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(WARNING)
RED MESSAGE (CAUTION)
AMBER MESSAGE (ADVISORY)
CYAN MESSAGE (STATUS)
WHITE MESSAGE Require immediate crew attention. These messages are accompanied by flashing master warning, triple chime attenson with or without voice message or dedicated tone. Require immediate crew awareness and future crew action may be required in the form of alternate system selection or performance limitation. These message are accompanied by flashing master caution and a single chime. Indicate safe or normal system operation which require crew awareness, over and above the dark cockpit philosophy. Indicate minor failures or reduction in systems capability, which require no crew action.

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For AOG assistance contact:

CRC Montreal (YUL)
Quick Links

04/27/21

Message Overview:

Message Name:

ENGINE DELAYED OR HUNG START

Identifier: 800OBS001
Effectivity: Aircraft 20501 - 20999
System: Engine Starting
System Description: 80-00-00
Schematic Diagram: 80-11-00
Wiring Diagram: 80-11-01

Message Description:

A delay is observed for the light-off during an engine start. It may be accompanied by an audible boom sound.

Possible Causes:

  • Outside Air Temperature (OAT)

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

  • Honeywell SIL D201204000044 - Delayed Light-off (Booming) Starts on AS907 Engine Models

Quick Links:

Prepare for Engine Operation AMM 71-00-00-866-802
Pre-Start Checks AMM 71-00-00-866-804
Start the Engine AMM 71-00-00-866-807
Engine Shutdown Check AMM 71-00-00-866-810
Engine Post-Operation Check AMM 71-00-00-866-811

Troubleshooting Recommendations:

  1. Please see Honeywell investigation details in Honeywell SIL D201204000044 - Delayed Light-off (Booming) Starts on AS907 Engine Models.
  2. If condition applies, you may attempt an engine start using continuous ignition, detailed in SIL D201204000044.
  3. Do close out.

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