Random Tech Questions

Question 1

What are the limits on Flex Temps? (FCOM LIM + OMB 2.3)

Answer 1

TFLEX cannot be:

Higher than TMAXFLEX, equal to (NEO) ISA + 55 °C. (A320 CEO) ISA + 53 °C (A319) ISA + 60 °C

Lower than the flat temperature (TREF).

Lower than the actual OAT.

TREF =

A319 = ISA+30

A320 (CEO/NEO) = ISA+29

A321 = ISA+15

Question 2

Windshear Detection?

Answer 2

The windshear detection function is provided by the Flight Augmentation Computer (FAC) in takeoff and approach phase in the following conditions:

At takeoff, 3 s after liftoff, up to 1 300 ft RA

At landing, from 1 300 ft RA to 50 ft RA

With at least CONF 1 selected.

The warning consists of:

A visual “WINDSHEAR” red message displayed on both PFDs for a minimum of 15 s.

An aural synthetic voice announcing “WINDSHEAR” three times.

Predictive Windshear operates when aircraft below 2,300ft (1,800ft NEO?)
Looks 5nm ahead
Warnings and Cautions from 1,200 ft