<< >> NASA ASRS Report 1532537, April 2018

B737NG flight crew reported shutting down the APU at the gate during preflight when they received an APU fire warning.

Attributes
ACN	1532537
Time
Date	201804
Local Time Of Day	0001-0600
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Dawn
Aircraft 1
Make Model Name	B737 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	Other Parked pre-departure
Component
Aircraft Component	APU
Person 1
Function	Pilot Flying Captain
Qualification	Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Total 4372 Flight Crew Type 2703
Person 2
Function	Pilot Not Flying First Officer
Qualification	Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 145 Flight Crew Type 3165
Events
Anomaly	Aircraft Equipment Problem Less Severe Flight Deck / Cabin / Aircraft Event Smoke / Fire / Fumes / Odor

Narrative:

During preflight; after approximately 5 minutes of run time; the APU shut down. Ground power was put back on the aircraft. Then the fire bell came on with a lighted APU fire handle. Performed the APU fire actions; the light went out. I started an evacuation with the passengers exiting door 1L. The first officer called operations to get the fire trucks rolling. All passengers and crew exited the aircraft without any issues.

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Original NASA ASRS Text

Title: B737NG flight crew reported shutting down the APU at the gate during preflight when they received an APU fire warning.

Narrative: During preflight; after approximately 5 minutes of run time; the APU shut down. Ground power was put back on the aircraft. Then the fire bell came on with a lighted APU fire handle. Performed the APU fire actions; the light went out. I started an evacuation with the passengers exiting door 1L. The FO called Operations to get the fire trucks rolling. All passengers and crew exited the aircraft without any issues.

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.