- Fri Apr 28, 2017 11:54 am
4−6−4. HOLDING INSTRUCTIONS
When issuing holding instructions, specify:
a. Direction of holding from the fix/waypoint.
b. Holding fix or waypoint.
The holding fix may be omitted if included at the beginning
of the transmission as the clearance limit.
c. Radial, course, bearing, track, azimuth, airway,
or route on which the aircraft is to hold.
d. Leg length in miles if DME or RNAV is to be
used. Specify leg length in minutes if the pilot
requests it or you consider it necessary.
e. Direction of holding pattern turns only if left
turns are to be made, the pilot requests it, or you
consider it necessary.
HOLD (direction) OF (fix/waypoint) ON (specified radial,
course, bearing, track, airway, azimuth(s), or route.)
If leg length is specified,
(number of minutes/miles) MINUTE/MILE LEG.
If direction of turn is specified,
So radial doesn't work for an RNAV fix like you mentioned, but track or course does, I'd just use one of those. That said, I've found that most pilots are actually able to fly published holds, especially if the holds are published on a STAR. So then it's just "Cleared to KOMMA, hold <direction> as published, expect further clearance...
I was working Boston Center during the large EDDF-KJFK group flight a few months ago, when N90 told me to start holding I had a stack of 10 aircraft from 12,000' all the way up to FL220 over CCC and another 4 or 5 holding over TRAIT, I think I had two who couldn't accept a hold and just got vectored over the ocean and one who flew right turns instead of left turns.