STS-99 (Endeavour)

 2000-010A

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STS-99 launch mass is 116374 kg, landing mass is 102362 kg. SRTM is about 14700 kg.

Total OMS/RCS fuel mass on the orbiter was 12120 kg.

A thruster on the mast failed to work, but that had only a limited impact on the mission. Initially the science program was to be cut short a day to allow for a possible spacewalk to save the mast if it failed to retract, but then NASA decided to just jettison the mast if there were problems. Indeed, on the first attempt the mast did not latch when retracted and it looked for several hours as if a jettison might be needed. But after several tries the canister latched safely.

The Shuttle Flight Weight Summary reports 118 kg deployed from STS-99, but this seems to be an error.

STS-99
Date	Time	Event	Orbit
1999 Dec 5		Tow to VAB/1
1999 Dec 6		ET mate
1999 Dec 13	1200	Roll to LC39A
2000 Feb 11	1743:40	Launch	LC39A
	1745:43	T+2:03 SRB cutoff
	1745:45	T+2:05 SRB sep
	1745:56	T+2:16 OMS assist 1:42
	1747:38	OMS Ass CO
	1752:03	T+8:34 (or T+8:23) MECO
	1752:23	ET sep	80? x 225
	1818:40	OMS-2 1:55 55.7 m/s	89.24 227 x 245 x 57.0
	1820:35	OMS-2 CO
	1916	PLBD open
	2157:40	RCS-1 7.6s 0.5m/s
	2327	Mast deploy begins
	2344	Mast deploy complete 61m
2000 Feb 12	0531	Begin mapping
2000 Feb 13	0743	RCS trim 1 flycast, 15s 1.0m/s
2000 Feb 14	0836:40	RCS trim 2 17s 1.1m/s
			89.18 226 x 241 x 57.0
2000 Feb 15	0722	RCS Trim 3 15s 1.1m/s
2000 Feb 16	0806	RCS Trim 4 11s 0.8m/s
2000 Feb 17	0809	RCS Trim 5 12s 0.9m/s
2000 Feb 18	0739	RCS Trim 6 15s 1.1m/s
2000 Feb 19	2036	RCS Trim 7 21s 1.4m/s
2000 Feb 21	1156	end of mapping
	1233	OBA to stow position
	1317	Mast stow begins
	1339	Mast stowed but not latched
	1550	Mast stow successful
2000 Feb 22	1815	PLBD closed	89.12 226 x 235 x 57.0
	2225:10	Deorbit 72m/s 2:19
	2217:30	OMS cutoff	-20? x 230 x 57.0
	2250:08	Entry interface
	2322:24	Landing KSC RW33
	2322:35	NGTD
	2323:25	Wheels stop
2000 Feb 23	0430	Tow to OPF/2