AFCS

Question 1

Is takeoff with a Secondary SAS engaged authorized?

Answer 1

No, it is not authorized

Question 2

Is selecting Secondary SAS in-flight authorized?

Answer 2

Yes in the case of an in-flight failure of a primary SAS computer.

Question 3

With one PSAS operational and the other inoperative, two Auto Pilots operational and in the ATT mode are there any limitations?

Answer 3

One PSAS inop- 120 KIAS 2. Day or night VFR only

Question 4

With two PSAS operational, One Auto Pilot inoperative and in the SAS mode are there any limitations?

Answer 4

Day or night VFR only

Question 5

With two PSAS operational and One Auto Pilot inoperative is ATT mode available and can the aircraft be coupled?

Answer 5

ATT mode is available. Yes, the aircraft can be coupled

Question 6

When coupled to the collective axis after takeoff and in the climb (3 cue)(VS or GA mode) can the rate of climb be adjusted to achieve 100% NR?

Answer 6

No- The CFD will limit power to the maximum continuous torque, TGT or Ng level. In order to adjust to 100% NR while coupled, the collective axis must be decoupled.

Question 7

If the #2 Air Data Computer failed, what information would be lost on the PFD?

Answer 7

Airspeed, Altitude, Vertical speed information and Temperature

Question 8

If the #2 Air Data Computer failed, is it possible to restore the lost data to the PFD?

Answer 8

Using the Reversion Control Panel- The opposite system can be selected by placing the ADC Reversion Control switch to the operating side to provide single source data to both sides of the cockpit.

Question 9

In the event of an RTU failure, is it possible to use the Com/Nav radios on the failed side?

Answer 9

Reversionary tuning is available by turning off the failed RTU and selecting the 1/2 function key of the operating RTU. Cross side radio labels are shown in yellow on the onside RTU.

Question 10

When operating weather radar, what warning must the crew be aware of and comply with?

Answer 10

Ensure the area within the 270 degree forward sector of the nose of the helicopter to a minimum distance of 100 feet is clear of personnel, reflecting surfaces, flammable materials, large metallic objects such as hangars or other aircraft as injury to personnel and or damage to equipment can result.

Question 11

What the minimum altitude for coupled operations with airspeed above 120 KIAS?

Answer 11

200 Feet AGL

Question 12

What provides signals for the PSAS?
How many are there?

Answer 12

6 Rate Gyros. 2 in the pitch axis, 2 roll and 2 yaw

Question 13

What provides signals for SSAS?

Answer 13

2 AHRS

Question 14

What is the difference between SSASS and PSAS computers?

Answer 14

The functions are similar just using different attitude and accel inputs

Question 15

What does SAS provide?

Answer 15

Short term rate damping, inner loop

Question 16

What is the function of the RVDT’s in the AFCS system?

Answer 16

Give position info of controls to AFCS and also collective position and rate of pull to the FADEC

Question 17

The accelerometers provide signal input for which computer in the AFCS system?

Answer 17

They supply signal information to the FCC’s for ‘Enhancements’ which are Hover Augmentation and Gust Alleviation

Question 18

True or False. If both AP computers are turned off, enhancements and trim beepers will still be functional?

Answer 18

False. At least one AP must be engaged for Trim beepers and enhancements

Question 19

Why should a pilot turn off a failed autopilot?

Answer 19

To prevent erroneous signals from being sent to flight controls resulting in uncommanded movement or hardover

Question 20

What is the authority and rate of the trim system in ATT mode

Answer 20

100% authority at 10% per second

Question 21

What is the maximum bank angle in ATT mode and coupled to FD?

Answer 21

30° bank in ATT mode and 22° while coupled at a roll rate of 5° per second

Question 22

What FD mode may be coupled below 50 KIAS (Vmini)?

Answer 22

Rad Alt

Question 23

What is the default Rate of climb or descent when utilizing ALTP to initiate a climb/descent?

Answer 23

500 fpm

Question 24

What are the speed restrictions based on the following component failure combinations?

• Both AP’s inoperative
• Single PSAS on
• 2 PSAS 1 AP (ATT Retention)
• 1 PSAS 2 AP (ATT Retention)

Answer 24

• Both AP’s inoperative 120 VNE
• Single PSAS on. 120 VNE
• 2 PSAS 1 AP (ATT Retention). 165 VNE
• 1 PSAS 2 AP (ATT Retention). 120 VNE

Cyclic & Yaw trim required for ATT

At least one AP must be on for attitude hold, turn coordination and coupled flight