We then began an en route descent
on radar vectors for an approach to runway 08 at Albuquerque (KABQ).
Passengers tend to be happier with lower en route descent
rates in unpressurized airplanes, so 500 FPM was a set target at 120 knots.
The sortie was uneventful until the en route descent
into Dyess AFB for recovery.
The run-of-the-mill glideslope is three degrees and, honestly, a comfortable en route descent
is the same.
The en route descent
was from FL270, 50 miles northwest of Davis Monthan, in an FA-18C, at night, in what was supposed to be good weather--except for an unforecasted thunderstorm brewing 30 miles southwest of the field.
Round that down to three and you have a useful trick for en route descent