AD 91-04-08
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | ATR - GIE Avions de Transport R gional | ATR42-300 | Airworthiness Directives; AEROSPATIALE Model ATR42-300 and ATR42-320 Series Airplanes |
| aircraft | ATR - GIE Avions de Transport R gional | ATR42-320 | Airworthiness Directives; AEROSPATIALE Model ATR42-300 and ATR42-320 Series Airplanes |
Unsafe Condition
Loss of cockpit voice recorder (CVR) information due to the absence of the automatic shut-off feature after Modification 1848 and lack of Modification 2311.
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Required Actions
Within 30 days after the effective date, restore the automatic shut-off feature to the CVR by rewiring relay 9RK per Aerospatiale Service Bulletin ATR42-23-0018. Alternate compliance or time adjustment may be approved by the Manager, Standardization Branch, ANM-113.
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Compliance Time
Within 30 days after the effective date of this AD
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Affected Aircraft
AEROSPATIALE Model ATR42-300 and ATR42-320 series airplanes, Serial Numbers 123 through 142, fitted with Modification 1848 and not incorporating Modification 2311.
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Federal Register Abstract
Cockpit Voice Recorder
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_91-04-08.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 91-04-08 Document Type: AD Final Rules Docket Number: 90-NM-226-AD Subject Heading: Airworthiness Directives; AEROSPATIALE Model ATR42-300 and ATR42-320 Series Airplanes Subject: Cockpit Voice Recorder Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 03/22/1991 Make: ATR - GIE Avions de Transport R gional Model: ATR42-300 | ATR42-320 Product Type: Aircraft Product Subtype: Large Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 91-04-08 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: 90-NM-226-AD AMENDMENT: 39-6898 AD NUMBER: 91-04-08 SUBJECT HEADING: Airworthiness Directives; AEROSPATIALE Model ATR42-300 and ATR42-320 Series Airplanes ACTION: SUMMARY: DATES: Effective March 22, 1991. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 91-04-08 AEROSPATIALE: Amendment 39-6898. Docket No. 90-NM-226-AD. Applicability: Model ATR42-300 and ATR42-320 series airplanes, Serial Numbers 123 through 142, which have been fitted with Modification 1848 and have not incorporated Modification 2311, certificated in any category. Compliance: Required as indicated, unless previously accomplished. To prevent loss of cockpit voice recorder (CVR) information, accomplish the following: A. Within 30 days after the effective date of this AD, restore the automatic shut-off feature to the CVR by rewiring relay 9RK, in accordance with Aerospatiale Service Bulletin ATR42-23-0018, dated July 13, 1989. 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, Transport Airplane Directorate. NOTE: The request should be submitted directly to the Manager, Standardization Branch, ANM-113, and a copy sent to the cognizant FAA Principal Inspector (PI). The PI will then forward comments or concurrence to the Manager, Standardization Branch, ANM-113. C. Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate airplanes to a base in order to comply with the requirements of this AD. All persons affected by this directive who have not already received the appropriate service documents from the manufacturer may obtain copies upon request to Aerospatiale, 316 Route de Bayonne, 31060 Toulouse, Cedex 03, France. These documents may be examined at the FAA, Northwest Mountain Region, Transport Airplane Directorate, 1601 Lind Avenue S.W., Renton, Washington. This amendment (39-6898, AD 91-04-08) becomes effective on March 22, 1991. FOOTER:
Document Text
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AD Final Rules - DRS_91-04-08.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 91-04-08 Document Type: AD Final Rules Docket Number: 90-NM-226-AD Subject Heading: Airworthiness Directives; AEROSPATIALE Model ATR42-300 and ATR42-320 Series Airplanes Subject: Cockpit Voice Recorder Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 03/22/1991 Make: ATR - GIE Avions de Transport R gional Model: 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: 91-04-08 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: 90-NM-226-AD AMENDMENT: 39-6898 AD NUMBER: 91-04-08 SUBJECT HEADING: Airworthiness Directives; AEROSPATIALE Model ATR42-300 and ATR42-320 Series Airplanes ACTION: SUMMARY: DATES: Effective March 22, 1991. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 91-04-08 AEROSPATIALE: Amendment 39-6898. Docket No. 90-NM-226-AD. Applicability: Model ATR42-300 and ATR42-320 series airplanes, Serial Numbers 123 through 142, which have been fitted with Modification 1848 and have not incorporated Modification 2311, certificated in any category. Compliance: Required as indicated, unless previously accomplished. To prevent loss of cockpit voice recorder (CVR) information, accomplish the following: A. Within 30 days after the effective date of this AD, restore the automatic shut-off feature to the CVR by rewiring relay 9RK, in accordance with Aerospatiale Service Bulletin ATR42-23-0018, dated July 13, 1989. 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, Transport Airplane Directorate. NOTE: The request should be submitted directly to the Manager, Standardization Branch, ANM-113, and a copy sent to the cognizant FAA Principal Inspector (PI). The PI will then forward comments or concurrence to the Manager, Standardization Branch, ANM-113. C. Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate airplanes to a base in order to comply with the requirements of this AD. All persons affected by this directive who have not already received the appropriate service documents from the manufacturer may obtain copies upon request to Aerospatiale, 316 Route de Bayonne, 31060 Toulouse, Cedex 03, France. These documents may be examined at the FAA, Northwest Mountain Region, Transport Airplane Directorate, 1601 Lind Avenue S.W., Renton, Washington. This amendment (39-6898, AD 91-04-08) becomes effective on March 22, 1991. FOOTER:
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Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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