NEO

Question 1

Starter differences

Answer 1

Start attempts reduced from 4 to 3

Pause between attempts increased from 20s to 60s

Question 2

Oil differences

Answer 2

Min increased to 10.6qt plus .45/hr from 9.5qt plus .5/hr
Min start temperature increased to -29 from -40
Min take off temperature increased to 10 from -10

Question 3

EGT/N1/N2/VIB differences

Answer 3

 Higher EGT limits in all cases - the 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% although N2 MAX is increased 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

20
500
70
300

Question 5

Icing differences

Answer 5

 Engine run-up 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

260kts and 280kts