The FAA has made final its most recent take on RNAV as well as many of the terms associated with it and new RNAV approaches. How much do you know on the topic? If you're really motivated, the complete text can be found here: http://a257.g.akamaitech.net/7/257/2422/01jan2007l800/edocket.access. gpo.gov/2007/E7-10609.htm. The answers to just these questions are on page 23. 1. The term RNAV actually stands for: a. Area Navigation b. Random Navigation c. Radial Navigation d. Radial Navigation and Approach Vectoring 2. True or False: The LNAV/VNAV and LPV approaches you can fly with a WAAS IFR GPS are neither precision nor non-precision. They are called Approach Procedures with Vertical Guidance. 3. What does LPV officially stand for? a. Lateral Navigation with Vertical Guidance b. Localizer Precision with Vertical Navigation c. Lateral Precision Vectoring d. Localizer Performance with Vertical Guidance 4. Minimum Safe Altitude (MSA) is now "expressed in feet --, depicted on an approach chart that provides at least feet of obstacle clearance for--use within -- from the specified navigation facility or fix." a. AGL, 1000, navigational, 25 miles b. MSL, 1000, emergency, a certain distance c. AGL, 2000, navigational, 10 miles d. MSL, 2000, emergency, 25 miles 5. FAR 91.183 is titled "IFR Radio Communications." Given that our brave new world of technology may use something other than a traditional radio to communicate, the FAA is changing this to: a. I FR Voice Communications b. IFR Communications by Radio or Other Method c. IFR Communications d. The FAA change something in anticipation rather than in reaction? Get real. 6. True or False: The new rule will allow IFR-certified GPS units to meet the requirement for DME above FL240. 7. Changes to FAR 91.177 would clarify that flights may be conducted below the minimum en route altitude (MEA) but at or above the minimum obstruction clearance altitudes (MOCA) will be OK a. only within 22 miles of the VOR defining the route. b. only within 25 miles of the VOR defining the route c. anywhere along the route. d. anywhere along the route, provided applicable navigation signals are available.
QUIZ ANSWERS (questions on page 12)
1. a. The term dates back well before GPS, but wasn't an officially defined term until this year.
2. False. Many industry groups complained about the new definition and it has been withdrawn. For now, you can treat any approach with vertical guidance as "precision," but recognize that it may not have the 200-foot DH that's the hallmark of a Cat I ILS. Expect some redefining here in the future.
3. d. The lateral navigation is fixed width, but comparable to a localizer in accuracy. You'll also get a glideslope right down to the pavement (although you're only supposed to fly it to DA).
4. b. Not to be confused with the ICAO Minimum Sector Altitude, which is based on 25 miles.
5. c. Can you believe it? They're actually making a regulation simpler.
6. True. You can thank AOPA for that one. You can also thank AOPA for a lead role in the effort to keep the requirement for DME to FL240 rather than having it changed to FL180.
7. d. If you're using GPS, you can go to the MOCA anywhere along the route. With VOR navigation, you can only go down to the MOCA within 22 miles of the VOR. In all cases, the lower altitude must be approved by ATC.
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|Date:||Aug 1, 2007|
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