ENSTROM F-28F/280F SERIES MAINTENANCE MANUAL SUPPLEMENT
Rev.
8
MM-21-9
Sep
20/17
Table 21-1. 280FX Flight Ampere Load Conditions
NOTE: The information in this table applies to early production (see paragraph 21-6 NOTE).
ELECTRICAL DEVICE
DAY
NIGHT
A
1
B C D E F
2
G H I J K L
Boost Pump
5.5
5.5
5.5
5.5
5.5
5.5
5.5
5.5
5.5
5.5
5.5
5.5
Longitudinal Trim
3
-
6.0
-
6.0
-
-
6.0
-
6.0
-
6.0
-
Lateral Trim
3
-
-
6.0
-
6.0
-
-
6.0
-
6.0
-
-
Radio, Transmit
3
-
6.0
6.0
-
-
Radio, Receive
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
Transponder 1.8
1.8
1.8
1.8
1.8
1.8
1.8
1.8
1.8
1.8
1.8
1.8
Loran-C 2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
Instrument Cluster
4
0.64
0.64
0.64
0.64
0.64
0.64 0.64
0.64
0.64
0.64
0.64
0.64
Master Relay
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
Anticollision Lights
3.4
3.4
3.4
3.4
3.4
3.4
3.4
3.4
3.4
3.4
3.4
3.4
Navigation Lights
-
-
-
-
-
8.2
8.2
8.2
8.2
8.2
8.2
8.2
Panel Lights
-
-
-
-
-
2.0
2.0
2.0
2.0
2.0
2.0
2.0
Forward Landing Light
5
-
-
-
-
-
- -
-
-
-
20.8
20.8
Aft Landing Light
5
-
-
-
-
-
-
-
-
-
-
3.14
3.14
TOTAL 15.44
27.44
21.44
25.64 37.64
31.64 61.58
49.53
NOTES:
1 Flight condition ‘A’ is normal day cruise
2 Flight condition ‘B’ is normal night cruise
3 Device subject to intermittent use
4 Including graphic engine monitor and low rotor rpm circuit
5 Device subject to short duration (5 minutes)
The above load conditions include all standard electrical equipment for the 280FX helicopter. If other equipment is added,
the load conditions above must be modified. F-28F loads same as indicated in Section 6-15, page MM-6-27.
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