Non normal laws Flashcards
Indications: Alt / direct / mech backup - abnormal att
yellow xs (Flt control alt law protection lost)
Use man pitch trim - amber
Man pitch trim only - Red
abnorm att - none
Failures that cause Alt - Direct - mech backup
Alt 1 - Single serious failures
Alt 2 - Double serious
Direct - Double or triple serious
mech backup - all PRIMS and SECs lost
Alternate law 1 / 2 SS control
1 LF / RR
2 LF/ aileron control
abnormal att law SS
LF / aileron control
Mechanical backup control?
All prot lost
no SS control
man pitch trim only
manual rudder control and yaw damper provided by the
Backup control module (BCM) powered by the backup power system (BPS) on B or Y hyd system
AP available in alt/ direct / unusual att / mech backup
AP can sometimes be available in alt law but not any others
Alt law load factor prot
same as normal law
Alt law pitch att prot
Lost
Alt law high speed prot
Prims adjust elevator nose up just for high speed stability
Pilot can override
No green overspeed symbol
Ecam overspeed as normal +4
Difference between alt 1 and 2
Alt 1 SS is LF/RR. Alt 2 is LF / ail control
Alt 1 has same bank protections as norm law.
Alt 2 has no bank protections
Alternat law AOA protection
none. stability only. at low speed PRIMS adjust elevator nose down. speed tape only shows VLS and Stall warning ⛔️ red and black band
Maneuver load alleviation avail in alt law?
yes
What is available in direct law
PFD speed band shows only the red black striped bar - stall warning.
Man pitch trim
ECAM overspeed warning + 4
Stall stall warning available
abnorm attitude SS
Load factor - aileron control
abnorm att becomes active when?
> 50 NU - 30 ND
Bank >125
high airspeeds and or AOAs
