![]()  | 
| If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. | 
		
			
  | 	
	
	
		
		|||||||
| 
		 | 
	Thread Tools | Display Modes | 
| 
		 
			 
			#1  
			 
            
			
			
			
		 
		
		
	 | 
|||
		
		
  | 
|||
| 
	
	
		
			
			 
I am confused by this practice commercial nav question. ( at least I 
		
	
		
		
		
		
		
	
		 
		
	
	
	am confused by the answer in the book which was b. but I think both a and c are correct), but I appreciate some other opinions. Day 1 Altimeter reads elevation of 1390 feet with 1013 HPa set on subscale ( thats equivalent to 29.92 inches of Hg for the US folks) Day 2 Altimeter reads elevation of 1000 feet Assuming the altimeter subscale was not changed between day 1 and day 2 it could be said that a. The QNH is higher on day 2 b. The QNH is lower on day 2 c. The pressure altitude at the airport is lower on day 2 d. The atmospheric pressure at the aerodrome has not changed. Terry PPL Downunder  | 
| Thread Tools | |
| Display Modes | |
		
  | 
	
		
  | 
			 
			Similar Threads
		 | 
	||||
| Thread | Thread Starter | Forum | Replies | Last Post | 
| Looking for TSO Altimeter | Rob Turk | Home Built | 0 | June 9th 07 04:52 PM | 
| Altimeter off | kevmor | Instrument Flight Rules | 11 | March 26th 07 01:11 PM | 
| Altimeter discrepancy | Gene Whitt | Instrument Flight Rules | 6 | August 1st 05 08:11 PM | 
| ATC Altimeter Settings | O. Sami Saydjari | Instrument Flight Rules | 81 | April 11th 05 09:07 PM | 
| Altimeter Disassembly | Dick | Home Built | 3 | April 2nd 05 02:27 PM |