ACFT Type:A319,A320,A321 Operating Co:BA
Descent from FL 240 to FL 100.
Ideal…. IAS300-320 kts: ROD:A/R a rough guide would be 5* the ground speed(more if high lss if low on the profile which we calculate as 3* distance to landing
Acceptable… IASmin clean to max (220-320ish kts): ROD: very wide range here, 6000 ft/min is poss esp for a short time
Notes…..
Descent from FL 100 to base 15 – 20 NM.
Ideal…. IAS:would generally like to keep speed up here say 300, but need to start slowing down at LEAST with 15 miles to go ROD: A/R
Acceptable… IASWe can slow to final App speed if required as low as 125 kts, and up to 300 kts: ROD:A/R
Notes…..wrt to ROD the notes about distance to go and ROD alwyas apply when calculating our progress relative to the ideal 3 degree profile
Base to 10NM.
Ideal…. IAS:180-210kts ROD:maintiaining the glide (5*GS)
Acceptable… IASVapp to 210: ROD:maintain glide
Notes…..
10NM to 4 – 5 NM.
Ideal…. IAS: 160 kts
Acceptable… IAS: unable to keep any more than 160 really
Notes…..
Final Approach
Ideal…. IAS:at 4 miles have to reduce speed to achieve stable app
Acceptable… IAS:Vapp min
Notes….. Wind plays a major factor, a tailwind will reduce all these speeds as a higher GS means we have to have a higher VS to stay on the profile (5*GS remember). A healthy headwind will help us altough I doubt most pilots would increace the maximums I put above. Also as often said to us on these pages by ATC, why not ask us? then everybody is on the same page