Table 8-2, In-Flight Altitude Hold Performance Test - Garmin G1000 Nxi System Maintenance Manual

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 1-2. 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 8-2 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:
Enroute To:
Time
(hr:min)
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 8-2, In-Flight Altitude Hold Performance Test

G1000 NXi System Maintenance Manual
King Air 300 Series
190-00716-N1
Pilot
Altitude Airspeed
(ft) (kt)
Date:
Pilot:
Copilot
Altitude Airspeed
(ft) (kt)
Page 360
Revision 1