GoJet Airlines CRJ-550 Practice Test 2026 – The All-in-One Guide to Master Your Exam!

RVSM requires tighter altitude accuracy because the vertical separation is reduced to 1,000 feet between aircraft. To reliably maintain that separation, the aircraft must have two independent altimetry systems and the altitude data they provide must be within 200 feet of each other and within the required reference. This tolerance keeps the displayed and transmitted altitudes trustworthy enough for ATC to manage closer spacing safely. Therefore, the allowable discrepancy among the altimeters in RVSM airspace is 200 feet. A smaller tolerance would be safer but isn’t the standard; 300 or 400 feet would not meet RVSM requirements.