Small Aircraft; Low Wing; 1 Eng; Retractable Gear
Flight Crew Flight Instructor; Flight Crew Instrument; Flight Crew Multiengine
Flight Crew Last 90 Days 170; Flight Crew Total 5000; Flight Crew Type 160
Troubleshooting
Deviation - Track / Heading All Types; Deviation / Discrepancy - Procedural Published Material / Policy; Inflight Event / Encounter CFTT / CFIT; Inflight Event / Encounter Unstabilized Approach; Inflight Event / Encounter Weather / Turbulence
Air Traffic Control Issued Advisory / Alert; Air Traffic Control Provided Assistance; Flight Crew Became Reoriented; Flight Crew Returned To Clearance
Human Factors; Environment - Non Weather Related; Weather
On the ILS 19C IAD; inside the FAF (FEMKO); I experienced wind shear which brought me below the glide slope enough for Tower to provide a low altitude alert (LAA). I corrected to glide slope; but then experienced wind shear again; and received a second LAA. I corrected and then broke out of IMC to land the aircraft. The wind shear was unexpected as it was not forecast or reported and the flight up to that point was fairly calm. To prevent a reoccurrence I could have gone missed at the first wind shear indication; instead of flying through it. By resetting the approach from the beginning knowing wind shear existed instead of continuing it; I could have either avoided it on a subsequent approach and/or been better prepared to handle it the second time around. If it persisted I could have flown another approach at IAD or gone to an alternate airport.
Small aircraft pilot reported a low altitude alert on final; a wind shear; and then a second low altitude alert and safely landed the aircraft.