Is an APU required for ETOPS?
In-flight APU starts need not be performed on ETOPS flights (the APU must be in the ETOPS configuration in accordance with the applicable configuration and maintenance procedures (CMP) document, in order for credit to be allowed.
What is an ETOPS entry point?
1.3 ETOPS Entry Point means the first point on the route of an ETOPS flight, determined using a one-engine inoperative cruise speed under standard conditions in still air, that is more than 180 minutes from an adequate airport. G135.
How does the APU start?
The APU can be started utilizing only the aircraft battery(s) and, once running, will provide electrical power to aircraft systems as well as bleed air for air conditioning and for engine start.
How does an ETOPS flight plan look like?
An ETOPS flight plan may look something like this: Let’s say the aircraft’s ground speed (with one engine inoperative!) is 450 knots. By drawing circles with radius 450nm around alternate airports, we can obtain areas which the flight must stay within. The flight path always stays inside one of these circles.
What can an APU be used for in flight?
Using the APU in flight The APU can also be used in-flight, although it usually is inactive for the flight duration. In the event of engine failure, it can be used for either electrical power or bleed air to re-start the engines. The landing of US Airways Flight 1549 in the Hudson River is one such example.
What are the requirements for ETOPS and polar operations?
Appendix P to Part 121 – Requirements for ETOPS and Polar Operations The FAA approves ETOPS in accordance with the requirements and limitations in this appendix. Section I. ETOPS Approvals: Airplanes with Two engines. (a) Propulsion system reliability for ETOPS.
What are the FAA requirements for ETOPS approval?
(1) Before the FAA grants ETOPS operational approval, the operator must be able to demonstrate the ability to achieve and maintain the level of propulsion system reliability, if any, that is required by § 21.4 (b) (2) of this chapter for the ETOPS-approved airplane-engine combination to be used.