Limitations Flashcards
**What is the basic Vne?
135kts
How is the basic Vne modified?
In accordance with placards and markings in relation to ambient conditions
**What is the Vne in autorotation?
100kts or placarded Vne, whichever is lower
**What is Vne in the takeoff power band?
80kts
**What is the maximum allowable speed sideways and backwards?
25kts
**What is the maximum allowable wind speed when operating crosswind or downwind?
25kts
What is Vne with the right door only removed?
70kts
What is the Vne with both left doors only removed?
100kts or placarded Vne, whichever is lower
What is the Vne with all doors removed?
100kts or placarded Vne, whichever is lower
What is the maximum operating altitude?
20,000’ amsl
**What type of manoeuvres are specifically prohibited?
Aerobatic manoeuvres
What is the maximum sea level temperature for operation?
+50 degrees C
How long can the aircraft be left in ambient temperatures below -20 degrees C before start is prohibited?
1 hour
**What is the minimum battery voltage for a battery start?
25.7v
**What are the limits for operation of the starter?
- 50sec on
- 30sec off
- 50sec on
- 30sec off
- 50sec on
- 30 minutes off
**What is the limitation on intentional use of transient limits
Transient limits may not be used intentionally
How are engine oil limits displayed?
Red lines on the EIS gauge display the limits as calculated by the ECU according to NG and ambient conditions
What consideration must be made for the fuel when operating in ambient temperatures below 4 degrees C?
Anti-icing fuel additive must be added to the fuel at the ratio given in the Pilot Flight and Ground Procedures
**What is the maximum Nr for rotor brake engagement?
38%
What is the limitation on engine start with the rotor brake engaged?
It is prohibited
How does cold ambient temperature affect engine oil pressure on start, and what are the pilot actions?
- High engine oil pressure is normal during start in cold ambient temperatures.
- Normal indications should be obtained within 5 minutes orf running at IDLE.
Max NG with engine oil temp below 10 degrees C
90%
Maximum continuous NG
99.8%
Maximum NG for takeoff (5 minutes)
101.2%
Maximum transient NG (20sec)
103.6%
Np limits for continuous operation
94 to 105%
What are the transient Np limits (20 sec)?
92% to 112%
Max continuous MGT
817 deg C
Max takeoff MGT (5 minutes)
853 deg C
Max transient MGT (20 sec)
882 deg C
Max MGT during start
800 deg C
Max transient MGT during start (10 sec)
870 deg C
Max continuous Tq
90% deg C
Takeoff Tq limit
100%
Max transient Tq (5 sec)
105
Minimum engine oil temperature for starting
-20 degrees C
Minimum engine oil temperature above 90 NG
10 degrees C
Continuous operation engine oil temperature
50 to 110 degrees C
Maximum engine oil temperature
110 degrees C
Minimum transmission oil pressure at IDLE
24 psi
Minimum transmission oil pressure at FLY
30 psi
Continuous operation transmission oil pressure
40 to 70 psi
Maximum transmission oil pressure
70 psi
Continuous operation transmission oil temperature
15 to 110 degrees C
Maximum transmission oil temperature
110 degrees C
NP/Nr transient limits due to manoeuvre
104% +/- 3%
What are the Nr/NP limits power off (in autorotation?)
90 to 111%