FAA APPROVED ROTORCRAFT FLIGHT MANUAL SUPPLEMENT FOR THE HONEYWELL MK XXII ENHANCED GROUND PROXIMITY WARNING SYSTEM (EGPWS) [Aircraft Type]

Transcription

1 FAA APPROVED ROTORCRAFT FLIGHT MANUAL SUPPLEMENT FOR THE HONEYWELL MK XXII ENHANCED GROUND PROXIMITY WARNING SYSTEM (EGPWS) [Aircraft Type] Serial No. This Supplement must be attached to the FAA Approved Rotorcraft Flight Manual when the aircraft is modified by the installation of a Honeywell MK XXII Enhanced Ground Proximity Warning System (EGPWS) in accordance with technical data approved by STC. The information contained herein supplements or supersedes the basic manual only in those areas listed herein. For Limitations, Procedures, and Performance information not contained in this Supplement, consult the basic Rotorcraft Flight Manual. FAA APPROVED Sample Only Manager, Flight Test Branch, Federal Aviation Administration Aircraft Certification Office FAA Approval Date: Sample Only FAA Approved Date: Doc. No.: Rev A Page 1 of 12

2 LOG OF REVISIONS Rev. Pages Description FAA Approval Original A 1-12 All Complete Revised document for PN XXX Sample Only Manager, Flight Test Branch Federal Aviation Administration Aircraft Certification Office EDITOR S NOTES: This document was created by Jim Mulkins, and approved by Noel Paterson of Honeywell. This text is not part of a normal RFMS, and exists only to satisfy Honeywell document release procedures. Several sections of this sample RFMS contain information also found in the MK XXII EGPWS Pilot s Guide. It may be acceptable to reference the MK XXII EGPWS Pilot s Guide in lieu of the text found in this sample RFMS FAA Approved Date: Doc. No.: Rev A Page 2 of 12

3 TABLE OF CONTENTS SECTION PAGE Revision...2 Pages...2 Description...2 FAA Approval...2 I. General Introduction Ground Proximity Warning Terrain (or Obstacle) Awareness Display...4 II LIMITATIONS...6 II. EMERGENCY PROCEDURES General...6 III. NORMAL PROCEDURES General EGPWS Circuit Protection Level 1 Self Test Go/No Go Enhanced Ground Proximity Warnings/Cautions Response to EGPWS Warnings/Cautions Response to Glideslope Deviation Alerts (Mode-5) Advisory Altitude Callouts (Mode-6) (delete those not selected for your installation) Minimums-Minimums Callout (if selected in installation) Altitude Altitude Callout (if selected in installation) Smart 500 Foot Callout (if selected in installation) Autorotation EGPWS Indicators and Controls Display Pop-Up and Auto-Ranging (if selected for installation) Use of the Terrain (or Obstacle) Awareness Display (if installed) Alert Priorities System Constraints...12 IV. PERFORMANCE...12 FAA Approved Date: Doc. No.: Rev A Page 3 of 12

4 I. General 1. Introduction The MK XXII Enhanced Ground Proximity Warning System (EGPWS) integrates two alerting functional areas into a single Line Replaceable Unit (LRU), the Enhanced Ground Proximity Warning Computer (EGPWC). These functional areas are: Ground Proximity Warning (including altitude awareness callouts and bank angle alerting) Terrain (or Obstacle) Awareness and Display (TAD) The system operates by accepting a variety of aircraft parameters as inputs and applying alerting algorithms. In the event that the boundaries of any alerting envelope are exceeded, the EGPWS provides the flight crew with aural alert annunciations and visual displays. The EGPWS comprises the following groups of components: Aircraft sensors and other systems input signals The Enhanced Ground Proximity Warning Computer (EGPWC) Cockpit Audio Systems (Speakers and Headphones) Alert Lamps, Mode and Selector Switches and Terrain Display The EGPWS is designed to be fully compatible with normal aircraft operations. Unwanted alerts will be very rare if the pilot maintains situational awareness with respect to the terrain. The only required pilot input is to initiate a preflight self-test. This RFMS is applicable to PNs XXX and XXX. 2. Ground Proximity Warning GPWS Modes 1 through 6 employ the algorithms used in the MK XXII EGPWS. Mode Function Caution Warning Mode 1 Excessive Descent Rate Sinkrate Sinkrate Pull Up Mode 2 Excessive Closure to Terrain Terrain, Terrain Pull Up Mode 3 Altitude Loss after Takeoff Don t Sink Mode 4 Unsafe Terrain Clearance Too Low Gear (retractable gear aircraft only) Too Low Terrain Mode 5 Excessive Glideslope Deviation Glideslope Mode 6 Advisory callouts One Hundred, etc. Mode 6 Bank Angle callouts Bank Angle Tail Strike callouts Tail Too Low Be Alert Terrain INOP Advisory Be Alert Terrain INOP 3. Terrain (or Obstacle) Awareness Display The enhanced functions of the EGPWS are the Terrain (or Obstacle) Awareness and Display (TAD). Obstacles of 100 feet or more have been included for North America and parts of Europe and Asia (see Honeywell document 060- FAA Approved Date: Doc. No.: Rev A Page 4 of 12

5 for a graphical depiction of obstacles included in the EGPWS database). These functions use geographic aircraft position, aircraft altitude and a terrain database to predict potential conflicts between the aircraft flight path and the terrain or cataloged man made obstacles. Additionally, it provides graphic displays of the conflicting terrain or obstacle. Mode Function Caution Warning TA Terrain Awareness Caution Terrain, Warning Terrain Caution Terrain Obstacle Awareness Caution Obstacle, Warning Obstacle Caution Obstacle A. Terrain (or Obstacle) Awareness and Display (TAD) The Terrain (or Obstacle) Awareness and Display (TAD) algorithms continuously compute terrain clearance envelopes ahead of the aircraft. If the boundaries of these envelopes conflict with terrain/obstacle elevation data in the terrain database, alerts are issued. Two envelopes are computed, one corresponding to a Terrain/Obstacle Caution Alert level and the other to a Terrain/Obstacle Warning Alert level. If the aircraft penetrates the Caution envelope boundary, the aural message Caution Terrain, Caution Terrain or Caution Obstacle, Caution Obstacle is generated, and alert discretes are provided for activation of a visual amber GPWS annunciator. Simultaneously, terrain areas or obstacles that conflict with the caution criteria are shown in solid yellow color on the display. If the aircraft penetrates the Warning envelope boundary, the aural message Warning Terrain or Warning Obstacle is generated, and alert signals are provided for activation of the visual red GPWS annunciator. Simultaneously, terrain areas that conflict with the warning criteria are shown in solid red color on the display. Terrain picture data may be selected in place of the weather radar display at any time. The terrain display will appear on the EFIS/MFD/Radar Display. When the conditions for either a Terrain/Obstacle Caution or a Terrain/Obstacle Warning are dictated, the system automatically changes the EFIS/MFD /Radar Display from the weather radar picture to the terrain picture on the 5 NM range or 2.5 NM in low altitude mode (if auto pop-up and auto ranging are activated). Terrain that is sufficiently close to the aircraft, but does not satisfy the Caution or Warning criteria, is shown in varying density levels of red, yellow, or green dot patterns with a black background. The density of the dot pattern is coarsely varied to depict terrain altitude with respect to the aircraft. All displayed terrain areas or obstacles are shown as rectilinear shapes which are designed to be easily distinguishable from the display of weather radar images. Magenta (purple) dot patterns are used to indicate areas where terrain information is unavailable. Peaks display mode (when programmed) provides additional terrain display features for enhanced situational awareness, independent of the aircraft s altitude. This function is evidenced by the presence of three-digit elevation numbers indicating the highest and lowest terrain/obstacle elevation within the selected map range. These elevations are expressed in hundreds of feet above sea level (e.g., 125 is 12,500 feet MSL). In the event that there is no appreciable difference between the highest and lowest terrain/obstacle elevations (flat terrain), only the highest value is displayed. The colors of the elevation numbers match the color of the terrain that is represented. When well above terrain, the EGPWS displays additional green terrain contours. A distinct graphic representation of sea level water (0 feet MSL) is supported by some displays. FAA Approved Date: Doc. No.: Rev A Page 5 of 12

6 II LIMITATIONS The EGPWS Pilot s Guide must be immediately available to the flight crew when operating the EGPWS For PN XXX, see Pilot s Guide Revision B dated November 2001, or later version For PN XXX, see Pilot s Guide dated October 2003, or later version Pilots are authorized to deviate from their current air traffic control (ATC) clearance to the extent necessary to comply with an EGPWS warning. Navigation must not be predicated upon the use of the Terrain (or Obstacle) Awareness Display. The Terrain (or Obstacle) Awareness Display is intended to serve as a situational awareness tool only, and may not provide the accuracy and/or fidelity on which to solely base terrain avoidance maneuvering. Low Altitude mode may not be used in IMC condition. II. EMERGENCY PROCEDURES 1. General No change to basic Aircraft Flight Manual FAA Approved Date: Doc. No.: Rev A Page 6 of 12

7 III. NORMAL PROCEDURES 1. General The Enhanced GPWS is active if the GPWS INOP and TERRAIN INOP messages are not illuminated, electrical power is on, and the following systems are operational (if installed): A. Enhanced Ground Proximity Warning Computer (EGPWC) B. Radio Altimeter C. Air Data Computer D. NAV/GS Receiver E. Roll Attitude System F. Magnetic Heading System G. Global Positioning System H. Audio System I. Gear and WOW indicating systems J. Display System (EFIS, MFD, Radar Indicator) The GPWS INOP annunciation signifies a failure of the basic GPWS (Modes 1-6). The TERRAIN INOP annunciation signifies TAD is not available. In the event the Radio Altimeter is not functioning, the basic GPWS modes will not be available. However, TAD will be available. If the EGPWS TAD features become inoperative because of a system fault or inaccurate position information, the basic GPWS functions Modes 1-6 will still be available. 2. EGPWS Circuit Protection The following circuit breakers are associated with the EGPWS: CB NAME AMPS LOCATION BUS GPWS DC 3 Cockpit CB Panel 28 VDC GPWS Lights 1 Cockpit CB Panel 28 VDC Lights GPWS AC 1 Cockpit CB Panel 26 VAC Ref. 3. Level 1 Self Test Go/No Go Perform a system self test on the ground prior to the first flight of every flight day. This test procedure is designed to verify various aircraft cockpit configurations. The actual switch/annunciator nomenclature and color may vary from that specified in this document. NOTE: If the EGPWS contains Internal GPS (PN ) this test must be performed in view of GPS satellites (i.e. outside the hangar) A) Ensure the LOW ALT switch is NOT engaged. B) Initiate the EGPWS Self Test. C) VERIFY the following sequence: FAA Approved Date: Doc. No.: Rev A Page 7 of 12

8 The amber GPWS INOP and TERRAIN INOP annunciators in the cockpit will remain on throughout this test. The cockpit amber GPWS annunciator turns on. "GLIDESLOPE" audible message is annunciated. Amber GPWS annunciator turns off. The cockpit amber G/S CANCEL annunciator turns on momentarily (if installed). The cockpit red GPWS annunciator turns on. "PULL UP" audible message is annunciated. The Terrain Display Self Test pattern is displayed (if installed). WARNING TERRAIN audible message is annunciated. EGPWS annunciator turns off. The Terrain Display Self Test pattern turns off after several sweeps of the terrain display (if installed). The GPWS INOP and TERRAIN INOP annunciators are turned off. 4. Enhanced Ground Proximity Warnings/Cautions A. EGPWS WARNING: Any of the following conditions are regarded as an EGPWS warning: 1) Activation of the voice warning: WARNING TERRAIN, or WARNING OBSTACLE 2) Activation of the red GPWS annunciator B. EGPWS CAUTION. Any of the following conditions is regarded as an EGPWS cautionary alert: 1) Activation of the voice caution CAUTION TERRAIN, CAUTION OBSTACLE, TOO LOW TERRAIN, SINKRATE, DON T SINK, GLIDESLOPE, or TOO LOW GEAR voice alert. 2) Activation of the red GPWS annunciator or amber BELOW G/S annunciator Note: If Category 13 (I/O Discrete Type) ID 129 is configured, an amber GPWS annunciator should be used, and will activate during a caution. 5. Response to EGPWS Warnings/Cautions When an aural WARNING TERRAIN or WARNING OBSTACLE warning occurs. In Instrument condition or at night where visual judgement of the situation is not assured: 1 Immediately initiate a climb 2. Apply Maximum Power. 3. Continue maximum climb until all visual and aural warnings cease. 4. Advise Air Traffic Control as necessary In Visual conditions during the day: 1. Evaluate aircraft flight path with respect to terrain. 2. Take corrective action as necessary to recover safe terrain clearance. 3. Advise Air Traffic Control as necessary. FAA Approved Date: Doc. No.: Rev A Page 8 of 12

9 6. Response to Glideslope Deviation Alerts (Mode-5) A. When an aural GLIDESLOPE alert occurs, initiate corrective action to fly the aircraft back to the glideslope centerline. B. To inhibit nuisance messages (e.g., on backcourse approaches), the GLIDESLOPE CANCEL switch can be pressed when the aircraft is below 2000 feet AGL. 7. Advisory Altitude Callouts (Mode-6) (delete those not selected for your installation) The following advisory callouts are provided in this installation: "BANK ANGLE BANK ANGLE" TWO HUNDRED ONE HUNDRED FIFTY FORTY THIRTY TWENTY TEN TAIL TOO LOW BE ALERT TERRAIL INOP Occurs when roll attitude is excessive. Occurs at 200 feet AGL. Occurs at 100 feet AGL. Occurs at 50 feet AGL. Occurs at 40 feet AGL. Occurs at 30 feet AGL. Occurs at 20 feet AGL. Occurs at 10 feet AGL. Impending tail strike Terrain display not available 8. Minimums-Minimums Callout (if selected in installation) This callout is available for Decision Height settings with gear down or not in low altitude mode. This callout will override an altitude callout set for the same height AGL. 9. Altitude Altitude Callout (if selected in installation) This callout is available for Decision Height settings with gear up or in low altitude mode. This callout will override an altitude callout set for the same height AGL. 10. Smart 500 Foot Callout (if selected in installation) Provides a FIVE HUNDRED foot callout during non-precision approaches, or when one or more of the following conditions exist: Flight path exceeds Glideslope beam by 2 dots. Flight path exceeds Localizer beam by 2 dots. Backcourse approach is detected. 11. Autorotation During autorotation only the Two Hundred and One Hundred altitude callouts are provided. Too Low Gear will be enunciated at 400 feet if: Retractable gear aircraft Gear is not down and locked FAA Approved Date: Doc. No.: Rev A Page 9 of 12

10 12. EGPWS Indicators and Controls The following indicators and controls are associated with the Enhanced GPWS: Indicator/Control Color Location Function GPWS (Note 1) RED In front of each pilot GPWS or PULL UP alerts BELOW G/S (Note 1) AMBER In front of each pilot BELOW G/S alerts GPWS (Note 2) RED In front of each pilot GPWS Warning GPWS (Note 2) AMBER In front of each pilot GPWS Caution GPWS INOP AMBER On center panel or EFIS annunciation TERR INOP AMBER On center panel or EFIS annunciation Indicates basic GPWS functions are inoperative Indicates that TAD is inoperative GPWS P/TEST (Note 3) N/A In front of each pilot EGPWS Press to Self-Test G/S P/CANCEL (Note 4) N/A In front of each pilot Press to cancel G/S function G/S CANCELED LOW ALTITUDE TERRAIN INHIBIT TIMED AUDIO INHIBIT WHITE, BLUE or GREEN WHITE, BLUE or GREEN WHITE, BLUE or GREEN WHITE, BLUE or GREEN In front of each pilot On when G/S alerts are manually canceled On center panel Flight operation below 500 feet AGL On center panel On center panel Silences TERR voice announcements Silences GPWS & TERR voice announcements for 5 minutes WX RADAR RANGE On WX radar controller Controls range of display Selector Knob TERR Display select switch WHITE, BLUE Near each Terrain Used to select terrain display or GREEN Display or on each Display Control Panel Note-1 These annunciators are used with Lamp Format 128 (Category 13 ID 0) Note-2 These annunciators are used with Lamp Format 129 (Category 13 ID 1) Note-3 Typically, GPWS Press to Test is located on the red GPWS annunciator. Note-4 Typically, G/S Press to Cancel is located on the amber GPWS annunciator. 13. Display Pop-Up and Auto-Ranging (if selected for installation) Two additional features are provided for the EGPWS terrain display: the display pop-up feature and the display auto-ranging feature. A. Pop-Up: In the event of a terrain alert, the display will automatically switch to display terrain. The display may be manually selected to display weather radar if desired, when the terrain alert has ceased. B. Auto-Ranging: In the event of a terrain alert, when the display automatically switches to display terrain, the display range automatically switches to 5 NM (2.5 in low altitude mode) range to provide the highest resolution image of the terrain. A magenta range ring or range indication will display if the selected range on the display does not match the Pop-Up range. FAA Approved Date: Doc. No.: Rev A Page 10 of 12

11 14. Use of the Terrain (or Obstacle) Awareness Display (if installed) The Terrain (or Obstacle) alerting may be shown on the display. A scanning blue marker may appear on the display and an area wide terrain picture will be seen. A text field on the display may show the status of the Terrain (or Obstacle) Awareness Display (i.e. TERR, TERR-ST, OBST, etc.) The display may be used as one component of maintaining awareness of separation from terrain. The display is not intended for navigation purposes. CAUTION The Terrain (or Obstacle) Awareness Display is intended to serve as a situational awareness tool only, and may not provide the accuracy and/or fidelity on which to solely base terrain avoidance maneuvering. Weather radar and terrain information cannot be displayed simultaneously on a single display. For operation near convective activity, pilots may select weather display on one display, and terrain on the other. If only one display is operational, the crew should use the weather radar display as usual. 15. Alert Priorities When any of the EGPWS alert lamps are illuminated, the TCAS is placed in TA ONLY mode inhibiting all TCAS aural messages. The following lists the priority of the warning and cautions: RELATIVE PRIORITY WARNING CONDITION POSSIBLE MESSAGES LAMP FORMAT 1 LAMP FORMAT 2 HIGHEST Mode 1 Pull Up Pull Up GP WARN GP WARN Mode 2 Pull Up Preface Terrain Terrain GP WARN GP ALERT Mode 2 Pull Up Pull Up GP WARN GP WARN Terrain Awareness Preface Warning Terrain GP WARN GP ALERT Terrain Awareness Warning Warning Terrain GP WARN GP WARN Obstacle Awareness Preface Warning Obstacle GP WARN GP ALERT Obstacle Awareness Warning Obstacle GP WARN GP WARN Warning Mode 2 Terrain Terrain GP WARN GP ALERT Mode 6 Minimums Per selected menu No Lamp No Lamp Terrain Awareness Caution Caution Terrain - Caution Terrain GP WARN GP ALERT Obstacle Awareness Caution Caution Obstacle - Caution Obstacle GP WARN GP ALERT Mode 4 Too Low Terrain Too Low Terrain GP WARN GP ALERT Mode 6 Altitude Callouts Per selected menu No Lamp No Lamp Mode 4 Too Low Gear Too Low Gear GP WARN GP ALERT Mode 1 Sinkrate Sinkrate-Sinkrate GP WARN GP ALERT Mode 3 Don t Sink Don t Sink-Don t Sink GP WARN GP ALERT Mode 5 Glideslope Glideslope G/S ALERT GP ALERT Mode 6 Bank Angle Bank Angle No Lamp No Lamp Mode 6 Tail Strike Tail Too Low No Lamp No Lamp LOWEST TA&D Invalid Alert Be Alert Terrain Inop Terrain INOP Terrain INOP FAA Approved Date: Doc. No.: Rev A Page 11 of 12

12 16. System Constraints If there is no terrain data in the database for a particular area, the affected display area is colored magenta. The terrain database, displays and alerting algorithms currently account for limited cataloged man-made obstructions within the United States and parts of Canada and the Caribbean. Obstacle alerting must be configuration to be activated. If obstacle data is not in the database for a particular obstacle, Obstacle Awareness alerting is not available for that obstacle. In standard EGPWS condition, the system may give no advance warning time for flight into precipitous terrain where there are few or no preceding obstructions. If the aircraft is flown toward obstructing terrain, the EGPWS will give no warnings if all the following conditions apply: The aircraft is in landing configuration (gear down). The aircraft is in a stabilized descent at a normal approach descent rate. The aircraft ground speed is less than 60 kts. There is no ILS Glideslope signal being received by the Enhanced Ground Proximity Warning System (i.e., there is no ILS available or the Glideslope receiver connected to the Enhanced Ground Proximity Warning Computer is not tuned to the appropriate ILS frequency). Terrain clearances or descent rates during radar vectoring that are not compatible with those required by the minimum regulatory standards for Ground Proximity Warning equipment may cause unwanted warnings or alerts. The GPWS uses an internal magnetic variation table to support the display of terrain data. The magnetic variation table is valid between 70 North and 60 South latitudes only. If the GPWS Terrain Display is active, the display will deselect during operations beyond these listed latitudes, the TERR annunciators will extinguish and the WXR annunciators will illuminate. Only the GPWS Terrain Display is inactive. The GPWS Terrain/Obstacle Awareness Alerting functions are still active. IV. PERFORMANCE No change to basic Aircraft Flight Manual. FAA Approved Date: Doc. No.: Rev A Page 12 of 12