Emergency Lighting

Emergency Egress Lighting

The 84055 Series of exterior Emergency Egress Lights are robust lighting units designed to provide safe exit path marking on the exterior of the aircraft. Commonly referred to as an Overwing or Underwing Light, the light is designed to meet the US FAA FAR requirements of .03 foot-candles over a twenty-four inch square. Its rugged potted design allows it to be impervious to supersonic speeds and harsh temperature ranges. A new pressure differential variant will permit the light to be installed in pressurized locations. Drawing a mere 1/2 amp, this is the design of choice when emergency battery supplies are limited.

84055-2-and-5385-00 OW UW Light

Product Information


  • Solid aluminum and acrylic construction
  • Bonding stud for composite mounting
  • Floating nut plates
  • High reliability with over 20,000 hours MTBF
  • Designed to be mounted behind a fairing lens or in the airstream
  • Self-contained power supply, no external power supply is necessary
  • D38999 Mil type connector for corrosion resistance
  • Meets EMI and lightning test requirements


  • FAR 14CFR 25.812
  • RTCA DO-160/E


Input:     22-28VDC

.55 Amperes (maximum)


.44 pounds (200 grams)

Overall Dimensions

Height   1.65 inches (4.2 cm)

Width    3.70 inches (9.4 cm)

Depth    0.84 inches (2.1 cm)

egress lighting dimensions

testing protocols egress lighting

Ordering Information

Please contact us for technical inquiries and ordering information.

Escape Slide Lighting

The ESL System is an independently powered emergency lighting system that provides illumination along the escape slide during evacuation

ESL-BAS Datasheet

Product Information

The Escape Slide Lighting System and associated BAS Power Units is an emergency lighting system that provides illumination and directional guidance for evacuees along the escape slide surface and for the landing area where ground contact is made.

The BAS Power Unit provides power to the lighting assemblies after the activation switch pin has been automatically pulled during slide/raft deployment.



  • Automatic activation
  • Independently powered
  • Multiple configurations
  • Test without deployment


Ordering Information


Part Number

Lamp Harness Lighting Assemblies


*BAS Power Units


TU-14 Test Unit


*See data sheet for specific part numbers.


Certification / Compliances

  • TSO-C69

HEEL Lighting

Helicopter Emergency Egress Lighting (HEEL) system provides an independent battery operated lighting system that marks crew and passenger emergency exits onboard a helicopter. In addition, it visually identifies exits under all cabin conditions including smoke or water filled, capsized and completely submerged thus providing the passenger with an unambiguous definition of the location of the nearest emergency exit.

Product Information

In case of a ditching or a controlled emergency landing over water with smoke development and/or blackout, Astronics Helicopter Emergency Egress Lighting (HEEL) system provides valuable visual clues to identify the emergency exits during ditching. The Helicopter Emergency Egress Lighting (HEEL) system can be activated by a variety of means including loss of A/C power, water, impact or other. Following a ditching or crash, the system identifies the emergency escape hatches, pushout windows and emergency exits by illuminating their perimeter as required by MIL-85676(AS), JAR OPS 3.837(a)(4) and CAA Airworthiness Notice 27.


  • 28 VDC input system
  • Egress lights around the perimeter of all emergency exits
  • Marker lights for door handles, pull straps and other exit activation means
  • Controlled through emergency lighting ON/ARM/OFF switch in cockpit
  • System can be configured to operate in parallel or as part of the emergency lighting system
  • Battery back-up trickle charged off aircraft power in normal operation
  • Longer than 4 years battery life with 18 month check
  • Watertight up to 50 feet for 20 minutes
  • RTCA/DO-160 Tested

A typical HEEL system consists of a number of electroluminescent lamp encapsulated in fiberglass, an extremely rugged and durable construction, emergency sensors (immersion, impact, etc.) and a DC/AC power supply. The HEEL system can be used independently or as part of the Emergency Lighting and Emergency Exit Lighting system.  HEEL meets the requirements set forth in JAR-OPS 3 and fully complies with the United Kingdom Civil Aviation Agency Airworthiness Information Leaflet AD/1L/0124/1-4, dated 16 December 1987, and has obtained CAA Accessory Approval under CAA Approval Number E15499. HEEL is designed to meet all pertinent aviation regulations and meets the airworthiness requirements of RTCA/DO-160.

HEEL Design Concept The ultimate test of any emergency system is the ability to reliably perform in a catastrophic situation. Since an EL lamp is solid state, it is the ideal technology to use as the basis for such a system since it will survive a crash without breaking. In a smoke-filled environment, the area light of the EL lamp is far more visible than a point source of light.