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4 Answers

YKM gromo four departure Tampo transition

Asked by: 557 views Instrument Rating

YKM gromo four departure Tampo transition

Let's say I just departed YKM and i'm headed west towards gromo.

On this transition, there is a MEA on the segment from Gromo to Tampo of 8000. It seems near impossible for most aircraft to depart RW 27 or 22 and be at 8000 by Gromo. I'm just trying to verify when there is no MEA prior to gromo, how is this interpreted. Even though no mea prior to gromo on the climb out departure from YKM, is this a climb on route mea where even if i'm below 8000 at gromo, i could still continue west past gromo on R250 to Tampo? There is no MCA at gromo, so i do think even if i was below 8000(let's say 6000 msl), could i still go past gromo with that mea at 8000?

If there was an mea prior to gromo from the east, then i would not have this question because i do understand that if there is an mea on east of gromo, and as long as i start climbing from the mea on east side of gromo, then i know i can continue  west past gromo as long as i'm climbing.

Thanks.

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4 Answers



  1. CFI on Nov 21, 2016

    My interpretation is that if i meet the take off minimums for RW22 or 27 of 380fpnm to 6300, then i can go past Gromo, even if i’m below 8000. But i need to continue my climb to 8000 and i should climb at least 120 fpnm.

    I don’t see an mca at gromo, so that is what i’m basing my interpretation on.

    I also interpret that when i go from one segment across a fix to another segment of higher MEA, i can cross the fix at the lower MEA as long as i start climbing at the fix and eventually get to the higher MEA. But again this scenario at gromo has no mea on the east of gromo, so it’s a scenario i’m not sure about. Thanks.

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  2. Best Answer


    John D Collins on Nov 22, 2016

    You are mostly correct, but after climbing to 6300 feet at a minimum climb rate of 380 feet per NM, you would need to continue the climb to the MEA with at least a climb rate of 200 feet per NM.

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  3. CFI on Nov 22, 2016

    John, thanks. Where did you get the 200fpnm climb rate from 6300 to 8000?

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  4. Mark Kolber on Nov 23, 2016

    TERPS standard departure obstruction clearance climb gradient that applies in the absence of a higher one. Multiple FAA sources for that. You can start with AIM 5-2-8.

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