NEO

Question 1

Starter limitations differences

Answer 1

Start attempts 3 instead of 4

Pause between attempts 60s instead of 20s

Question 2

Oil differences?

Answer 2

Min increased to 10.6qt + .45/hr
(CEO 9.5qt + .5/hr)

Min start temperature increased from -40°C to -29°C

Min take off temperature increased from -10°C to 10°C

Question 3

Differences:
EGT
N1
N2
VIB

Answer 3

-Higher EGT limits in all cases -
NEO has slightly different values for colour bands and red limits on most of the engine indications
– operation is identical.

• Introduction of a Ground Air Starting EGT Limit (875°C).
• A reduction in N1 Max from 104% to 101%
• An increase in N2 Max from 105% to 116.5%.
• The NEO has three possible vibration indications, Green, Pulsing Green and Amber (the CEO only
  indicates Green or Pulsing Green).

Question 4

New stable idle parameters on ground

Answer 4

N1 - 20
500
N2 - 70
300

Question 5

Icing differences

Answer 5

• Engine run-up is now only required (NEO) if icing conditions exceed 60mins (30mins CEO).
• After 60 minutes the engines should be increased to 70% for at least 5 seconds.
• When operating in ground fog icing conditions, an engineering inspection should be performed
  on the engine if take-off not performed with 120mins.

Question 6

NEO engine protections

Answer 6

Thrust control malfunction accommodation
Transient bleed valves
Core and booster anti-ice

Question 7

New turbulence penetration speeds

Answer 7

Below FL200 - 260kts
Abobe FL200 - 280kts
Mach .76