Altitude - normal flight - plus or minus 100 feet.
Simulated single engine (if you decide to do the flight in a twin) - plus/minus 150 feet.
Limited Panel Instrument Flying - plus/minus 200 feet.
Radio aid tracking - plus/minus 5 degrees
Heading - all engines - plus/minus 10 degrees
Simulated engine failure - plus/minus 15 degrees
Limited Panel Instrument - plus/minus 15 degrees
Speeds: (knots)
Take off (Vr) plus 5, minus zero
Climb & Approach plus/minus 10
Vat/Vref plus five, minus zero
Cruise, plus/minus ten
Limited Panel, plus/minus ten
Simulated engine failure, plus ten, minus five
Blue Line, plus/minus five
maximum error at any time - plus/minus ten