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TEO-540-A1A Engine Installation and Operation Manual
Step 2. Supply Interface Items
For engine installation, the airframe manufacturer must supply the following items:
Required for initial engine installation:
• Correctly-sized hose for the fuel pump supply and fuel pump vent line
• Correctly-sized fuel return line (from fuel regulator adapter manifold assembly)
• Airframe fuel pump (fuel pump independently controlled by a circuit breaker with access by
the flight crew for fire and emergency procedures)
• Auxiliary fuel pump output wired to a three-position switch to drive a relay that controls the
airframe boost pump
• Airframe fuel pump switch with ON/OFF/AUTO positions
• Independent Fuel Shut-Off Valve (to meet engine shutdown requirements)
• 10-micron fuel filter (with a bypass)
• Air cleaner
• Oil cooler and appropriate oil hoses
• Bonded rubber mounts
• Hardwired lights to display warnings and cautions from the system
o No Take-Off (NTO) Primary annunciator
o NTO Secondary annunciator
o Time-Limited Operation (TLO) annunciator
o Fault Found (FFL) annunciator
• Pre-Flight Test (PFT) pushbutton (pushbutton with illumination capability or pushbutton with
separate illumination)
• Ignition (dual pole single throw) switches
• Aircraft battery used as an EECS backup
• Starter wiring and controls
• Two ground straps from the ground lugs for the ECU - refer to "Step 11. Attach Ground
Straps" in the Engine Installation chapter
• Two ground straps for the Power Box
• Airframe engine mount ground straps
• Three low impedance ground straps from the engine case to the engine mounting frame
NOTICE: Mounting the ECU to the Power Box requires four 1/4-20 bolts with a maximum
length of 1/2 inch.
• A physical location for the mount of the Power Box and the ECU
• A connection point to attach the wiring harness to the airframe
• Airframe mate to the four-pin plug on the wiring harness can be a wall mount, cable
connection, box mount, or jam nut receptacle
• 37-pin connector interface to the airframe engine wiring harness
• Communications interface to receive EECS instrumentation data
• A propeller.
© 2018 Avco Corporation. All Rights Reserved
October 2018
Requirements for Engine Installation
Page 31
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