B737 flight crew reported a right engine fire after blocking in to the gate. The fire was extinguished and engine oil was observed to be leaking from the aircraft.
Synopsis
B737 flight crew reported a right engine fire after blocking in to the gate. The fire was extinguished and engine oil was observed to be leaking from the aircraft.
Narrative
Before departing ZZZ1 for ZZZ; we called Maintenance and requested an oil service due to oil in right engine of approximately 65%. Maintenance added 9 quarts of oil to the right engine. This brought oil level up to 100%. Maintenance mentioned they would be tracking that engine carefully because of recent consumption trend.Flight XXX from ZZZ1 to ZZZ. (time) Takeoff from ZZZ1. (time) Landed Runway XX at ZZZ and taxied to Gate. Approximately (time) we shutdown both engines and performed the parking checklist; noting oil quantity on engine #2 of 60%. Once ground power and air were connected; we shut down the APU. (time) Cabin door opened; and passengers started deplaning. Both pilots began gathering personal items for crew change.(time) I called Maintenance to advise of the oil quantity in right engine of 60%. Maintenance asked what quantity we had when we departed ZZZ1. I advised we serviced oil in ZZZ1 and 9 quarts were added to engine No 2 bringing quantity up to 100%. Maintenance said he would contact Contract Maintenance in ZZZ and have the oil serviced and mentioned that the consumption was .993 and that was within limit of 1.2 and no logbook entry was required.At approximately (time); ground crew banged loudly on side of the cockpit. I opened the cockpit window and ground crew announced that our No 2 engine was on fire. Both pilots got into our seats and began performing the QRC engine fire checklist. During this time; several additional members of ZZZ operations came to the cockpit to advise that No 2 engine was on fire. After discharging the No 2 fire bottle and the time was hacked; the F/O (First Officer) left the cockpit to assess the status of the fire. I contacted ZZZ on ground frequency and advised them of the fire and requested assistance from the Fire Department. The F/O returned to advise that there was no longer an indication of fire. He noted a continuous drip of fluid believed to be oil. At this point; all passengers and crew had deplaned. (time) I contacted Dispatch and Maintenance to advise of the event and I made a logbook entry.During post event discussions with Maintenance; the term candling was used to describe the engine fire. If candling is a common occurrence; should ground crew and flight crew be trained to identify such hazards? What other actions could the flight crew take when there are only external indicators of an engine fire and no cockpit indications of a fire? What factors are considered in determining oil consumption limits?
Second reporter narrative
After arriving in ZZZ; we opened the main door at (time). At (time); The Captain initiated a called with Dispatch/Maintenance because in ZZZ1 the engine was serviced with oil and we were showing a significant oil drop on the #2 engine after a 1:36 hour flight from ZZZ1 to ZZZ. The #2 engine took 9 quarts in ZZZ1. The mechanic that serviced the aircraft in ZZZ1 said that the engine had taken 15 quarts of oil in the last two days. In ZZZ the APU was shutdown and ground services connected. At (time) the ground crew banged the side of the aircraft and reported #2 engine fire. Another ground crew came to the flight deck to report the engine fire. The Captain called for the QRC engine fire checklist. We executed the checklist and discharged the right bottle. The Captain called the Tower and requested the Fire Department.Ground the aircraft when a high oil consumption is taking place before the Crew experiences an engine failure due to an engine oil leak.
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Source: NASA Aviation Safety Reporting System (public domain). Reports are voluntary submissions and are not verified by NASA.