Narrative:

After completing a normal pushback; and engine startup; we sat parked for several minutes with both engines at stable idle attempting to get the push crew to give us a salute. Even after flashing my taxi light several times; as well as flashing the left turnoff and landing lights; the push crew just stared back at us. They wouldn't release us with a salute; no matter how many times I flashed the lights. This went on for approximately four to five minutes. I instructed one of the international relief officer's to call operations to contact the push crew to get us released. Clearly the push crew didn't understand why we were not starting our taxi out. Shortly after the international relief officer contacted operations; and with the APU still running; the APU fire warning activated; along with the EICAS; master warning; and fire bell. I instructed the first officer to run the APU fire checklist. He did so which included discharging the APU fire bottle after the handle was pulled. Approximately ten seconds after the APU fire warning activated the left engine fire warning activated. Both engines had been at stable idle for at least four minutes; and with no ground crew still plugged in to give me any feedback; I decided the safest and only prudent course of action was to instruct the first officer to complete the left engine fire checklist. I ordered the other international relief officer to go back into the cabin and inspect the engine for signs of fire or smoke. Before the checklist was started; I decided to stabilize; and turned off the left fuel control switch and pulled the left engine fire handle. When the international relief officer returned from his cabin inspection he stated he saw no signs of smoke or fire. After we completed both the APU and left engine fire checklists I decided to declare an mayday and requested ground control to roll their fire trucks to inspect our aircraft. They did so and found no evidence of fire or smoke. Both the APU and left engine fire warning lights stayed illuminated even after the checklists had been completed and all fire bottles discharged. Eventually we were towed to a remote gate. The flight canceled and the passengers were taken off and bused away after roll up stairs were provided. We were informed the aircraft was newly put into service. Dispatch was notified via sat phone.

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Original NASA ASRS Text

Title: B777 flight crew reported left engine and APU fire annunciations illuminated after pushback from gate.

Narrative: After completing a normal pushback; and engine startup; we sat parked for several minutes with both engines at stable idle attempting to get the push crew to give us a salute. Even after flashing my taxi light several times; as well as flashing the left turnoff and landing lights; the push crew just stared back at us. They wouldn't release us with a salute; no matter how many times I flashed the lights. This went on for approximately four to five minutes. I instructed one of the IRO's to call operations to contact the push crew to get us released. Clearly the push crew didn't understand why we were not starting our taxi out. Shortly after the IRO contacted Operations; and with the APU still running; the APU fire warning activated; along with the EICAS; Master warning; and fire bell. I instructed the First Officer to run the APU fire checklist. He did so which included discharging the APU fire bottle after the handle was pulled. Approximately ten seconds after the APU fire warning activated the left engine fire warning activated. Both engines had been at stable idle for at least four minutes; and with no ground crew still plugged in to give me any feedback; I decided the safest and only prudent course of action was to instruct the First Officer to complete the left engine fire checklist. I ordered the other IRO to go back into the cabin and inspect the engine for signs of fire or smoke. Before the checklist was started; I decided to stabilize; and turned off the left fuel control switch and pulled the left engine fire handle. When the IRO returned from his cabin inspection he stated he saw no signs of smoke or fire. After we completed both the APU and left engine fire checklists I decided to declare an Mayday and requested Ground control to roll their fire trucks to inspect our aircraft. They did so and found no evidence of fire or smoke. Both the APU and left engine fire warning lights stayed illuminated even after the checklists had been completed and all fire bottles discharged. Eventually we were towed to a remote gate. The flight canceled and the passengers were taken off and bused away after roll up stairs were provided. We were informed the aircraft was newly put into service. Dispatch was notified via Sat phone.

Data retrieved from NASA's ASRS site 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.