Regional jet captain reported receiving a terrain warning departing iah runway 15L on the gumby 3 de...

Narrative:

Departed 15L on the gumby three and as we commencing the first turn towards crtmn we received 'too low terrain' warnings. The SID indicates climb to 600 feet and I'm pretty sure we were at 600 or pretty close. Maybe I wasn't aggressive enough on the climb rate; I didn't brief the 600 because I was just planning on following the guidance. In any case if I didn't climb aggressive enough or did something to cause it; I would like to know that information if it's in flight operations quality assurance (foqa). Otherwise; there is something not right in the terrain database that could be worrisome if you are ever climbing out in IMC some night. Looking at the approach plate to runway 33 I see a tall tower out at the marker; so maybe it requires more of an aggressive climb than what I was performing; that is if the terrain warning is was actually not spurious.

Original NASA ASRS Text

Title: Regional Jet Captain reported receiving a terrain warning departing IAH Runway 15L on the GUMBY 3 departure which requires a minimum climb. The Captain reported he may not have been aggressive enough on the climb rate.

Narrative: Departed 15L on the GUMBY THREE and as we commencing the first turn towards CRTMN we received 'too low terrain' warnings. The SID indicates climb to 600 feet and I'm pretty sure we were at 600 or pretty close. Maybe I wasn't aggressive enough on the climb rate; I didn't brief the 600 because I was just planning on following the guidance. In any case if I didn't climb aggressive enough or did something to cause it; I would like to know that information if it's in Flight Operations Quality Assurance (FOQA). Otherwise; there is something not right in the terrain database that could be worrisome if you are ever climbing out in IMC some night. Looking at the approach plate to Runway 33 I see a tall tower out at the marker; so maybe it requires more of an aggressive climb than what I was performing; that is if the terrain warning is was actually not spurious.

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.

Attributes
ACN	1404584
Time
Date	201611
Local Time Of Day	0601-1200
Place
Locale Reference	IAH.Airport
State Reference	TX
Environment
Flight Conditions	VMC
Aircraft 1
Make Model Name	Medium Large Transport
Operating Under FAR Part	Part 121
Flight Phase	Climb
Route In Use	SID GUMBY3
Flight Plan	IFR
Person 1
Function	Captain Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Type 10000
Events
Anomaly	Inflight Event / Encounter CFTT / CFIT

Regional jet captain reported receiving a terrain warning departing iah runway 15L on the gumby 3 departure which requires a minimum climb. The captain reported he may not have been aggressive enough on the climb rate.