@Yobbo - 747-236 RR Powered Photograph. Nice picture. FYI depending on the situation these flames from the exhaust of the #2 engine can also indicate that the crew have not stowed the reverser before 40kts. Note the reverser of this engine is deployed. At low speed the air being blown forwards causes recirculation/airflow disturbance at the inlet, which in turn causes the engine to suffer a compressor surge, producing flames from the exhaust. The RTO in this case may not have been for a non-engine related issue. Flames from the exhaust can be for more reasons than just an engine failure.