Narrative:

We had passengers on board the aircraft on the ramp with engines running. We then noticed an amber auto pilot number 2 fail light. We proceeded to check; pull then reset the appropriate mau cbs according to the checklist. This cleared the autopilot message in question. As the remainder of the other messages associated with the mau were clearing themselves I decided to press on.as we started to roll out of the blocks we noticed the amber l-r engine maint requred light did not extinguish. Because we did not have that particular light on before pulling cbs; I concluded it was a result of the cbs being pulled that caused the light rather than an actual new issue. I was aware we could not depart with that light illuminated. I was also aware the checklist calls for a shutdown of the engines. In an effort not to alarm the passengers or delay the flight I [decided I] would attempt a technique I was taught by my previous chief pilot to quick reset the engine computers and clear the faults. I had seen him perform this maneuver in the past to clear such messages. If it did not work I could then shut down the engines and seek other alternatives.I quick cycled the start switches from run to stop then back to run. It seemed to have worked in clearing the messages on both engines; however the right engine shut down without a relight. The left engine ran fine and with no messages. The remaining fuel in the right engine ignited causing a tailpipe fire that was brought to our attention by line service. There were no fire indications in the cockpit. I immediately called for an evacuation as I shut the aircraft down.the passengers were evacuated without any injuries and the aircraft was shut down. The aircraft suffered damage to the right thrust reverser due to the fire. This event taught me to always adhere to the QRH (checklist) regardless of what you have been shown or taught otherwise.

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Original NASA ASRS Text

Title: The Captain of a GLF-550 attempted to extinguish an Amber Maintenance Required warning light by rapidly moving the engine start switches from run to off and back to run. The warning light went out; but one engine did not restart and instead; a tail pipe fire ignited triggering an evacuation on the ramp.

Narrative: We had passengers on board the aircraft on the ramp with engines running. We then noticed an amber auto pilot number 2 fail light. We proceeded to check; pull then reset the appropriate MAU CBs according to the checklist. This cleared the autopilot message in question. As the remainder of the other messages associated with the MAU were clearing themselves I decided to press on.As we started to roll out of the blocks we noticed the Amber L-R Engine Maint Requred light did not extinguish. Because we did not have that particular light on before pulling CBs; I concluded it was a result of the CBs being pulled that caused the light rather than an actual new issue. I was aware we could not depart with that light illuminated. I was also aware the checklist calls for a shutdown of the engines. In an effort not to alarm the passengers or delay the flight I [decided I] would attempt a technique I was taught by my previous Chief Pilot to quick reset the engine computers and clear the faults. I had seen him perform this maneuver in the past to clear such messages. If it did not work I could then shut down the engines and seek other alternatives.I quick cycled the start switches from run to stop then back to run. It seemed to have worked in clearing the messages on both engines; however the right engine shut down without a relight. The left engine ran fine and with no messages. The remaining fuel in the right engine ignited causing a tailpipe fire that was brought to our attention by line service. There were no fire indications in the cockpit. I immediately called for an evacuation as I shut the aircraft down.The passengers were evacuated without any injuries and the aircraft was shut down. The aircraft suffered damage to the right thrust reverser due to the fire. This event taught me to always adhere to the QRH (checklist) regardless of what you have been shown or taught otherwise.

Data retrieved from NASA's ASRS site as of April 2012 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.