LIMITATIONS Flashcards
Operating Limitations.
Types of operation approved?
By day and night in VFR.
Maximum permissible weight?
2250 kg (4961 lb)
CG datum location?
3.40 m forward of the main rotor head centre line.
Lateral CG LH limit?
0.18 m
Lateral CG RH limit?
0.14 m
Maximum speed?
VNE Power-ON
-155 kt at zero pressure-altitude.
-Higher altitudes, reduced by 3 kt/ 1000 ft.
-In cold weather 10 kt is subtracted from VNE when OAT is below -30℃.
Maximum speed?
VNE Power-OFF
-125 kt at zero pressure-altitude.
-Higher altitudes, reduced by 3 kt/ 1000 ft.
-In cold weather 20 kt is subtracted from VNE when OAT is below -20℃ without dropping below 65 kt.
Maximum substantiated pressure- altitude?
20.000 ft (6096 m)
Minimum temperature?
- 40℃
Maximum temperature?
ISA + 35℃ limited to + 50℃.
Servo-transparency?
Prohibited.
Could lead to hazardous situation at low clearance from ground and particularly during right turn maneuver.
Flight in falling snow?
-When visibility is greater than 1500m
-Flight when visibility 800m to 1500m flight time is limited to 10 minutes.
-Flight when visibility is less than 800m flight in falling snow is prohibited.
Main rotor limitations?
Power ON
On the ground at low pitch &
In stabilized flight.
On the ground at low pitch
380 +/- 5rpm.
In stabilized flight 390 + 4/- 5 rpm.
Main rotor limitations?
Power OFF.
Maximum & minimum.
Maximum: 430 rpm
Minimum 320 rpm
The horn sounds when rotor speed is?
Below & above rpm.
Below 360 rpm (continious sound)
Above 410 rpm (intermittent sound)
Rotor brake limitation?
Maximum rotor speed for rotor brake application.
170 rpm
Rotor brake limitation?
Minimum time between two consecutive brakings.
5 min
Torque limitations?
Airspeed lower than 40 kt
Maximum transient & maximum
continuous torque.
Maximum transient torque (10 s)
107%
Maximum continuous torque 100%
Torque limitations?
Equal to or higher than 40 kt.
Maximum continuous torque 94%
Engine limitations?
Determined by which parts?
TURBOMECA “ARRIEL 1D1” engine.
Determined by:
Gas generator rotation speed (Ng)
Exhaust gas temperature (t4)
Free turbine rotation speed (Nf)
Heating and demisting is forbidden above engine maximum continuous rating (Ng or t4)
Gas generator speed limitations?
Maximum transient rating
(less than 5 s)
Maximum takeoff rating (5 min)
Maximum continuous rating
Maximim transient rating
(less than 5s) Ng = 107.5% Ng=+6
Maximum takeoff rating (5 min) without P2 air bleed Ng= 0
With P2 air bleed Ng= -0,6
Maximum continuous rating= Ng 98% Ng = -3.5
NOTE: 100% Ng corresponds to 51800rpm.
t4 temperature limitations?
Maximum engine starting
Maximum transient during starting
Maximum on takeoff
Maximum continuous
Maximum for engine starting 795℃
Maximum transient during starting (5 s max) 865℃
Maximum on takeoff 845℃
Maximum continuous 795℃
Free turbine speed limitations?
Maximum continuous equivalent
Transientlimits (5 s max)
Minimum/ maximum
Maximum continuous equivalent 417 rpm
Transient limits (5 s max)
Minimum 330
Maximum 463
NOTE: Rotor speed of 394 rpm corresponds to a free turbine speed of 42452 rpm.
Oil pressure limitations?
Minimum pressure above 85% Ng
Minimum pressure between 70% and 85% Ng
Maximum pressure outside starting sequence
Minimum pressure above 85% Ng
1.8 bar
Minimum pressure between 70% and 85% Ng
1.3 bar
Maximum pressure outside starting sequence
5 bar
Oil temperature limitations?
Maximum
Minimum before power application
Maximum oil temperature 115℃
Minimum before power application 0℃
Electrical system?
Normal voltage
Maximum voltage
Maximum current
Voltage should normally be between 26V and 29V.
Maximum voltage 31.5V
Maximum current 150A
Landing and stopping on slopes?
Nose-up
Nose-down
Sideways
Nose up 10℃
Nose down 6℃
Sideways 8℃
Restrictions?
Aerobatic maneuvers.
Engine starting when snow or ice accumulations are in or around air intake.
Flight in freezing rain or icing conditions.Engine power reduction in fight using fuel flow control except for autorotational training.
Minimum crew & which seat?
One pilot, in RH seat.
Maximum occupants?
Maximum number of occupants including crew: 6
Engine starter/generator limitation?
first start failed -> cool 1 min -> CRANK (30s) -> cool 1 min -> start.
first start failed -> cool 1 min -> CRANK (30s) -> cool 1 min ->
2nd start failed -> cool 30 min -> CRANK (30s) -> cool 1 min -> start
Loading limitations?
Rear cabin floor
LH forward cabin floor
Rear hold
LH hold
RH hold
Rear cabin floor 310 kg
LH forward cabin floor 150 kg
Rear hold 80 kg
LH hold 120 kg
RH hold 100 kg