Originally Posted by
BraceBrace
What 737 type (I'm not familiar with the MAX)?
For all I know, you can do an emergency descent with the landing gear down... you're not allowed to use speedbrakes? Don't read that anywhere.
If ABNORMAL or EMERGENCY situation dictates to use landing gear during emergency descend- it’s CPT responsibility to use all available sources and actions to meet emergency (FCTM - non normal OPS, QRH- GEN/ NNC usage).
But in normal and expected conditions many SOPs restrict using some techniques (for example ALTN MCP technique, flaps policy, speed brakes policy etc.).
One of my operators doesn’t allow to use SPD BRKs with Flaps more than 15 (FDR trigger).
What about descend rules? To my mind it’s PF responsible (of course ur colleagues should understand your strategy).
There are many techniques, for example:
1.PROG distance*3-1000 ft
2.(PROG distance*3)- 10 nm
3.Cross check at typical ALT vs total distance remaining:
-10.000 FT= 37 nm (FPPM value for 0.78/280/250 descend with allowance for deceleration to F15 configuration at distance approximately 7 nm from touchdown)
-5.000 FT= 22 nm (same as above)
4. Set WPT/ALT (on DES page) probable shortcut waypoint (IF/FAF) or just RWY/elevation, observe VS required, and set VS= VS required+300…500 fpm)
5. Just restrict IAF,IF, FAF to “AT” and set at IF/FAF Vapp instead of 180B, 160B (for example) - ALWAYS COMPLY WITH STAR/APP/ATC RESTRICTIONS AND DO NOT MODIFY LEGS WITHOUT ATC PERMISSION. Set on DESC FORECAST page tailwind at base and final legs (it can help you by extending DECEL segment).
In all cases comply with your SOP, ATC,AIRSPACE and make sure your colleagues understand your intentions.