Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument; Flight Crew Multiengine
Aircraft Equipment Problem Less Severe; Flight Deck / Cabin / Aircraft Event Smoke / Fire / Fumes / Odor; Ground Event / Encounter Other / Unknown
General Evacuated
Aircraft
After an auto brakes 3 landing; we taxied to the gate. Upon arrival to the gate; we accepted ground power and shut down the number one engine. I went to the back to crack the door. Returning to the flight deck; the external power was flickering and kicking on and off. The Captain started the APU as we noticed a smell. Thinking it was associated with the electrical fluctuations we looked around the flight deck for evidence of a tripped circuit breaker. After a few moments; a mechanic came up to the aircraft to inform us the aircraft is on fire. We expeditiously exited the aircraft. Maintenance explained it was a main landing gear fire due to a hydraulic leak.Hydraulic leak in the left main landing gear well and associated fire. 'Fire' was left out of the maintenance write-up. The fire department was called and responded. The mechanic that came on board to inform us after the fire had been fought described the aircraft as 'on fire;' but 'fire' was not communicated in the write-up.
During shutdown after block in; I noticed an acrid smell in the cockpit. My First Officer (FO) smelled the same thing; we had no cockpit indications that indicated any problems. I asked the FO to leave the jet via the stairs as I shut the aircraft down. Shortly after maintenance came into the cockpit and told me to evacuate the jet because there was a fire. Maintenance notified the ARFF (Aircraft Rescue and Fire Fighting) service and they were on the scene as I got to the foot of the steps.Per maintenance; a hydraulic leak associated with malfunctioning electrical hydraulic pump.
Flight crew reported that after parking the aircraft the main landing gear caught fire; which maintenance attributed to a malfunctioning hydraulic pump.