Contributed by Scott McKenzie, Avionics Tech Rep
The date for complying with Airworthiness Directive (AD) 2010-07-02 is rapidly approaching. November 3, 2012 is the date that operators are required to be in compliance of this AD. The AD is applicable to Honeywell RNZ-850/851 Integrated Navigation Units and addresses possible erroneous glide slope or localizer display indications.
Does this AD apply to you?
Verifying applicability is a simple two-step process.
 Step 1 |
 Step 2 |
- Check the NV-850 module data plate on the bottom of the RNZ-850/851 Integrated Navigation Unit. This AD is only applicable to units with NV-850 modules with the following part numbers: 7510134-611, -631, -701, -731, -811, -831, -901 or -931.
- If you have a unit installed with one of the above part numbers, check the mod status on the bottom of the data tag. If the unit has block “T” blackened out, then the unit IS in compliance of AD2010-07-02. If the unit does not have mod “T” installed, then the unit requires modification to comply with this AD.
Don’t wait until the last minute to take care of this AD. Demand for this modification will only get higher. The longer you wait to comply, the longer you may wait to get your unit back. Duncan Aviation is able to perform the modification necessary to comply with AD2010-07-02. Contact a Duncan Aviation Avionics Tech Rep for more information.
Scott McKenzie is an avionics tech rep located in Duncan Aviation's Lincoln, Nebraska, facility. He specializes in troubleshooting the latest in avionics systems installed on aircraft today. His aviation career began in 1995.
