The AMOC approval is for model 757-200 series airplanes converted to freighter by STC ST01529SE with the Simmons/Goodrich FQIS System installed.
Beaverton, OR., June 16, 2021 — Precision Aircraft Solutions received FAA AMOC approval on FQIS (Fuel Quantity Indicating System) modification. This modification increases separation from surrounding system wires from the FQIS processor to the center wing tank penetration. The entire length of the new FQIS wires will be sleeved with TFE tubing, to address areas where increased separation is not possible. Accomplishment of this service bulletin will help to prevent possible sources of ignition caused by hot shorts to surrounding wires. If this service bulletin is not done, a hot short to the FQIS wires outside the tank in combination with an in-tank wire/sensor fault to the structure, can become an ignition source inside the center wing tank.
An illustration is below:
Precision Aircraft Solutions specializes in the development of aircraft cargo conversions and special mission modifications, component and mod kit manufacturing, STC & AMOC certification, and continued airworthiness support. Precision earned its stripes designing, engineering, and developing the popular 757-200PCF STC which was awarded in 2005. By the end of 2021, the program will reach 145 757-200PCF redeliveries, converting the B757 from passenger service into air cargo freighter for industry-leading companies around the world.