All ISS systems continue to function nominally, except as noted previously or below. It is Day 190 for the Expedition 4 crew (188 days on board ISS).

EVA-3 was successfully completed, and the Canadarm 2 has a new joint.
[Summary: EVA-3, by Franklin Chang-Diaz (EV1) and Philippe Perrin (EV2), began at 11:16 am EDT, delayed half an hour by a temporary problem with static interference of EV1's suit communications, perhaps from a small water spill. The spacewalkers first prepared EV1's worksite at the Lab module's underside with an APFR (articulated portable foot restraint). EV2 worked from a platform on the Shuttle manipulator (SRMS), operated by CDR Ken Cockrell. They then proceeded to remove and replace (R&R) the wrist roll joint of the SSRMS (space station remote manipulator system), which has a short in its backup electronics string preventing brake release. The R&R entailed: (1) installation of an insulating cover over the temperature-sensitive camera and light assembly on the LEE (latching end effector), i.e., the arm's "hand", (2) rotation of the arm by Bursch to provide bolt access, then power-down (1:35 pm), (3) removal of the washing-machine-sized LEE, almost 500-lbs. of mass, by loosening six special EDF (expandable diameter fastener) bolts (1:54 pm), and stowing the LEE temporarily on the Lab exterior, (4) removal of the WR joint(~2:25 pm) and its temporary stowage in the Shuttle cargo bay on the FRAM (flight releasable attachment mechanism) adjacent to the new joint (~2:30 pm), (5) transfer of the new joint to the worksite and installation on the wrist yaw (WY) joint by tightening its six EDFs and reconnecting power, video and data cables inside the arm (~3:25 pm), (6) reinstallation of the LEE, and (7) securing the failed joint on the FRAM for return to Earth. The spacewalkers returned to the JAL at 6:33pm, concluding EVA-3 after a duration of 7h 17m. It was the 41st spacewalk in support of ISS, bringing total assembly EVA time to 255h 58m, and the 16th EVA conducted from the ISS itself (total time: 88h 43m). It was also the 10th spacewalk conducted from the Joint Airlock (JAL).]

For EVA preparation, before switching to spacesuit (EMU) batteries, EV1, EV2 and IVA ("Paco" Lockhart) were given the Go to use the PSA (power supply assembly) in the Joint Airlock (JAL) as power source, which had a voltage spike glitch on 6/11. [Analysis of this anomaly is still ongoing, but it was decided that there was no risk to the spacewalkers or their hardware by using the PSA again. Instructions were uplinked for the event that the anomaly recurred.]

After attitude control handover to the Shuttle at 7:02 am EDT, CDR Cockrell maneuvered the stack to water dump attitude (LVLH Yaw/Pitch/Roll = 270/ 23/0). During supply/waste water venting from the Orbiter, he powered up the SRMS, then performed an hour of physical exercise, followed by termination of the water dump. Attitude control returned to the ISS CMGs (control moment gyros) at 9:42am for momentum management.

The second station reboost by the Shuttle yesterday was completed nominally at 10:07am EDT. The burn was exactly on target, with a total delta-V of .93 m/s and an increase in mean altitude of 1.5 km. A third reboost is planned for tomorrow at 8:33 am EDT.

As part of post-EVA operations, MS3 Walz and FE-1 Whitson tonight will start regeneration of the used Metox (metal oxide) contaminant absorption canisters in the Airlock Metox oven, postponed from 6/11 due to concern about a "wet" indication by a sensor of the JAL's CCAA (common cabin air assembly) heat exchanger). Start of regeneration was scheduled shortly before sleep time, to allow for a quick safety check 10 hours into the procedure, well after wakeup.

CDR Yuri Onufrienko completed another 1.5-hr ODNT (lower body negative pressure) workout session in the "Chibis" suit, assisted by CDR Valery Korzun. It was the second of three mandatory ODNT sessions scheduled for Onufrienko by the Russian MedOps protocol to prepare him for return to gravity. When exercising on the TVIS treadmill in motorized mode, his running speed is now limited to 9.6 km/h, with MCC-M concurrence. There are no restrictions on running speed for the non-motorized (passive) mode.

The Exp.4/Exp.5 crewmembers continued experience handovers.

MPLM loading is essentially complete, except for last-minute items. All MPLM systems (life support, thermal, etc.) continue to operate nominally. MPLM cabin air temperature was 22.9 deg C (73.2 F), and pressure 747.1 mmHg (14.45 psi).

MS3 Carl Walz and FE1 Sergei Treschev installed a CPA (control panel assembly) for the Node's nadir CBM (common berthing mechanism), allowing MCC-H to perform a complete checkout overnight in preparation for tomorrow's unberthing of the MPLM. [Each ACBM (active CBM) of the US segment contains 20 firmware controllers, packaged five each in four identical controller assemblies. Each CPA contains one capture latch controller and four powered-bolt controllers.]

The two FE-2s, Bursch and Treschev, completed the regular daily routine tasks of SOSh life support system maintenance and "delta" file preparation to update the IMS (inventory management system) database. FE-1 Peggy Whitson performed the regular daily autonomous payloads status check. Middeck descent checks were done in the morning (Walz) and evening (Bursch), and Walz also performed the daily BPS (biomass production system) descent check.

After EVA-3, oxygen from Progress 7P was used to repressurize the station interior to 760 mmHg (14.7 psia).

Data from the TEPC (tissue equivalent proportional counter) have become unreliable, and parts of the instrument were therefore stowed today in the MPLM for return.

Yesterday's crew news conference with international media received good coverage, including mentioning Walz and Bursch's new space flight record, and video footage of the Colorado wildfires from Shuttle cargo bay cameras appeared on the major news network.

Target areas for the U.S. earth observation program today were Lake Balkhash, Kazakhstan (of great interest is the area to the north and west of the western end of Lake Balkhash which the ISS track passed directly over. Land use is of interest and there is also an impact crater that may have been visible to the crew), Turkey (the orbit ran parallel the Taurus Mountains of southern Turkey. This is the source area of the Tigris and Euphrates Rivers. As the crew approached the northern coast of Turkey, they passed over the Pontic Mountains. Crew was asked to continue photography over the eastern end of the Black Sea, documenting water color and land use near the coast), Guinea (this part of coastal Africa is usually cloud covered, especially this time of year. Note land use along the coast and inland), Algeria, Tunisia (as the crew began the pass, they were to look to the left for a view of the Atlas Mountains. As they crossed the coast the city of Tunis was just to the right of the track. Then, they passed also pass to the west of Sicily. The city of Palermo was on the northern coast. As they crossed the coast of Italy, the city of Naples and Vesuvius; the volcano that buried Pompeii and Herculaneum in 79 A.D; should have been visible to the left or track), Bolivia, Brazil (the pass began at the foothills of the Andes Mountains. The satellite images of the area showed it to be unusually clear, note land use and rivers. In the Amazon basin of Brazil the crew was to document the land use and the tributaries to the Amazon River. The last tributaries merging into the Amazon were the Rio Araguaia and Rio Tocantins. The Amazon delta should be to the left of the track), France (crew to look to the right of track for the best weather over France. They should have passed near the city of Bordeaux and over the Garonne River. The next largest city was Lyon right of track. They then continued NE to take detailed views of the northern Rhone rift), Peru, Brazil (crew to note land use along the foothills of the Andes mountains. Also to photograph the Rio Napo and Putumayo, tributaries to the Amazon River), Alabama to Virginia (the city of Huntsville and MSFC were to the right of track, along the Tennessee River, with the Cumberland Plateau to the east. Crew was to look along the Appalachian Mountains for smog. A large high pressure area has dominated this area bringing higher than average temperatures and smog. Crew to try to capture the affected area and edges of the smog), Arizona, Colorado (at the beginning of this pass the crew should have seen the city of Phoenix. As they continued on to the state of Colorado they may have seen smoke from the Haymen fire just south of Denver. There is great concern about this fire as it threatens several subdivisions south of the city. Haze from the fires has also been reported over Denver. The Haymen fire is only one of seven active wild fires in Colorado), California, Oregon (nice opportunity to photograph the snow pack over the Cascade Range. Crew to continue photography onward to the Missouri river), Kiribati, Gilbert Islands (we do not have many photographs of these islands. The larger atolls, from south to north are, Miaana, Tarawa, Abaiang and Makin. Crew to try for nadir, or as close to nadir views as they could get).

CEO images can be viewed at the website http://eol.jsc.nasa.gov/

Environmental Control and Life Support (ECLSS) and Thermal Control (TCS):
Elektron O2 generator is powered On (32-amp mode). Vozdukh CO2 scrubber is ON in MANUAL cycle mode #5 (vacuum pump failed). U.S. CDRA CO2 scrubber is Off. BMP Harmful Impurities unit: Absorbent bed #1 in Purify mode, bed #2 in Purify mode.

SM Working Compartment: Pressure (mmHg) -- 753, temperature (deg C) -- 27.8, ppO2 (mmHg) -- 151.0, ppCO2 (mmHg) -- 2.5.
SM Transfer Compartment: Pressure (mmHg) -- 752, temperature (deg C) -- 19.9.
FGB Cabin: Pressure (mmHg) -- 752, temperature (deg C) -- 18.7.
Node: Pressure (mmHg) -- 741.98, temperature (deg C) -- 22.3 (shell); ppO2 (mmHg) -- n/a; ppCO2 (mmHg) -- n/a.
U.S. Lab: Pressure (mmHg) -- 744.21, temperature (deg C) -- 24.1, ppO2 (mmHg) -- n/a; ppCO2 (mmHg) -- n/a;
Joint Airlock (Equip. Lock): Pressure (mmHg) -- 744.11, temperature (deg C) -- 25.1; shell heater temp (deg C) -- 24.0, ppO2 (mmHg) -- n/a; ppCO2 (mmHg) -- n/a.
PMA-1: Shell heater temp (deg C) -- 22.3
PMA-2: Shell heater temp (deg C) -- 19.7

(Note: Partial pressures ppO2 and ppCO2 in U.S. segment [USOS] not available because MCA [major constituent analyzer] is failed and in Extended Life mode [= a state that preserves mass spectrometer vacuum but produces no pp data]). MSA (mass spectrometer assembly) and VGA (verification gas assembly) have been removed for return to Earth.

Electrical Power Systems (EPS):
Beta Gimbal Assembly (BGA) 2B in Autotrack mode, BGA 4B in Autotrack mode.
SM batteries: (data not available)
FGB: Battery #3 is offline (ROM mode). All other batteries (5) are in "partial charge" mode.
Plasma Contactor Unit PCU-1 in Discharge mode; PCU-2 in Discharge mode.

Thermal Control Systems:
Air conditioner SKV-1 is Off. SKV-2 is On.

Command & Data Handling Systems:
C&C-3 MDM is prime, C&C-2 is back-up, and C&C-1 is in standby.
GNC-1 MDM is prime; GNC-2 is Backup.
LA-1, LA-2 and LA-3 MDMs are all operating.
PL-1 MDM is operational; PL-2 MDM on Standby.
APS-1 (automated payload switch #1) and APS-2 are both On.
SM Terminal Computer (TVM): 2 redundant lanes (of 3) operational.
SM Central Computer (TsVM): 2 redundant lanes (of 3) operational.

Communications Systems:
All Russian communications & tracking systems are nominal.
S-band is operating nominally.
Ku-band is operating nominally.
Audio subsystem operating nominally.
Video subsystem operating nominally.
MCOR (medium-rate communications outage recorder) is operating nominally.

Robotics:
SSRMS/Canadarm2 at WR joint R&R worksite.
RWS (robotics workstations) are On.
SSRMS Prime string Wrist Roll (WR) joint replaced today (UF-2 EVA-3).

ISS Orbit (as of this morning, 1:44 am EDT [= epoch]):
Mean altitude -- 387.9 km
Apogee -- 391.7 km
Perigee -- 384.1 km
Period -- 92.3 min.
Inclination (to Equator) -- 51.64 deg
Eccentricity -- 0.000563
Orbits per 24-hr. day -- 15.60
Altitude increase -- 1500 m (mean) in last 24 hours
Revolutions since FGB/Zarya launch (Nov. '98) -- 20341
Current Flight Attitude -- LVLH (local vertical/local horizontal = "earth-fixed": z-axis in local vertical, x-axis in velocity vector [yaw: 0 deg, pitch: 23 deg., roll: 0 deg])

For more on ISS orbit and naked-eye visibility dates/times, see
http://www.hq.nasa.gov/osf/station/viewing/issvis.html

Source: NASA