G1000 / GFC 700 System Maintenance Manual - 300/B300 Series King Air
Page 7-51
190-00716-01
Revision 1
7.25.5
RVSM In-Flight Altitude Hold Check
RVSM operation requires that the autopilot system accurately maintain the acquired altitude during non-
turbulent, non-gust cruise conditions. The autopilot must be maintained in accordance with the G1000
System Maintenance Manual listed in Table 1-3. The autopilot must be shown to meet the performance
specification of the following in-flight altitude hold test.
1.
Verify the following conditions (normal RVSM cruise flight):
•
Altitude FL290 to FL350
•
Altimeter setting 29.92 in Hg (1013 HPA)
•
Autopilot altitude hold engaged
•
Non-turbulent, non-gust conditions
2.
Record the data from the primary cockpit displays as specified by Table 7-8 every 5 minutes for a
minimum flight segment of 30 minutes in length. The maximum altitude deviation shown on the
display throughout the test should not exceed ±65 feet.
If the aircraft fails to hold altitude to this tolerance, repeat the test ensuring that the airspeed remains
constant and the air remains stable during the entire test. If the test still fails, have maintenance checks
performed on the GFC 700 system, then repeat the test. RVSM operations are prohibited until the
autopilot is capable of maintaining altitude within ±65 feet of the selected cruise altitude.
Aircraft s/n:
Date:
Enroute To:
Pilot:
Time
(hr:min)
Pilot Copilot
Altitude
(ft)
Airspeed
(kt)
Altitude
(ft)
Airspeed
(kt)
0:00
0:05
0:10
0:15
0:20
0:25
0:30
0:35
0:40
0:45
0:50
0:55
1:00
Table 7-8, In-Flight Altitude Hold Performance Test
Summary of Contents for Cessna Caravan G1000
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