Flight crew executed a missed approach when they realized aircraft was not configured properly.

Attributes
ACN	1583206
Time
Date	201810
Local Time Of Day	0601-1200
Place
Locale Reference	MMUN.Airport
State Reference	FO
Environment
Flight Conditions	VMC
Aircraft 1
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	Landing
Flight Plan	IFR
Person 1
Function	First Officer Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Type 199
Events
Anomaly	Deviation - Procedural Published Material / Policy Inflight Event / Encounter Unstabilized Approach

Narrative:

Executed a missed approach when we realized the flaps were not set to 30 for landing. Captain mentioned at around 700 ft he was slow and correcting. I focused on airspeed and failed to notice we didn't get the flaps to 30 before the too low terrain warning was heard. At that point we executed a missed approach. We received vectors around for another approach and landed.

Original NASA ASRS Text

Title: Flight crew executed a missed approach when they realized aircraft was not configured properly.

Narrative: Executed a missed approach when we realized the flaps were not set to 30 for landing. Captain mentioned at around 700 ft he was slow and correcting. I focused on airspeed and failed to notice we didn't get the flaps to 30 before the too low terrain warning was heard. At that point we executed a missed approach. We received vectors around for another approach and landed.

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.