Hawker Summer 2003

• IVA 81A Intermittent Problem
• Beechjet 400 Reclassification
• 2003 Intelli-Conferences
• SB 57-3500, Aileron Corrosion
• Wiring Diagrams

IVA 81A Intermittent Problem

— Jim Wheaton

Duncan Aviation has installed many TCAS systems by Honeywell that utilize the Honeywell IVA 81D electronic VSI/TCAS display. The "D" model has a known problem which occurs during aircraft power-up. Honeywell is working on a solution and they are hoping for an August release date.

For operators who are experiencing a "TCAS fail" alert intermittently upon powering-up that does not clear itself before flight, Honeywell Tech Rep Jim Morgan recommends resetting the VSI circuit breaker(s). This action should temporarily fix the problem for that power cycle. Duncan Aviation has demonstrated the effectiveness of this temporary fix with customers.

The IVA 81A and B models reportedly do not have this problem.

Beechjet 400 Reclassification

— Dan Fuoco

Raytheon has recently reclassified their Beechjet 400 so that it will be included in their Hawker family of aircraft.

The new name of the old Beechjet 400 is Hawker 400XP.

We hope this clears up any confusion.

2003 Intelli-Conferences

— Steve Gade

Our first Intelli-Conference symposium of 2003, held April 10th in Secaucus, NJ, was a great success. Duncan Aviation will be hosting four additional conferences this year:

• September 9 in Battle Creek, MI
• October 29 in Van Nuys, CA
• November 11 in Atlanta, GA
• November 13 in Dallas, TX

Class choices include Aging Aircraft Issues, Cockpit Avionics Update, Effective Prepurchase, Planning and Managing Completions Projects, Human Factors Maintenance and an Emergenetics Leadership Workshop. Many of these classes are approved for IA renewal credit. Please plan to join us! Register by calling 800.228.4277, ext 1288.

SB 57-3500, Aileron Corrosion

— Roy Olsen

Raytheon issued SB 57-3500 concerning inspection of 800 series ailerons for cracking and corrosion at the outboard hinge area in April of 2002. Duncan Aviation recommends that operators who have not yet complied with this SB do so ASAP. Of the ailerons that Duncan Aviation technicians have inspected, 95% have had corroded parts These parts were corroded to the point that we had to open the aileron tip and replace them. So far most corrosion has been confined to certain angles just aft of the counter weight. One aileron we examined had corrosion on the spar. If the corrosion had been slightly deeper or been or a larger area, the aileron would have had to be condemned.

Wiring Diagrams

— Roy Olsen

Operators should treat wiring diagrams like logbooks. This also includes your avionics and your airplane's main systems diagrams. Any time one of these systems is worked on and changes are made, make sure you get a copy of what has been done. On the airplane's main system prints, if a modification has been done, you can write down "see modification number" or actually draw in the new system or what was removed. If you ever have a problem with one of these systems you will know that diagram is up to date. Most aircraft have two sets of prints. Operators should make another copy and keep one on board the aircraft at all times.

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