Extended Diversion Time Operations: 7 Critical EDTO Rules

Airbus A350 twin-engine long-haul airliner in flight, EDTO operations

Extended Diversion Time Operations allow approved aircraft to operate farther from suitable en-route alternates. Learn how EDTO evolved from ETOPS and how diversion planning, aircraft reliability, fuel, systems, maintenance, and crew decisions protect twin-engine operations.

What Is Asymmetric Thrust in Twin Engine Aircraft?

Asymmetric Thrust in Twin Engine Aircraft

What happens when one engine produces more thrust than the other? Pilots explain asymmetric thrust in twin engine aircraft, from the first yaw after an engine failure to VMC, rudder control, zero sideslip, and securing a failed engine.

Multi-Engine Add-On Rating

Piper PA-44 Seminole multi-engine training aircraft on approach

A Multi-Engine Add-On Rating allows qualified airplane pilots to expand into twin engine aircraft. Learn the FAA requirements, training process, VMC, asymmetric flight, engine-out performance, and what to expect on the practical test.

My First Twin Engine Flight: Flying the Piper Seminole

First Twin Engine Flight in a Piper PA-44 Seminole

Every pilot remembers certain flights more clearly than others: the first solo, the first cross-country, the first time flying a new aircraft type. For me, another memorable milestone was my first twin engine flight. While I was in Hungary completing FI(A) training, I had the opportunity to fly a Piper PA-44 Seminole at the local […]

Power loss related accidents involving twin-engine aircraft

Twin Engine Power Loss Accidents

Twin Engine Power Loss Accidents can develop very differently depending on whether the aircraft remains controllable after losing power. Learn why asymmetric thrust, VMC, degraded climb performance, aircraft configuration, and pilot decision-making can determine whether an engine failure ends in a controlled landing or loss of control.

Extended-range Twin-engine Operations

Extended-Range Twin-Engine Operations ETOPS aircraft

Extended-Range Twin-Engine Operations allow turbine-powered twins to operate routes far from suitable diversion airports. Learn how ETOPS planning manages engine failures, depressurization, critical fuel, alternates, and long-range diversion risk.

How Elevation and Weight Affect Takeoff Performance

Twin Engine Takeoff Performance

Twin Engine Takeoff Performance depends heavily on aircraft weight, airport elevation, temperature, runway length, and one-engine-inoperative capability. Learn how density altitude changes acceleration, climb performance, V-speeds, and safe takeoff limits.