UH-72 RFM

Question 1

Define Height-Velocity Envelope

5.1.9

Answer 1

The diagram shows the area which is critical for helicopter operation in the event of a single engine failure during takeoff, landing, or other operation near the ground.

The curves are applicable for landing sites with smooth firm surfaces and define the conditions in which a safe landing can be made after an engine suddenly becomes inoperative.

Question 2

Rotor brake limitations

9.2-58-3 2.1

Answer 2

The rotor brake shall not be applied until both engines are shut down and rotor RPM has dropped below 50%

Do not apply the rotor brake at temperatures below -30°C

Allow for a minimum cooling period of 10 minutes before next application of rotor brake

NOTE if an emergency stop of the rotor is necessary, apply rotor brake anytime after both engines are shut down. Before next application of the rotor brake after an emergency stop, maintenance action is required.

Question 3

Maximum autorotation airspeed and maximum range airspeed

3.4.18

Answer 3

90 KIAS

Question 4

Minimum autorotation airspeed and minimum rate-of-descent airspeed

3.4.18

Answer 4

60 KIAS

Question 5

Maximum forward airspeed with hinged doors in open spoiler position and sliding doors closed, open or removed is______ KIAS or VNE whichever is less.

9.1-2-4 2.3

Answer 5

100 KIAS

Question 6

Minimum height for hands-off and feet-off operation during T/O and approach

9.2-1-12 2.3

Answer 6

200 ft AGL

Question 7

Minimum height for hands-off and feet-off operation in cases other than T/O and approach

9.2-1-12 2.3

Answer 7

500 ft AGL

Question 8

Rotor RPM warning conditions/indications

3-9 3.2.1

Answer 8

NRO low - 95% or less, steady light and low pitch beeping tone

NRO high - 106% or above, flashing light and warning gong

NRO high- 110% or above, flashing light and steady high pitch tone

Question 9

Airspeed limit AEO FLI

2.11

Answer 9

65 knots if above 8.5 of the FLI

Question 10

In NORM mode the VARTOMS will automatically control rotor speeds as follows

7.13.1

Answer 10

1. Low airspeed below 55kts 101% to 103.5%
2. Airspeeds 55kts or higher 96.5% to 102%

Question 11

What are the “Abort Start” criteria?

4.4.2

Answer 11

ITON

Ignition doesnt take place in 15 seconds (320° C TOT)

TOT rise above limits

No postive ENG/XSMN Oil pressure upon reaching ground idle conditions

N2 and NR needles are not matched upon reaching ground idle conditions

Question 12

The three basic rules of inflight emergencies

3.1.1

Answer 12

MAT

1. Maintain aircraft control
2. Analyse the situation
3. Take proper action

Question 13

How high is the bottom of the tail rotor blade from the ground?

7.5 Figure 7-1

Answer 13

6.5 feet

Question 14

What is the diameter of the rotor disc?

7.5 Figure 7-1

Answer 14

36 feet 1 inch

Question 15

When does engine overspeed protection disrupt fuel flow and kill the engine?

7-16 7.8.3

Answer 15

Approximately 123% N2

Question 16

What determines flight status?

7-45 7.20.6.1

Answer 16

N1 ENG 1 or 2 >50% and
XMSN pressures 1 or 2 >1 bar and
TQ1 + TQ2 >50%

Question 17

Minimum AS for IAS mode?

9.2-1-12 2.2

Answer 17

30 KIAS

NOTE in ALT mode below 80 KIAS the airspeed indicator shall be monitored closely.

Question 18

SEMA normal control authority

9.2-1-85 7.2.2

Answer 18

11% Pitch
18% Roll
12% Yaw

Backup SAS
5.5% Pitch
9% Roll
12% Yaw

Question 19

When do VARTOMS automatically become activated?

7.13

Answer 19

As soon as both engines reach 20% torque

Question 20

An engine failure or torque split of _____ the VARTOMS will automatically switch to MAN- mode

7.13.1.4

Answer 20

15%

Question 21

When does ENG SPLIT caution appear?

3-18 3.2.3

Answer 21

N1 indicators show difference of 10% or more

Question 22

Engine Oil Pressure NOTE

2.12.1

Answer 22

Exceeding 5.0 bar oil pressure is allowed for transient operation during the start cycle and warm up at ground idle only

Question 23

XMSN OIL PRESS NOTE

2.12.5

Answer 23

XMSN OIL PRESS warning light illumination is acceptable in the range from 1.0 to 1.4 bar during the pressure build-up phase.

Question 24

What are the blades made of?

7.1

Answer 24

Fiber-reinforced composite blades

Question 25

Maximum displacement of cyclic during ground run-up?

4.13.1

Answer 25

3 cm