OPERATION AND INSTALLATION MANUAL
EN-1320
3.0. MODEL DESIGNATION
3.1. Hub designation
A V - 72 5 - 1 - E - C - F - R (W) - ( )
1 2
3 4 5 6 7 8 9 10 11
1
Avia Propeller (manufacturer)
2
V
= Variable pitch propeller
3
Type of blade shank
4
Number of blades
5 Consecutive number of series
6
Code for propeller flange
D
= ARP 502, six mounting studs 1/2“-20UNF, two dowel pins,
pitch circle 4.0 inch (101,6 mm)
E
= ARP 880, eight mounting studs 9/16“-18UNF, two dowel pin holes,
pitch circle 4.25 inch (107,95 mm)
7
Letter for counterweights
C
= Counterweights for pitch change forces to increase pitch
8
Letter for feathering
F
= Feathering capability
9
Letter for reverse
R
= Reverse capability
10
Code for reverse system
(G)
= Reverse system Garrett TPE-331-( )
(P)
= Reverse system Pratt
&
Whitney PT6A-( )
(W)
= Reverse system Walter M601-( ) / GE H-Series
11
Code for design changes
Small letter: Modification not affecting interchangeability
Capital letter: Modification restricting or excluding interchangeability
-R(W)
blank = overspeed governor for 2080 rpm engines
-R(W)-A
= overspeed governor for 1950 rpm engines
61-10-20
MODEL DESIGNATION
Page 3-1
2017-10-06
