AIP United States of America
ENR 1.18−3 15 MAR 07
1.4.2.3 Course to Fix. A Course to Fix (CF) leg is a path that terminates at a fix with a specified course at that fix. Narrative: via 078_ course to PRIMY WP." See FIG ENR 1.18−4.
FIG ENR 1.18−4
runway heading to 1500", heading 265_, at 9 DME west of PXR VORTAC, right turn heading 360_", fly heading 090_, expect radar vectors to DRYHT INT." 1.4.3 Navigation Issues. Pilots should be aware of their navigation system inputs, alerts, and annunciations in order to make better−informed decisions. In addition, the availability and suitability of particular sensors/systems should be considered. 1.4.3.1 GPS. Operators using TSO−C129 systems should ensure departure and arrival airports are entered to ensure proper RAIM availability and CDI sensitivity. 1.4.3.2 DME/DME. Operators should be aware that DME/DME position updating is dependent on FMS logic and DME facility proximity, availability, geometry, and signal masking. 1.4.3.3 VOR/DME. Unique VOR characteristics may result in less accurate values from VOR/DME position updating than from GPS or DME/DME position updating. 1.4.3.4 Inertial Navigation. Inertial reference units and inertial navigation systems are often coupled with other types of navigation inputs, e.g., DME/DME or GPS, to improve overall navigation system performance.
NOTE− Specific inertial position updating requirements may apply.
Course to Fix Leg Type
1.4.2.4 Radius to Fix. A Radius to Fix (RF) leg is defined as a constant radius circular path around a defined turn center that terminates at a fix. See FIG ENR 1.18−5.
FIG ENR 1.18−5
Radius to Fix Leg Type
1.4.4 Flight Management System (FMS). An FMS is an integrated suite of sensors, receivers, and computers, coupled with a navigation database. These systems generally provide performance and RNAV guidance to displays and automatic flight control systems. 1.4.4.1 Inputs can be accepted from multiple sources such as GPS, DME, VOR, LOC and IRU. These inputs may be applied to a navigation solution one at a time or in combination. Some FMSs provide for the detection and isolation of faulty navigation information. 1.4.4.2 When appropriate navigation signals are available, FMSs will normally rely on GPS and/or DME/DME (that is, the use of distance information from two or more DME stations) for position updates. Other inputs may also be incorporated based on FMS system architecture and navigation source geometry.
Nineteenth Edition
1.4.2.5 Heading. A Heading leg may be defined as, but not limited to, a Heading to Altitude (VA), Heading to DME range (VD), and Heading to Manual Termination, i.e., Vector (VM). Narrative: climb
Federal Aviation Administration
飞行翻译公司 www.aviation.cn 本文链接地址：AIP UNITED STATES OF AMERICA R19 15 MARCH 2007_部分3.pdf
ENR 1.18−3 15 MAR 07
1.4.2.3 Course to Fix. A Course to Fix (CF) leg is a path that terminates at a fix with a specified course at that fix. Narrative: via 078_ course to PRIMY WP." See FIG ENR 1.18−4.
FIG ENR 1.18−4
runway heading to 1500", heading 265_, at 9 DME west of PXR VORTAC, right turn heading 360_", fly heading 090_, expect radar vectors to DRYHT INT." 1.4.3 Navigation Issues. Pilots should be aware of their navigation system inputs, alerts, and annunciations in order to make better−informed decisions. In addition, the availability and suitability of particular sensors/systems should be considered. 1.4.3.1 GPS. Operators using TSO−C129 systems should ensure departure and arrival airports are entered to ensure proper RAIM availability and CDI sensitivity. 1.4.3.2 DME/DME. Operators should be aware that DME/DME position updating is dependent on FMS logic and DME facility proximity, availability, geometry, and signal masking. 1.4.3.3 VOR/DME. Unique VOR characteristics may result in less accurate values from VOR/DME position updating than from GPS or DME/DME position updating. 1.4.3.4 Inertial Navigation. Inertial reference units and inertial navigation systems are often coupled with other types of navigation inputs, e.g., DME/DME or GPS, to improve overall navigation system performance.
NOTE− Specific inertial position updating requirements may apply.
Course to Fix Leg Type
1.4.2.4 Radius to Fix. A Radius to Fix (RF) leg is defined as a constant radius circular path around a defined turn center that terminates at a fix. See FIG ENR 1.18−5.
FIG ENR 1.18−5
Radius to Fix Leg Type
1.4.4 Flight Management System (FMS). An FMS is an integrated suite of sensors, receivers, and computers, coupled with a navigation database. These systems generally provide performance and RNAV guidance to displays and automatic flight control systems. 1.4.4.1 Inputs can be accepted from multiple sources such as GPS, DME, VOR, LOC and IRU. These inputs may be applied to a navigation solution one at a time or in combination. Some FMSs provide for the detection and isolation of faulty navigation information. 1.4.4.2 When appropriate navigation signals are available, FMSs will normally rely on GPS and/or DME/DME (that is, the use of distance information from two or more DME stations) for position updates. Other inputs may also be incorporated based on FMS system architecture and navigation source geometry.
Nineteenth Edition
1.4.2.5 Heading. A Heading leg may be defined as, but not limited to, a Heading to Altitude (VA), Heading to DME range (VD), and Heading to Manual Termination, i.e., Vector (VM). Narrative: climb
Federal Aviation Administration
飞行翻译公司 www.aviation.cn 本文链接地址：AIP UNITED STATES OF AMERICA R19 15 MARCH 2007_部分3.pdf
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