Date: 201807
Local time of day: 1201-1800
Location: ZZZ.Airport, US
Flight conditions: VMC
Aircraft: B767 Undifferentiated or Other Model
Operator: Air Carrier
Operating under: Part 121
Mission: Passenger
Flight phase: Landing
Airspace: Class B ZZZ
ATC / advisory: TRACON ZZZ
Aircraft component: Landing Gear
Component problem: Malfunctioning
Reporter organization: Air Carrier
Reporter function: Captain; Pilot Flying
Reporter qualification: Flight Crew Instrument; Flight Crew Air Transport Pilot (ATP); Flight Crew Multiengine
Human factors: Situational Awareness
Anomaly: Aircraft Equipment Problem Critical; Deviation / Discrepancy - Procedural Published Material / Policy; Inflight Event / Encounter Fuel Issue
Detector: Person Flight Crew
When detected: In-flight
Result: Air Traffic Control Provided Assistance; Aircraft Aircraft Damaged; Flight Crew Executed Go Around / Missed Approach; Flight Crew Landed in Emergency Condition; Flight Crew Requested ATC Assistance / Clarification
Contributing factors: Aircraft
Primary problem: Aircraft

Narrative: On climbout of ZZZ and approaching FL350 we heard a loud bang and felt a strong jolt. It sounded as though something had struck the aircraft from outside. All engine instruments read normal and there was no airframe vibration so we pressed on to ZZZ1. On arriving into ZZZ1 during the approach I as the pilot flying called for 'gear down.' There was another violent jolt and we received a GEAR DISAGREE warning and proceeded to do a go-around. During the go-around I used the standard go around callouts and called for 'Gear up.' As soon as I called for the gear up I mentioned to the FO (First Officer) that 'no; we should leave the gear down' but it was too late as he immediately had raised the gear and we felt another violent jolt. ATC climbed us to 5;000 feet where I handed the aircraft to the FO so that I could run the QRH. I ran the QRH and it called for Landing Gear Lever down and Accomplish Normal Landing. The GEAR DISAGREE light extinguished but it was here I noted the R SIDE BRACE light illuminated. I quickly ran thru the (R) SIDE BRACE QRH but was becoming concerned about the fuel remaining as we were down to 6;000 pounds at this point. I instructed the FO we needed to get the aircraft on the ground and initiate the approach with ATC. The FO was still flying the aircraft and handling communications with ATC. I made a quick call to the Flight Attendant Lead and also a brief PA to the passengers explaining the gear problem. ATC had us fly over ZZZ2 Tower and they reported all gear appeared down. We proceeded to land in ZZZ1. Landing was normal but as I was unsure of the status of the gear I informed Tower that we were disabled on the runway.Later I was told that I did not give the Flight Attendants sufficient time to prepare the cabin and that I did not give the 'Brace' signal before landing. I did call and inform the Flight Attendants after the Go Around of our current gear condition after we leveled at 5;000 feet and before attempting to call dispatch. I attempted numerous contacts with Dispatch via Satcom; Telephone; and VHF radio. I answered numerous calls from various Flight Attendants via intercom to the cockpit while attempting to run the QRH. Finally; after noting our fuel quantity at 6;000 pounds and knowing we were to initially land with 10;600 pounds I was focused on getting the aircraft on the ground. I spoke with the lead Flight Attendant and informed her we were beginning our approach.




Synopsis: B767 Captain reported that each time the gear was raised or lowered there was a loud bang and a strong jolt.