Northrop Grumman Selected by UK Ministry of Defence for Mode S Upgrade to Identification Friend or Foe Systems on Sentry E-3D AWACS Aircraft

By Northrop Grumman Corporation, PRNE
Thursday, November 11, 2010

LONDON, November 12, 2010 - Northrop Grumman Corporation (NYSE: NOC) has been awarded a contract by
the UK Ministry of Defence (MoD) to design, develop, integrate, test and
support the Mode S upgrade to the Identification Friend or Foe (IFF)
Interrogator for the Sentry E-3D Airborne Warning and Control System (AWACS)
aircraft based at RAF Waddington.

The IFF interrogator set is a sophisticated airborne defence system that
provides a long range rapid early warning and detection capability allowing
discrimination between friendly and hostile forces. The Mode S system will
enable the aircraft to be used in controlled airspace.

The contract modification for Mode S is valued at approximately 42.7
million pounds Sterling
over three years.

Work will be performed under Northrop Grumman's existing Sentry E-3D
Whole Life Support Programme (WLSP) and elements of the work were considered
for buy or build and subsequent competitive subcontracts. It will be the
largest modification the company has carried out to date for the Sentry
aircraft fleet and will help maintain their compliance with future global air
traffic management requirements.

"The Sentry WLSP is one of the largest single programmes that Northrop
Grumman has in the UK," said Sir Nigel Essenhigh, UK chairman of Northrop
Grumman. "This award not only confirms our commitment to the UK but also
demonstrates the continuing success of the joint working relationship that we
have with the MoD in delivering best value for money."

The work will be carried out at RAF Waddington, UK as well as at Northrop
Grumman's facilities in Herndon, Va., Warner Robins, Ga., and Melbourne, Fla.

"This project is extremely significant for the continuing role of our
AWACS platform," said Sandy McGregor, Sentry project team leader. "I am very
pleased with the total team effort shown by the Sentry Project Team and our
prime contractor Northrop Grumman to agree to this project."

Northrop Grumman delivers the WLSP for the Sentry E-3D AWACS fleet and is
on contract until 2025. The company acts as the design organization,
providing long term UK-based technical support to the programme with some 50
engineers located at RAF Waddington. Working in partnership with the Sentry
IPT, the Northrop Grumman team provides the complete range of through-life
services needed to support the Sentry E-3D AWACS aircraft through to its
out-of-service date. Northrop Grumman also provides the radar and in-service
support for the radar. Members of Northrop Grumman's Joint Sentry Support
Team include BAE Systems and AAR.

Northrop Grumman in the UK operates from a number of locations: London,
Fareham, Chester, Coventry, Hendon, New Malden, Peterborough, RAF Waddington
and Solihull, providing avionics, communications, electronic warfare systems,
marine navigation systems, robotics, C4ISR solutions and mission planning, IT
systems and software development.

Northrop Grumman Corporation is a global defence and technology company
whose 120,000 employees provide innovative systems, products, and solutions
in information and services, electronics, aerospace and shipbuilding to
government and commercial customers worldwide. Please visit for more information.

Ken Beedle, London, +44-207-747-1910, or +-44-7787-174092, Ken.beedle at, or Leah Smith, Herndon, +1-703-713-4616, leah.smith at, both of Northrop Grumman Corporation

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