1. Aircraft Lighting Systems Group 5 Alex Simpson Mark Gabbard 19 September 2006

2. Overview Exterior Lighting Interior Lighting Emergency Lighting

3. Exterior Lighting Specifically regulated by FAR Requires several systems for transport category aircraft Landing lights (FAR 25.1383) Position lights (FAR 25.1385-95) Anti-collision lights (FAR 25.1401)

4. Exterior Lighting Position lights Anti-collision lights Landing lights C-130 from www.af.mil

5. Landing Lights Light for night landing On wing leading edge or landing gear 28V DC or 115V AC 600W Taxi lights, 250W Boeing 757 from www.pbase.com/airlinerphotos /aviation_night

6. Position Lights Also called Navigation lights Red on left wingtip Green on right White on tail 28V DC or 115 V AC http://www.aopa.org/online_gallery/

7. Anti-Collision Lights Red or white flashing 40-100 cycles per min Must illuminate the vital areas Red beacon on vertical tail White strobes on wingtips Strobes or beacons on top and bottom of fuselage

8. Other exterior lights Cargo loading lights Wing icing detection lights (required) Cannot cause glare or reflection that impairs crew (FAR 25.1403) C-17 from www.af.mil

9. Interior Lighting Cockpit lighting Instrument lighting Cabin lighting

10. Cockpit Lighting Instrument lighting Must illuminate each essential instrument and switch Direct rays must be shielded from pilot’s eyes Must provide dimming control A340 cockpit from www.mmlane.com/flying/

11. Cockpit Lighting Interior lights to allow crew to perform other functions Not regulated Often red to preserve night vision 767 Cockpit from www.boeing.com

12. Cabin Lights Varies significantly by aircraft type and purpose Usually overhead fluorescent lights 28 volts DC 767 cabin from www.boeing.com

13. Emergency Lighting Required by FAR 25.812 Must include exit marking signs, general cabin illumination, floor escape path lighting, and exterior emergency lighting Must be battery powered and separate from main electrical system

14. Conclusion Exterior Lighting Interior Lighting Emergency Lighting

15. References Federal Aviation Regulations http://www.airweb.faa.gov/Regulatory_ and_Guidance_Library/rgFAR.nsf Pallett, E. H. J. Aircraft Electrical Systems. Longman Scientific & Technical. 1987. Eisman, T. K. et.al. Aircraft Electricity and Electronics. McGraw-Hill. 1989.

16. QUESTIONS?