AD 88-21-03 R1
final rule
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Airbus | The Boeing Company | A300 B2-1A | Airworthiness Directives; AIRBUS INDUSTRIE AND BOEING Airbus Model A300 and A310-200 and Boeing Models 737-200, 737-300, 757-200, 767-200, and 767-300 Series Airplanes |
| aircraft | Airbus | The Boeing Company | A300 B2-1C | Airworthiness Directives; AIRBUS INDUSTRIE AND BOEING Airbus Model A300 and A310-200 and Boeing Models 737-200, 737-300, 757-200, 767-200, and 767-300 Series Airplanes |
| aircraft | Airbus | The Boeing Company | A300 B2-203 | Airworthiness Directives; AIRBUS INDUSTRIE AND BOEING Airbus Model A300 and A310-200 and Boeing Models 737-200, 737-300, 757-200, 767-200, and 767-300 Series Airplanes |
| aircraft | Airbus | The Boeing Company | A300 B2K-3C | Airworthiness Directives; AIRBUS INDUSTRIE AND BOEING Airbus Model A300 and A310-200 and Boeing Models 737-200, 737-300, 757-200, 767-200, and 767-300 Series Airplanes |
| aircraft | Airbus | The Boeing Company | A300 B4-103 | Airworthiness Directives; AIRBUS INDUSTRIE AND BOEING Airbus Model A300 and A310-200 and Boeing Models 737-200, 737-300, 757-200, 767-200, and 767-300 Series Airplanes |
| aircraft | Airbus | The Boeing Company | A300 B4-203 | Airworthiness Directives; AIRBUS INDUSTRIE AND BOEING Airbus Model A300 and A310-200 and Boeing Models 737-200, 737-300, 757-200, 767-200, and 767-300 Series Airplanes |
| aircraft | Airbus | The Boeing Company | A300 B4-2C | Airworthiness Directives; AIRBUS INDUSTRIE AND BOEING Airbus Model A300 and A310-200 and Boeing Models 737-200, 737-300, 757-200, 767-200, and 767-300 Series Airplanes |
| aircraft | Airbus | The Boeing Company | A310-203 | Airworthiness Directives; AIRBUS INDUSTRIE AND BOEING Airbus Model A300 and A310-200 and Boeing Models 737-200, 737-300, 757-200, 767-200, and 767-300 Series Airplanes |
| aircraft | Airbus | The Boeing Company | A310-221 | Airworthiness Directives; AIRBUS INDUSTRIE AND BOEING Airbus Model A300 and A310-200 and Boeing Models 737-200, 737-300, 757-200, 767-200, and 767-300 Series Airplanes |
| aircraft | Airbus | The Boeing Company | A310-222 | Airworthiness Directives; AIRBUS INDUSTRIE AND BOEING Airbus Model A300 and A310-200 and Boeing Models 737-200, 737-300, 757-200, 767-200, and 767-300 Series Airplanes |
| aircraft | Airbus | The Boeing Company | 737-200 Series | Airworthiness Directives; AIRBUS INDUSTRIE AND BOEING Airbus Model A300 and A310-200 and Boeing Models 737-200, 737-300, 757-200, 767-200, and 767-300 Series Airplanes |
| aircraft | Airbus | The Boeing Company | 737-300 Series | Airworthiness Directives; AIRBUS INDUSTRIE AND BOEING Airbus Model A300 and A310-200 and Boeing Models 737-200, 737-300, 757-200, 767-200, and 767-300 Series Airplanes |
| aircraft | Airbus | The Boeing Company | 757-200 Series | Airworthiness Directives; AIRBUS INDUSTRIE AND BOEING Airbus Model A300 and A310-200 and Boeing Models 737-200, 737-300, 757-200, 767-200, and 767-300 Series Airplanes |
| aircraft | Airbus | The Boeing Company | 767-200 Series | Airworthiness Directives; AIRBUS INDUSTRIE AND BOEING Airbus Model A300 and A310-200 and Boeing Models 737-200, 737-300, 757-200, 767-200, and 767-300 Series Airplanes |
| aircraft | Airbus | The Boeing Company | 767-300 Series | Airworthiness Directives; AIRBUS INDUSTRIE AND BOEING Airbus Model A300 and A310-200 and Boeing Models 737-200, 737-300, 757-200, 767-200, and 767-300 Series Airplanes |
Unsafe Condition
Failure of the fuel crossfeed valve during a single engine diversion on an extended range flight could result in inability to stay within the airplane lateral imbalance limit or fuel starvation in the operating engine before reaching the diversion airport.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Revise the LIMITATIONS SECTION of the FAA-approved Airplane Flight Manual (AFM) or Flight Manual Appendix by adding instructions for an operational check of the fuel crossfeed valve during the last hour of cruise flight during each extended range operation. Repair or replace any fuel crossfeed valve system component not exhibiting proper operation prior to next flight.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
within 30 days after the effective date of the AD, unless previously accomplished
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Airbus Model A300 and A310-200 series airplanes, and Boeing Models 737-200, 737-300, 757-200, 767-200, and 767-300 series airplanes certificated for operations over routes farther than one hour flying time at normal one-engine inoperative cruise speed from an adequate airport in extended range operations.
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Fuel Crossfeed Valve
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_88-21-03_R.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 88-21-03 R1 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; AIRBUS INDUSTRIE AND BOEING Airbus Model A300 and A310-200 and Boeing Mode...Show more Subject: Fuel Crossfeed Valve Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 11/18/1988 Make: Airbus | The Boeing Company Model: A300 B2-1A | A300 B2-1C | A300 B2-203 | A300 B2K-3C | A300 B4-103 | A300 B4-203 | A300 B4-2C | A310-...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: 88-21-03 R1 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-6077 AD NUMBER: 88-21-03 R1 SUBJECT HEADING: Airworthiness Directives; AIRBUS INDUSTRIE AND BOEING Airbus Model A300 and A310-200 and Boeing Models 737-200, 737-300, 757-200, 767-200, and 767-300 Series Airplanes ACTION: SUMMARY: DATES: Effective November 18, 1988. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 88-21-03 R1 AIRBUS INDUSTRIE AND BOEING: Amendment 39-6045 as amended by Amendment 39-6077. Applies to all Airbus Model A300 and A310-200 series airplanes, and Boeing Models 737-200, 737-300, 757-200, 767-200, and 767-300 series airplanes, certificated in any category, which are approved for operations over a route that contains a point farther than one hour flying time at the normal one-engine inoperative cruise speed (in still air) from an adequate airport in deviation from Section 121.161 of the Federal Aviation Regulations, referred to as "extended range," "EROP," or "ETOP" operations. Compliance required within 30 days after the effective date of the AD, unless previously accomplished. To prevent failure of the fuel crossfeed valve during a single engine diversion on an extended range flight, which could result in the inability of the airplane to stay within the airplane lateral imbalance limit or in fuel starvation in the operating engine before the airplane is able to reach the diversion airport, accomplish the following: A. Revise the LIMITATIONS SECTION of the FAA-approved Airplane Flight Manual (AFM) or Flight Manual Appendix, as appropriate, by adding the following instructions. This may be accomplished by inserting a copy of this AD in the AFM. Fuel Crossfeed Valve. Perform an operational check of the fuel crossfeed valve during the last hour of cruise flight during each extended range operation. Enter valve failure conditions resulting from the operational check in the airplane log. B. Repair or replace, prior to next flight, any fuel crossfeed valve system component not exhibiting proper operation. C. An alternate means of compliance or adjustment of the compliance time, which provides an acceptable level of safety and which has the concurrence of an FAA Principal Operations Inspector, 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 Operations Inspector (POI), who may add any comments and then send it to the Manager, Seattle Aircraft Certification Office. This amendment revises AD 88-21-03, Amendment 39-6045, effective October 24, 1988. This amendment, 39-6077, becomes effective November 18, 1988. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_88-21-03_R.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 88-21-03 R1 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; AIRBUS INDUSTRIE AND BOEING Airbus Model A300 and A310-200 and Boeing Mode...Show more Subject: Fuel Crossfeed Valve Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 11/18/1988 Make: Airbus | The Boeing Company Model: A300 B2-1A | A300 B2-1C | A300 B2-203 | A300 B2K-3C | A300 B4-103 | A300 B4-203 | A300 B4-2C | A310-...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: 88-21-03 R1 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-6077 AD NUMBER: 88-21-03 R1 SUBJECT HEADING: Airworthiness Directives; AIRBUS INDUSTRIE AND BOEING Airbus Model A300 and A310-200 and Boeing Models 737-200, 737-300, 757-200, 767-200, and 767-300 Series Airplanes ACTION: SUMMARY: DATES: Effective November 18, 1988. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 88-21-03 R1 AIRBUS INDUSTRIE AND BOEING: Amendment 39-6045 as amended by Amendment 39-6077. Applies to all Airbus Model A300 and A310-200 series airplanes, and Boeing Models 737-200, 737-300, 757-200, 767-200, and 767-300 series airplanes, certificated in any category, which are approved for operations over a route that contains a point farther than one hour flying time at the normal one-engine inoperative cruise speed (in still air) from an adequate airport in deviation from Section 121.161 of the Federal Aviation Regulations, referred to as "extended range," "EROP," or "ETOP" operations. Compliance required within 30 days after the effective date of the AD, unless previously accomplished. To prevent failure of the fuel crossfeed valve during a single engine diversion on an extended range flight, which could result in the inability of the airplane to stay within the airplane lateral imbalance limit or in fuel starvation in the operating engine before the airplane is able to reach the diversion airport, accomplish the following: A. Revise the LIMITATIONS SECTION of the FAA-approved Airplane Flight Manual (AFM) or Flight Manual Appendix, as appropriate, by adding the following instructions. This may be accomplished by inserting a copy of this AD in the AFM. Fuel Crossfeed Valve. Perform an operational check of the fuel crossfeed valve during the last hour of cruise flight during each extended range operation. Enter valve failure conditions resulting from the operational check in the airplane log. B. Repair or replace, prior to next flight, any fuel crossfeed valve system component not exhibiting proper operation. C. An alternate means of compliance or adjustment of the compliance time, which provides an acceptable level of safety and which has the concurrence of an FAA Principal Operations Inspector, 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 Operations Inspector (POI), who may add any comments and then send it to the Manager, Seattle Aircraft Certification Office. This amendment revises AD 88-21-03, Amendment 39-6045, effective October 24, 1988. This amendment, 39-6077, becomes effective November 18, 1988. 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.