, 0203, and 0204, and also excluding S/N 25/025. Compliance is required as indicated, unless already accomplished. To prevent possible lightning strike damage to the radome which could result in loss of the radome, within the next 150 hours time in service after the effective date of this AD, remove the lightning diverter strips from the radome and install new diverter strips in accordance with the section entitled "Accomplishment Instructions" and associated drawings of Hawker Siddeley Aviation, Limited, Modification Service Bulletin 53-50(2626), dated August 26, 1977, including Revision 1 (pages 1, 5, 6, and 8) dated October 4, 1977, or an FAA-approved equivalent. This amendment becomes effective May 3, 1978. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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