Limitations Engines

Question 1

What is the EGT limit for A319/A320 for takeoff/go around, MCT and starting ?
NEO ?

Answer 1

Takeoff and go around all engines // time limit 5min // EGT limit 950°C
Takeoff and go around one engine // time limit 10min // EGT limit 950°C
MCT // Not limited // 915°C
Starting ground and flight // // 725°C

For takeoff and go around, and MCT to get the NEO number just add 110°C, not applicable to starting

Takeoff and go around all engines // time limit 5min // EGT limit 950=> 1060°C
Takeoff and go around one engine // time limit 10min // EGT limit 950=> 1060°C
MCT // Not limited // 915=> 1025°C
Starting ground// // 750°C
Starting in flight // //875°C

Question 2

What is the max N1 and N2 for A319 or A320 ?

Answer 2

N1 = 104%
N2= 105%

Question 3

What is the max N1 and N2 for A320Neo and A321NEO ?

Answer 3

N1 = 101%
N2 = 116,5%

Question 4

What is the max continuous oil temp, transient (Neo and CEO) ?

Answer 4

Maximum continuous temp = 140°C

Transient 155°C

Question 5

What is the minimum oil starting temp, and before takeoff temp (NEO, CEO) ?

Answer 5

Minimum starting temp -40°c

Minimum takeoff : Neo 19°C, CEO -10°C

Question 6

What is the minimum oil pressure A320/319 and NEO ?

Max oil pressure ?

Answer 6

Minimum Neo : 17,4PSI
Minimum CEO : 13PSI

Maximum NEO oil above 50°C : 130,5PSI
Maximum NEO oil below 50°C : 145PSI

Max CEO : around 90PSI

Question 7

How many start cycles can you do with NEO and CEO ? Do you have to pause between start ?

Answer 7

A start cycle is 3 start attempts
Pause of 60s between each cycle for NEO
Pause of 20s for CEO

Cooling of 15min after 3 failed cycles for NEO, 4 failed cycles for CEO

Question 8

At what N2 you must not run the Starter NEO, CEO ?

Answer 8

N2 63% for NEO

N2 20% for CEO

Question 9

Flex takeoff, what is the highest temp for the FLEX (TMAXFLEX) ? A319,A320, A320NEO, A321 NEO ?

Answer 9

A319 TMAXFLEX : ISA+60°C
A320 CEO : ISA+53°C
A320 NEO : ISA+55°C
A321 NEO : ISA+52°C