STS-30

Atlantis (4)

USA

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Launch, orbit and landing data

Launch date:	04.05.1989
Launch time:	18:46 UTC
Launch site:	Cape Canaveral (KSC)
Launch pad:	39-B
Altitude:	340 km
Inclination:	28,8°
Landing date:	08.05.1989
Landing time:	19:43 UTC
Landing site:	Edwards AFB

Crew

No.	Surname	Given names	Position	Flight No.	Duration	Orbits
1	Walker	David Mathieson	CDR	2	4d 00h 56m	65
2	Grabe	Ronald John	PLT	2	4d 00h 56m	65
3	Lee	Mark Charles	MSP	1	4d 00h 56m	65
4	Thagard	Norman Earl	MSP	3	4d 00h 56m	65
5	Cleave	Mary Louise	MSP	2	4d 00h 56m	65

Crew seating arrangement

Launch
1	Walker
2	Grabe
3	Lee
4	Thagard
5	Cleave

Landing
1	Walker
2	Grabe
3	Cleave
4	Thagard
5	Lee

Flight

Launch from Cape Canaveral (KSC); landing on Edwards AFB.

The launch was originally scheduled for April 28, 1989, but was scrubbed at T-31 seconds because of a problem with the liquid hydrogen recirculation pump on Space Shuttle Main Engine (SSME) No. 1 and a vapor leak in the liquid hydrogen recirculation line between the orbiter and external tank.

Main goal of this mission was the deploying of Magellan/Venus radar mapper on flight day 1. Several secondary payloads as Earth observation an photography, biology, medicine and materials sciences were onboard.

One of five general purpose computers (GPC) failed in orbit and was successfully replaced during the mission.