View Full Version : Enroute Min ROD&ROC

21st Sep 2007, 16:06
Is there any minimum ROD & ROC requirement for enroute phase? And if it is, in what document it is stated?

Check Airman
21st Sep 2007, 16:55
It's my understanding that ATC expects at least 500fpm unless otherwise advised.

22nd Sep 2007, 09:05
Different rules for different countries.
500 fpm in the UK.

A Very Civil Pilot
22nd Sep 2007, 09:24
I beleive in an airway it is 1000fpm (no idea of a reference).

Usually set >500fpm, as your TCAS return may not indicate a climb or descent if you are at 500fpm.

22nd Sep 2007, 17:40
In the UK the relevant information is published in the ENR section of the AIP and says this:

2.2 Maximum Rates of Climb and Descent

2.2.1 In order to ensure the credible interaction of Airborne Collision Avoidance Systems and ground based safety nets, other than aircraft in emergency and certain specific conditions for military aircraft (as detailed in Military AIP and JSP552), all aircraft when operating under normal circumstances, when inside Controlled Airspace within the London and Scottish FIRs/UIRs should not operate with a climb or descent rate exceeding 8000 ft per minute. Aircraft when first approaching a cleared flight level and/or when changing flight level in RVSM airspace should ensure that the vertical closure speed is not excessive. It is considered that, with about 1500 ft to go to a cleared level, vertical speed should be reduced to a maximum of 1500 ft per minute and ideally to between 1000 ft per minute and 500 ft per minute. Pilots should ensure that the aeroplane neither undershoots nor overshoots the cleared level by more than 150 ft, manually overriding if necessary.

2.3 Minimum Rates of Climb and Descent

2.3.1 In order to ensure that controllers can accurately predict flight profiles to maintain standard vertical separation between aircraft, pilots of aircraft commencing a climb or descent in accordance with an ATC Clearance should inform the controller if they anticipate that their rate of climb or descent during the level change will be less than 500 ft per minute, or if at any time during such a climb or descent their vertical speed is, in fact, less than 500 ft per minute.

2.3.2 This requirement applies to both the en-route phase of flight and to terminal holding above Transition Altitude.

Note: This is not a prohibition on the use of rates of climb or descent of less than 500 ft per minute where necessary to comply with other operating requirements.

The information is repeated in my company's Jeppesen Text manual.
Maybe check similar sections in other country's AIPs...

galaxy flyer
24th Sep 2007, 03:02
If you are talking about minimum ROC to ensure obstacle clearance during ops at the Minimum Enroute Altitude. TERPS has the answer for US operators. I recall something like 150 ft/nm below 6000 ft MSL, 120ft/nm between 6000 and 10,000 MSL and 100 ft/nm above that.


24th Sep 2007, 10:34
Thank you for the replies! I was told that this is stated in PANS OPS min and max ROC & ROD enroute) but i couldn't find anything so far.

25th Sep 2007, 18:29
Usually set >500fpm, as your TCAS return may not indicate a climb or descent if you are at 500fpm.

Well it won't show the little arrow but I suppose you would still see the vertical displacement figure ticking along.