AD 86-21-05
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | BRITISH | 125 | Airworthiness Directives; BRITISH AEROSPACE BAe Models DH/HS/BH 125 Series Airplanes |
Unsafe Condition
Failure of the forward engine mounts
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the forward engine mounts and repair if necessary in accordance with BAe Service Bulletin 71-38, Revision 1, dated October 4, 1985. An alternate means of compliance or adjustment may be used if approved by the Manager, Standardization Branch, ANM-113, FAA, Northwest Mountain Region.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
within 60 days after the effective date of this AD
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Affected Aircraft
BRITISH AEROSPACE BAe Models DH/HS/BH 125 series airplanes equipped with Garrett TFE 731-3R-1H engines
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Federal Register Abstract
Forward Engine Mounts
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_86-21-05.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 86-21-05 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; BRITISH AEROSPACE BAe Models DH/HS/BH 125 Series Airplanes Subject: Forward Engine Mounts Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 10/20/1986 Make: Model: BH.125 Series 400A | BH.125 Series 600A | DH.125 Series 1A | DH.125 Series 1A/R-522 | DH.125 Series ...Show more Product Type: Aircraft Product Subtype: Large Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 86-21-05 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-5418 AD NUMBER: 86-21-05 SUBJECT HEADING: Airworthiness Directives; BRITISH AEROSPACE BAe Models DH/HS/BH 125 Series Airplanes ACTION: SUMMARY: DATES: Effective October 20, 1986. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 86-21-05 BRITISH AEROSPACE: Amendment 39-5418. Applies to BAe Models DH/HS/BH 125 series airplanes equipped with Garrett TFE 731-3R-1H engines, certificated in any category. Compliance is required within 60 days after the effective date of this AD. To prevent failure of the forward engine mounts, accomplish the following, unless previously accomplished: A. Inspect the forward engine mounts and repair, if necessary, in accordance with BAe Service Bulletin 71-38, Revision 1, dated October 4, 1985. B. An alternate means of compliance or adjustment of the compliance time, which provides an acceptable level of safety, may be used when approved by the Manager, Standardization Branch, ANM-113, 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 the inspections and/or modifications required by this AD. All persons affected by this directive, who have not already received the appropriate service document from the manufacturer may obtain copies upon request to British Aerospace, Inc., Librarian, Box 17414, Dulles International Airport, Washington, D.C. 20041. This document may be examined at FAA, Northwest Mountain Region, 17900 Pacific Highway South, Seattle, Washington, or the Seattle Aircraft Certification Office, 9010 East Marginal Way South, Seattle, Washington. This Amendment becomes effective October 20, 1986. FOOTER:
Document Text
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AD Final Rules - DRS_86-21-05.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 86-21-05 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; BRITISH AEROSPACE BAe Models DH/HS/BH 125 Series Airplanes Subject: Forward Engine Mounts Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 10/20/1986 Make: Model: BH.125 Series 400A | BH.125 Series 600A | DH.125 Series 1A | DH.125 Series 1A/R-522 | DH.125 Series ...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: 86-21-05 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-5418 AD NUMBER: 86-21-05 SUBJECT HEADING: Airworthiness Directives; BRITISH AEROSPACE BAe Models DH/HS/BH 125 Series Airplanes ACTION: SUMMARY: DATES: Effective October 20, 1986. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 86-21-05 BRITISH AEROSPACE: Amendment 39-5418. Applies to BAe Models DH/HS/BH 125 series airplanes equipped with Garrett TFE 731-3R-1H engines, certificated in any category. Compliance is required within 60 days after the effective date of this AD. To prevent failure of the forward engine mounts, accomplish the following, unless previously accomplished: A. Inspect the forward engine mounts and repair, if necessary, in accordance with BAe Service Bulletin 71-38, Revision 1, dated October 4, 1985. B. An alternate means of compliance or adjustment of the compliance time, which provides an acceptable level of safety, may be used when approved by the Manager, Standardization Branch, ANM-113, 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 the inspections and/or modifications required by this AD. All persons affected by this directive, who have not already received the appropriate service document from the manufacturer may obtain copies upon request to British Aerospace, Inc., Librarian, Box 17414, Dulles International Airport, Washington, D.C. 20041. This document may be examined at FAA, Northwest Mountain Region, 17900 Pacific Highway South, Seattle, Washington, or the Seattle Aircraft Certification Office, 9010 East Marginal Way South, Seattle, Washington. This Amendment becomes effective October 20, 1986. FOOTER:
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Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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