FAQ
Why do I need the Legacy XL Stationary Panel?
The Legacy XL Stationary Panel is the only STC/PMA approved solution for replacing the stock stationary panel in Cessna aircraft.
In Cessna 172’s manufactured prior to the 1976 model year, the control yoke position was approximately 1-1/2″ higher than in later models. This resulted in offset and nonstandard flight instrument layouts. To achieve the look of modern Cessnas, an alteration to the stock stationary panel would need to be made to accommodate either a traditional “six pack” or a 10-inch PFD .
The Legacy XL Stationary Panel is an easy way to convert your older Cessna 172 to allow for the installation of a six pack or PFD without compromising the structure of the aircraft.
Is the Legacy XL Stationary Panel approved for my model?
It is currently available for:
- Cessna 172 models E through M, S/N range: 17250573-17265684
- Reims F172 models E through M, S/N Range F172-0019 through F17201384.
The 172B, C, and D, as well as all models of 175 are currently in development.
The avionics are approved for my model, why wouldn't they fit?
Avionics STC’s such as for the Garmin G3X Touch or Dynon SkyView HDX both contain approval for the installation of either a 7-inch Primary Flight Display OR a 10-inch Primary Flight Display. All Cessna 100 series aircraft are on the Approved Model List for the equipment, but their installation instructions explicitly state that it is the responsibility of the owner and installer to determine whether the equipment will fit. The STC’s may include guidance for alterating the floating panels only and will refer you to AC43.13-2B for guidance on altering the structure.
Aren't Instrument Panel Modifications Covered Under the Avionics STC?
Avionics STC’s may typically provide guidance for modifying instrument panels, but read carefully. Usually, they provide guidance for shock mounted/floating panels only, and provide specific material requirements. Most avionics will mention in some way that you must maintain the existing form, fastener location, and retain all elements of the aircraft structure. This includes maintaining all existing mounting holes, control yoke attach brackets, avionics support rails, etc.
Installation Manuals such as the Dynon SkyView HDX refer specific to AC 43.13-2B Paragraph 1104 which states that while the stationary panel may be considered secondary structure with load bearing responsibilities limited to instruments and equipment installed, regardless of structural nature the altering technician is responsible for the installation to it’s original or properly altered state.
First, refer to the manufacturer’s instructions for continued airworthiness when considering alterations to any structure. Since Textron does not provide explicit instructions for how to alter the stationary panel, the guidance continues on to recommend the following:
“Failing availability or applicability of those sources, we recommend that the altering individual have a Designated Engineering Representative approve the data before accomplishing the task.”
Why should I avoid cutting the stuctural stationary panel to make my new avionics fit?
In Cessna aircraft, the stationary panel is the structural panel which the floating panels or plastic overlays mount to. The shock mounted panel, which contains the majority of flight instruments, fastens to this structure with rubber isolator mounts. Other instruments, which are not sensitive to vibration may be mounted directly through the stock stationary panel. The stationary panel is a structural bulkhead, which provides rigidity and strength and carries instrument and some fuselage load through to the engine mount stringers.
Cutting this structure is considered a Major Alteration, and guidance from AC43.13-2B advices that in the absence of direct information from the manufacturer, a Designated Engineering Representative (DER) should be used to substantiate the alteration.
In the Cessna Service Manual, there is no direct guidance on repairs or alterations to this structure, and representatives from Textron – Cessna’s parent company – recommend working with a DER to substantiate any cutouts and alterations made to the stationary panel, OR you can install an STC approved product such as the Legacy XL Stationary Panel.
