767 Fuel Jettison Load Shed
According to one informative 767 website....
"Electrical load shedding will occur during fuel jettison :
- Equipment cooling fans (equipment cooling system reverts to OVRD mode)
- Bulk cargo vent fan
- Selected lights (landing lights, wing illumination, logo lights, galley lights)
- Window heat 3L & 3R
- PAX entertainment equipment
- Water line heaters"
Discussing this with fellow engineers and pilots from various airlines, no-one has been able to confirm that Water Line Heaters and external lights are affected by fuel jettison.
Would someone be able to independently confirm this?
Our schematic diagrams show the landing lights and water heaters may share primary circuit breakers, but relays exclude them from being affected by Fuel Jettison Load Shed.
Thanks in advance.
Rgds.
NSEU.
Boeing wiring schematic ref: 24-51-08... and many others.