Large Transport; Low Wing; 2 Turbojet Eng
Flight Crew Air Transport Pilot (ATP)
Workload; Time Pressure; Situational Awareness
Inflight Event / Encounter Weather / Turbulence; Inflight Event / Encounter Fuel Issue
Air Traffic Control Issued New Clearance; Flight Crew Diverted; Flight Crew Executed Go Around / Missed Approach; Flight Crew Requested ATC Assistance / Clarification
Weather
Below 500 feet on approach to RWY 23L at ZZZ we encountered windshear which caused the approach to become unstable and we performed a go-around and climbed to 3;000 feet. At that point we were bingo fuel so we requested clearance to our alternate which was ZZZ1. ATC was very busy and couldn't grant our request for climb. We [requested priority handling] for fuel at that point in order to receive traffic priority. Our climb request was then granted. The rest of the flight to ZZZ1 was uneventful.There turned out to be unforecast winds at ZZZ which caused a lot of vectoring and other delaying tactics by ATC which depleted the fuel reserves of arriving aircraft. If we had had more fuel onboard we could have held until the winds abated.[Company] flights could carry more fuel.
On final approach to land; experienced significant windshear. Unstable approach conditions. Captain performed go around. Instructed to fly RWY heading and maintain 3;000 feet. Now in bingo fuel state. Requested climb and must divert to ZZZ1. Denied climb due to busy conditions (weather; congestion; other crews being vectored). Told ATC we must climb. Diverted to ZZZ1 with further instructed climb to FL290.
An air carrier flight crew reported encountering significant wind shear while conducting an approach. They executed a missed approach and; due to a critical fuel state; requested a traffic priority and diverted to an alternate airport.