Cessna 560XL User Manual

Citation SERVICE BULLETIN
SB560XL-34-37
TITLE
NAVIGATION - ENHANCED GROUND PROXIMITY WARNING SYSTEM (EGPWS) STEEP APPROACH
SWITCH INSTALLATION
EFFECTIVITY
MODEL SERIAL NUMBERS
560XL -5002 and On with a Mark V EGPWS computer
NOTE: SB560XL-27-19 must be incorporated prior to or in conjunction with this service bulletin.
NOTE: This service bulletin is not applicable to airplanes that are equipped with Universal or Goodrich terrain
awareness and warning systems (TAWS), or Honeywell MK VIII EGPWS.
REASON
To reduce the nuisance “SINK RATE” callouts during a steep approach landing at a location other than:
• London City, England (EGLC)
• Lugano, Switzerland (LSZA)
• Lindbergh Field, San Diego, California (KSAN)
• Stephenville, Newfoundland, Canada (CYJT).
DESCRIPTION
This service bulletin provides parts and instructions to add a EGPWS steep approach push button
switch to the center instrument panel.
Mar 29/2004 560XL-34-37
Page 1 of 6
Cessna Aircraft Company, Citation Marketing Division, P.O. Box 7706, Wichita, KS 67277, U.S.A. 1-316-517-6000, Fax 1-316-517-8500
COPYRIGHT © 2004

Cessna 560XL Specifications

General

Manufacturer	Cessna
Type	Business Jet
Crew	2
Maximum Takeoff Weight	20, 200 lb (9, 163 kg)
Engines	2 × Pratt & Whitney Canada PW545A turbofans
Model	560XL
Wingspan	56 ft 4 in (17.2 m)
Height	5.2 m (17 ft 3 in)
Maximum Landing Weight	18, 700 lb (8, 482 kg)
Cruise Speed	805 km/h (500 mph)
Service Ceiling	45, 000 ft (13, 716 m)
Avionics	Honeywell Primus 1000

Summary

Service Bulletin SB560XL-34-37 Overview

Bulletin Title and Subject

Defines the subject of the service bulletin as the installation of a steep approach switch for the EGPWS.

Applicability and Effectivity

Specifies the aircraft models and serial numbers affected by this service bulletin.

Reason for Modification

Explains the purpose of reducing nuisance 'SINK RATE' callouts during steep approaches.

Bulletin Description

Details the addition of an EGPWS steep approach push button switch to the center instrument panel.

PROCEDURES AND SAFETY

CAUTION: Metal Chip Contamination Hazard

Switch Installation Testing

Describes the procedure for testing the installed switch functionality and system response.

INSTALLATION DIAGRAMS

Figure 1: Steep Approach Switch Layout

Detail A: Cutout Specifications

View A-A: Panel Reference

WIRING DIAGRAMS

Figure 2: Steep Approach Switch Wiring

J-Box and Connector Interfaces

GPWS Switch and Part Details

FLIGHT CREW INFORMATION

Operational Changes Summary

Provides information for flight crews on operational changes resulting from the service bulletin.

Nuisance Callout Reduction

Explains how the switch reduces false 'SINK RATE' alerts during steep approaches.

Steep Approach Airport Selection