An erj-175 pilot reported windshear on final which resulted in a 20 kt increase. Speed brakes and la...

Narrative:

Over the 10 DME fix on the ILS; we had a strong rain shaft at an 8 DME from the runway that we had to fly through which looked like it was stable but had very strong 20Kts+ windshear gain. Before we entered the PF (pilot flying) determined to try to get configured partially for the approach which is also SOP and I had no objections we selected flaps 1 at 210kts and after they were set we entered the rain. As we descended I called out rising airspeed; at that time the PF already had spoilers deployed and thrust levers at idle; he called for the gear after we couldn't stabilize the airspeed and reached around 237 kts before the gear was able to assist in slowing the aircraft. The flaps continued to work for the rest of the approach and had no issues getting on the ground. The weather was due to the developing nor-easter in the area and we were the first aircraft to report the 20kt+ gain on final.we could've called for the gear sooner when I noticed the speed increase but not sure if that would have even stopped the gain it jumped quickly and suddenly from 210 to 228 to 238.

Original NASA ASRS Text

Title: An ERJ-175 pilot reported windshear on final which resulted in a 20 kt increase. Speed brakes and landing gear were extended to regain a stable profile for landing.

Narrative: Over the 10 DME fix on the ILS; we had a strong rain shaft at an 8 DME from the runway that we had to fly through which looked like it was stable but had very strong 20Kts+ windshear gain. Before we entered the PF (Pilot Flying) determined to try to get configured partially for the approach which is also SOP and I had no objections we selected Flaps 1 at 210kts and after they were set we entered the rain. As we descended I called out rising airspeed; at that time the PF already had Spoilers deployed and thrust levers at IDLE; he called for the gear after we couldn't stabilize the airspeed and reached around 237 kts before the gear was able to assist in slowing the aircraft. The flaps continued to work for the rest of the approach and had no issues getting on the ground. The weather was due to the developing Nor-Easter in the area and we were the first aircraft to report the 20kt+ gain on final.We could've called for the gear sooner when I noticed the speed increase but not sure if that would have even stopped the gain it jumped quickly and suddenly from 210 to 228 to 238.

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	1468984
Time
Date	201707
Local Time Of Day	0001-0600
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	IMC
Light	Night
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	First Officer Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Deviation - Procedural Published Material / Policy Deviation - Speed All Types Inflight Event / Encounter Unstabilized Approach Inflight Event / Encounter Weather / Turbulence

An erj-175 pilot reported windshear on final which resulted in a 20 kt increase. Speed brakes and landing gear were extended to regain a stable profile for landing.