ISS MER Daily Report 21 Apr 2001

• During a communication check from the Orbiter to the Station, the crew reported no comm on the UHF. Station crew tried to call the Orbiter with no joy as well. Docking occurred without Station to Orbiter direct communication.


• Both PCUs were placed in standby mode today for the Plasma DTO.


• MCA is currently in Rapid Sampling Mode due to high levels of O2.

SMCC: SMCC 1 & 3 Operating in the Redundant set.

SMTC: 1 & 2 Operating in the Redundant Set

FGB MDM: FGB-2 ON/FGB-1 Off

N1-2 Primary/N1-1 Secondary

PV MDM: 2B Prime/4B Backup

INT: INT-2 Operating/INT-1OFF

GNC: GNC-1 Primary/GNC-2 Backup

LA: LA-1, LA-2 & LA-3 Operating

PMCU: PMCU-1 Operating/PMCU-2 OFF

EETCS Loops A&B running on A pumps

PTCS: 6 Node 1 shell htrs on; 1 PMA1 shell htrs on; 2 PMA 2 Shell Htrs

ITCS Dual loop mode

FGB Battery 4 offline

SM Batteries-in complete charge mode

SM ARCU 22 ON

Both channels fully operational

BGAs in Auto Track Mode

Vozdukh — On

BMP — ON

CKB1 — On; CKB2 — OFF

SM SD#6 Failed

FGB SD 1, 3,4,& 5 — Off

Rapid Depress Response inhibited

Low Pressure warning Enabled

Response to Smoke/Fire Inhibited

Cabin Fan — On

Aft Port IMV Fan On

Aft Port, Deck Aft, Fwd Port & Fwd Stbd IMV valves Open

SD-1 enabled, SD-2 OFF

PPRV’s not Capped

Cabin Pressure FDIR – Inhibited

PCA: LAB PCA in Mon, Rapid depress FDIR Enabled

IMV: AFT valves open; Aft Port Fan — ON

SD’s: LAB1PD1, LAB1SD5, & LAB1D6 Enabled

CCAA: LAB1P6 Full Up

CDRA: Override/Stop complete.

TCCS: Full Up State

MCA: Operational, Rapid Sampling Mode

VES: VRS&VES 2.5″ valves closed

Attitude Control Mode: Attitude Hold

Attitude: 0, 23.3, 0 (TEA)

Average Altitude: 388.9 km x 378 km

FGB Komparus Deactivated

S-Band High Data Rate Mode

ECS Deactivated (will only be used for video con)

• The MCOR is operating nominally. The MCOR was restarted yesterday and allowed to operate beyond 40°
  C. The fans kicked on when the MCOR reached 43°
  C and subsequently cooled to below 40°
  C. MCOR has maintained heartbeat.

• Vozdukh is operational. Yesterday, MCC-M reported beds 1 and 2 were operating at a reduced flow rate after attempts to restore bed #3. The crew reported seeing “poppy seed” sized white particles from bed 3 during the troubleshooting activities. The particles are believed to be from the absorbent beds. Today, the crew performed the initial steps of the reduced airflow troubleshooting procedure and nominal airflow was restored to the two beds. Bed 3 remains non-recoverable.


• The PPL for the Flight 6A Electrical Power System load shed table was uplinked successful.

• Electron O2 generation was reduced from the 32 amp rate to the 16 amp rate. O2 levels were reaching the flight rule limit of 24%.


• LAB UOP #7 was removed in preparation for the RWS by-pass cable installation which will occur shortly after docking. (Around noon local time) The UOP may be installed in the Node to replace the failed UOP later in the mission.

• Docking successful at GMT 2110/111:14:00 (9:00am CDT)