Emb-175 flight crew reported executing a go-around following an unstabilized approach into stl. A wa...

Attributes
ACN	1755343
Time
Date	202008
Place
Locale Reference	STL.TRACON
State Reference	MO
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	EMB ERJ 170/175 ER/LR
Operating Under FAR Part	Part 121
Flight Phase	Initial Approach
Flight Plan	IFR
Person 1
Function	Pilot Flying First Officer
Qualification	Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument Flight Crew Multiengine
Person 2
Function	Captain Pilot Not Flying
Qualification	Flight Crew Instrument Flight Crew Air Transport Pilot (ATP) Flight Crew Multiengine
Events
Anomaly	Deviation - Speed All Types Inflight Event / Encounter Wake Vortex Encounter Inflight Event / Encounter Unstabilized Approach

Narrative:

We were on approach for runway 31R; on a 45 base into final; at 6000 ft assigned 250 knots abeam exale fix following a 737 that was causing wake turbulence. We informed ATC that we were getting hit by wake turbulence; so he assigned a lower speed 170 and a lower altitude 2500. He asked us if we had the airport in sight and we went visual. At this point I pushed flch and manual speed to decelerate and we got left high. When I turned the autopilot off to manually fly it I started a descent [and] autothrottles got disconnected while I was on the approach. [I] lost awareness of the airspeed. I was doing 145 when approach speed was 135 at 500 and I was high so pilot monitoring called missed approach; autothrottles disconnected again on missed approach. The missed approach was flown fine. Came back and landed runway 31R with more than 50 minutes of reserve.I should have disconnected the autopilot and descended for a lower altitude earlier and continuously monitor my airspeed as well. Should [have] called flaps 2.

Original NASA ASRS Text

Title: EMB-175 flight crew reported executing a go-around following an unstabilized approach into STL. A wake turbulence encounter was cited as contributing.

Narrative: We were on approach for runway 31R; on a 45 base into final; at 6000 ft assigned 250 knots abeam EXALE FIX following a 737 that was causing wake turbulence. We informed ATC that we were getting hit by wake turbulence; so he assigned a lower speed 170 and a lower altitude 2500. He asked us if we had the airport in sight and we went visual. At this point I pushed FLCH and manual speed to decelerate and we got left high. When I turned the autopilot off to manually fly it I started a descent [and] autothrottles got disconnected while I was on the approach. [I] lost awareness of the airspeed. I was doing 145 when approach speed was 135 at 500 and I was high so pilot monitoring called missed approach; autothrottles disconnected again on missed approach. The missed approach was flown fine. Came back and landed runway 31R with more than 50 minutes of reserve.I should have disconnected the autopilot and descended for a lower altitude earlier and continuously monitor my airspeed as well. Should [have] called flaps 2.

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.

Emb-175 flight crew reported executing a go-around following an unstabilized approach into stl. A wake turbulence encounter was cited as contributing.