Corporate jet pilot reported a cftt event during approach to csg.

Attributes
ACN	1642434
Time
Date	201905
Local Time Of Day	0001-0600
Place
Locale Reference	CSG.Tower
State Reference	GA
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Light Transport Low Wing 2 Turbojet Eng
Operating Under FAR Part	Part 91
Flight Phase	Initial Approach
Flight Plan	IFR
Person 1
Function	Captain Pilot Flying
Qualification	Flight Crew Instrument Flight Crew Air Transport Pilot (ATP) Flight Crew Multiengine
Events
Anomaly	Aircraft Equipment Problem Less Severe Deviation - Procedural Published Material / Policy Inflight Event / Encounter CFTT / CFIT

Narrative:

Csg was VFR and I requested an RNAV GPS 24 for practice. I used cdfa procedures; which we briefed. At 3;000 feet; armed VNAV and set dda to 1;090 feet (940+100 high mins + 50=1090.) set aad to 1;100 feet. First officer was talking to csg traffic and approach and I got distracted with my ipad which I had accidentally put on freeze on airport page. We got 'terrain; terrain' warning and I noticed we were at about 1;700 feet and descending. I added power and climbed up to the VASI slope. Landed plane normally.not to let guard down in visual conditions and fly the plane. Watch out for distractions. Cross check instruments and not rely on automation completely.

Original NASA ASRS Text

Title: Corporate jet pilot reported a CFTT event during approach to CSG.

Narrative: CSG was VFR and I requested an RNAV GPS 24 for practice. I used CDFA procedures; which we briefed. At 3;000 feet; armed VNAV and set DDA to 1;090 feet (940+100 high mins + 50=1090.) Set AAD to 1;100 feet. FO was talking to CSG traffic and approach and I got distracted with my iPad which I had accidentally put on freeze on airport page. We got 'Terrain; Terrain' warning and I noticed we were at about 1;700 feet and descending. I added power and climbed up to the VASI slope. Landed plane normally.Not to let guard down in visual conditions and fly the plane. Watch out for distractions. Cross check instruments and not rely on automation completely.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.