Hawker Spring 1999

• 8.33 Corn Radio Modifications Are Here!
• Static Drain Caution
• Flex Schedule Clarification
• Interior Tips
• Do You Know Your Oil Type And Oil Change Interval?
• Duncan Receives Hawker 800A STC Approval

8.33 Corn Radio Modifications Are Here!

On October 7, 1999, all flights above FL245 in Austria, Belgium, Germany, Luxembourg, Switzerland, the United Kingdom and France (above FL195) will require radios operated between 118-136.975MHz to be capable of channeling frequencies wit 8.h3 3KHz spacing to ease overcrowding of the Corn frequencies in congested areas. The aircraft must be equipped with two 8.33 Corn radios to meet this requirement. Rockwell Collins has released a SB to upgrade th VeH F-21/22/42 2 Corn Radios to include the European-mandated 8.33 frequencies. Modifications to the Collins CTL and RTU Controllers are also available.

For more information, please contact Dave Pleskac, Ron Hall or Gary Harpster in Lincoln at 1.800.228.4277, or Bob Stickler or Denni Dse Cook in Battle Creek at 1.800.525.2376.

Static Drain Caution

In order to verify the condition and proper sealing of the static drains as called out in Raytheon’s RIL (Per aircraft serial), you need to be prepared to gain access to each drain from inside the aircraft. Experience tells us that corrosion has been found on drain valve reservoir interiors and exterior nipple couplings. During inspections we’ve also found lines to be chaffed. This chaffing was mainly under the R/H side seat structure area. Installation of aluminum plugs is called out in the RIL.

The process requires recertification of th piet ot/stati c system and can take up to 80 hours of labor plus access time. Recertification of the static system for Hawker 800s is called out in the maintenance schedule at 300 Hours or 24 Months.

Flex Schedule Clarification

Hawker 800 operaturs who are complying with inspection procedures as stated in the newly released flex schedule need to pay particular attention to references that direct, you to the General Lubrication section, part 7, Ml/M2, as this section is not listed. Raytheon engineering is aware of this situation and plans are in place to clarify.

Interior Tips

Consider having old cabinet &s drinkrails replaced with prefabricated ones. Parts can be built while you’re flying and installed during regular maintenance.

New processes allow designers to expedite cabinet construction. CAD drawings are used to drive milling machines that cut and drill parts for construction. Accurac &y speed are the goals.

Do You Know Your Oil Type And Oil Change Interval?

TFE731 engines that have incorporated ceramic No. &4 No. 5 seal runners pe r SB’s TFE731-72- 3596, TFE731-72-3597 , o r TFE731-72-5111, are now required to use Mobil 254 oil when servicing the oil system. In addition, the Mobil 254 oil must be changed at an interval not to exceed 45 0 +/- 50 hours.

For more info, contact Jeff Manion or Cecil Sloan in Lincoln at 800.228.4277 or Pete Kilmartin or Dan Arrick in Battle Creek at 800.525.2376.

Duncan Receives Hawker 800A STC Approval

Duncan has received an STC approving a n AlliedSigna l Digital Flight Data Recorder (DFDR) and a Teledyne Avionics Flight Data Acquisition Unit (FDAU) for a Hawker 800A. The installation complies with European JAR’s and U.S. FAR’s, and monitors approximately thirty aircraft system parameters, including the Honeywell ASCB data bus. Duncan’s Modification Department handled the design and certification at the Lincoln, NE, facility.

For more info, contact Dave Pleskac, Ron Hall or Gary Harpster in LNK at 800.228.4277, or Bob Stickler or Dennis DeCook in BTL at 800.525.2376.

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