Parallel runways and touch and go's get all wrapped in this to. Heres the whole shebang.
3−9−7. WAKE TURBULENCE SEPARATION
FOR INTERSECTION DEPARTURES
a. Apply the following wake turbulence criteria
for intersection departures:
1. Separate a small aircraft weighing 12,500 lbs.
or less taking off from an intersection on the same
runway (same or opposite direction takeoff) behind a
departing small aircraft weighing more than 12,500
lbs. by ensuring that the aircraft does not start takeoff
roll until at least 3 minutes after the preceding aircraft
has taken off.
2. Separate a small aircraft taking off from an
intersection on the same runway (same or opposite
direction takeoff) behind a departing large aircraft
(except B757) by ensuring that the aircraft does not
start takeoff roll until at least 3 minutes after the
preceding aircraft has taken off.
3. Separate a small aircraft taking off from an
intersection on the same runway (same or opposite
direction takeoff) behind a departing B757 by
ensuring that the aircraft does not start takeoff roll
until at least 3 minutes after the preceding aircraft has
taken off.
4. Separate aircraft departing from an
intersection on the same runway (same or opposite
direction takeoff), parallel runways separated by less
than 2,500 feet, and parallel runways separated by
less than 2,500 feet with the runway thresholds offset
by 500 feet or more, by ensuring that the aircraft does
not start take-off roll until the following intervals
exist after the preceding aircraft has taken off:
NOTE−
Apply Para 3-9-6, Same Runway Separation, subparagraph
f to parallel runways separated by less than 2,500
feet with runway thresholds offset by less than 500 feet.
(a) Heavy, large, or small behind super - 4
minutes.
(b) Heavy, large, or small behind heavy - 3
minutes.
5. Inform aircraft when it is necessary to hold in
order to provide the required time interval.
PHRASEOLOGY−
HOLD FOR WAKE TURBULENCE.
NOTE−
Aircraft conducting touch-and-go and stop-and-go
operations are considered to be departing from an
intersection.
REFERENCE−
FAAO JO 7110.65, Para 3−8−2, Touch−and−Go or Stop−and−Go or
Low Approach.
b. The time interval is not required when:
1. A pilot has initiated a request to deviate from
the time intervals contained in subparagraph a1 or a2.
NOTE−
A request for takeoff does not initiate a waiver request; the
request for takeoff must be accomplished by a request to
deviate from the time interval.
2. USA NOT APPLICABLE. The intersection
is 500 feet or less from the departure point of the
preceding aircraft and both aircraft are taking off in
the same direction.
3. Successive touch-and-go or stop-and-go
operations are conducted with any aircraft following
an aircraft in the pattern that requires wake turbulence
separation, or an aircraft departing the same runway
that requires wake turbulence separation in
accordance with subparagraphs a1, a2, a3, or a4
(except for super aircraft), provided the pilot is
maintaining visual separation/spacing behind the
preceding aircraft. Issue a wake turbulence
cautionary advisory and the position of the larger
aircraft.
NOTE−
Not authorized with a Super as the lead or departure
aircraft.
REFERENCE−
FAAO JO 7110.65, Para 5-5-4, Minima, Subparagraph g.
FAAO JO 7110.65, Para 7-2-1, Visual Separation
4. If action is initiated to reduce the separation
between successive touch-and-go or stop-and-go
operations, apply the appropriate separation contained
in subparagraph a1, a2, a3, or a4.
c. When applying the provision of subpara b:
1. Issue a wake turbulence advisory before
clearing the aircraft for takeoff.
2. Do not clear the intersection departure for an
immediate takeoff.
3. Issue a clearance to permit the trailing aircraft
to deviate from course enough to avoid the flight path
of the preceding aircraft when applying subpara b1 or
b2.
4. Separation requirements in accordance with
Para 3−9−6, Same Runway Separation, must also
apply.
REFERENCE−
FAAO JO 7110.65, Para 3−9−6, Same Runway Separation.
