Propeller Owner’s Manual
139
DESCRIPTION AND OPERATION
61-00-39
Page 2-31
Rev. 17 Apr/20
Dash Number (or + number)
, diameter reduction (or increase) from basic
design. In this example, the nominal 112 inch diameter has been
reduced 3 inches = 109 inch dia. (with some exceptions)
there may be a letter following the dash number:
R
- specifically rounded tip
Q
- Q-tip, factory 90 degree bent tip
A
- slightly thinner & narrower tip fairing
E
- elliptical tip
Suffix letters:
A
- blade dimensional modification from basic design
B
- anti-ice boot (alcohol) or de-ice boot (wire element)
C
- blade dimensional modification from basic design
D
- blade dimensional modification from basic design
E
- de-ice boot (foil element) or internal de-ice element (composite blade)
F
- blade dimensional modification from basic design
H
- hard alloy (7076)
K
- de-ice boot installed (foil element, different PN from B above)
N
- shank modification (pilot tube hole)
R
- rounded tips
S
- square tips or; shot peening of blade surface
blank
- original design, no changes
The first 2 or 3 numbers indicate
initial design
diameter (in inches), the last 2 numbers indicate
basic model or template (there are some exceptions
to this definition)
Prefix of up to 3 letters:
L
- left hand rotation
V,MV,M,P,T
- shank design
prop model/M11276NK-3
Aluminum Blade Model Designations
Table 2-2
