1. Flight Manual - Sections 5 & 6 Performance Charts and Weight & Balance
EC 130 B4
Initial Pilot Ground School
Flight Manual - Sections 5 & 6
Performance Charts and
Weight & Balance

2. Chapter 16 - Performance Charts and Weight & Balance
Height - Velocity Diagram ……… ..……………………………… & 16.4
Engine Power Check Chart …………………………………….… & 16.6
T4 Check Chart ………………………………………………………………. 16.7
Hover In Ground Effect Chart ……………………………………………. 16.8
Hover Out of Ground Effect Chart ……………………………… & 16.10
Arriel Cycle Counting ...…………………………………………………… 16.11
Weight and Balance Section ………………………………………………
Basic Datum Planes ………………………………………………………… 16.17
Weight and Balance Arms ……...…………………………………………
Longitudinal Center of Gravity Calculation ………………….………… 16.19
Longitudinal Center of Gravity Chart ……………………………………
Lateral Center of Gravity Calculation ……………...………….………… 16.21
Lateral Center of Gravity Chart …………………………...………………
16.2

3. Height / Velocity Diagram
The Avoidance Zone is defined by five points:
Constant Points
Point A - Constant at 7 feet AGL skid height and 0 knots airspeed (low hover point)
Point B - Constant at 30 feet AGL skid height and 50 knots airspeed
Point C - Constant at 100 feet AGL skid height and 65 knots airspeed
Variable Points
Point D - Variable height (700 ft < height < 1000 ft) depending on the altitude & on
the aircraft weight as determined by line (D), and a constant airspeed of 20 knots.
Point E - Variable height (700 ft < height < 1000 ft) depending on the altitude and
on the aircraft weight as determined by line (D), and a constant zero airspeed.
Working the Chart
Plot OAT, then go vertical to pressure altitude reference line
Horizontal from Hp to aircraft weight, then vertical down to “D” reference line
Horizontal from “D” reference line to 0 airspeed line on chart. This is point “E”
Continue horizontally to the 20 knot reference line. This is point “D”
Connect the points A, B, C, D, and E to obtain the Height - Velocity Envelope
Flight Manual - Section 5 - Page 5 - 6
16.3

4. EC130 B4 OAT = 50 C Hp = 4000’ Weight = 2400 kg Line (D) = 850’ AVOID!
Reference Line “D”
20 kt C A B
Flight Manual - Section 5 - Page 5 - 7
16.4

5. Engine Power Check Procedure
Before Takeoff
In HIGE at 5 ft and before initiating forward flight, pull the collective pitch lever slightly to ensure that the Ng can increase by at least 1%.
In-Flight
Perform a VEMD engine check (Hp less than 12,000 ft and heating
and demisting OFF [ and ~ MCP ]). [ The torque margin and T4 checks are performed automatically by the VEMD with the “Engine Power Check” page. The results are displayed and recorded automatically. ]
Manual Engine Check
In stabilized level flight at the maximum Ng displayed, note the following parameters: Tq, Ng, NR, OAT, and T4. Read the figures ENGINE POWER CHECK and T4 CHECK in the direction indicated by the arrows. Engine power check is OK if point “P” is located in the area marked “CORRECT”. T4 check is OK if point “T” is located in the area marked “CORRECT”.
Flight Manual - Section 5 - Pages 5 - 1
16.5

6. EC130 B4 Tq = 83% NR = 392 rpm Hp = 1000’ OAT = 150 C Ng = 92% 92% P
INCORRECT
Tq = 83%
NR = 392 rpm
Hp = 1000’
OAT = 150 C
Ng = 92%
92%
CORRECT P
100 C
Hp 1000’
392 rpm
Tq 83%
Flight Manual - Section 5 - Page 5 - 2
16.6

7. EC130 B4 T4 = 7600 C Hp = 5000’ OAT = 150 C Ng = 93% 7600 T 93% 5000’
INCORRECT
CORRECT
7600 T
93%
5000’
150
Flight Manual - Section 5 - Page 5 - 3
16.7

8. EC130 B4
Hp = 9500’
OAT = 100 C
9500’
5182 lb
Flight Manual - Section 5 - Page 5 - 8
16.8

9. EC130 B4
Hp = 7000’
OAT = 200 C
The temperature and pressure altitude are known. What is the maximum allowable Gross Weight that you can hover out of ground effect under these conditions?
7000’
5160 lb
Flight Manual - Section 5 - Page 5 - 9
16.9

10. EC130 B4 Hp = 12,000’ OAT = 300 C Gross Wt. = 5000 lbs.
You are required to sling load an air conditioning unit from sea level to the top of a mountain. Upon arrival you will need to hover out of ground effect. Under these conditions can you safely accomplish this mission?
12,000’
4000 lb
Flight Manual - Section 5 - Page 5 - 9
16.10

11. Arriel Cycle Counting 16.11 Max NG K1 Min NG K2 100 % 1.0
100 % 1.0
99 % 0.9
98 % 0.8
97 % 0.7
96 % 0.65
95 % 0.6
94 % 0.55
93 % 0.5
Min NG K2
% .05
(Normal Appr.)
% .10
% .15
(Autorotations)
16.11

12. Weight & Balance
16.12

13. Empty Weight (E.W.) = EW  3130 lbs Vehicle + engine
+ common equipment
+ lubricants, hydraulic
+ unusable fuel
Empty Weight (E.W.) =
EW  3130 lbs
Flight Manual - Section 6
16.13

14. Equipped Empty Weight (E.E.W.) Equals EW + Specific Mission Equipment
Flight Manual - Section 6
16.14

15. All Up Weight (A.U.W.) = [ Gross Weight ]
Equipped Empty Weight (EEW)
+ crew
+ payload
+ usable fuel
All Up Weight (A.U.W.) =
[ Gross Weight ]
A.U.W. max: 5291 lbs
Flight Manual - Section 6
16.15

16. Weight and Balance Calculation Total Moment divided by
Weight X Arm = Moment
Total Moment divided by
Total Weight equals
Center of Gravity
Flight Manual - Section 6
16.16

17. Datum Planes
Flight Manual - Section 6
16.17

18. Weight and Balance Arms
133.8”
NOTE: 1” = 25.4 mm
1 mm = .039”
51.2”
199.8”
18”
18”
Flight Manual - Section 6
16.18

19. Longitudinal Center of Gravity Calculation
CG =
moment
weight
B = m (95.08 in)
A = 1.55 m (61.02 in)
REFERENCE DATUM LINE
C = 3.20 m ( in) (SIDE CARGO)
Fuel = m ( in)
D = 4.60 m ( in) (AFT CARGO)
Flight Manual - Section 6
16.19

20. Longitudinal CG 5291 Within CG
Maximum permissible weight in flight, for IGE, takeoff & landing
5291
4952 lbs
Within CG
Minimum permissible weight in flight
127.21
Flight Manual - Limitations Section - Page 2 - 2
16.20

21. Lateral Center of Gravity Calculation
D +
E + + -
A -
B -
C -
D -
E -
A = in.
C = in.
E = in.
B = 0.79 in.
D = 9.65 in.
NOTE
The central front seat has a slight offset from the longitudinal axis.
- right hand pilot version (basic) : B - = inches
- left hand pilot version (optional) : B + = inches
Flight Manual - Section 6
16.21

22. Flight Manual - Sections 5 & 6 Performance Charts and Weight & Balance
EC 130 B4
Initial Pilot Ground School
End of
Flight Manual - Sections 5 & 6
Performance Charts and
Weight & Balance