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  Aircraft  Equipment Suffixes  
 
Navigational suffixes, found on the aircrafts flight plan, are used to indicate the /type navigational equipment. It is important to consider the navigational suffix when providing ATC services. The common term for navigational equipment is 'slant'. Each suffix below would normally be displayed with a / before it.
x

No DME

X

No transponder

T

Transponder with no Mode C

U

Transponder with Mode C

x

DME

D

No transponder

B

Transponder with no Mode C

A

Transponder with Mode C

x

TACAN only

M

No transponder

N

Transponder with no Mode C

P

Transponder with Mode C

x

Area Navigation

Y

LORAN, VOR/DME, or INS with no transponder

C

LORAN, VOR/DME, or INS, transponder with no Mode C

I

LORAN, VOR/DME, or INS, transponder with Mode C

x

ADVANCED RNAV WITH TRANSPONDER AND MODE C

Note: If an aircraft is unable to operate with a transponder and/or Mode C, it will revert to the appropriate code listed above under Area Navigation.
x
x
E

Flight Management System (FMS) with DME/DME and IRU position updating

F

FMS with DME/DME position updating

G

Global Navigation Satellite System (GNSS), including GPS or Wide Area Augmentation System (WAAS), with en route and terminal capability.
R

Required Navigational Performance (RNP). The aircraft meets the RNP type prescribed for the route segment(s), route(s) and/or area concerned.

x

Reduced Vertical Separation Minimum (RVSM)
J

/E with RVSM capability

K

/F with RVSM capability

L

/G with RVSM capability

Q

/R with RVSM capability

W

RVSM capable