AD 92-07-09
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 changes to the target altitude displayed in the altitude window of the autopilot mode control panel (MCP) due to Sperry SP300 Autopilot Flight Control Computers and Mode Control Panels.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Incorporate specified procedures into the AFM's Limitations Section within 10 days after April 5, 1990 for Model 737-300 series. Modify the MCP within 18 months after May 4, 1992 for all models per Boeing Alert Service Bulletin 737-22A1098. Remove AFM limitations after MCP modification.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 10 days after April 5, 1990 (for Model 737-300 series) and within 18 months after May 4, 1992 (for all models).
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
BOEING Model 737-300, -400, and -500 series airplanes equipped with Sperry SP300 Autopilot Flight Control Computers and Mode Control Panels (MCP).
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Autopilot Limitations
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_92-07-09.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 92-07-09 Document Type: AD Final Rules Docket Number: 91-NM-215-AD Subject Heading: Airworthiness Directives; BOEING Model 737-300, -400, and -500 Series Airplanes Subject: Autopilot Limitations Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 05/04/1992 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737-300 Series | 737-400 Series | 737-500 Series Product Type: Aircraft Product Subtype: Large Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 92-07-09 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: 91-NM-215-AD AMENDMENT: 39-8205 AD NUMBER: 92-07-09 SUBJECT HEADING: Airworthiness Directives; BOEING Model 737-300, -400, and -500 Series Airplanes ACTION: SUMMARY: DATES: Effective May 4, 1992. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 92-07-09 BOEING: Amendment 39-8205. Docket No. 91-NM-215-AD. Supersedes AD 90- 07-02, Amendment 39-6547. Applicability: Model 737-300, -400, and -500 series airplanes; equipped with Sperry SP300 Autopilot Flight Control Computers and Mode Control Panels (MCP); certificated in any category. Compliance: Required as indicated, unless accomplished previously. To prevent uncommanded changes to the target altitude displayed in the altitude window of the autopilot mode control panel (MCP), accomplish the following: (a) For Model 737-300 series airplanes: Within 10 days after April 5, 1990 (the effective date of AD 90-07-02, Amendment 39-6547), incorporate the following procedures into the Limitations Section of the FAA-approved Airplane Flight Manual (AFM). This may be accomplished by inserting a copy of this AD in the AFM. "Autopilot Limitations For airplanes with SP300 autopilot MCP. Flightcrews must use the following procedures: 1. Check MCP settings after any electrical power interruptions. 2. Following change in ALT selection in the MCP window, check ALT display to ensure desired altitude is displayed. 3. Closely monitor altitude during all altitude changes to ensure that the autopilot captures and levels off at the desired altitude. NOTE: Standard 'callouts,' crew coordination, and cross-checking of MCP settings and flight instruments are necessary to detect any nonselected MCP display number changes." (b) For all airplanes: Within 18 months after the effective date of this AD, modify the MCP in accordance with Boeing Alert Service Bulletin 737-22A1098, dated January 17, 1991. (c) After accomplishment of paragraph (b) of this AD, remove the AFM limitation that is specified in paragraph (a) of this AD. NOTE: For Model 737-400 and -500 series airplanes, this limitation was included in the amended type certificate, and must be deleted in accordance with this paragraph. (d) 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. The request shall be forwarded through an FAA Principal Maintenance Inspector, who may concur or comment and then send it to the Manager, Seattle ACO. (e) 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. (f) The modification shall be done in accordance with Boeing Alert Service Bulletin 737-22A1098, dated January 17, 1991. 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. Copies may be inspected at the FAA, Transport Airplane Directorate, 1601 Lind Avenue SW., Renton, Washington; or at the Office of the Federal Register, 1100 L Street NW., Room 8401, Washington, DC. (g) This amendment becomes effective on May 4, 1992. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_92-07-09.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 92-07-09 Document Type: AD Final Rules Docket Number: 91-NM-215-AD Subject Heading: Airworthiness Directives; BOEING Model 737-300, -400, and -500 Series Airplanes Subject: Autopilot Limitations Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 05/04/1992 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: 92-07-09 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: 91-NM-215-AD AMENDMENT: 39-8205 AD NUMBER: 92-07-09 SUBJECT HEADING: Airworthiness Directives; BOEING Model 737-300, -400, and -500 Series Airplanes ACTION: SUMMARY: DATES: Effective May 4, 1992. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 92-07-09 BOEING: Amendment 39-8205. Docket No. 91-NM-215-AD. Supersedes AD 90- 07-02, Amendment 39-6547. Applicability: Model 737-300, -400, and -500 series airplanes; equipped with Sperry SP300 Autopilot Flight Control Computers and Mode Control Panels (MCP); certificated in any category. Compliance: Required as indicated, unless accomplished previously. To prevent uncommanded changes to the target altitude displayed in the altitude window of the autopilot mode control panel (MCP), accomplish the following: (a) For Model 737-300 series airplanes: Within 10 days after April 5, 1990 (the effective date of AD 90-07-02, Amendment 39-6547), incorporate the following procedures into the Limitations Section of the FAA-approved Airplane Flight Manual (AFM). This may be accomplished by inserting a copy of this AD in the AFM. "Autopilot Limitations For airplanes with SP300 autopilot MCP. Flightcrews must use the following procedures: 1. Check MCP settings after any electrical power interruptions. 2. Following change in ALT selection in the MCP window, check ALT display to ensure desired altitude is displayed. 3. Closely monitor altitude during all altitude changes to ensure that the autopilot captures and levels off at the desired altitude. NOTE: Standard 'callouts,' crew coordination, and cross-checking of MCP settings and flight instruments are necessary to detect any nonselected MCP display number changes." (b) For all airplanes: Within 18 months after the effective date of this AD, modify the MCP in accordance with Boeing Alert Service Bulletin 737-22A1098, dated January 17, 1991. (c) After accomplishment of paragraph (b) of this AD, remove the AFM limitation that is specified in paragraph (a) of this AD. NOTE: For Model 737-400 and -500 series airplanes, this limitation was included in the amended type certificate, and must be deleted in accordance with this paragraph. (d) 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. The request shall be forwarded through an FAA Principal Maintenance Inspector, who may concur or comment and then send it to the Manager, Seattle ACO. (e) 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. (f) The modification shall be done in accordance with Boeing Alert Service Bulletin 737-22A1098, dated January 17, 1991. 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. Copies may be inspected at the FAA, Transport Airplane Directorate, 1601 Lind Avenue SW., Renton, Washington; or at the Office of the Federal Register, 1100 L Street NW., Room 8401, Washington, DC. (g) This amendment becomes effective on May 4, 1992. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.
Related Airworthiness Directives
2025-02-02 Recurring
final ruleAirworthiness Directives; The Boeing Company Airplanes
Unsafe Condition: cracks in the frame inner chord and web at station (STA) 727 between S-11L and S-13L, which could result in the inability of a principal structural element to sustain limit load, and adversely affe...
2024-23-03
final ruleAirworthiness Directives; The Boeing Company Airplanes
Unsafe Condition: Failure of the spoiler deflection to engage the cruise thrust split monitor (MONFD) used by the autothrottle (A/T) system, which could lead to significant throttle split, leading to asymmetric thru...
2024-18-08
final ruleAirworthiness Directives; The Boeing Company Airplanes
Unsafe Condition: The protective spiral wrap used on certain galley wire bundles does not have the correct flammability properties and may not self-extinguish.
2023-13-12 Recurring
final ruleAirworthiness Directives; The Boeing Company Airplanes
Unsafe Condition: premature aging of certain passenger chemical oxygen generators, which could fail to deliver oxygen during an emergency, possibly resulting in injury to the airplane occupants.