Honeywell MKXXII installation manual Aerospace Optics Inc, D1-3 Aerospace Optics

Honeywell

MK XXII EGPWS Installation Manual

D1-3 Aerospace Optics

Aerospace Optics Inc.

Aerospace Optics Inc. is pleased to support the Honeywell EGPWS/TAWS team with our line of Vivisun LED lighted switches and indicators. We would welcome the opportunity to assist with your installation and address your Honeywell EGPWS/TAWS lighting requirements.

LED Lighting

The Honeywell EGPWS/TAWS systems offer state-of-the-art performance. Accordingly, several recent innovations in LED cockpit lighting have emerged which truly complement the performance of the Honeywell Systems. Traditionally, lighted cockpit switches have used incandescent lamps which are known for the excessive face cap temperatures they generate. The lamps are also subject to high failure rates which degrades sunlight readability and creates reliability concerns. LED lighting resolves each of these limitations as they consume less than half the power of typical incandescent lamps and offer life-of- the-aircraft reliability. However, the use of LED lighting also has a number of additional challenges, which can quickly dilute their utility.

When using LED lighting in the past, sunlight readability and viewing angles were limited and uniform dimming required special pulse width modulation. Additionally, unprotected LEDs were susceptible to damage from transients and voltage spikes from severe electrical environments as defined in RTCA/DO- 160D. However, today, with the evolution of LED technology and innovative design techniques, it is possible to take advantage of the efficiencies afforded by LEDs while continuing to meet the lighting and environmental requirements of aircraft design.

The Vivisun LED resolves each of these challenges including DO-160D compliance and standard voltage controlled dimming. LEDs are the lighting source for the future and the ideal compliment to the Honeywell EGPWS/TAWS Systems.

CAGE CODE: 97896 SCALE: NONE SIZE: A DWG NO: 060-4314-225 REV: C SHEET 160