AD 86-24-08
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | British Aerospace Regional Aircraft | Jetstream Series 3101 | Airworthiness Directives; British Aerospace Model Jetstream 3101 Airplanes |
Unsafe Condition
Loss of main busbar supply could result in inadequate lighting supply to the standby artificial horizon and altitude alert controller indicator.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Incorporate modification JM7490 by changing the electrical supply source for the right upper center panel instrument lighting converter unit from the 28V d.c. main busbar to the 28V d.c. essential busbar. Aircraft may be flown to a location where this AD can be accomplished. Equivalent compliance may be approved by the FAA Manager, Aircraft Certification Staff.
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Compliance Time
within the next 200 hours time-in-service after the effective date of this AD
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Affected Aircraft
British Aerospace Regional Aircraft Model Jetstream 3101 (Serial Numbers 601, 603, 604, 606 to 610, 614, 620, 622, 624 to 626, 628 to 632, 634 to 636, and 638 to 653 inclusive)
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Electrical Supply Source Modification
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_86-24-08.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 86-24-08 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; British Aerospace Model Jetstream 3101 Airplanes Subject: Electrical Supply Source Modification Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 01/07/1987 Make: British Aerospace Regional Aircraft Model: Jetstream Series 3101 Product Type: Aircraft Product Subtype: Small/Large Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 86-24-08 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-5476 AD NUMBER: 86-24-08 SUBJECT HEADING: Airworthiness Directives; British Aerospace Model Jetstream 3101 Airplanes ACTION: SUMMARY: DATES: Effective January 7, 1987. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 86-24-08 BRITISH AEROSPACE (BAe): Amendment 39-5476. Applies to Model 3101 Jetstream (Serial Numbers 601, 603, 604, 606 to 610, 614, 620, 622, 624 to 626, 628 to 632, 634 to 636, and 638 to 653 inclusive) airplanes certificated in any category. Compliance: Required within the next 200 hours time-in-service after the effective date of this AD, unless already accomplished. To ensure that adequate lighting supply to the standby artificial horizon and altitude alert controller indicator (if fitted) is maintained during loss of the main busbar supply, accomplish the following: (a) Incorporate British Aerospace (BAe) modification JM7490 in accordance with the "Accomplishment Instructions" contained in BAe Alert Service Bulletin No. 24-A-JM7490 dated October 30, 1985, Revision No. 1 dated July 22, 1986, by changing the electrical supply source for the right upper center panel instrument lighting converter unit (1LH9) from the 28V d.c. main busbar to the 28V d.c. essential busbar. (b) Aircraft may be flown in accordance with Federal Aviation Regulations 21.197 to a location where this AD can be accomplished. (c) An equivalent means of compliance with this AD may be used if approved by the Manager, Aircraft Certification Staff, AEU-100, Europe, Africa and Middle East Office, FAA c/o American Embassy, 1000 Brussels, Belgium. All persons affected by this directive may obtain copies of the document referred to herein upon request to British Aerospace, Engineering Department, Post Office Box 17414, Dulles International Airport, Washington, D.C. 20041; Telephone (703) 435-9100; or FAA, Office of the Regional Counsel, Room 1558, 601 East 12th Street, Kansas City, Missouri 64106. This amendment becomes effective on January 7, 1987. FOOTER:
Document Text
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AD Final Rules - DRS_86-24-08.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 86-24-08 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; British Aerospace Model Jetstream 3101 Airplanes Subject: Electrical Supply Source Modification Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 01/07/1987 Make: British Aerospace Regional Aircraft Model: Jetstream Series 3101 Product Type: Aircraft Product Subtype: Small/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: 86-24-08 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-5476 AD NUMBER: 86-24-08 SUBJECT HEADING: Airworthiness Directives; British Aerospace Model Jetstream 3101 Airplanes ACTION: SUMMARY: DATES: Effective January 7, 1987. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 86-24-08 BRITISH AEROSPACE (BAe): Amendment 39-5476. Applies to Model 3101 Jetstream (Serial Numbers 601, 603, 604, 606 to 610, 614, 620, 622, 624 to 626, 628 to 632, 634 to 636, and 638 to 653 inclusive) airplanes certificated in any category. Compliance: Required within the next 200 hours time-in-service after the effective date of this AD, unless already accomplished. To ensure that adequate lighting supply to the standby artificial horizon and altitude alert controller indicator (if fitted) is maintained during loss of the main busbar supply, accomplish the following: (a) Incorporate British Aerospace (BAe) modification JM7490 in accordance with the "Accomplishment Instructions" contained in BAe Alert Service Bulletin No. 24-A-JM7490 dated October 30, 1985, Revision No. 1 dated July 22, 1986, by changing the electrical supply source for the right upper center panel instrument lighting converter unit (1LH9) from the 28V d.c. main busbar to the 28V d.c. essential busbar. (b) Aircraft may be flown in accordance with Federal Aviation Regulations 21.197 to a location where this AD can be accomplished. (c) An equivalent means of compliance with this AD may be used if approved by the Manager, Aircraft Certification Staff, AEU-100, Europe, Africa and Middle East Office, FAA c/o American Embassy, 1000 Brussels, Belgium. All persons affected by this directive may obtain copies of the document referred to herein upon request to British Aerospace, Engineering Department, Post Office Box 17414, Dulles International Airport, Washington, D.C. 20041; Telephone (703) 435-9100; or FAA, Office of the Regional Counsel, Room 1558, 601 East 12th Street, Kansas City, Missouri 64106. This amendment becomes effective on January 7, 1987. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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