327
Federal Aviation Administration, DOT
Pt. 60, App. D
2.a.2.
.....................
Collective and Pedals
...
Breakout—
±
0.5 lb (0.224 daN) or
25%. Force—
±
1.0 lb (0.224
daN) or 10%.
Ground; Static condi-
tions. Trim On and
Off. Friction Off.
Augmentation On
and Off.
Record results for an uninter-
rupted control sweep to the
stops.
X X X
2.a.3.
.....................
Brake Pedal Force vs.
Position.
±
5 lbs (2.224 daN) or 10%
..........
Ground; Static condi-
tions.
.......................................................
X X X
2.a.4.
.....................
Trim System Rate (all
applicable systems).
Rate—
±
10%
.................................
Ground; Static condi-
tions. Trim On.
Friction Off.
The tolerance applies to the re-
corded value of the trim rate.
X X X
2.a.5.
.....................
Control Dynamics (all
axes).
±
10% of time for first zero cross-
ing and
±
10 (N+1)% of period
thereafter.
±
10% of amplitude
of first overshoot.
±
20% of am-
plitude of 2nd and subsequent
overshoots greater than 5% of
initial displacement.
±
1 over-
shoot.
Hover/Cruise Trim
On Friction Off.
Results must be recorded for a
normal control displacement in
both directions in each axis,
using 25% to 50% of full throw.
X
X
Control Dynamics for irre-
versible control systems
may be evaluated in a
ground/static condition.
Refer to paragraph 3 of
this attachment for addi-
tional information. ‘‘N’’ is
the sequential period of a
full cycle of oscillation.
2.a.6.
.....................
Freeplay
........................
±
0.10 in. (
±
2.5 mm)
......................
Ground; Static condi-
tions.
Record and compare results for
all controls.
X X X
2.b.
........................
Low Airspeed Handling Qualities.
2.b.1.
.....................
Trimmed Flight Control
Positions.
Torque
±
3% Pitch Attitude
±
1.5
°
Bank Attitude
±
2
°
Longitudinal
Control Position
±
5% Lateral
Control Position
±
5% Direc-
tional Control Position
±
5%
Collective Control Position
±
5%.
Translational Flight
IGE—Sideward,
rearward, and for-
ward flight. Aug-
mentation On and
Off.
Record results for several air-
speed increments to the
translational airspeed limits and
for 45 kts. forward airspeed.
May be a series of snapshot
tests.
X
2.b.2.
.....................
Critical Azimuth
.............
Torque
±
3% Pitch Attitude
±
1.5
°
,
Bank Attitude
±
2
°
, Longitudinal
Control Position
±
5%, Lateral
Control Position
±
5%, Direc-
tional Control Position
±
5%,
Collective Control Position
±
5%.
Stationary Hover.
Augmentation On
and Off.
Record results for three relative
wind directions (including the
most critical case) in the critical
quadrant. May be a series of
snapshot tests.
X
2.b.3.
.....................
Control Response.
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