AMS

Question 1

When is a single RAID door commanded open

Answer 1

Onside PACK fail or commanded off

Question 2

What does Overheat Detection System (ODS) observe

Answer 2

1. Engine Bleed and PACKS
2. APU Bleed
3. Plumbing for Wing and Engine A/I

Question 3

When are PACKS automatically recovered

Answer 3

1. 500’ both Engines
2. 9700’ OEI, T/O Elevation below 8000’
3. 15000’ OEI, T/O Elevation above 8000’
4. TL below TOGA

Question 4

When are both RAID doors commanded to close

Answer 4

1. Aircraft is on the GRD
2. GS less than 50kts
3. ECS 1/2 PACKS are detected OFF by the AMS Controller
4. PACKS 1/2 selected off on OVHD panel
5. Dump button not activated

Question 5

What is primary purpose of opening Emer. RAM Air Ventilation valve

Answer 5

Smoke Evacuation of FLT Deck/Cabin

Question 6

What scenarios does the FADEC send an ECS off signal to the AMS controller

Answer 6

T/O

1. OEI, APU Bleed unavail.
2. Thrust Levers Max, APU unavail.
3. Ref ECS OFF in TDS, APU unavail.
4. Ref ECS OFF in TDS, A/I ALL

G/A

1. OEI, APU unavail. up to 9700’
2. Thrust Levers Max, APU unavail.
3. Thrust Levers Max, Wing A/I requested on

Question 7

When does a Bleed valve open

Answer 7

Whenever there is No Manifold Pressure on one side and there is Pressure on the other side

In FLT - #2 start in the air, #1 start in air APU unavail.
GRD - Main Engine start, APU unavail.

Question 8

What are the 5 components of CPCS

Answer 8

1. CPC (Dual Channel)
2. OFV
3. PPRV (spring loaded check valve)
4. NPRV (spring loaded check valve)
5. Static Port vented to PPRV

Question 9

When are both Ram Air Inlet Doors (RAID) commanded open

Answer 9

1. Aircraft is on the GRD until FL 175 in Climb phase
2. In Descent below FL 170
3. RAT Deployed
4. A/I system is activated
5. Dump button activated

Question 10

What type of valves are the HSV and EBV

Answer 10

Pressure regulating valves as controlled per the AMS, which receives info. From Pressure and Temp. Sensors downstream of EBV

Question 11

How many Fans are part of the ECS

Answer 11

9 Total
6 Fans for Avionics
2 Recirc. Fans
1 FWD Cargo Fan

Question 12

What Temp. Does the Gasper SOV open

Answer 12

35 C/ 95 F SOV opens directing Recirc. Fan #2 directly into Gasper Manifold

Question 13

When does the AMS ignore the FADEC ECS OFF signal

Answer 13

Above 15000’

Question 14

How long does it take the OFV to fully actuate to 90 open

Answer 14

50 seconds

Question 15

Cabin High Altitude Warning Altitude

Answer 15

9700’ Cabin Alt. (Turns Red), Aural Warning: Cabin

Question 16

Approximate Temp. of air leaving the pre-cooler

Answer 16

~204 C

Question 17

When does Bleed Manifold Pressure Disappear off of Status Page

Answer 17

When both Engines are running

Question 18

When is Emergency Ram Air Activated

Answer 18

Left RAV (AMS Controlled) = < FL250 and Both Packs are OFF
Right RAV (Check Valve) = Ram Air Pressure (Outside) > Cabin Pressure (Inside)