AD 92-24-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 737-300 Series | Airworthiness Directives; BOEING Model 737-300, -400, and -500 Series Airplanes |
| aircraft | The Boeing Company | 737-400 Series | Airworthiness Directives; BOEING Model 737-300, -400, and -500 Series Airplanes |
| aircraft | The Boeing Company | 737-500 Series | Airworthiness Directives; BOEING Model 737-300, -400, and -500 Series Airplanes |
Unsafe Condition
Uncommanded deployment of the thrust reverser due to a failure in the engine thrust reverser control system.
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Required Actions
Modify the engine thrust reverser control system in accordance with Boeing Alert Service Bulletin 737-78A1055, dated April 2, 1992. Operators may request alternative methods of compliance or adjustments to the compliance time through the FAA Principal Maintenance Inspector.
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Compliance Time
Within 12 months after the effective date of this AD (December 14, 1992)
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Affected Aircraft
BOEING Model 737-300, -400, and -500 Series airplanes listed in Boeing Alert Service Bulletin 737-78A1055, dated April 2, 1992, certificated in any category.
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Thrust Reverser Control System
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_92-24-04.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 92-24-04 Document Type: AD Final Rules Docket Number: 92-NM-103-AD Subject Heading: Airworthiness Directives; BOEING Model 737-300, -400, and -500 Series Airplanes Subject: Thrust Reverser Control System Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 12/14/1992 Make: The Boeing Company Model: 737-300 Series | 737-400 Series | 737-500 Series Product Type: Aircraft Product Subtype: Large Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 92-24-04 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: 92-NM-103-AD AMENDMENT: 39-8409 AD NUMBER: 92-24-04 SUBJECT HEADING: Airworthiness Directives; BOEING Model 737-300, -400, and -500 Series Airplanes ACTION: SUMMARY: DATES: Effective December 14, 1992. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 92-24-04 BOEING: Amendment 39-8409. Docket No. 92-NM-103-AD. Applicability: Model 737-300, -400, and -500 series airplanes; as listed in Boeing Alert Service Bulletin 737-78A1055, dated April 2, 1992, certificated in any category. Compliance: Required as indicated, unless accomplished previously. To prevent uncommanded deployment of the thrust reverser, accomplish the following: (a) Within 12 months after the effective date of this AD, modify the engine thrust reverser control system, in accordance with Boeing Alert Service Bulletin 737-78A1055, dated April 2, 1992. (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, Seattle Aircraft Certification Office (ACO), FAA, Transport Airplane Directorate. Operators shall submit their requests through an FAA Principal Maintenance Inspector, who may concur or comment and then send it to the Manager, Seattle ACO. NOTE: Information concerning the existence of approved alternative methods of compliance with this airworthiness directive, if any, may be obtained from the Seattle ACO. (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 Boeing Alert Service Bulletin 737-78A1055, dated April 2, 1992. 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 Boeing Commercial Airplane Group, P.O. Box 3707, Seattle, Washington 98124-2207. 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 14, 1992. FOOTER:
Document Text
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AD Final Rules - DRS_92-24-04.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 92-24-04 Document Type: AD Final Rules Docket Number: 92-NM-103-AD Subject Heading: Airworthiness Directives; BOEING Model 737-300, -400, and -500 Series Airplanes Subject: Thrust Reverser Control System Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 12/14/1992 Make: The Boeing Company Model: 737-300 Series | 737-400 Series | 737-500 Series 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: 92-24-04 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: 92-NM-103-AD AMENDMENT: 39-8409 AD NUMBER: 92-24-04 SUBJECT HEADING: Airworthiness Directives; BOEING Model 737-300, -400, and -500 Series Airplanes ACTION: SUMMARY: DATES: Effective December 14, 1992. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 92-24-04 BOEING: Amendment 39-8409. Docket No. 92-NM-103-AD. Applicability: Model 737-300, -400, and -500 series airplanes; as listed in Boeing Alert Service Bulletin 737-78A1055, dated April 2, 1992, certificated in any category. Compliance: Required as indicated, unless accomplished previously. To prevent uncommanded deployment of the thrust reverser, accomplish the following: (a) Within 12 months after the effective date of this AD, modify the engine thrust reverser control system, in accordance with Boeing Alert Service Bulletin 737-78A1055, dated April 2, 1992. (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, Seattle Aircraft Certification Office (ACO), FAA, Transport Airplane Directorate. Operators shall submit their requests through an FAA Principal Maintenance Inspector, who may concur or comment and then send it to the Manager, Seattle ACO. NOTE: Information concerning the existence of approved alternative methods of compliance with this airworthiness directive, if any, may be obtained from the Seattle ACO. (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 Boeing Alert Service Bulletin 737-78A1055, dated April 2, 1992. 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 Boeing Commercial Airplane Group, P.O. Box 3707, Seattle, Washington 98124-2207. 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 14, 1992. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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