Daher-Socata TBM 900 Pilot's Information Manual page 529

PILOT'S OPERATING HANDBOOK
PREMATURE DESCENT ALERTING
A Premature Descent Alert (PDA) is issued when the system detects that the airplane is significantly below the
normal approach path to a runway (Figure 9.49.1).
PDA alerting begins when the airplane is within 15 Nm of the destination airport. PDA alerting ends when the
airplane is either :
- 0.5 Nm from the runway threshold
or
- at an altitude of 125 feet AGL while within 1.0 Nm of the threshold.
The aural/displayed messages associated with the PDA function are described in the table 9.49.3.
Alert Type
Premature Descent
Alert Caution (PDA)
(Amber)
Edition 1 -- October 31, 2013
Rev. 0
Figure 9.49.1 - PDA alerting threshold
PFD/MFD TAWS Page
Annunciation
TERRAIN
Table 9.49.3 - PDA alerts
"GARMIN" G1000 TAWS SYSTEM
PDA Alerting Area
" "
MFD Map Page
Pop-Up Alert
TOO LOW - TERRAIN
SUPPLEMENT 49
Aural Message
"Too low, Terrain"
Page 9.49.7