Aeronautical Information Manual (AIM), page 214

Index   213 -- Page 214 -- 215


d. An aircraft is expected to taxi to (but not onto)
the end of the assigned runway unless prior approval
for an intersection departure is received from ground

e. Pilots should state their position on the airport
when calling the tower for takeoff from a runway

Cleveland Tower, Apache Three Seven Two Two Papa, at
the intersection of taxiway Oscar and runway two three
right, ready for departure.

f. Controllers are required to separate small
aircraft that are departing from an intersection on the
same runway (same or opposite direction) behind a
large nonheavy aircraft (except B757), by ensuring
that at least a 3-minute interval exists between the
time the preceding large aircraft has taken off and the
succeeding small aircraft begins takeoff roll. The
3-minute separation requirement will also be applied
to small aircraft with a maximum certificated takeoff
weight of 12,500 pounds or less departing behind a
small aircraft with a maximum certificated takeoff
weight of more than 12,500 pounds. To inform the
pilot of the required 3-minute hold, the controller will
state, "Hold for wake turbulence." If after consider-
ing wake turbulence hazards, the pilot feels that a
lesser time interval is appropriate, the pilot may
request a waiver to the 3-minute interval. To initiate
such a request, simply say "Request waiver to
3-minute interval" or a similar statement. Controllers
may then issue a takeoff clearance if other traffic
permits, since the pilot has accepted the responsibility
for wake turbulence separation.

g. The 3-minute interval is not required when 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. Controllers may
permit the small aircraft to alter course after takeoff
to avoid the flight path of the preceding departure.

h. A 4-minute interval is mandatory for small,
large, and heavy aircraft behind a super aircraft. The
3-minute interval is mandatory behind a heavy
aircraft in all cases, and for small aircraft behind a


4-3-11. Pilot Responsibilities When
Conducting Land and Hold Short
Operations (LAHSO)
a. LAHSO is an acronym for "Land and Hold
Short Operations." These operations include landing
and holding short of an intersecting runway, an
intersecting taxiway, or some other designated
point on a runway other than an intersecting runway
or taxiway. (See FIG 4-3-7, FIG 4-3-8,
FIG 4-3-9.)
b. Pilot Responsibilities and Basic Procedures.

1. LAHSO is an air traffic control procedure that
requires pilot participation to balance the needs for
increased airport capacity and system efficiency,
consistent with safety. This procedure can be done
safely provided pilots and controllers are knowl-
edgeable and understand their responsibilities. The
following paragraphs outline specific pilot/operator
responsibilities when conducting LAHSO.
2. At controlled airports, air traffic may clear a
pilot to land and hold short. Pilots may accept such a
clearance provided that the pilot-in-command
determines that the aircraft can safely land and stop
within the Available Landing Distance (ALD). ALD
data are published in the special notices section of the
Chart Supplement U.S. and in the U.S. Terminal
Procedures Publications. Controllers will also
provide ALD data upon request. Student pilots or
pilots not familiar with LAHSO should not
participate in the program.
3. The pilot-in-command has the final
authority to accept or decline any land and hold
short clearance. The safety and operation of the
aircraft remain the responsibility of the pilot.
Pilots are expected to decline a LAHSO clearance
if they determine it will compromise safety.
4. To conduct LAHSO, pilots should become
familiar with all available information concerning
LAHSO at their destination airport. Pilots should
have, readily available, the published ALD and
runway slope information for all LAHSO runway
combinations at each airport of intended landing.
Additionally, knowledge about landing performance
data permits the pilot to readily determine that the
ALD for the assigned runway is sufficient for safe
LAHSO. As part of a pilot's preflight planning
process, pilots should determine if their destination
airport has LAHSO. If so, their preflight planning

4-3-14 Airport Operations

Page 214 of the Aeronautical Information Manual (AIM.pdf)
AIM: Official Guide to Basic Flight Information and ATC Procedures

Index   213 -- Page 214 -- 215