Citation Spring 1999

• 8.33 Corn Radio Modifications Are Here
• Thinking About An N Number Change?
• Take Good Care Of Your APU
• 500 Series Cabin Door Handles
• Citation Main Gear Trunnion

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 with 8.33KHz 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 recently released a service bulletin to upgrade the VHF-21/22/422 Corn Radios to include the Europeanmandated 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 Dennis DeCook in Battle Creek at 1.800.525.2376.

Thinking About An N Number Change?

If you plan on changing the registration number of your aircraft and you currently have an LOA (Letter of Authorization) to operate your aircraft in the North Atlantic Minimum Navigation Performance Specification airspace, then prior to changing the registration number, you must notify the Flight Standard District Office that issued your LOA of your intentions. They will contact the manager of the FAA RVSM database who will update the FAA RVSM records and notify the International Civil Aviation Organization about the change in your number.

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

Take Good Care Of Your APU

Like other turbine engine parts, the life and reliability of an APU can be enhanced by how the unit is installed, operated and serviced. The life of an APU can be extended by ensuring that the unit is serviced and operated in accordance with manufacturer’s recomendations. Fuel filters and fuel nozzles must be kept clean. A dirty nozzle can lead to carbon buildup. Carbon buildup can lead to hot-section damage and reduce the life of your APU.

For more information, please contact John Kennedy in Lincoln at 1.800.228.4277, or Dan Arrick in Battle Creek at 1.800.525.2376.

500 Series Cabin Door Handles

Duncan has seen some instances in which the cabin door locking pins start to extend when stowing the external door handle. If the door is closed with the pins partially extended, damage to the paint and door frame can occur. The problem has typically been related to internal door components that were worn or out of adjustment. At no time were any of these doors unsafe, but if you see the problem, make sure you address it at your next maintenance visit.

For more information, please contact Tim Klenke in Lincoln at 800.228.4277, or Roger Courey in Battle Creek at 800.525.2376.

Citation Main Gear Trunnion

Consider periodic applications of lubricant to the landing gear trunnion pivot points to help prevent gear cycling problems in the future. We recommend spraying each trunnion every two to three months. The lubricant to use is p/n WC-393, and can be purchased from Cessna parts. The lubricant comes in a non-aerosol spray bottle. A single well-aimed squirt to each pivot point should be enough to provide trouble-free gear cycles.

For more information, please contact Tim Klenke in Lincoln at 800.228.4277, or Roger Courey in Battle Creek at 800.525.2376.

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