# AD 90-11-06: Fuel Valve Bonding Wire - Type: Airworthiness directive - Status: Current - Products: Boeing 747-400 Series - Effective: June 6, 1990 - Superseded by: Nothing supersedes this AD - Product type: Aircraft, Large airplane - Amendment: 39-6606 - Docket: 90-NM-77-AD - Registered aircraft: 38 may be affected, by airframe or engine model (OpenAirDocs) - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/CC4CECAF1947BD85862569600048606D.0001 - DRS record last changed: May 30, 2024 - Page: https://openairdocs.org/ad/90-11-06 ## The airworthiness directive 90-11-06 BOEING: Amendment 39-6606. Docket No. 90-NM-77-AD. Applicability: Model 747-400 series airplanes, equipped with Pratt and Whitney PW4000 series engines or Rolls Royce RB211-524 series engines, identified in Boeing Alert Service Bulletin 747-28A2143, dated April 19, 1990, certificated in any category. Compliance: Required as indicated, unless previously accomplished. To prevent inability to fully open and close the outboard engine fuel shutoff valve, accomplish the following: A. Within the next 30 days after the effective date of this AD, replace the outboard engine fuel shutoff valve actuator bonding wire in accordance with Boeing Alert Service Bulletin 747-28A2143, dated April 19, 1990. B. Within 10 days after the completion of the modification required by paragraph A., above, report all findings of wires longer than six inches to the Manager, Seattle Manufacturing Inspection District Office, 7300 Perimeter Road South, Seattle, Washington 98108. Reports shall include the serial number of the affected airplanes and identify positions of valves found with long straps. 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 information from the manufacturer may obtain copies upon request to Boeing Commercial Airplanes, P.O. Box 3707, Seattle, Washington 98124. This information may be examined at the FAA, Northwest Mountain Region, Transport Airplane Directorate, 17900 Pacific Highway South, Seattle, Washington, or Seattle Aircraft Certification Office, 9010 East Marginal Way South, Seattle, Washington. This amendment (39-6606, AD 90-11-06) becomes effective on June 6, 1990. ## Affected data sheets (1) (OpenAirDocs) The type certificate data sheets whose models the AD names. - [TCDS A20WE](https://openairdocs.org/tcds/A20WE): The Boeing Company; names 1 of 14 models: 747-400 Series ## Registered aircraft it may apply to (OpenAirDocs) Matched by airframe and engine model; the AD's applicability may narrow it by serial number, part number or equipment. - Aircraft: 38 (38 by airframe model, 0 by engine model) - Makers: Boeing 38 Models with the most aircraft: - [Boeing 747-446](https://openairdocs.org/model/boeing-747-446): 10 aircraft (airframe model) - [Boeing 747-422](https://openairdocs.org/model/boeing-747-422): 8 aircraft (airframe model) - [Boeing 747-412](https://openairdocs.org/model/boeing-747-412): 5 aircraft (airframe model) - [Boeing 747-409](https://openairdocs.org/model/boeing-747-409): 4 aircraft (airframe model) - [Boeing 747-481](https://openairdocs.org/model/boeing-747-481): 3 aircraft (airframe model) - [Boeing 747-443](https://openairdocs.org/model/boeing-747-443): 2 aircraft (airframe model) - [Boeing 747-438](https://openairdocs.org/model/boeing-747-438): 2 aircraft (airframe model) - [Boeing 747-428](https://openairdocs.org/model/boeing-747-428): 2 aircraft (airframe model) - [Boeing 747-400](https://openairdocs.org/model/boeing-747-400): 1 aircraft (airframe model) - [Boeing 747-451](https://openairdocs.org/model/boeing-747-451): 1 aircraft (airframe model) All 10 models: https://openairdocs.org/ad/90-11-06/models.md Every aircraft: https://openairdocs.org/ad/90-11-06/aircraft.md Its text cites no advisory circulars or STCs. --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.