All ISS systems continue to function nominally, except as noted previously or below. Today at 5:23 pm EDT the Expedition Five crewmembers pass their 100th Day in Space mark (STS-111 launched on 6/5 at 5:22:49 pm EDT).

After wakeup, CDR Korzun and FE-1 Whitson received congratulations for their stellar robotics performance in yesterday's Node ACBM (active common docking module) survey. The MSS (mobile service system) worked flawlessly, and the SSRMS cameras got excellent video for the CBM contamination investigation. Black and white FOD (foreign object debris) were discovered under all four cover petals, and a course of action is being determined.

Korzun disconnected the UOP power cable on the RWS DCP (robotics workstation display and control panel).

Peggy Whitson unstowed and configured the equipment for the HRF (human research facility) Ultrasound (US) program, an investigation of Space Medicine using an ultrasound/Doppler system to obtain images of internal organs of the human body in zero-G. Today's task was an operational checkout of the system involving still US images of Whitson for downlink to ground physicians via Ku-band. Afterwards, Peggy deactivated and stowed the equipment, including the HRF laptop with its image collector software. [The ultrasound equipment is part of HRF Rack 1, launched on 5A.1 in March 2001. Its applications include echocardiography, abdominal US (deep organ), vascular US, muscle and tendon US, transcranial US and US contrast studies.]

While Peggy was working on the US examination, Korzun and FE-2 Sergei Treschev performed the periodic in-depth inspection of the TVIS treadmill chassis, with special attention on the two areas of the chassis truss where failed roller axles were dropped.

Treschev later removed the IWIS RSU (internal wireless instrumentation system remote sensing unit) in the Service Module (SM), installed yesterday. Peggy Whitson then transferred it to the Node, where she recopied the IWIS sensor data of last night's thruster firings.

The thruster firing tests yesterday were completed nominally, and a range of sensors, activated by the crew and Flight Control, collected the desired structures data.

Per MCC-M request, the two cosmonauts performed an inventory/audit of a long list of Orlan-M spacesuit replaceable equipment such as gloves and oxygen tanks, some of it for disposal on Progress-246 (8P), others for storage.

Treschev and Korzun also completed their weekly NTXN Interactions sessions, filling in the regular mood, group and journal questionnaire on the MEC (medical equipment computer).

The daily routine maintenance chores today were performed by Treschev (SOSh life support system servicing), Whitson (Lab payloads status checkup), and Korzun (IMS inventory update file preparation).

All crewmembers completed their regular physical exercise program on TVIS, RED (resistive exerciser), CEVIS (cycle ergometer) and VELO (cycle with load trainer).

Valery Korzun and Sergei Treschev supported a Russian PAO event by downlinking a televised message of greeting for the 145th anniversary of the birthday of Konstantin Eduardovich Tsiolkovsky on 9/17 (Tuesday). On that day, as for the last 37 years, a scientific conference at Kaluga near Moscow, where Tsiolkovsky worked as a teacher and died on September 19, 1935, will celebrate the event. [Tsiolkovsky, the "Father of Space Flight", was the first in the world who proposed a scientifically credible theory of human space exploration and the necessity of humans to inhabit outer space, as early as 1883. Still living in Kaluga today are one granddaughter and three great-granddaughters.]

In the late afternoon, the crew's schedule calls for a tagup with the STS-112/9A crew, followed by the weekly teleconference with the Flight Director, both via S-band).

Last Wednesday's reboost by Progress-246 (8P) used approximately 121 kg (267 lb) of propellants and yielded a delta-V of 1.6 m/sec, increasing mean altitude by 2.4 km.

CDRA Update: The crew indicated that it might be possible to repair the leaking hydroflow coupling of the CDRA (carbon dioxide removal assembly) without rotating the AR (atmosphere revitalization) rack. Engineers are reviewing the information and will conduct ground tests to develop a suitable procedure using this access.

During their SM window inspection on 9/11 the cosmonauts discovered a few more items of damage to external panes.

The new smoke detector (SD) in EXPRESS Rack 2 (ER2), installed on 8/31, was successfully checked out on 9/11.

Today's targets of the U.S. CEO (crew earth observations) program were Damascus, Syria (nadir pass and just right of track. ESC [electronic still camera] requested), Riyadh, Saudi Arabia (nadir pass; ESC), Western Mediterranean Dust (dust from North Africa being transported NE towards Italy ahead of the storm in southern France), Barcelona, Spain (nadir pass; ESC), Tunis, Tunisia (nadir pass; ESC), Congo-Zimbabwe Biomass Burning (air pollution accumulation over the central continental plateau under an intense high pressure system), St. Thomas Island (nadir pass; ESC), St. John Island (nadir pass; ESC), St. Croix Island (nadir pass; ESC), Lower Amazon River Basin (good nadir pass. Crew to look left and right of track to shoot coastlines), and Necker Island (crew to look just right of nadir for this small check-mark shaped island. ESC camera).

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 (16-amp mode), on backup pump. Vozdukh CO2 scrubber is ON in MANUAL cycle mode #5, i.e., 10-min. cycle time (vacuum pump failed). U.S. CDRA CO2 scrubber is offline. BMP Harmful Impurities unit: Absorbent bed #1 in Purify mode, bed #2 in Purify mode.

SM Working Compartment: Pressure (mmHg) -- 751, temperature (deg C) -- 26.5, ppO2 (mmHg) -- 159.5, ppCO2 (mmHg) -- 3.8.
SM Transfer Compartment: Pressure (mmHg) -- 751, temperature (deg C) -- 20.7.
FGB Cabin: Pressure (mmHg) -- 752, temperature (deg C) -- 20.3.
Node: Pressure (mmHg) -- 745.80, temperature (deg C) -- 23.5 (shell); ppO2 (mmHg) -- n/a; ppCO2 (mmHg) -- n/a.
U.S. Lab: Pressure (mmHg) -- 751.79, temperature (deg C) -- 24.9, ppO2 (mmHg) -- 159.6*; ppCO2 (mmHg) -- 5.3*;
Joint Airlock (Equip. Lock): Pressure (mmHg) -- 747.7, temperature (deg C) -- 24.7; shell heater temp (deg C) -- 23.5, ppO2 (mmHg) -- n/a; ppCO2 (mmHg) -- n/a.
PMA-1: Shell heater temp (deg C) -- 23.7
PMA-2: Shell heater temp (deg C) -- 18.6

(*Note: Partial pressures ppO2 and ppCO2 in Node are obtained from the recently restored MCA [major constituent analyzer] and are not considered reliable until purge of water vapor within sample lines has been completed.

Electrical Power Systems (EPS):
Both P6 channels fully operational. Beta Gimbal Assembly (BGA) 2B and BGA 4B in "Parked" (Blind) mode (non solar-tracking), for dual-angle ops.
SM batteries: Battery #1 is offline, battery #6 is in "Cycle" mode; all other batteries (6) are in "Partial Charge" mode. Data are static.
FGB batteries: Battery #4 is in "Storage" mode (offline); all other batteries (5) are in "Partial Charge" mode.
Plasma Contactor Unit PCU-1 in Standby mode; PCU-2 in Standby mode.

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

Command & Data Handling Systems:
C&C-3 MDM is prime, C&C-2 is back-up, and C&C-1 is in standby.
GNC-2 MDM is prime; GNC-1 is Backup.
LA-1, LA-2 and LA-3 MDMs are all operating.
PL-1 MDM is Off (cold backup); PL-2 MDM is operating as primary.
APS-1 (automated payload switch #1) and APS-2 are both On.
SM Terminal Computer (TVM): 3 redundant lanes (of 3) operational.
SM Central Computer (TsVM): 2 redundant lanes (of 3) operational; #3 dropped out on 8/29.

Attitude Source:
3 CMGs on-line.
State vector -- US GPS (SIGI string 1)
Attitude -- Russian segment
Angular rates -- US RGA1 (rate gyro assembly 1)

Communications & Tracking 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 MBS PDGF1 (mobile base system/power & data grapple fixture 1) and PDGF2, with Keep Alive power on both strings. SSRMS based on PDGF1 (LEE A, derigidized)
MBS: Keep Alive power on both strings.
RWS (robotics workstations): Lab RWS is Off; Cupola RWS is Off.

ISS Orbit (as of this morning, 7:49am EDT [= epoch]):
Mean altitude -- 390.3 km
Apogee -- 402.8 km
Perigee -- 377.8 km
Period -- 92.4 min.
Inclination (to Equator) -- 51.64 deg
Eccentricity -- 0.0018436
Orbits per 24-hr. day -- 15.59
Solar Beta Angle -- 19.2 deg (magnitude increasing)
Altitude decrease -- 215 m (mean) in last 24 hours
Revolutions since FGB/Zarya launch (Nov. '98) -- 21780
Current Flight Attitude -- LVLH (local vertical/local horizontal = "earth-fixed": z-axis in local vertical, x-axis in velocity vector [yaw: -10 deg, pitch: -7.8 deg, roll: 0 deg]). Transition from LVLH (Russian: OSK) back to XPOP (Russian: RSO) will be on 9/20.

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

Source: NASA