Section 2. Terms of Reference
1-2-1. WORD MEANINGS
As used in this order:
a. “Must” means a procedure is mandatory.
b. “Should” means a procedure is recommended.
c. “May” or “need not” means a procedure is
d. “Will” means futurity, not a requirement for
application of a procedure.
e. “Must not” means a procedure is prohibited.
f. Singular words include the plural.
g. Plural words include the singular.
h. “Aircraft” means the airframe, crew members,
i. “Altitude” means indicated altitude mean sea
level (MSL), flight level (FL), or both.
j. “Miles” means nautical miles unless otherwise
specified and means statute miles in conjunction with
k. “Time,” when used for ATC operational
activities, is the hour and the minute/s in Coordinated
Universal Time (UTC). Change to the next minute is
made at the minute plus 30 seconds, except time
checks are given to the nearest quarter minute. The
word “local” or the time zone equivalent must be
stated when local time is given during radio and
telephone communications. The term “ZULU” may
be used to denote UTC.
l. “Sector,” when used in conjunction with flight
service station (FSS) functions, means a specifically
described geographic area that is assigned a National
Airspace Data Interchange Network (NADIN)
m. “Tie-in facility,” as indicated in FAA Order
JO 7350.8, Location Identifiers, for the purposes of
this order, designates the responsible facility/sector
for sending/receiving flight plans, flight notification
messages, and performing search and rescue duties
for the listed location.
n. “Shared database” is a database within an FSS
operational system that is accessible by specialists in
other geographical locations.
o. “Transmit” means to send data via NADIN or
Weather Message Switching Center Replacement
(WMSCR) to an outside recipient or to process data
internally within an operational system that shares a
p. “Form” means a paper record or an automated
equivalent. Both must be retained in accordance with
q. “History files” means one or more digital or
paper repositories of data that must be retained in
accordance with FAA directives.
r. “Pertinent” means relating directly and
significantly to the matter at hand.
Statements of fact or of an explanatory nature and
relating to the use of directive material have been
identified and worded as “Notes.”
Each reprinted, revised, or additional page will show
the change number and the effective date of the
Phraseology depicted in this order is mandatory.
Exceptions to this paragraph are referenced in para 511.
Abbreviations authorized for use in the application of
the procedures in this order are those contained in
FAA Order JO 7340.2, Contractions.
1-2-6. JO 7110.10 CHANGES
a. Each reprinted, revised, or additional page will
show the change number and the effective date of the
b. Bold lines in the margin of the text will mark the
location of all changes except editorial corrections.
1-2-7. SYSTEM INSTRUCTIONS
Different operational systems are used to provide
flight services within the United States. Each
individual operational system must have instructions
in the form of a user's manual or guide, either
electronically or in paper form, that provide the
necessary steps to accomplish the requirements set
forth in this order.
Where databases are shared, local procedures may be
used to facilitate the handling of flight data across the
flight plan area boundaries.