I?m very happy to see the positive responses above from those willing to learn. In response to an earlier request from an operator who did experience an unexpected cabin evacuation in response to an engine tailpipe fire. Video footage of what these may look like were provided for a training video and incorporated in the FAA Engine & Propeller Directorate report on PSM + ICR (Propulsion System Malfunction + Inappropriate Crew Response) report found under the following link.
http://www.faa.gov/certification/air...ial_topics.htm
The narration words used to support this video are provided below.
I?m sure that any updates to your crew training requirements will benefit from this and other similar material available from this website.
?Engine torching? or ?tailpipe fires? mostly occur during an abnormal engine start, but they may also occur after shutdown, or during other ground operations.
Although there may be no cockpit engine instrument indications, these events can be very spectacular when viewed from the ramp or cabin, and have been confused with an actual engine fire. The torching may be of short duration or it may last for several seconds. Note that the flame is confined to the tailpipe.
Flames may turn upward and threaten the wing if no airflow is maintained through the engine. And in some cases an EGT increase may be indicated on the flight deck. Simply cutting fuel flow while continuing to motor the engine normally extinguishes the flames. The flight crew depends on ground personnel to identify engine torching.
If you are told of an engine fire without any flight deck indications of a fire, follow the ?engine torching? procedure as outlined in your flight manual. This procedure will direct you to motor the engine and extinguish the flames; the regular fire procedure will not.
Do not perform the ?engine fire? procedure unless a fire warning indication occurs,
Executing the regular fire procedure may disable bleed air to the engine starter and prevent you from being able to motor the engine to blow out the tailpipe fire.
There have been cases where flight attendants or passengers have initiated evacuations due to engine torching. These unnecessary evacuations can be minimized by prompt flight deck and cabin crew coordination to provide passengers with pertinent information and to alleviate their concerns.