FADEC & the CFI

Presented to:

By:

Date: May 5, 2007

Federal AviationAdministrationFADEC

& the CFI

New regulatory guidance

CFI Workshop

Bob Jex, ASI, North Florida FSDO

Federal AviationAdministration

2FADEC & the CFIMay 5, 2007

Overview

• Explanation of term “FADEC”• New regulatory guidance: Notice N 8000.331

– New definition of “Complex” Airplane!

• Multi-Engine piston aircraft with FADEC• Practical Tests: Single-Engine ops• Your Questions



What is “FADEC”?

F – Full A – Authority D – Digital E – Engine C – Control

In other words:

Computerized engine control!



FAA Notice N 8000.331• New regulatory guidance, eff. Nov 2006• Redefines “Complex Airplane” two ways

– If FADEC installed:

Retractable Landing Gear

+ Flaps

+ FADEC

= Complex Airplane!– If FADEC not installed:

• Use conventional definition!

• Most significance for light piston twins



New Piston Twin with FADEC• Diamond Aircraft

DA42 “Twin Star”

– TAA– Diesel engines (typ)

• LE critical!– FADEC– G1000 Avionics– Carbon fiber– Training role

Mfr. website: www.diamondaircraft.com



DA42 trivia:• Chandelles, Lazy-8’s approved!

– FSDO does not recommend these maneuvers.

• Grass runways approved!• “Dynamic” stalls not approved• Vlo (extension & extended) = Vne = 194• Powerplant instrumentation:

– Percent load, 0 – 100% and – RPM

• Loss of electrical power to FADEC unit(s)• Again: Critical Left engine!



DA42 “Twin Star” Cockpit

Engine M. Sw’s



Practical Tests: Single-engine ops in FADEC piston twins



FADEC Single-engine operations

• Troubleshooting steps are minimal– Fewer things to check: focus is back on flying– ECU doing most of the work. New Term: “ECU Swap”– Autofeather provision

• Zero-Thrust settings– Not published (yet) for DA42



Intentional feathering

• Retard thrust• Eng M. Sw. Off

Prop feathers!

• Restart:– Reverse steps!– Diesels use compression for ignition!



Your Questions…?

FADEC & the CFI

Documents

Transcript of FADEC & the CFI