• Used behind instrument panel lenses to indicate system status, where moderate brightness and compact size are needed.
  
  

• Provides localized illumination in cabin reading lights or overhead consoles, where small form-factor lamps deliver sufficient light without excessive heat.
  
  

• Installed in access panels or inspection lights, offering enough light for ground crews to read gauges or check small components during checks.
  
  

• Serves as a spare or backup lamp in critical systems, ensuring that if a primary lamp fails, a quick replacement restores functionality.

• How do I install or replace this lamp?

Power down the circuit, allow any existing lamp to cool, then align the bayonet pins with the socket slots, push in, and twist until locked. 

• How should I store these lamps?

Store in original packaging in a clean, dry area at a moderate temperature, away from direct sunlight or strong vibrations. Keep certification paperwork with the lamps for traceability.

• How do I know when to replace the lamp?

Monitor operating hours: with a 500-hour average life, schedule replacement before or at the end of the rated life. Also, replace upon any signs of dimming, flickering, or filament instability. Log hours in maintenance records to track usage.