AD 90-03-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Saab AB, Saab Aerosystems | SAAB 340B | Airworthiness Directives; SAAB-SCANIA Model SF-340A and SAAB 340B Series Airplanes |
| aircraft | Saab AB, Saab Aerosystems | 340A (SAAB SF340A) | Airworthiness Directives; SAAB-SCANIA Model SF-340A and SAAB 340B Series Airplanes |
Unsafe Condition
Loss of certain ice protection systems due to AC generator failures.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect AC generators, P/N 31342-001, for modification status. If modification status blocks are X-stamped in A, B, or C blocks, replace the generator with one X-stamped in D (or later) modification status block before further flight, per SAAB Service Bulletin SF340-24-016, Rev 1. Alternate compliance may be approved by the Manager, Standardization Branch.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 30 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
Saab AB, Saab Aerosystems Model SF-340A and SAAB 340B series airplanes, certificated in any category.
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
AC Generators
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_90-03-03.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 90-03-03 Document Type: AD Final Rules Docket Number: 89-NM-113-AD Subject Heading: Airworthiness Directives; SAAB-SCANIA Model SF-340A and SAAB 340B Series Airplanes Subject: AC Generators Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 02/20/1990 Make: Saab AB, Saab Aerosystems Model: SAAB 340B | 340A (SAAB SF340A) Product Type: Aircraft Product Subtype: Large Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 90-03-03 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: 89-NM-113-AD AMENDMENT: 39-6475 AD NUMBER: 90-03-03 SUBJECT HEADING: Airworthiness Directives; SAAB-SCANIA Model SF-340A and SAAB 340B Series Airplanes ACTION: SUMMARY: ACTION: Final rule DATES: Effective February 20, 1990. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 90-03-03 SAAB-SCANIA: Amendment 39-6475. Docket No. 89-NM-113-AD. Applicability: Model SF-340A and SAAB 340B series airplanes, certificated in any category. Compliance: Required within 30 days after the effective date of this AD, unless previously accomplished. To prevent the loss of certain ice protection systems due to AC generator failures, accomplish the following: A. Inspect the AC generators, P/N 31342-001, for the modification status. 1. If the modification status blocks are X-stamped in the D (or later) modification status block, no further action is required. 2. If the modification status blocks are X-stamped in the A, B, or C modification status block, prior to further flight, replace the AC generator with one X-stamped in the D (or later) modification status block, in accordance with SAAB Service Bulletin SF340-24-016, Revision 1, dated August 28, 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, Northwest Mountain Region. NOTE: The request should be forwarded through an FAA Principal Maintenance Inspector (PMI), who will either concur or comment and then send it 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 SAAB-Scania AB, Product Support, S-581.99, Linkoping, Sweden. These documents may be examined at the FAA, Northwest Mountain Region, Transport Airplane Directorate, 17900 Pacific Highway South, Seattle, Washington, or the Standardization Branch, 9010 East Marginal Way South, Seattle, Washington. This amendment (39-6475, AD 90-03-03) becomes effective on February 20, 1990. FOOTER:
Document Text
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AD Final Rules - DRS_90-03-03.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 90-03-03 Document Type: AD Final Rules Docket Number: 89-NM-113-AD Subject Heading: Airworthiness Directives; SAAB-SCANIA Model SF-340A and SAAB 340B Series Airplanes Subject: AC Generators Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 02/20/1990 Make: Saab AB, Saab Aerosystems Model: SAAB 340B | 340A (SAAB SF340A) 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: 90-03-03 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: 89-NM-113-AD AMENDMENT: 39-6475 AD NUMBER: 90-03-03 SUBJECT HEADING: Airworthiness Directives; SAAB-SCANIA Model SF-340A and SAAB 340B Series Airplanes ACTION: SUMMARY: ACTION: Final rule DATES: Effective February 20, 1990. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 90-03-03 SAAB-SCANIA: Amendment 39-6475. Docket No. 89-NM-113-AD. Applicability: Model SF-340A and SAAB 340B series airplanes, certificated in any category. Compliance: Required within 30 days after the effective date of this AD, unless previously accomplished. To prevent the loss of certain ice protection systems due to AC generator failures, accomplish the following: A. Inspect the AC generators, P/N 31342-001, for the modification status. 1. If the modification status blocks are X-stamped in the D (or later) modification status block, no further action is required. 2. If the modification status blocks are X-stamped in the A, B, or C modification status block, prior to further flight, replace the AC generator with one X-stamped in the D (or later) modification status block, in accordance with SAAB Service Bulletin SF340-24-016, Revision 1, dated August 28, 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, Northwest Mountain Region. NOTE: The request should be forwarded through an FAA Principal Maintenance Inspector (PMI), who will either concur or comment and then send it 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 SAAB-Scania AB, Product Support, S-581.99, Linkoping, Sweden. These documents may be examined at the FAA, Northwest Mountain Region, Transport Airplane Directorate, 17900 Pacific Highway South, Seattle, Washington, or the Standardization Branch, 9010 East Marginal Way South, Seattle, Washington. This amendment (39-6475, AD 90-03-03) becomes effective on February 20, 1990. FOOTER:
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