Aerojet to Conduct Final Atlas V Solid Rocket Motor Test

SACRAMENTO, Calif., Dec. 9, 2002 -- Aerojet, a GenCorp Inc. (NYSE: GY) company, will conduct the final milestone test of its Atlas V rocket motor the morning of Tuesday, December 10, 2002. The test marks the third - and final - firing of the Atlas V rocket motor at the Sacramento site. Scheduled for 9:00 a.m., the test could take place any time between 9:00 a.m. and 4:00 p.m. as warranted by local weather conditions.

If last minute conditions prohibit testing on Tuesday, December 10, the test will be rescheduled for either Wednesday, December 11 or Thursday, December 12, pending appropriate conditions.

The Company notes the cooperation of the media in disbursing information on previous tests, and would again appreciate advanced release for this planned final test. Being mindful of the current state of affairs, advanced notice of the test will serve to alert local residents and businesses, and quell any concerns related to sound or smoke.

This test will again produce a loud, steady roar (lasting approximately 95 seconds) that may be heard within a 15-mile radius of Aerojet's facility, located south of Highway 50 at Hazel Avenue. During the test, some vibration may be felt and smoke will rise into the air in areas adjacent to the facility.

The Atlas V test is a fixed, stationary test, and not a launch. The test marks the third of three qualification motor firings prior to full production and shipment for use on the Atlas V launch vehicle.

Up-to-date information regarding Aerojet's testing activity can be obtained by calling Aerojet's Community Information Line at (916) 355-2200.

Aerojet is a world-recognized aerospace and defense leader principally serving the missile and space propulsion, and defense and armaments markets. GenCorp Inc. is a technology-based manufacturer with leading positions in aerospace and defense, pharmaceutical and automotive industries. For more information, please visit http://www.aerojet.com and http://www.gencorp.com.

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