Date: 202105
Local time of day: 0601-1200
Location: ZZZ.TRACON, US
Flight conditions: VMC
Aircraft: Large Transport; Low Wing; 2 Turbojet Eng
Operator: Air Carrier
Operating under: Part 121
Flight plan: IFR
Mission: Passenger
Flight phase: Climb
Airspace: Class A ZZZ; Class E ZZZ
ATC / advisory: TRACON ZZZ
Second aircraft: Sail Plane
Reporter organization: Air Carrier
Reporter function: First Officer; Pilot Not Flying
Reporter qualification: Flight Crew Multiengine; Flight Crew Air Transport Pilot (ATP)
Human factors: Workload; Time Pressure; Distraction
Second reporter function: Pilot Flying; Captain
Anomaly: Conflict NMAC; Inflight Event / Encounter Other / Unknown
Detector: Person Flight Crew
Result: Flight Crew Requested ATC Assistance / Clarification; Flight Crew Took Evasive Action
Contributing factors: Aircraft; Human Factors
Primary problem: Aircraft

Narrative: After departing we were flying the ZZZZZ departure.  At around ZZZZZ1 intersection on the departure; at approximately 18;000 feet; the Captain (Pilot Flying) called the transition; followed by ATC giving us a frequency change. As I (Pilot Monitoring) looked down on the aisle stand to change the radio frequency; I heard the Captain say something while there was a sharp right rolling movement of the aircraft.  I looked up and saw a red AUTOPILOT disconnect EICAS message; and the Captain with his hands on the control wheel.  I had assumed that we had experienced wind shear; being in the terrain that we were located.  After the Captain appeared to have the situation under control; I asked the Captain if he wanted me to report the incident; to which he replied yes.  I reported to the controller that we had hit a strong gust on departure; which he acknowledged.  The Captain then said something along the lines of did you see that?  We almost hit a glider.  He had disconnected the autopilot and rolled the aircraft to avoid the glider.I believe I said; is that what happened; to which he said yes.  I can't remember my verbiage; but I believe I then reported to ATC that we had almost hit a glider. ATC acknowledged; and then passed along to the aircraft behind us the information.  At no point did we receive any type of TCAS alert; nor any warning from ATC about a target in the vicinity.  After that last transmission to ATC during which the incident happened; we switched frequencies and continued on with the flight uneventfully.  Later when we were over the ZZZ track; we spoke to the aircraft behind us but they said they had not seen the glider.  Looking back with hindsight; I should have reported the incident to the controller by saying; 'I wish to report a near-midair collision.'  I cannot say enough about Captain's quick thinking and airmanship to bank away from that glider and avoid what would have potentially been an air disaster.


Second narrative: During climbout from ZZZ on the ZZZZZ departure at an altitude of about 17;500 feet we encountered a glider. The Pilot Flying turned off the autopilot and banked right to avoid a possible collision. This event occurred just as we were given a frequency change to Departure Control. At no time during this event was there any traffic depicted on the TCAS nor was there any traffic alerts given by ATC. The Pilot Monitoring passed this information to the controller before switching to our new frequency.


Synopsis: Air Carrier flight crew reported a NMAC with a glider.