Systems Limitations

Question 1

Max Negative Cabin Pressure

Answer 1

-1.0 PSI

Question 2

Max Positive Cabin Pressure

Answer 2

9.0 PSI

Question 3

Safety Relief Valve - Cabin

Answer 3

8.6 PSI

Question 4

Ram Air Inlet Pressure to Open

Answer 4

Only opens if differential pressure is lower than 1 PSI

Question 5

APU Bleed Use with Low Pressure (LP) Ground Unit

Answer 5

Do not use conditioned air simultaneously from PACKS and LP ground unit (to avoid chattering of the non return valves).

Question 6

APU Bleed Use with High Pressure (HP) Ground Unit

Answer 6

Use of an external HP Cart to supply PACKs for Air Conditioning is PROHIBITED.

Question 7

Air Conditioner Avionics Parameter

Answer 7

The aircraft electrical system should not be powered for more than 2 hours without a cooling system when the OAT is above 49C

Question 8

Can you operate the APU if the LOW OIL LEVEL ECAM advisory is displayed?

Answer 8

Yes; MX action is required within next 10 hours of APU operation.

Question 9

APU Starter Duty Cycle

Answer 9

1 Minute between each start attempt. Then 60 minutes after 3 consecutive starts.

Question 10

Max EGT for APU

Answer 10

675C

Question 11

Max EGT for start (Inflight) APU

Answer 11

At or above FL350: 1120C

Below FL350 : 1090C

Question 12

Max Rotor Speed APU

Answer 12

107% (APU auto shuts down at 107% N speed ECAM Display)

Question 13

Max Altitude for APU start using battery power only (Elec EMER Config)

Answer 13

FL250

Question 14

Max Alt for APU start using normal electrics

Answer 14

FL390

Question 15

Max Alt for APU - One pack operation with electrical

Answer 15

FL225

Question 16

Max Alt for engine start - APU

Answer 16

FL200

Question 17

Max Alt for Two pack operation w/electrical

Answer 17

15,000 FT

Question 18

A/P Engagement after TO (If SRS is Indicated)

Answer 18

100 AGL

Question 19

A/P Engagement Enroute

Answer 19

900 AGL

Question 20

A/P RNAV visual approach - Disengage

Answer 20

500 AGL

Question 21

A/P Non-Precision Approach - Disengage

Answer 21

DDA/DA

Question 22

A/P Non-Autoland ILS w/ CAT 1 FMA- Disengage

Answer 22

160 AGL

Question 23

A/P Non-Autoland ILS w/ CAT 2/3 FMA- Disengage

Answer 23

80 AGL

Question 24

A/P Engagement Go-Around (If SRS is indicated)

Answer 24

100 AGL

Question 25

A/P Autoland Approach Disengage

Answer 25

Rollout/ Taxi Speed

Question 26

Auto Land Wind Limitations A320 CEO/NEO, 321CEO/NEO

Answer 26

320 CEO/NEO 321 CEO
* 30 - Headwind
* 15 - Crosswind
* 10 - Tailwind
* 5-15 kts - Wind Correction

321 NEO
* 15 - Headwind
* 10 - Crosswind
* 10 - Tailwind
* 5-15 kts - Wind Correction

Question 27

What’s ways can you start the APU?

Answer 27

Aircraft BATTs
External Power
Engine Generator Source

Question 28

Autoland Demonstrated Capability

Answer 28

320 - 9200ft

321 - 5750ft

Question 29

Max landing weight 321

Answer 29

171,520 lbs