Blackbird Sims / Milviz Forum Archive

Corrected START UP (Cold and dark or ready to start (from 3)





MilViz B737-200 Quick Start Procedure

1) BATTERY – ON and close cover
2) APU – START (two left clicks)
2a) If GEN1 OFF BUS lighted – GEN1 cycle (left click)
If GEN2 OFF BUS lighted – GEN2 cycle (left click)
If APU GEN OFF BUS lighted – APU GEN Left and Right ON
3) APU BLEED AIR – ON
4) ISOLATION VALVE – CLOSE (right click)
5) START VALVE ARMING – Open cover and switch ON
6) ENGINE START – Left Switch to GRD
7) When N2 reaches 22% - Left CUTOFF Lever to IDLE
Verify left ENGINE START switch returned to OFF
8) ENGINE START – Right Switch to GRD
When N2 reaches 22% - Right CUTOFF Lever to IDLE
Verify left ENGINE START switch returned to OFF
9) START VALVE ARMING – Close Cover
10) BLEED – Left and Right Engine Bleed Air Switches to ON
11) L PACK – ON
R PACK – ON
12) GASPER FAN – ON
13) ISOLATION VALVE – AUTO (left click)
14) APU BLEED AIR – OFF
15) PITOT STATIC HEAT – A and B to ON
16) YAW DAMPER – ON
17) APU – OFF
18) GEN1 and GEN2 – Cycle (left click)
19) MASTER CAUTION – Press to clear

…a couple of thoughts.

4) ISOLATION VALVE – CLOSE (right click)

The APU bleed air is on the Left/Eng 1 side of the Isolation Valve When closed, the APU bleed air only goes to Eng 1.

Steps 5) 6) 7) are logical…but shouldn't

13) ISOLATION VALVE – AUTO (left click)

come before...

8) ENGINE START – Right Switch to GRD

… since with the Isolation Valve closed, no bleed air is (should be) getting to the Right/Eng 2?

I also think

17) APU – OFF
18) GEN1 and GEN2 – Cycle (left click)
Should be reversed

I would think that first you cycle the generators - the Blue APU AVAIL light comes telling you that the APU is no longer connected / the Engine generators are on line. Then you stop the APU.

Update to the above:

With the isolation valve closed and the APU Bleed Air valve open, only the left side pressure needle shows an increase pressure in the bleed air system. The right needle remains a 0. This should mean that the right engine is not getting any bleed air to start it. I really think step 13) is missed placed. I think between the left engine start procedures, either set ISOLATION VALVE to OPEN or AUTO should e inserted.

Leaving it "Auto" is the preferred procedure since it removes the need to switch back and forth...