737 Flight Crew Operations Manual
Engines, APU -
Over/Under – Displays
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7.11.8 D6-27370-866-EGP
1 START VALVE OPEN Alert
Illuminated (amber) –
• steady – respective engine start valve open and air is supplied to starter
• blinking – uncommanded opening of start valve. Alert is displayed and
solid amber boxes are displayed in unannunciated positions for that
engine. All three boxes blink for ten seconds, then alert remains on
steady and solid amber boxes are removed (see Note).
2 LOW OIL PRESSURE Alert
Illuminated (amber) –
• steady – oil pressure at or below red line
• blinking – with a condition of low oil pressure. Alert is displayed and
solid amber boxes are displayed in unannunciated positions for that
engine. All three boxes blink for ten seconds, then alert remains on
steady and solid amber boxes are removed (see Note).
3 OIL FILTER BYPASS Alert
Illuminated (amber) –
• steady – indicates an impending bypass of scavenge oil filter
• blinking – with an impending bypass. Alert is displayed and solid amber
boxes are displayed in unannunciated positions for that engine. All three
boxes blink for ten seconds, then alert remains on steady and solid
amber boxes are removed (see Note).
Note: Blinking is inhibited:
• during takeoff from 80 knots to 400 feet RA, or 30 seconds after
reaching 80 knots, whichever occurs first
• during landing below 200 feet RA until 30 seconds after touchdown
• during periods when blinking is inhibited, alerts illuminate steady.
September 18, 2008
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