View Full Version : 737 FMC Stab Trim & VREF for all flaps up.
B737NG_Pilot
23rd Feb 2023, 08:20
Why does the calculated STAB trim ball reduce by 1.0 unit around 77 knots during the T/O Roll with no movement on the stabiliser wheel. ?
Why do we fly at VREF40 + 55 for "All Flaps up landing"?
Amadis of Gaul
26th Feb 2023, 20:13
You're back on the 737 now? I thought you'd gone to the Bus...
FlyingStone
26th Feb 2023, 21:56
1. Do you mean the stab trim value in the FMC? Never noticed that.
2. That's what Boeing's engineers and test pilots came up with and it assures a safe approach can be flown to a landing.
B737NG_Pilot
28th Feb 2023, 11:42
You're back on the 737 now? I thought you'd gone to the Bus...
Always have been on the 737. Reading the A320 manuals as well.