C-17 first officer reported they received a terrain warning while on final approach; they executed a...

Attributes
ACN	1083106
Time
Date	201304
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.TRACON
State Reference	US
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Make Model Name	Globemaster (C-17)
Flight Phase	Initial Climb
Route In Use	Other ILS
Flight Plan	IFR
Person 1
Function	Pilot Flying First Officer
Qualification	Flight Crew Instrument Flight Crew Multiengine Flight Crew Air Transport Pilot (ATP) Flight Crew Flight Instructor
Experience	Flight Crew Last 90 Days 40 Flight Crew Total 4500 Flight Crew Type 3500
Events
Anomaly	Deviation - Altitude Overshoot Deviation - Procedural Clearance Deviation - Procedural Published Material / Policy Inflight Event / Encounter Unstabilized Approach Inflight Event / Encounter CFTT / CFIT

Narrative:

On approach to ILS; vectored in high and tight. After localizer capture; aggressive descent was required to capture the glideslope. This aggressive vvi towards the ground caused the terrain awareness warning system (taws) to activate. In IMC; at the same time the terrain warning went off; we lost all ILS signal capability on both sides; to include flight directors. As a gut reaction to a terrain warning (taws; not GPWS) I performed an aggressive go-around and blew through the missed approach altitude (1;500 ft; then 3;000 ft MSL) by about 1;100 ft; eventually leveling off at 4;150 ft MSL; flustered with a hand-full of airplane. Tower was notified and they passed the word to approach; who thankfully said 4;000 ft was fine.the sequence of events was debriefed on the ground by the crew and with [approach.] I should have continued the approach to the map and executed the missed in accordance with the published procedure.

Original NASA ASRS Text

Title: C-17 First Officer reported they received a terrain warning while on final approach; they executed a go-around and overshot the missed approach altitude by about 1;100 FT.

Narrative: On approach to ILS; vectored in high and tight. After localizer capture; aggressive descent was required to capture the glideslope. This aggressive VVI towards the ground caused the Terrain Awareness Warning System (TAWS) to activate. In IMC; at the same time the terrain warning went off; we lost all ILS signal capability on both sides; to include flight directors. As a gut reaction to a terrain warning (TAWS; not GPWS) I performed an aggressive go-around and blew through the missed approach altitude (1;500 FT; then 3;000 FT MSL) by about 1;100 FT; eventually leveling off at 4;150 FT MSL; flustered with a hand-full of airplane. Tower was notified and they passed the word to Approach; who thankfully said 4;000 FT was fine.The sequence of events was debriefed on the ground by the crew and with [Approach.] I should have continued the approach to the MAP and executed the missed in accordance with the published procedure.

Data retrieved from NASA's ASRS site as of July 2013 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.

C-17 first officer reported they received a terrain warning while on final approach; they executed a go-around and overshot the missed approach altitude by about 1;100 ft.