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a. Assign appropriate nondiscrete beacon codes
from the function codes specified in para 5-2-6,
Function Code Assignments.
b. Unless otherwise coordinated at the time of
handoff, make handoffs to other positions/sectors on
an appropriate nondiscrete function code.
REFERENCEFAAO
JO 7110.65, Para 5-2-4, Mixed Environment.
FAAO JO 7110.65, Para 5-2-9, VFR Code Assignments.
FAAO JO 7110.65, Para 5-3-3, Beacon Identification Methods.
JO 7110.65S 2/14/08
5-2-2 Beacon Systems
5-2-4. MIXED ENVIRONMENT
a. When discrete beacon code capability does not
exist in your area of responsibility, comply with the
procedures specified in para 5-2-3, Nondiscrete
Environment.
NOTEIn
a mixed code environment, a situation may exist where
a discrete‐equipped position/sector exchanges control of
aircraft with nondiscrete‐equipped facilities or vice versa.
b. When discrete beacon code capability exists in
your area of responsibility:
1. Comply with the procedures specified in
para5-2-2, Discrete Environment, and
2. Unless otherwise coordinated at the time of
handoff, assign aircraft that will enter the area of
responsibility of a nondiscrete‐equipped position/
sector an appropriate nondiscrete function code from
the codes specified in para 5-2-6, Function Code
Assignments, prior to initiating a handoff.
REFERENCEFAAO
JO 7110.65, Para 4-2-8, IFR‐VFR and VFR‐IFR Flights.
FAAO JO 7110.65, Para 5-2-9, VFR Code Assignments.
FAAO JO 7110.65, Para 5-3-3, Beacon Identification Methods.
5-2-5. RADAR BEACON CODE CHANGES
Unless otherwise specified in a directive or a letter of
agreement or coordinated at the time of handoff, do
not request an aircraft to change from the code it was
squawking in the transferring facility's area until the
aircraft is within your area of responsibility.
REFERENCEFAAO
JO 7110.65, Para 4-2-8, IFR‐VFR and VFR‐IFR Flights.
FAAO JO 7110.65, Para 5-3-3, Beacon Identification Methods.
5-2-6. FUNCTION CODE ASSIGNMENTS
Unless otherwise specified by a directive or a letter of
agreement, make nondiscrete code assignments from
the following categories:
a. Assign codes to departing IFR aircraft as
follows:
1. Code 2000 to an aircraft which will climb to
FL240 or above or to an aircraft which will climb to
FL180 or above where the base of Class A airspace
and the base of the operating sector are at FL 180, and
for inter‐facility handoff the receiving sector is also
stratified at FL180. The en route code shall not be
assigned until the aircraft is established in the high
altitude sector.
2. Code 1100 to an aircraft which will remain
below FL 240 or below FL 180 as above.
3. For handoffs from terminal facilities when so
specified in a letter of agreement as follows:
(a) Within NBCAP airspace- Code 0100 to
Code 0400 inclusive or any other code authorized by
the appropriate service area office.
(b) Outside NBCAP airspace- Code 1000 or
one of the codes from 0100 to 0700 inclusive or any
other code authorized by the appropriate service area
office.
b. Assign codes to en route IFR aircraft as follows:
NOTE-
1. FL 180 may be used in lieu of FL 240 where the base of
Class A airspace and the base of the operating sector are
at FL 180, and for inter‐facility handoff the receiving
sector is also stratified at FL 180.
2. The provisions of subparas b2(b) and (c) may be
modified by facility directive or letter of agreement when
operational complexities or simplified sectorization
indicate. Letters of agreement are mandatory when the
operating sectors of two facilities are not stratified at
identical levels. The general concept of utilizing
Codes2100 through 2500 within Class A airspace should
be adhered to.
1. Aircraft operating below FL 240 or when
control is transferred to a controller whose area
includes the stratum involved.
(a) Code 1000 may be assigned to aircraft
changing altitudes.
(b) Code 1100 to an aircraft operating at an
assigned altitude below FL 240. Should an additional
code be operationally desirable, Code 1300 shall be
assigned.
2. Aircraft operating at or above FL 240 or when
control is transferred to a controller whose area
includes the stratum involved.
(a) Code 2300 may be assigned to aircraft
changing altitudes.
(b) Code 2100 to an aircraft operating at an
assigned altitude from FL 240 to FL 330 inclusive.
Should an additional code be operationally desirable,
Code 2200 shall be assigned.
(c) Code 2400 to an aircraft operating at an
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