AD 86-21-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | BAE Systems (Operations) Limited | BAe 146-100A | Airworthiness Directives; BRITISH AEROSPACE BAe Model 146 Series Airplanes |
| aircraft | BAE Systems (Operations) Limited | BAe 146-200A | Airworthiness Directives; BRITISH AEROSPACE BAe Model 146 Series Airplanes |
| aircraft | BAE Systems (Operations) Limited | BAe 146-300A | Airworthiness Directives; BRITISH AEROSPACE BAe Model 146 Series Airplanes |
Unsafe Condition
Control column oscillations in the elevator control system.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Modify the elevator control system in accordance with BAe Service Bulletin 27-42-00671A. An alternate means of compliance or adjustment may be 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, unless previously accomplished
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
BAE Systems (Operations) Limited BAe 146-100A, BAe 146-200A, BAe 146-300A airplanes listed in BAe Service Bulletin 27-42-00671A, dated August 19, 1985.
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Elevator Control System
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_86-21-02.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 86-21-02 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; BRITISH AEROSPACE BAe Model 146 Series Airplanes Subject: Elevator Control System Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 10/24/1986 Make: BAE Systems (Operations) Limited Model: BAe 146-100A | BAe 146-200A | BAe 146-300A Product Type: Aircraft Product Subtype: Large Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 86-21-02 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-5420 AD NUMBER: 86-21-02 SUBJECT HEADING: Airworthiness Directives; BRITISH AEROSPACE BAe Model 146 Series Airplanes ACTION: SUMMARY: DATES: Effective October 24, 1986. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 86-21-02 BRITISH AEROSPACE: Amendment 39-5420. Applies to BAe Model 146 series airplanes, as listed in BAe Service Bulletin 27-42-00671A, dated August 19, 1985, certificated in any category. Compliance is required within 60 days after the effective date of this AD, unless previously accomplished. To prevent control column oscillations, accomplish the following: A. Modify the elevator control system in accordance with BAe Service Bulletin 27- 42-00671A, dated August 19, 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 requirements of this AD. All persons affected by this directive who have not already received the appropriate service bulletin 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 24, 1986. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_86-21-02.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 86-21-02 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; BRITISH AEROSPACE BAe Model 146 Series Airplanes Subject: Elevator Control System Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 10/24/1986 Make: BAE Systems (Operations) Limited Model: BAe 146-100A | BAe 146-200A | BAe 146-300A 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: 86-21-02 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-5420 AD NUMBER: 86-21-02 SUBJECT HEADING: Airworthiness Directives; BRITISH AEROSPACE BAe Model 146 Series Airplanes ACTION: SUMMARY: DATES: Effective October 24, 1986. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 86-21-02 BRITISH AEROSPACE: Amendment 39-5420. Applies to BAe Model 146 series airplanes, as listed in BAe Service Bulletin 27-42-00671A, dated August 19, 1985, certificated in any category. Compliance is required within 60 days after the effective date of this AD, unless previously accomplished. To prevent control column oscillations, accomplish the following: A. Modify the elevator control system in accordance with BAe Service Bulletin 27- 42-00671A, dated August 19, 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 requirements of this AD. All persons affected by this directive who have not already received the appropriate service bulletin 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 24, 1986. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.
Related Airworthiness Directives
2010-09-11R1
final ruleAirworthiness Directives; BAE SYSTEMS (Operations) Limited Airplanes
Unsafe Condition: Wings
2024-17-06
final ruleAirworthiness Directives; BAE Systems (Operations) Limited Airplanes
Unsafe Condition: Cracking on the radius of the rib 0 forward longeron at frame 26, which could lead to failure of adjacent structure, fuselage skin failure, and potential rapid decompression or loss of the airplane.
2024-06-10 Recurring
final ruleAirworthiness Directives; BAE Systems (Operations) Limited Airplanes
Unsafe Condition: cracking on the shoulders of an MLG side stay outer link, which could lead to failure of the MLG side stay outer link and MLG collapse, resulting in a runway departure and the engine or wing contac...
2023-10-02
final ruleAirworthiness Directives; Transport and Commuter Category Airplanes
Unsafe Condition: Radio altimeter anomalies that are undetected by the automation or pilot, particularly close to the ground (e.g., landing flare), could lead to loss of continued safe flight and landing. Additional...