Fuel - Water and Fuel Scavenge System - Operating Limitations / Modification
- Published
- Effective
- Deadline
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Affected operators must comply with the AD by November 14, 2019, either by applying the specified operating limitations or completing the required modifications and software updates. They should review Boeing service information and update the airplane flight manuals accordingly. Early compliance is permitted, and stakeholders should coordinate with the FAA for any alternative methods of compliance if needed.
Summary
Airworthiness Directive 2019-16-13 is a final rule issued by the Federal Aviation Administration affecting certain Boeing 777-200 and 777-300 series airplanes. It addresses issues with the water and fuel scavenge system that can cause trapped fuel and unavailable fuel reserves. The directive mandates operating limitations or modifications to the fuel scavenge and jettison systems, electrical wiring, and software installations to ensure safe operation.
What changed
This new airworthiness directive introduces requirements to incorporate operating limitations or to modify the water and fuel scavenge systems in the fuel tanks, modify the fuel jettison system, make electrical changes in the main equipment center, update wiring in certain panels, and install new software. It responds to reports of unreliable fuel scavenge system performance that could lead to fuel exhaustion during flight.
Why it matters
This directive is critical for aviation professionals because failure of the fuel scavenge system can trap up to 700 pounds of fuel, reducing available reserves and risking engine power loss. Operators and maintenance teams must ensure compliance to maintain fuel system reliability and flight safety. The AD also clarifies operational procedures and system alerts related to fuel scavenge failures.
More for Boeing 777
All 78- EASA AD US-2026-19-04Hydraulic Power - Alternating Current Motor Pump - InspectionOct 12, 2026
- EASA AD 2026-0190Engine Oil – Oil Pump – Operational ProhibitionOct 1, 2026
- EASA AD 2026-0173-EEngine Oil – Oil Pump – De-PairingSep 4, 2026
- EASA AD US-2026-15-02Fuel - Lightning Protection for Engine Fuel Feed System - InspectionsAug 31, 2026
- EASA AD US-2025-21-02Flight Controls - Non-Essential Gust Suppression Function - DisableDec 3, 2025
Get the next one by email
New ADs and bulletins for Boeing 777, summarized like this page, every Monday.