EGPWS LINE MAINTENANCE MANUAL

4 MAINTENANCE PRACTICES

4.1 GENERAL

Normal maintenance activities performed on the EGPWS should follow standard industry maintenance practices. System maintenance practices may include; updating a database, downloading flight history data, and programming or reprogramming the MK VI, MK VIII or MK XXII Configuration Module. These are addressed in the following sections.

4.2 DATABASE UPDATE

The Enhanced Ground Proximity Warning System (EGPWS) uses Terrain, Obstacle, Runway, and Envelope Modulation databases to provide enhanced functions. These are periodically updated, as new data becomes available. The Terrain, Obstacle, and Runway databases are typically combined and loaded into the EGPWS as one database, however it is possible that individual database updates could be provided. The procedure for loading a database update is the same in all cases and this section will address them as a database update generically.

For each new (updated) database, Honeywell will provide notification of the new database via a Service Information Letter (SIL). The SIL will be sent to all registered EGPWS customers, or they will be available for Internet download from Honeywell Technical Publication website or the EGPWS website at www.egpws.com. The SIL will contain a description of the changes in the database, as compared to the previous database, so that each customer can determine the applicability of the database update to their operations. For example, a Terrain database update involving only terrain in South America will be of no value to a domestic U.S. airline. Thus, the domestic U.S. airline would not need the database update. The SIL will also contain instructions on how to obtain the new Terrain Database and any required modifications. Database updates are coordinated with the FAA prior to SIL release via a Honeywell “minor mod” notification process. Installation and verification of terrain databases is addressed in a generic Service Bulletin.

EGPWS databases are not identified on the EGPWC nameplate as a part of the unit part number. However, for the MK V and MK VII, there is a label on the inside of the front panel maintenance door that can be used for identifying the installed terrain database. For the MK VI, MK VIII, and MK XXII a separate label is placed on the unit front panel identifying the installed Terrain database version number and for the MK VI and MK XXII the database region (see section 2.2.10.1). Otherwise, the installed databases can be determined in the Level 3 Self-Test (see Section 3.5) which should always be used to confirm the current database version.

4.2.1 DATABASE UPDATE FREQUENCY

Honeywell is continually striving to improve the EGPWS databases. New terrain, obstacle, or runway data is obtained by many different means, evaluated and verified, before it is processed into an EGPWS database. When sufficient or significant new data is available, Honeywell will release a database update.

Honeywell is committed to investigating reported nuisance alerts. When nuisance alerts result from database problems (accuracy or resolution) Honeywell will make corrections to the database. Nuisance alerts can also result in changes to the Envelope Modulation database, although this tends to be less frequently updated.

It is up to the EGPWS customer to determine if a specific database update is applicable to their operation. Honeywell recommends always operating with the latest database.

NOTE: Some database updates may require a hardware or software mod. Any required modification information will be identified in the associated database SIL.

Operators can visit the EGPWS website Database page and enroll in a distribution list that sends e-mail notification when a new database is released. Also on this website page is a Future Content and Schedule document the gives details on the expected release dates for 3-4 future databases.

4.2.2 LOADING A DATABASE

A database is loaded into the EGPWC via the PCMCIA card slot in the front panel in the MK V and MK VII. In the MK VI, MK VIII, and MK XXII a “Smart Cable” data-loader is connected to the Test connector on the front panel.

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Honeywell MK VIII, MK XXII manual Maintenance Practices General, Database Update Frequency, Loading a Database

MK VIII, MK V, MK XXII, MK VII, MK VI specifications

Honeywell's range of control systems, particularly the MK VI, MK VIII, MK VII, V, and XXII, are pivotal innovations that have revolutionized process automation and control in various industries, especially in power generation and oil and gas sectors. Each of these systems comes with unique features and technologies to enhance operational efficiency, safety, and reliability.

The Honeywell MK VI control system is renowned for its ability to provide effective plant control and management tools, featuring advanced operator interfaces and robust hardware components. It employs a modular design, which allows for easy scalability and integration into existing infrastructure. The MK VI is equipped with Ethernet-based communication protocols, ensuring high-speed data transfer and enabling seamless connectivity with other systems.

The MK VIII system takes automation a step further, emphasizing enhanced performance and reliability. With its built-in redundancy and advanced diagnostics, the MK VIII minimizes downtime and optimizes maintenance efforts. Its powerful software tools are designed to improve operator decision-making, providing critical insights into plant operations and trends.

Honeywell’s MK VII control system is designed for high-performance applications, especially in gas turbine environments. It features advanced control algorithms, enabling precise control of emissions and improving overall efficiency. The MK VII stands out with its ability to maintain optimal performance under varying load conditions, ensuring reliability in challenging operational scenarios.

The MK V system is one of Honeywell's legacy products, known for its simple and user-friendly interface. Despite its age, it continues to be a dependable choice for many plants. It offers solid performance with basic control functions and has been a reliable backbone for older facilities transitioning into newer technologies.

Lastly, the MK XXII brings a modern twist to control systems with its focus on cybersecurity and data analytics. This system takes advantage of big data and IoT technologies, providing enhanced visibility of operations through real-time monitoring and predictive maintenance capabilities. The MK XXII ensures that plants not only operate efficiently but also mitigate risks associated with cyber threats.

Overall, Honeywell's series of control systems showcases their commitment to innovation and reliability in process automation, catering to the diverse needs of contemporary industrial environments. Each system is designed with specific features and capabilities that address the evolving challenges of process control, ensuring that users can achieve optimal performance and safety in their operations.