could be EGR valve stuck open
is your check engine light on?
hook it up to a code reader and see if it's throwing a code..
Radio aids to navigation.
hard surface runways with VOR, DME or VORTAC location.
DME
the egr valve is located on the top ,frount of the motor . between the air intake and coolant line. it is held on by two bolts.
359°.(Refer to figure 22.)
An aircraft navigation system in which radial and distance information from a Vortac station or distance information from two or more Vortacs is used to fix aircraft position, so that navigation is not restricted to airways or direct routes between stations.
The local flight service station (FSS). You can call them by phone or by radio. For example, the FSS for the area where I live (Phoenix AZ) is at Prescott airport, phone (928) 778-0314 There are various frequencies which are remoted to various VORTAC facilities, the frequencies for which are as shown on Terminal Area and Sectional charts. These FSS's are run under contract to the FAA by Lockheed, Martin Inc
V(ery high frequency) O(omni) R(ange). VOR consists of a four antenna system that transmits voice (automatic terminal information service), identification (to identify the VOR) as well as azimuth information to aircraft. The VOR may be stand alone or used in conjunction with a TACAN ( Tactical Air Navigation) system. This configuration is know as the VORTAC.