Normal Ops Limits Flashcards
How are NF values expressed?
In terms of main-rotor rpm (NR)
What is the max NR for rotor brake application and minimum time between consecutive brake applications?
160 rpm and 5 mins
What duration is permitted using the OEI Maximum Contingency (MAX) power rating, without exceeding any limit?
2 mins 30sec
What is the slope landing limitation for nose up slope if the wind speed is 30 kts on the nose? (AUM less than 6100kg)
10 degrees
What is the maximum time limit for a low g manoeuvre (less than 0) ‘g?
5 sec
What is the maximum airspeed for turbulence penetration in the ARH Tiger?
100 KIAS
What is the maximum pitch attitude manoeuvre limitation?
Plus or minus 90 degrees
What is the maximum permissible groundspeed for touchdown and rolling take-offs with the tail wheel locked (non-emergency) below 6100kgs?
43 kts
What period / duration is permitted using the OEI Super Contingency (SUP) power rating, without exceeding any limitations?
30 sec
What is the time limit on the NF transient 342 to 372 rpm?
20 sec
What recovery action/s (if any) are necessary following a low normal (less than 0) ‘g’ manoeuvre?
30 sec required under positive g
What is the Vne for the Tiger before correcting for Pressure Altitude (PA) and OAT?
175 KIAS
Minimum AUM:
Maximum AUM (non-jettisonable):
Maximum AUM (Full flight envelope):
Maximum AUM (Ferry):
Minimum AUM: 4300kgs
Maximum AUM (non-jettisonable): 5650kgs (fuel/oil/crew only)
Maximum AUM (Full flight envelope): 6100kgs
Maximum AUM (Ferry): 6400kgs
If an engine first start has to be aborted due to no ignition, what is the wait time following the dry crank procedure before a second start can be attempted?
30 sec
What is the maximum taxi speed permissible with the tailwheel unlocked?
10 kts
What is the lateral slope landing limitation if the wind speed is 30 kts? (AUM less than 6100kg)
3 degrees
During the engine starting phase (when the starter motor is engaged), what is the steady T4.5 limitation?
750 degrees C (3 sec)
What is the maximum duration for starter motor engagement during a normal start (auto or manual)?
40 seconds
What does the Flight Manual define as a stagnated start?
Less than 0.5% per second of NG
After what maximum time must an engine start be aborted if no ignition occurs?
25 sec
What are the wind limitations for rotor starting / stopping (including gusts)?
50 Kts
20 Kts (gust spread)
Flight in icing conditions is an approved type of operation?
FALSE
Flight into areas of known severe turbulence is prohibited?
TRUE
What are the ranges where Nr horn activates?
Low Nr = Below 302
High Nr= Above 340
List the abort start criteria: (9)
Abort start if:
- No ignition within 25 sec
- T4.5 exceeds 750ºC (transient up too 800ºC for 3 sec)
- No NF by 35% NG
- No NR by 30% NG (ACC.D exempt)
- NG stagnation (<0.5%/sec)
- Start light illuminated after 60% NG
- NF overspeed flags lit after 85 RPM NF
- Start light lit after 40 sec
- PWR class A during start
Explain the engine starter limits:
Starter 1st use
- Wait 30 seconds
Starter 2nd use
- Wait 60 sec
Starter 3rd use
- Wait 30mins
Note: starter can only run for 15sec before auto turning off
What is max AUM for full flight envelope and ferry operations?
6100kgs
6400kgs (ferry)
At what NF value will the overspeed protection activate and shutdown an engine?
378 NF
Max air taxi speed sideways/rearwards:
50KTS
Max yaw rate:
120º/sec
What temperature range are tiger perf calculations valid within?
+/- 5ºC
What are the flight, holding, single engine and ACC.D fuel flow rate?
Flight: 360kg/hr
Holding: 300kg/hr
OEI: 200kg/hr
ACC.D: 72kg/hr
Does DHH work over water?
No, water reflects differently
DHH and RHH cannot be activated when flying above what speed?
50KIAS
RADALT Max height
3000ft
Maximum pitch and AoB :
Pitch: 90º
AoB: 90º
Slope landing limits wind below 25kts and greater than 25kts (AUW below 6100KGs):
Wind speed below 25kts:
Lateral: 12º
Nose up: 12º
Nose down: 8º
Wind speed above 25 kts:
Lateral: 3º
Nose up: 10º
Nose down: 8º (Doesn’t change)
Slope landing limits when AUW is greater than 6100kgs:
Lateral: 8º
Nose up: 8º
Nose down: 3º
Your aircraft weight is above 6100kgs, what are the wind limits that apply to slope landings and how do they impact them?
Slope landings are not possible with wind speed above 40KIAS, there is no impact to angle limits
Maximum touchdown speed during an emergency rolling landing
70KTS GS
Maximum wind gusts above mean in turbulence:
35KTS
Max AUW for full flight envelope operations?
6100kgs
Above what weight is a solid surface required for rolling take-offs?
6100kgs
Max speed for rolling T/O:
35kts GS
What is the minimum and max airspeeds which a datum can be flown in 3 and 4 axis upper modes?
4 axis: 40KTS - 0.95Vne
3 axis: 60KTS (flashing went below 80KIAS)
Note: 4 axis mode datum’s can be set from 27KIAS
VNE OEI:
120KIAS
Operating between 6100 and 6400kgs, what limits are applied to the aircraft?
Below 120KIAS: Not above 60ºAoB/2Gs
Above 120KIAS: Not above 55ºAoB/2Gs
VNE: 160KIAS
Max Yaw Rate: 30º/sec
Sideways hover taxi: 20kts
What is the max speed for tail wheel locked rolling take-off?
35kts G/S
What NR will cause the AC electrical power to fail?
Below 265NR
Explain all ARH slope limits:
Below 6100 kgs, less than 25KTS
- 12 Lateral
- 12 Nose up
- 8 Nose down
Below 6100kgs, greater than 25KTS
- 3 Lateral
- 10 Nose up
- 8 Nose down
Above 6100kg, less than 40 kts
- 8 Lateral
- 8 Nose up
- 3 Nose down
Windscreen wiper limit
120KIAS, only applies to gunner cockpit (rear seat)
