AD 91-07-14
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 737-100 Series | Airworthiness Directives; BOEING Model 737 Series Airplanes |
| aircraft | The Boeing Company | 737-200 Series | Airworthiness Directives; BOEING Model 737 Series Airplanes |
| aircraft | The Boeing Company | 737-200C Series | Airworthiness Directives; BOEING Model 737 Series Airplanes |
| aircraft | The Boeing Company | 737-300 Series | Airworthiness Directives; BOEING Model 737 Series Airplanes |
| aircraft | The Boeing Company | 737-400 Series | Airworthiness Directives; BOEING Model 737 Series Airplanes |
| aircraft | The Boeing Company | 737-500 Series | Airworthiness Directives; BOEING Model 737 Series Airplanes |
| aircraft | The Boeing Company | 737-600 Series | Airworthiness Directives; BOEING Model 737 Series Airplanes |
| aircraft | The Boeing Company | 737-700 Series | Airworthiness Directives; BOEING Model 737 Series Airplanes |
| aircraft | The Boeing Company | 737-800 Series | Airworthiness Directives; BOEING Model 737 Series Airplanes |
Unsafe Condition
High voltage electrical shock hazard to flight deck personnel due to inadequate magnetic standby compass liner.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Install a new magnetic standby compass liner per Boeing Service Bulletin 737-25-1266. Alternative methods or compliance time adjustments may be approved by the FAA Manager, Seattle Aircraft Certification Office.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
within 120 days after the effective date of this AD
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Boeing Model 737 series airplanes listed in Boeing Service Bulletin 737-25-1266 dated July 26, 1990
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Magnetic Compass Liner
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_91-07-14.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 91-07-14 Document Type: AD Final Rules Docket Number: 90-NM-223-AD Subject Heading: Airworthiness Directives; BOEING Model 737 Series Airplanes Subject: Magnetic Compass Liner Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 04/29/1991 Make: The Boeing Company Model: 737-100 Series | 737-200 Series | 737-200C Series | 737-300 Series | 737-400 Series | 737-500 Series...Show more 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: 91-07-14 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: 90-NM-223-AD AMENDMENT: 39-6952 AD NUMBER: 91-07-14 SUBJECT HEADING: Airworthiness Directives; BOEING Model 737 Series Airplanes ACTION: SUMMARY: DATES: Effective April 29, 1991. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 91-07-14 BOEING: Amendment 39-6952. Docket No. 90-NM-223-AD. Applicability: Model 737 series airplanes, as listed in Boeing Service Bulletin 737-25- 1266, dated July 26, 1990, certificated in any category. Compliance: Required within 120 days after the effective date of this AD, unless previously accomplished. To prevent a high voltage electrical shock hazard to flight deck personnel, accomplish the following: A. Install a new magnetic standby compass liner in accordance with Boeing Service Bulletin 737-25-1266, dated July 26, 1990. 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. NOTE: The request should be forwarded through an FAA Principal Maintenance Inspector, who may concur or comment and then send it to the Manager, Seattle ACO. 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 Boeing Commercial Airplane Group, P.O. Box 3707, Seattle, Washington 98124. These documents may be examined at the FAA, Northwest Mountain Region, Transport Airplane Directorate, 1601 Lind Avenue SW., Renton, Washington. This amendment (39-6952, AD 91-07-14) becomes effective on April 29, 1991. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_91-07-14.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 91-07-14 Document Type: AD Final Rules Docket Number: 90-NM-223-AD Subject Heading: Airworthiness Directives; BOEING Model 737 Series Airplanes Subject: Magnetic Compass Liner Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 04/29/1991 Make: The Boeing Company Model: 737-100 Series | 737-200 Series | 737-200C Series | 737-300 Series | 737-400 Series | 737-500 Series...Show more 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: 91-07-14 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: 90-NM-223-AD AMENDMENT: 39-6952 AD NUMBER: 91-07-14 SUBJECT HEADING: Airworthiness Directives; BOEING Model 737 Series Airplanes ACTION: SUMMARY: DATES: Effective April 29, 1991. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 91-07-14 BOEING: Amendment 39-6952. Docket No. 90-NM-223-AD. Applicability: Model 737 series airplanes, as listed in Boeing Service Bulletin 737-25- 1266, dated July 26, 1990, certificated in any category. Compliance: Required within 120 days after the effective date of this AD, unless previously accomplished. To prevent a high voltage electrical shock hazard to flight deck personnel, accomplish the following: A. Install a new magnetic standby compass liner in accordance with Boeing Service Bulletin 737-25-1266, dated July 26, 1990. 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. NOTE: The request should be forwarded through an FAA Principal Maintenance Inspector, who may concur or comment and then send it to the Manager, Seattle ACO. 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 Boeing Commercial Airplane Group, P.O. Box 3707, Seattle, Washington 98124. These documents may be examined at the FAA, Northwest Mountain Region, Transport Airplane Directorate, 1601 Lind Avenue SW., Renton, Washington. This amendment (39-6952, AD 91-07-14) becomes effective on April 29, 1991. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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