AD 91-24-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Saab AB, Saab Aerosystems | SAAB 340B | Airworthiness Directives; SAAB-SCANIA Model SF-340A and Model SAAB 340B Series Airplanes |
| aircraft | Saab AB, Saab Aerosystems | 340A (SAAB SF340A) | Airworthiness Directives; SAAB-SCANIA Model SF-340A and Model SAAB 340B Series Airplanes |
Unsafe Condition
The Avibank latches on the nacelle forward cowling doors 7271110-501/601 may fail to secure the doors, allowing them to open during flight.
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Required Actions
Within 90 days after the effective date, inspect and measure the Avibank latches in accordance with SAAB Service Bulletin 340-71-035, Revision 1. If measurements are outside specified limits, install new latch triggers prior to further flight. Compliance may be adjusted with FAA approval.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 90 days after the effective date of this AD, inspect and measure the Avibank latches. If the measurement is outside the limits, prior to further flight, install new latch triggers.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
SAAB-SCANIA Model SF-340A (Serial Numbers 004 through 159) and Model SAAB 340B (Serial Numbers 160 through 200)
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Federal Register Abstract
Nacelle Cowling Doors
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_91-24-06.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 91-24-06 Document Type: AD Final Rules Docket Number: 91-NM-132-AD Subject Heading: Airworthiness Directives; SAAB-SCANIA Model SF-340A and Model SAAB 340B Series Airplanes Subject: Nacelle Cowling Doors Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 01/07/1992 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Aerosystems Model: SAAB 340B | 340A (SAAB SF340A) Product Type: Aircraft Product Subtype: Large Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 91-24-06 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: 91-NM-132-AD AMENDMENT: 39-8092 AD NUMBER: 91-24-06 SUBJECT HEADING: Airworthiness Directives; SAAB-SCANIA Model SF-340A and Model SAAB 340B Series Airplanes ACTION: Final rule SUMMARY: DATES: Effective January 7, 1992. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 91-24-06 SAAB-SCANIA: Amendment 39-8092. Docket No. 91-NM-132-AD. Applicability: Model SF-340A series airplanes, Serial Numbers 004 through 159; and Model SAAB 340B series airplanes, Serial Numbers 160 through 200; certificated in any category. Compliance: Required as indicated, unless previously accomplished. To prevent the cowling doors from opening during flight, accomplish the following: (a) Within 90 days after the effective date of this AD, inspect and measure the Avibank latches on the nacelle forward cowling doors 7271110- 501/601, in accordance with SAAB Service Bulletin 340-71-035, Revision 1, dated December 18, 1990. (1) If the measurement is within the limits specified in Figure 2 of the service bulletin, no further action is required. (2) If the measurement is outside the limits specified in Figure 2 of the service bulletin, prior to further flight, install new latch triggers in accordance with paragraph 2.C. of the service bulletin. (b) An alternative method 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 forwarded through an FAA Principal Maintenance Inspector, who may 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. (d) The inspection and replacement requirements shall be done in accordance with SAAB Service Bulletin 340-71-035, Revision 1, dated December 18, 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 SAAB-Scania AB, Product Support, S-581.88, Linkoping, Sweden. Copies may be inspected at the FAA, Transport Airplane Directorate, 1601 Lind Avenue S.W., Renton, Washington; or at the Office of the Federal Register, 1100 L Street N.W., Room 8401, Washington, D.C. This amendment (39-8092, AD 91-24-06) becomes effective on January 7, 1992. FOOTER:
Document Text
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AD Final Rules - DRS_91-24-06.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 91-24-06 Document Type: AD Final Rules Docket Number: 91-NM-132-AD Subject Heading: Airworthiness Directives; SAAB-SCANIA Model SF-340A and Model SAAB 340B Series Airplanes Subject: Nacelle Cowling Doors Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 01/07/1992 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: 91-24-06 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: 91-NM-132-AD AMENDMENT: 39-8092 AD NUMBER: 91-24-06 SUBJECT HEADING: Airworthiness Directives; SAAB-SCANIA Model SF-340A and Model SAAB 340B Series Airplanes ACTION: Final rule SUMMARY: DATES: Effective January 7, 1992. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 91-24-06 SAAB-SCANIA: Amendment 39-8092. Docket No. 91-NM-132-AD. Applicability: Model SF-340A series airplanes, Serial Numbers 004 through 159; and Model SAAB 340B series airplanes, Serial Numbers 160 through 200; certificated in any category. Compliance: Required as indicated, unless previously accomplished. To prevent the cowling doors from opening during flight, accomplish the following: (a) Within 90 days after the effective date of this AD, inspect and measure the Avibank latches on the nacelle forward cowling doors 7271110- 501/601, in accordance with SAAB Service Bulletin 340-71-035, Revision 1, dated December 18, 1990. (1) If the measurement is within the limits specified in Figure 2 of the service bulletin, no further action is required. (2) If the measurement is outside the limits specified in Figure 2 of the service bulletin, prior to further flight, install new latch triggers in accordance with paragraph 2.C. of the service bulletin. (b) An alternative method 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 forwarded through an FAA Principal Maintenance Inspector, who may 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. (d) The inspection and replacement requirements shall be done in accordance with SAAB Service Bulletin 340-71-035, Revision 1, dated December 18, 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 SAAB-Scania AB, Product Support, S-581.88, Linkoping, Sweden. Copies may be inspected at the FAA, Transport Airplane Directorate, 1601 Lind Avenue S.W., Renton, Washington; or at the Office of the Federal Register, 1100 L Street N.W., Room 8401, Washington, D.C. This amendment (39-8092, AD 91-24-06) becomes effective on January 7, 1992. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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