(1) To correct information, do NOT erase or overwrite any item. Draw a horizontal line through
it, and write the correct item immediately adjacent to it and within the same space.
(2) To update information, draw a horizontal line through the old item. Write the new item
adjacent to it and within the same space. Do NOT line out the altitude being changed until after the
aircraft has reported or is observed (valid Mode C) leaving the altitude. The new altitude is entered
below the' old altitude and not adjacent to it as with all other entries.
a. Indicate aircraft identity by one of the following, using combinations not to exceed seven
(1) Civil aircraft, including air carrier. Use the aircraft letter-number and registration number
including the letter "T" prefix for air taxi aircraft, the letter "L" for lifeguard aircraft, or a two or three-
letter aircraft company designator specified in the contractions handbook, followed by the trip or flight
(a) Use prefixes indicating service branch or mission type (Figure 1-4) followed by the last
five digits of the serial number (last four digits for CAF, CAM, or CTG defined in Figure 1-4).
(b) Use pronounceable words of three to six letters followed by a one to four-digit number,
such as SAMP 316. A maximum number of seven characters (any combination) is permitted.
(c) For USN or USMC fleet and training command aircraft, use the service prefix and two
letters (the phonetic alphabet equivalents) followed by two or three digits or the service prefix, a digit,
and a letter (the phonetic alphabet equivalent) followed by two or three digits.
(d) Special-use or approved special-use identifiers.
b. To identify aircraft piloted by solo USAF or USN undergraduate student pilots operating in solo
flight, the aircraft identification in the flight plan shall include the letter "Z" as a suffix. However, do