AD 89-12-10
final rule
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 747-100 Series | Airworthiness Directives; BOEING Model 747-100, 747-200, 747-300, and 747-SP Series Airplanes |
| aircraft | The Boeing Company | 747-100B Series | Airworthiness Directives; BOEING Model 747-100, 747-200, 747-300, and 747-SP Series Airplanes |
| aircraft | The Boeing Company | 747-100B SUD Series | Airworthiness Directives; BOEING Model 747-100, 747-200, 747-300, and 747-SP Series Airplanes |
| aircraft | The Boeing Company | 747-200B Series | Airworthiness Directives; BOEING Model 747-100, 747-200, 747-300, and 747-SP Series Airplanes |
| aircraft | The Boeing Company | 747-200C Series | Airworthiness Directives; BOEING Model 747-100, 747-200, 747-300, and 747-SP Series Airplanes |
| aircraft | The Boeing Company | 747-200F Series | Airworthiness Directives; BOEING Model 747-100, 747-200, 747-300, and 747-SP Series Airplanes |
| aircraft | The Boeing Company | 747-300 Series | Airworthiness Directives; BOEING Model 747-100, 747-200, 747-300, and 747-SP Series Airplanes |
| aircraft | The Boeing Company | 747SP Series | Airworthiness Directives; BOEING Model 747-100, 747-200, 747-300, and 747-SP Series Airplanes |
Unsafe Condition
Lower wing surface fuel tank access door penetration due to impact from low energy engine and tire debris could create a fire hazard.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replace specific inboard fuel tank access doors on left and right wings with doors having impact resistance equivalent to 2024-T3 aluminum 0.140-inch thick and fire resistance as defined in FAR Part 1. The first replacement (Nos. 544AB, 545AB, 644AB, 645AB) must be done within 8 months after the effective date. The second replacement (14 doors: seven on each wing as listed) must be done within 30 months after the effective date.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within the next 8 months after the effective date of this AD (first action) and within the next 30 months after the effective date of this AD (second action).
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
BOEING Model 747-100, 747-200, 747-300, and 747-SP series airplanes, certificated in any category.
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Fuel Tank Access Door
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_89-12-10.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 89-12-10 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; BOEING Model 747-100, 747-200, 747-300, and 747-SP Series Airplanes Subject: Fuel Tank Access Door Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 07/08/1989 Make: The Boeing Company Model: 747-100 Series | 747-100B Series | 747-100B SUD Series | 747-200B Series | 747-200C Series | 747-200...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: 89-12-10 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-6230 AD NUMBER: 89-12-10 SUBJECT HEADING: Airworthiness Directives; BOEING Model 747-100, 747-200, 747-300, and 747-SP Series Airplanes ACTION: SUMMARY: DATES: Effective July 8, 1989. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 89-12-10 BOEING: Amendment 39-6230. Applicability: Model 747-100, 747-200, 747-300, and 747-SP series airplanes, certificated in any category. Compliance: Required as indicated, unless previously accomplished. To minimize the fire hazard as a result of lower wing surface fuel tank access door penetration due to impact from low energy engine and tire debris, accomplish the following: A. Within the next 8 months after the effective date of this AD, replace the two inboard fuel tank access doors on each lower wing skin (Nos. 544AB and 545AB) on the left wing and (Nos. 644AB and 645AB) on the right wing, with doors having impact resistance equivalent to that of 2024-T3 aluminum 0.140-inch thick, as approved by the Manager, Seattle Aircraft Certification Office, FAA, Northwest Mountain Region in accordance with the procedures described in Section 28-11-02 of the Boeing Model 747 Maintenance Manual. The replacement doors must also be fire resistant, as defined in the Federal Aviation Regulations, Part 1. B. Within the next 30 months after the effective date of this AD, replace the following 14 lower wing surface fuel tank access doors, seven on the left wing (Nos. 546AB, 546BB, 552AB, 552BB, 552CB, 552DB, and 552EB), and seven on the right wing (Nos. 646AB, 646BB, 652AB, 652BB, 652CB, 652DB, and 652EB), with doors having impact resistance equivalent to that of 2024-T3 aluminum 0.140-inch thick, as approved by the Manager, Seattle Aircraft Certification Office, FAA, Northwest Mountain Region, in accordance with the procedures described in Section 28-11-02 of the Boeing Model 747 Maintenance Manual. The replacement doors must also be fire resistant, as defined in the Federal Aviation Regulations, Part 1. C. 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, Seattle Aircraft Certification Office, 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, Seattle Aircraft Certification Office. D. 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 Airplanes, P.O. Box 3707, Seattle, Washington 98124. These documents may be examined at FAA, Northwest Mountain Region, Transport Airplane Directorate, 17900 Pacific Highway South, Seattle, Washington, or at the Seattle Aircraft Certification Office, 9010 East Marginal Way South, Seattle, Washington. This amendment (39-6230, AD 89-12-10) becomes effective on July 8, 1989. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_89-12-10.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 89-12-10 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; BOEING Model 747-100, 747-200, 747-300, and 747-SP Series Airplanes Subject: Fuel Tank Access Door Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 07/08/1989 Make: The Boeing Company Model: 747-100 Series | 747-100B Series | 747-100B SUD Series | 747-200B Series | 747-200C Series | 747-200...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: 89-12-10 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-6230 AD NUMBER: 89-12-10 SUBJECT HEADING: Airworthiness Directives; BOEING Model 747-100, 747-200, 747-300, and 747-SP Series Airplanes ACTION: SUMMARY: DATES: Effective July 8, 1989. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 89-12-10 BOEING: Amendment 39-6230. Applicability: Model 747-100, 747-200, 747-300, and 747-SP series airplanes, certificated in any category. Compliance: Required as indicated, unless previously accomplished. To minimize the fire hazard as a result of lower wing surface fuel tank access door penetration due to impact from low energy engine and tire debris, accomplish the following: A. Within the next 8 months after the effective date of this AD, replace the two inboard fuel tank access doors on each lower wing skin (Nos. 544AB and 545AB) on the left wing and (Nos. 644AB and 645AB) on the right wing, with doors having impact resistance equivalent to that of 2024-T3 aluminum 0.140-inch thick, as approved by the Manager, Seattle Aircraft Certification Office, FAA, Northwest Mountain Region in accordance with the procedures described in Section 28-11-02 of the Boeing Model 747 Maintenance Manual. The replacement doors must also be fire resistant, as defined in the Federal Aviation Regulations, Part 1. B. Within the next 30 months after the effective date of this AD, replace the following 14 lower wing surface fuel tank access doors, seven on the left wing (Nos. 546AB, 546BB, 552AB, 552BB, 552CB, 552DB, and 552EB), and seven on the right wing (Nos. 646AB, 646BB, 652AB, 652BB, 652CB, 652DB, and 652EB), with doors having impact resistance equivalent to that of 2024-T3 aluminum 0.140-inch thick, as approved by the Manager, Seattle Aircraft Certification Office, FAA, Northwest Mountain Region, in accordance with the procedures described in Section 28-11-02 of the Boeing Model 747 Maintenance Manual. The replacement doors must also be fire resistant, as defined in the Federal Aviation Regulations, Part 1. C. 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, Seattle Aircraft Certification Office, 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, Seattle Aircraft Certification Office. D. 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 Airplanes, P.O. Box 3707, Seattle, Washington 98124. These documents may be examined at FAA, Northwest Mountain Region, Transport Airplane Directorate, 17900 Pacific Highway South, Seattle, Washington, or at the Seattle Aircraft Certification Office, 9010 East Marginal Way South, Seattle, Washington. This amendment (39-6230, AD 89-12-10) becomes effective on July 8, 1989. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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