AIM
4/3/14
1−1−24
Navigation Aids
TBL 1
−1−5
GPS IFR Equipment Classes/Categories
TSO
−C129
Equipment
Class
RAIM
Int. Nav. Sys. to
Prov. RAIM
Equiv.
Oceanic
En Route
Terminal
Nonprecision
Approach
Capable
Class A
− GPS sensor and navigation capability.
A1
yes
yes
yes
yes
yes
A2
yes
yes
yes
yes
no
Class B
− GPS sensor data to an integrated navigation system (i.e., FMS, multi−sensor navigation system, etc.).
B1
yes
yes
yes
yes
yes
B2
yes
yes
yes
yes
no
B3
yes
yes
yes
yes
yes
B4
yes
yes
yes
yes
no
Class C
− GPS sensor data to an integrated navigation system (as in Class B) which provides enhanced guidance to an autopilot, or
flight director, to reduce flight tech. errors. Limited to 14 CFR Part 121 or equivalent criteria.
C1
yes
yes
yes
yes
yes
C2
yes
yes
yes
yes
no
C3
yes
yes
yes
yes
yes
C4
yes
yes
yes
yes
no
TBL 1
−1−6
GPS Approval Required/Authorized Use
Equipment
Type
1
Installation
Approval
Required
Operational
Approval
Required
IFR
En Route
2
IFR
Terminal
2
IFR
Approach
3
Oceanic
Remote
In Lieu of
ADF and/or
DME
3
Hand held
4
X
5
VFR Panel Mount
4
X
IFR En Route
and Terminal
X
X
X
X
X
IFR Oceanic/
Remote
X
X
X
X
X
X
IFR En Route,
Terminal, and
Approach
X
X
X
X
X
X
NOTE
−
1
To determine equipment approvals and limitations, refer to the AFM, AFM supplements, or pilot guides.
2
Requires verification of data for correctness if database is expired.
3
Requires current database or verification that the procedure has not been amended since the expiration of the database.
4
VFR and hand
−held GPS systems are not authorized for IFR navigation, instrument approaches, or as a primary instrument
flight reference. During IFR operations they may be considered only an aid to situational awareness.
5
Hand
−held receivers require no approval. However, any aircraft modification to support the hand−held receiver;
i.e., installation of an external antenna or a permanent mounting bracket, does require approval.
4.
As the production of stand-alone GPS
approaches has progressed, many of the original
overlay approaches have been replaced with
stand-alone procedures specifically designed for use
by GPS systems. A GPS approach overlay allows
pilots to use GPS avionics under IFR for flying
designated nonprecision instrument approach pro-
cedures, except LOC, LDA, and simplified