AD 77-13-09 R1
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Textron Aviation Inc. | BH.125 Series 400A | Airworthiness Directives; HAWKER SIDDELEY AVIATION, LTD Model DH/BH 125 Airplanes Series |
| aircraft | Textron Aviation Inc. | BH.125 Series 600A | Airworthiness Directives; HAWKER SIDDELEY AVIATION, LTD Model DH/BH 125 Airplanes Series |
| aircraft | Textron Aviation Inc. | DH.125 Series 1A | Airworthiness Directives; HAWKER SIDDELEY AVIATION, LTD Model DH/BH 125 Airplanes Series |
| aircraft | Textron Aviation Inc. | DH.125 Series 1A-522 | Airworthiness Directives; HAWKER SIDDELEY AVIATION, LTD Model DH/BH 125 Airplanes Series |
| aircraft | Textron Aviation Inc. | DH.125 Series 1A/R-522 | Airworthiness Directives; HAWKER SIDDELEY AVIATION, LTD Model DH/BH 125 Airplanes Series |
| aircraft | Textron Aviation Inc. | DH.125 Series 1A/S-522 | Airworthiness Directives; HAWKER SIDDELEY AVIATION, LTD Model DH/BH 125 Airplanes Series |
| aircraft | Textron Aviation Inc. | DH.125 Series 3A | Airworthiness Directives; HAWKER SIDDELEY AVIATION, LTD Model DH/BH 125 Airplanes Series |
| aircraft | Textron Aviation Inc. | DH.125 Series 3A/R | Airworthiness Directives; HAWKER SIDDELEY AVIATION, LTD Model DH/BH 125 Airplanes Series |
| aircraft | Textron Aviation Inc. | DH.125 Series 3A/RA | Airworthiness Directives; HAWKER SIDDELEY AVIATION, LTD Model DH/BH 125 Airplanes Series |
| aircraft | Textron Aviation Inc. | DH.125 Series 400A | Airworthiness Directives; HAWKER SIDDELEY AVIATION, LTD Model DH/BH 125 Airplanes Series |
Unsafe Condition
The structural integrity of the bulkhead may be compromised due to fatigue cracking.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Incorporate Hawker Siddeley modifications 25-2402 and 25-2207 in accordance with Service Bulletin 53-46-(2402), Revision 2. Airplanes exceeding 6500 landings or 9-1/2 years since manufacture must be modified within the next 100 landings or 6 months after the effective date.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Prior to the accumulation of 6600 total landings or 10 years after manufacture, whichever occurs first. For airplanes already exceeding thresholds, within the next 100 landings or 6 months after the effective date of this amendment, whichever occurs first.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
HAWKER SIDDELEY AVIATION, LTD Model DH/BH 125 airplanes series 1A up to and including series 600A certificated in all categories.
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Structural Integrity of Bulkhead
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_77-13-09_R.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 77-13-09 R1 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; HAWKER SIDDELEY AVIATION, LTD Model DH/BH 125 Airplanes Series Subject: Structural Integrity of Bulkhead Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 06/01/1984 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: 77-13-09 R1 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-4854 AD NUMBER: 77-13-09 R1 SUBJECT HEADING: Airworthiness Directives; HAWKER SIDDELEY AVIATION, LTD Model DH/BH 125 Airplanes Series ACTION: SUMMARY: DATES: Effective June 1, 1984. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 77-13-09 R1 HAWKER SIDDELEY AVIATION, LTD: Amendment 39-2934 as amended by Amendment 39-4854. Applies to Model DH/BH 125 airplanes series 1A up to and including series 600A certificated in all categories. A. Prior to the accumulation of 6600 total landings or upon reaching 10 years after the date of manufacture of the airplane, whichever occurs first, if not already accomplished, incorporate Hawker Siddeley modifications 25-2402 and 25-2207 in accordance with Section 2, Accomplishment Instructions, of Hawker Siddeley Aviation, Ltd., Service Bulletin 53-46-(2402), Revision 2, dated February 16, 1976. Airplanes which have already exceeded 6500 landings or are over 9-1/2 years from date of manufacture must be modified within the next 100 landings or 6 months after the effective date of this amendment, whichever occurs first. B. Alternate means of compliance which provide an equivalent level of safety may be used when approved by the Manager, Seattle Aircraft Certification Office, FAA, Northwest Mountain Region. C. Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate airplanes to a base for the accomplishment of inspections and/or modifications required by this AD. Amendment 39-2934 became effective July 25, 1977. This Amendment 39-4854 becomes effective June 1, 1984. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_77-13-09_R.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 77-13-09 R1 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; HAWKER SIDDELEY AVIATION, LTD Model DH/BH 125 Airplanes Series Subject: Structural Integrity of Bulkhead Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 06/01/1984 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: 77-13-09 R1 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-4854 AD NUMBER: 77-13-09 R1 SUBJECT HEADING: Airworthiness Directives; HAWKER SIDDELEY AVIATION, LTD Model DH/BH 125 Airplanes Series ACTION: SUMMARY: DATES: Effective June 1, 1984. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 77-13-09 R1 HAWKER SIDDELEY AVIATION, LTD: Amendment 39-2934 as amended by Amendment 39-4854. Applies to Model DH/BH 125 airplanes series 1A up to and including series 600A certificated in all categories. A. Prior to the accumulation of 6600 total landings or upon reaching 10 years after the date of manufacture of the airplane, whichever occurs first, if not already accomplished, incorporate Hawker Siddeley modifications 25-2402 and 25-2207 in accordance with Section 2, Accomplishment Instructions, of Hawker Siddeley Aviation, Ltd., Service Bulletin 53-46-(2402), Revision 2, dated February 16, 1976. Airplanes which have already exceeded 6500 landings or are over 9-1/2 years from date of manufacture must be modified within the next 100 landings or 6 months after the effective date of this amendment, whichever occurs first. B. Alternate means of compliance which provide an equivalent level of safety may be used when approved by the Manager, Seattle Aircraft Certification Office, FAA, Northwest Mountain Region. C. Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate airplanes to a base for the accomplishment of inspections and/or modifications required by this AD. Amendment 39-2934 became effective July 25, 1977. This Amendment 39-4854 becomes effective June 1, 1984. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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