Minimum Fuel Advisory; Emergency Fuel; Descent - Eclipse Aviation Eclipse 500 Flight Manual

Table of Contents

Advertisement

Continually verify that the projected arrival fuel matches minimum requirements. If
not, use actual cruise performance to fly to a suitable alternate.
Monitor all available sources for enroute and arrival weather. Be proactive with
ATC if re-routing or divert is a possibility. Have an answer, other than "standby", if
ATC asks for your intentions.

Minimum fuel advisory

If the fuel supply becomes such that no unusual delay can be accepted at the
destination, the pilot should advise the ATC controller, "Minimum fuel". Doing so is
not declaring an emergency and does not guarantee special handling but it alerts
the controller to avoid delays, if possible. It is always possible that another aircraft
may have an emergency and requires ATC priority handling and delay is
unavoidable. For the Eclipse 500, declare minimum fuel if it is determined any
time during the flight that you will land with less than 350 pounds.
The prudent pilot, having planned properly and monitored fuel burn performance
en route should not find him or herself in this situation, even if that means landing
short of the intended destination.

Emergency Fuel

If the fuel supply becomes such that absolutely no delay can be accepted, do not
hesitate to declare "emergency fuel". Doing so is declaring an emergency and you
will receive immediate priority for landing. For the Eclipse 500, declare emergency
fuel if it is determined at anytime during the flight that you will land with less than
250 pounds.

Descent

The key to an efficient descent is "plan ahead". The FMS can assist, but you must
have a solid grasp on the basic techniques for high altitude, high speed arrivals—
particularly into high density airports.
An accepted standard descent profile—what ATC will reasonably assume or
expect and what your passengers will appreciate—is a 3° flight path.
To
accomplish this, the pilot must know where to begin the descent and how fast (in
feet per minute) to descend. The top of descent (TOD), or distance required to
descend, is computed by dividing the altitude to lose by 300 (or divide flight levels
by 3). For example: FL 350 to 8,000'—a descent of 27,000'—would require 90
nautical miles.
Once the distance to descend is known, the rate of descent must then be
computed and updated to stay on the descent profile. The descent rate can be
computed by multiplying miles per minute (groundspeed) by the flight path, times
100. If you are at 300 knots groundspeed (5 miles per minute) and you fly a 3°
flight path, the descent rate would be 1500 feet per minute. The rule of thumb for
58

Hide quick links:

Advertisement

Table of Contents
loading

Table of Contents