<< >> NASA ASRS Report 1756222, August 2020

C560XL flight crew reported a fume event during preflight which progressed to smoke pouring from avionics panel; resulting in an evacuation.

Attributes
ACN	1756222
Time
Date	202008
Local Time Of Day	0601-1200
Place
Locale Reference	LAX.Airport
State Reference	CA
Environment
Flight Conditions	VMC
Aircraft 1
Make Model Name	Citation Excel (C560XL)
Operating Under FAR Part	Part 121
Flight Phase	Parked
Flight Plan	IFR
Person 1
Function	Pilot Flying Captain
Qualification	Flight Crew Instrument Flight Crew Multiengine Flight Crew Air Transport Pilot (ATP)
Person 2
Function	First Officer Pilot Flying
Qualification	Flight Crew Multiengine Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument
Events
Anomaly	Aircraft Equipment Problem Less Severe Flight Deck / Cabin / Aircraft Event Smoke / Fire / Fumes / Odor

Narrative:

I was sitting in cabin discussing unrelated maintenance issue with maintenance control. First officer (first officer) was in cockpit preforming preflight and startup checks. As the APU was starting I smelled an electrical odor and asked my first officer if he smelled it. I then looked up and saw smoke coming from above and below instrument panel. Told him to shut down and get out. Aircraft shutdown per QRH memory items and evacuated. Smoke began to dissipate immediately after power removed. Confirmed no visible fire. Battery disconnected and aircraft secured. Avionics bay opened and small amount of smoke vented no visible fire. Aircraft secured. Notified flight control; maintenance control and assistant chief pilot. No passengers were on board. No injuries to crew. No visible damage to aircraft.suggestions: unknown without defined cause.

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Original NASA ASRS Text

Title: C560XL flight crew reported a fume event during preflight which progressed to smoke pouring from Avionics panel; resulting in an evacuation.

Narrative: I was sitting in cabin discussing unrelated maintenance issue with Maintenance Control. FO (First Officer) was in cockpit preforming preflight and startup checks. As the APU was starting I smelled an electrical odor and asked my FO if he smelled it. I then looked up and saw smoke coming from above and below instrument panel. Told him to shut down and get out. Aircraft shutdown per QRH memory items and evacuated. Smoke began to dissipate immediately after power removed. Confirmed no visible fire. Battery disconnected and aircraft secured. Avionics bay opened and small amount of smoke vented no visible fire. Aircraft secured. Notified Flight Control; Maintenance Control and Assistant Chief Pilot. No passengers were on board. No injuries to crew. No visible damage to aircraft.Suggestions: Unknown without defined cause.

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.