AD 93-21-05
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | ATR - GIE Avions de Transport R gional | ATR42-200 | Airworthiness Directives; AEROSPATIALE Model ATR42-200 and -300 Series Airplanes |
| aircraft | ATR - GIE Avions de Transport R gional | ATR42-300 | Airworthiness Directives; AEROSPATIALE Model ATR42-200 and -300 Series Airplanes |
| aircraft | ATR - GIE Avions de Transport R gional | ATR42-320 | Airworthiness Directives; AEROSPATIALE Model ATR42-200 and -300 Series Airplanes |
Unsafe Condition
A severe out-of-trim condition, which could lead to reduced controllability of the airplane due to the autopilot disengagement wiring at shelf 82VU.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Modify the autopilot disengagement wiring at shelf 82VU in accordance with Aerospatiale Service Bulletin ATR42-22-0012 or Revision 1. Alternative methods of compliance may be approved by the FAA if submitted through an FAA Principal Maintenance Inspector.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 6 months after the effective date of this AD (December 13, 1993).
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Affected Aircraft
AEROSPATIALE Model ATR42-200 and -300 series airplanes, serial numbers 3 through 179 inclusive.
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Autopilot Wiring
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_93-21-05.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 93-21-05 Document Type: AD Final Rules Docket Number: 93-NM-54-AD Subject Heading: Airworthiness Directives; AEROSPATIALE Model ATR42-200 and -300 Series Airplanes Subject: Autopilot Wiring Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 12/13/1993 Make: ATR - GIE Avions de Transport R gional Model: ATR42-200 | ATR42-300 | ATR42-320 Product Type: Aircraft Product Subtype: Large Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 93-21-05 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: 93-NM-54-AD AMENDMENT: 39-8719 AD NUMBER: 93-21-05 SUBJECT HEADING: Airworthiness Directives; AEROSPATIALE Model ATR42-200 and -300 Series Airplanes ACTION: SUMMARY: DATES: Effective December 13, 1993. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 93-21-05 AEROSPATIALE: Amendment 39-8719. Docket 93-NM-54-AD. Applicability: Model ATR42-200 and -300 series airplanes, serial numbers 3 through 179 inclusive; certificated in any category. Compliance: Required as indicated, unless accomplished previously. To prevent a severe out-of-trim condition, which could lead to reduced controllability of the airplane, accomplish the following: (a) Within 6 months after the effective date of this AD, modify the autopilot disengagement wiring located at shelf 82VU, in accordance with Aerospatiale Service Bulletin ATR42-22-0012, dated April 2, 1990; or Revision 1, dated October 12, 1992. (b) An alternative method of compliance or adjustment of the compliance time that provides an acceptable level of safety may be used if approved by the Manager, Standardization Branch, ANM-113, FAA, Transport Airplane Directorate. Operators shall submit their requests through an appropriate FAA Principal Maintenance Inspector, who may add comments and then send it to the Manager, Standardization Branch, ANM-113. NOTE: Information concerning the existence of approved alternative methods of compliance with this AD, if any, may be obtained from the Standardization Branch, ANM-113. (c) Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate the airplane to a location where the requirements of this AD can be accomplished. (d) The modification shall be done in accordance with Aerospatiale Service Bulletin ATR42-22-0012, dated April 2, 1990; or Aerospatiale Service Bulletin ATR42-22-0012, Revision 1, dated October 12, 1992. Revision 1 of Aerospatiale Service Bulletin ATR42-22-0012 contains the following list of effective pages: Page Number Revision Level Shown on Page Date Shown on Page 1-4, 7-8 1 October 12, 1992 5-6 Original April 2, 1990 This incorporation by reference was approved by the Director of the Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR Part 51. Copies may be obtained from Aerospatiale, 316 Route de Bayonne, 31060 Toulouse, Cedex 03, France. Copies may be inspected at the FAA, Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton, Washington; or at the Office of the Federal Register, 800 North Capitol Street, NW., suite 700, Washington, DC. (e) This amendment becomes effective on December 13, 1993. FOOTER:
Document Text
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AD Final Rules - DRS_93-21-05.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 93-21-05 Document Type: AD Final Rules Docket Number: 93-NM-54-AD Subject Heading: Airworthiness Directives; AEROSPATIALE Model ATR42-200 and -300 Series Airplanes Subject: Autopilot Wiring Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 12/13/1993 Make: ATR - GIE Avions de Transport R gional Model: ATR42-200 | ATR42-300 | ATR42-320 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: 93-21-05 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: 93-NM-54-AD AMENDMENT: 39-8719 AD NUMBER: 93-21-05 SUBJECT HEADING: Airworthiness Directives; AEROSPATIALE Model ATR42-200 and -300 Series Airplanes ACTION: SUMMARY: DATES: Effective December 13, 1993. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 93-21-05 AEROSPATIALE: Amendment 39-8719. Docket 93-NM-54-AD. Applicability: Model ATR42-200 and -300 series airplanes, serial numbers 3 through 179 inclusive; certificated in any category. Compliance: Required as indicated, unless accomplished previously. To prevent a severe out-of-trim condition, which could lead to reduced controllability of the airplane, accomplish the following: (a) Within 6 months after the effective date of this AD, modify the autopilot disengagement wiring located at shelf 82VU, in accordance with Aerospatiale Service Bulletin ATR42-22-0012, dated April 2, 1990; or Revision 1, dated October 12, 1992. (b) An alternative method of compliance or adjustment of the compliance time that provides an acceptable level of safety may be used if approved by the Manager, Standardization Branch, ANM-113, FAA, Transport Airplane Directorate. Operators shall submit their requests through an appropriate FAA Principal Maintenance Inspector, who may add comments and then send it to the Manager, Standardization Branch, ANM-113. NOTE: Information concerning the existence of approved alternative methods of compliance with this AD, if any, may be obtained from the Standardization Branch, ANM-113. (c) Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate the airplane to a location where the requirements of this AD can be accomplished. (d) The modification shall be done in accordance with Aerospatiale Service Bulletin ATR42-22-0012, dated April 2, 1990; or Aerospatiale Service Bulletin ATR42-22-0012, Revision 1, dated October 12, 1992. Revision 1 of Aerospatiale Service Bulletin ATR42-22-0012 contains the following list of effective pages: Page Number Revision Level Shown on Page Date Shown on Page 1-4, 7-8 1 October 12, 1992 5-6 Original April 2, 1990 This incorporation by reference was approved by the Director of the Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR Part 51. Copies may be obtained from Aerospatiale, 316 Route de Bayonne, 31060 Toulouse, Cedex 03, France. Copies may be inspected at the FAA, Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton, Washington; or at the Office of the Federal Register, 800 North Capitol Street, NW., suite 700, Washington, DC. (e) This amendment becomes effective on December 13, 1993. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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