5-10
PAGE
ALPHA Trainer LSA
Pilot Operating Handbook
POH-162-00-40-001
PAGE REV. 0
SECTION
5
PERFORMANCE DATA
5.6.4.
EFFECTS OF THE WIND
Wind (head, cross or tailwind) affects aircraft’s ground speed (GS).
Headwind on takeoff or landing causes the takeoff and landing distance
length to shorten as the GS is slower during these two flight stages. The
opposite holds true for tailwind on takeoff and landing as tailwind increases
takeoff and landing distances significantly.
The table below provides data about the effect of the wind (headwind “+”,
tailwind “-”) on takeoff runway lenght. Data is referenced for sea level (SL)
performance at MTOM.
DISTANCE
[ft] /
[m]
WIND SPEED
-6 kts
-4 kts
-2 kts
0 kts
+4 kts
+8 kts
+12 kts
Ground roll
680 /
270
645 /
197
605 /
184
555 /
170
525 /
160
495 /
151
480 /
146
50 ft / 15 m
obstacle
1130 /
345
1065 /
325
965 /
294
870 /
265
810 /
247
760 /
232
720 /
220
WARNING:
Tailwind affects takeoff and landing performance by more
than twice as much as headwind does.
Headwind shortens
takeoff and landing distances by 25 feet with every 3
kts of wind increase (e.g. provided there is a 6 kts headwind on takeoff and
landing, distances will be approximately 50 ft (16 meters) shorter than ones
published in the manual).
Tailwind increases
takeoff and landing distances by 60-65 feet with every 3
kts wind increase (e.g. provided there is a 6 kts tailwind on takeoff or landing,
distances will be approximately 120-130 feet longer then ones published in
the manual).
CAUTION:
The maximum allowed crosswind component speed on takeoff
and landing is 18 kts (33 km/h). In these conditions it is recommended not to
takeoff with flaps positioned at +2.
CAUTION:
The runway length required increases by 10 % for every 5 kts of
crosswind component.
Summary of Contents for 1001 AT 912 LSA
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