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MCU Modular Concept Unit
MFD Multi Function Display
MLS Microwave Landing System
MSL Mean Sea Level
MTC Minimum Terrain Clearance
SECTION 4
Definitions
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56 MK V & MK VII EGPWS Pilot Guide
PCMCIA Personal Computer Memory Card
Industry Association
PLI Pitch Limit Indicator
PPI Plan Position Indicator
PWS Predictive Windshear System
QFE A method of setting the altimeter to
compensate for changes in barometric
pressure and runway
elevation. Pilot receives information
from airfield and adjusts his altimeter
accordingly and it will read zero altitude
at touchdown on the runway.
QNE The method of setting the altimeter
to the standard atmosphere datum
-29.92 inches of mercury (1,013.25
mb). This setting is used in the
United States airspace by all aircraft
above FL180.
QNH The more common method of setting
the altimeter to compensate for
changes in barometric pressure. Pilot
receives information from airfield,
adjusts his altimeter accordingly and
the altimeter will read airfield elevation
at touchdown.
RAAS Runway Awareness Advisory System
RAIM Receiver Autonomous Integrity
Monitoring
RFCF Runway Field Clearance Floor
SAT Static Air Temperature
TA Terrain Awareness
TAD Terrain Alerting and Display
TCAS Traffic Collision Avoidance System
TCF Terrain Clearance Floor
TERR Terrain
TO/GA Takeoff/Go-Around
VDOP Vertical Dilution of Precision
VFOM Vertical Figure of Merit
VFR Visual Flight Rules
VG Vertical Gyro
VHF Very High Frequency
WS Windshear
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MK V & MK VII EGPWS Pilot Guide 57
RUNWAY AWARENESS AND ADVISORY
SYSTEM (RAAS) PILOT GUIDE
TABLE OF CONTENTS
SECTION 1 Introduction .................................................................. 58
SECTION 2 Quick Reference ........................................................... 63
SECTION 3 System Operation Description ....................................... 69
SECTION 4 RAAS Options ................................................................ 86
SECTION 5 Audio Levels .................................................................. 87
SECTION 6 Operational Availability .................................................. 87
SECTION 7 Frequently Asked Questions .......................................... 89
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58 MK V & MK VII EGPWS Pilot Guide
This Pilot Guide describes the functions and operation of the
MKV and MKVII EGPWS Runway Awareness and Advisory System
(RAAS).
The document is divided into the following sections:
• Section 1 - An introduction to the RAAS;
• Section 2 - A Quick Reference guide to the operation of the
RAAS;
• Section 3 – A detailed description of the operation of RAAS;
• Section 4 – A summary of the options available to operators
to configure RAAS;
• Section 5 – Overview of the three audio levels employed for
RAAS;
• Section 6 – Means for the flight crew to check the operational
availability of RAAS.
• Section 7 - Frequently Asked Questions
This guide does not supercede FAA approved data, Flight
Manuals, individual Operations Manuals, requirements,
or procedures. Pilots should be thoroughly familiar with
their own company policies, system configuration,
requirements, and procedures with respect to the
operation of aircraft with the EGPWS and RAAS.
The information in this document is intended as a general explanation
of the Honeywell RAAS. It contains a description of system
performance assuming the identified options are active.
It is well recognized that runway incursions and overruns are a
high-profile operational safety issue worldwide. For example, the
USA is currently experiencing at least one runway incursion per
day at towered airports alone. Safety data indicate that lack of
flight crew position awareness during ground operations and on
approach have contributed to such occurrences worldwide. Recent
industry safety recommendations advocate the need for new
flight deck runway incursion prevention systems. Honeywell has
developed the RAAS as a practical and low-cost system with significant
input from hundreds of pilots. Extensive human factors
evaluations confirm the positive operational safety benefits of
RAAS: increased position awareness; enhanced crew decisionmaking;
reduced crew workload; and superior detection of
position errors leading to runway incursions.
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