**POLAR Spacecraft Status As of: Tues May 17 12:00 EST**

*(changes from last week in bold border)*

+----------+--------+--------+--------+---------+---------+---------+
| **Subs   | **NOAA | **NOAA | **NOAA | **NOA   | ##### N | ##### N |
| ystem/** | -12D** | -14J** | -15K** | A-16L** | OAA-17M | OAA-N18 |
|          |        |        |        |         |         |         |
| **Com    | AM:    | AM:    | AM:    | PM:     | AM:     | Planned |
| ponent** | 1      | 2      | 1      | 1441=AN | 2225=AN | PM      |
|          | 651=AN | 039=AN | 806=AN |         |         |         |
|          |        |        |        | GAC&LAC | GAC&LAC | Plan    |
|          | STIP   | STIP   | GAC    | data    | data    | A       |
|          | data   | data   | data   |         |         | N=14:00 |
|          | only   | only   | only   |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **LA     | 05     | 12     | 05     | 0       | 6/24/02 | #       |
| UNCHED** | /14/91 | /30/94 | /13/98 | 9/21/00 |         | ######  |
|          |        |        |        |         |         | 20May05 |
|          |        |        |        |         |         |  10:30Z |
|          |        |        |        |         |         |         |
|          |        |        |        |         |         | Various |
|          |        |        |        |         |         | slips   |
+----------+--------+--------+--------+---------+---------+---------+
| **CNTL   | OBP2   | OBP2   | OBP2   | OBP2    | OBP2    | Dress   |
| OBP**    |        |        |        |         |         | R       |
|          |        | OBP1   |        |         |         | ehearse |
|          |        | inope  |        |         |         | #1      |
|          |        | rative |        |         |         |         |
|          |        |        |        |         |         | Co      |
|          |        |        |        |         |         | mpleted |
|          |        |        |        |         |         | 13Jan   |
+----------+--------+--------+--------+---------+---------+---------+
| **BUS**  | B-BUS  | B-BUS  | B-BUS  | B-BUS   | B-BUS   | Dress   |
|          |        |        |        |         |         | R       |
|          | XSU-1  | XSU2   | XSU-1  | XSU-1   | XSU-1   | ehearse |
|          |        | (XSU1  |        |         |         | #2      |
|          |        | inop)  |        | XSU1    |         |         |
|          |        |        |        | TOAR    |         | Co      |
|          |        |        |        | 444     |         | mpleted |
|          |        |        |        |         |         | 14Apr05 |
+----------+--------+--------+--------+---------+---------+---------+
| **BUS    | NO     | NO     | NO     | NO      | NO      | Dress   |
| VETO**   |        |        |        |         |         | r       |
|          |        |        |        |         |         | ehearse |
|          |        |        |        |         |         | #3      |
|          |        |        |        |         |         |         |
|          |        |        |        |         |         | Co      |
|          |        |        |        |         |         | mpleted |
|          |        |        |        |         |         | 9 May   |
|          |        |        |        |         |         | 05      |
+----------+--------+--------+--------+---------+---------+---------+
| *        | [N     | [N     | [N     | #####   | #####   | New     |
| *ADACS** | ominal | ominal | ominal | # [Nomi | # [Nomi |         |
|          | Mode]  | Mode]  | Mode]  | nal Mod | nal Mod | ring    |
| X=Yaw    | {.unde | {.unde | {.unde | e]{.und | e]{.und | laser   |
|          | rline} | rline} | rline} | erline} | erline} | gyro    |
| Y=Roll   |        |        |        |         |         |         |
|          | RG     | Rgm    | Rg     | Rgmode= | Rgmode= |         |
| Z=Pitch  | mode=M | ode=Di | mode=M | Monitor | Monitor |         |
|          | onitor | sabled | onitor |         |         |         |
|          |        |        |        | Gyro-3  | Gyro-3  |         |
|          | Gyro   | Gyro   | Gyro-3 | Off     | Off     |         |
|          | cha    | cha    | Off    | 6/10/04 | 6/10/04 |         |
|          | ns=XYZ | ns=XYZ | 6      |         |         |         |
|          |        |        | /26/00 | Gyro    | Gyro    |         |
|          |        | SS     | Gyro   | ch      | ch      |         |
|          |        | check  | cha    | ans=AAA | ans=AAB |         |
|          |        | Di     | ns=AAB |         |         |         |
|          |        | sabled |        |         |         |         |
|          |        | when   | N2 Low |         |         |         |
|          |        | mo     | PSI    |         |         |         |
|          |        | de=YGC | i      |         |         |         |
|          |        |        | nvalid |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **RXO**  | PRI    | PRI    | PRI    | PRI     | PRI     |         |
|          |        |        |        |         |         |         |
|          | BU     | BU     | daily  | Daily   | Daily   |         |
|          | random | random | bias   | Bias    | Bias    |         |
|          | e      | e      | -8 mS  | --5.5   | --3 mS  |         |
|          | nables | nables |        | mS      |         |         |
|          |        | daily  | +100   |         |         |         |
|          | daily  | bia    | mS     | -100 mS |         |         |
|          | bi     | s--7.0 | 31Au04 | 31Au04  |         |         |
|          | as+6.5 | mS     |        |         |         |         |
|          | mS     |        |        |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **CLOCK  | 2      | 2      | 2      | 2       | 2       |         |
| DIV**    |        |        |        |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **MIRP** | Ex     | Ex     | Ex     | E       | E       |         |
|          | ternal | ternal | ternal | xternal | xternal |         |
|          | Synch  | Synch  | Synch  | Sync    | Sync    |         |
|          |        |        | R      |         |         |         |
|          | R      | R      | ephase | Rephase | Rephase |         |
|          | ephase | ephase | 0730   | each    | Enabled |         |
|          | E      | 0730   | daily  | orbit   |         |         |
|          | nabled | Daily  |        |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **TIP    | 1      | 1      | 2      | 2       | 1       |         |
| SIDE**   |        |        |        |         |         |         |
|          |        |        | (since | since   | Analog  |         |
|          |        |        | 4/     | 4/18/05 | telem   |         |
|          |        |        | 23/03) |         | d       |         |
|          |        |        |        |         | rifting |         |
|          |        |        | 3      |         |         |         |
|          |        |        | Ch     |         |         |         |
|          |        |        | annels |         |         |         |
|          |        |        | inop   |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **DTRs** | 3A, 4, | 1, 2B, | 1, 2,  | 1       | 1,2,3,4 | All     |
|          | 5B     | 5      | 3, 4   | ,2,3,4A |         | solid   |
|          |        | Safe   | Saf    |         | Safes   | state   |
|          | Saf    | state- | estate | Sa      | tate=1B | digital |
|          | estate | 1B     | 1B EOT | festate |         | re      |
|          | 5B     |        |        | 3A      | D       | corders |
|          |        |        |        |         | TR2-SSR |         |
|          |        |        |        | 4B STIP |         |         |
|          |        |        |        | only    |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **VTX**  | #1 ON  | OFF    | #1 ON  | INOP    | #2 ON   | #       |
|          |        |        |        |         |         | 1=137.1 |
| (APT     | 137.50 | Since  | (16    | OFF     | 137.62  | MHZ     |
| data)    | MHZ    | 8      | May    | since   | MHZ     | #2=1    |
|          |        | /14/02 | 1      | 1       |         | 37.9125 |
|          |        |        | 8:15Z) | 1/15/00 |         | MHZ     |
|          |        |        |        |         |         |         |
|          |        |        | End    |         |         |         |
|          |        |        | N12    |         |         |         |
|          |        |        | Co     |         |         |         |
|          |        |        | nflict |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **BTX**  | #1     | #2     | #1     | #1      | ###     |         |
|          |        |        |        |         | #### #2 |         |
|          | 136.77 | 137.77 | 137.35 | 137.35  |         |         |
|          | MHZ    | MHZ    | MHZ    | MHZ     | 137.77  |         |
|          |        |        |        |         | MHZ     |         |
+----------+--------+--------+--------+---------+---------+---------+
| **STX**  | 1 --   | 3 --   | 2-Omni | 1 --    | 3 --    | STX-3   |
|          | HRPT;  | HRPT   | HRPT   | HRPT;   | HRPT    |         |
| #        |        |        |        |         |         | R       |
| 1=1698.0 | 2,3 -  | 2, 1   | 4-Pl   | 2--     | TOAR424 | eplaced |
| mhz      | Pl     | --     | ayback | Pl      | low     | at VAFB |
|          | ayback | Pl     |        | ayback; | power   |         |
| #        |        | ayback | 1,     |         |         |         |
| 2=1702.5 |        |        | 2,3-De | 4 --    | 2 & 4   |         |
| mhz      |        |        | graded | P       | P       |         |
|          |        |        |        | layback | layback |         |
| #        |        |        |        |         |         |         |
| 3=1707.0 |        |        |        | 3 low   | 1-      |         |
| mhz      |        |        |        | power   | Standby |         |
|          |        |        |        | unused  |         |         |
| #        |        |        |        |         | STX-1   |         |
| 4=2247.5 |        |        |        |         | output  |         |
| mhz      |        |        |        |         | power   |         |
|          |        |        |        |         | drop    |         |
|          |        |        |        |         | TOAR    |         |
|          |        |        |        |         | 443.    |         |
+----------+--------+--------+--------+---------+---------+---------+
| #        | [Ar    | [Array | [Array | [Array  | [Array  |         |
| ## POWER | rayOff | Off    | Off    | Off     | Off.    |         |
|          | +50]   | -55]   | -45]   | -4      | --4     |         |
| (Array   | {.unde | {.unde | {.unde | 0]{.und | 0]{.und |         |
| offset   | rline} | rline} | rline} | erline} | erline} |         |
| and CANT |        |        |        |         |         |         |
| angle,   | since  | Since  | Since  | Since   | Since   |         |
| charge & | 8      | 8      | 1      | 7/16/02 | 1/29/04 |         |
| V/T      | /31/04 | /21/03 | /25/01 |         |         |         |
| rates,   |        |        |        | Eclipse | Eclipse |         |
| eclipse  | E      | E      | E      | all     | all     |         |
| states   | clipse | clipse | clipse | year    | year    |         |
| and sun  | season | all    | Season |         |         |         |
| angle)   | 21Apr  | year   | s      | Sun     | Sun     |         |
|          | -17Aug |        | tarted | Angle   | Angle   |         |
|          |        | Sun    | 16 May | 56      | at 71   |         |
|          | Batt   | angle  |        |         |         |         |
|          | UVtrip | 50     | Sun    | Steady  | Uptrend |         |
|          | 7      |        | Angle  | trend   | to 72   |         |
|          | /25/04 | up     | 28,    |         | at      |         |
|          |        | trend  | up-    | Batts   |         |         |
|          | Sun    | to 52  | trend  | 1-3=    | the end |         |
|          | Angle  | in     | to 32  | LRC     | of May  |         |
|          | 33     | June   | in     |         |         |         |
|          |        |        | June   | V/T=4/8 | Batts   |         |
|          | up to  | Batts  |        |         | 1-3=    |         |
|          | 37     | 1-3=   | Batts  | SA      | LRC     |         |
|          | mi     | LRC    | 1-3=   | CANT=22 |         |         |
|          | d-June |        | LRC    | degs    | V/T=    |         |
|          |        | Batts  |        |         | 4/8     |         |
|          | Batts  | 1&3V/  | V      | SADPOS  |         |         |
|          | 1      | T=7/11 | /T=7/9 | timer   | SA      |         |
|          | &2=LRC |        |        | in      | CANT=37 |         |
|          |        | Batt2  | SA     | creased | degs    |         |
|          | V/T=4  | V      | C      | 5 Apr   |         |         |
|          |        | T=8/11 | ANT=37 |         | SADPOS  |         |
|          | Shunt  |        | degs   |         | timer   |         |
|          | de     | SS     |        |         | in      |         |
|          | graded | t      |        |         | creased |         |
|          |        | rigger |        |         | 5 Apr   |         |
|          | SA     | =18.98 |        |         |         |         |
|          | C      |        |        |         |         |         |
|          | ANT=37 | Shunt  |        |         |         |         |
|          | degs   | De     |        |         |         |         |
|          |        | graded |        |         |         |         |
|          |        |        |        |         |         |         |
|          |        | SA     |        |         |         |         |
|          |        | C      |        |         |         |         |
|          |        | ANT=22 |        |         |         |         |
|          |        | degs   |        |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| *        | N      | INOP   | N      | Oper    | ###     | New     |
| *AVHRR** | ominal |        | ominal | ational | Nominal | br      |
|          |        | Scan   |        |         |         | ushless |
|          |        | motor  | Rare   | TCE24   | 3A-B    | scan    |
|          |        | s      | major  | OFF     | switch  | motors  |
|          |        | talled | scan   | 4/14/04 | enabled |         |
|          |        |        | motor  |         |         |         |
|          |        | 14 Apr | s      | Occ     |         |         |
|          |        | 04     | urges. | asional |         |         |
|          |        |        | Last   | Image   |         |         |
|          |        |        |        | Wave    |         |         |
|          |        |        | In     | p       |         |         |
|          |        |        | cident | atterns |         |         |
|          |        |        | 11     | and     |         |         |
|          |        |        | /18/04 | MIRP    |         |         |
|          |        |        |        | r       |         |         |
|          |        |        |        | ephases |         |         |
|          |        |        |        |         |         |         |
|          |        |        |        | Chan 3B |         |         |
|          |        |        |        | only.   |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **A      |        |        | Opera  | Oper    | O       |         |
| MSU-A1** |        |        | tional | ational | FF/INOP |         |
|          |        |        |        |         |         |         |
|          |        |        | Ch14   | Primary | Since   |         |
|          |        |        | inope  | PLLO    | 1       |         |
|          |        |        | rative | chans   | 0/30/03 |         |
|          |        |        |        | 9-14    |         |         |
|          |        |        | Ch11   | bias    | S       |         |
|          |        |        | inope  | shift.  | urvival |         |
|          |        |        | rative |         | heat    |         |
|          |        |        |        | Backup  | on.     |         |
|          |        |        | Record | PLLO    |         |         |
|          |        |        | low    | inop    |         |         |
|          |        |        | com    |         |         |         |
|          |        |        | ponent | Channel |         |         |
|          |        |        | temps  | 9-14    |         |         |
|          |        |        | re     | noise   |         |         |
|          |        |        | versed | w       |         |         |
|          |        |        | trend  | orsened |         |         |
|          |        |        |        | r       |         |         |
|          |        |        |        | ecently |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **A      |        |        | N      | Nominal | Nominal |         |
| MSU-A2** |        |        | ominal |         |         |         |
|          |        |        |        | Space   |         |         |
|          |        |        |        | Pos     |         |         |
|          |        |        |        | ition-2 |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **       |        |        | Opera  | Oper    | Nominal | R       |
| AMSU-B** |        |        | tional | ational |         | eplaced |
|          |        |        |        |         |         | by MHS  |
|          |        |        | Bias   | Space   |         |         |
|          |        |        | in All | Pos     |         |         |
|          |        |        | Chans. | ition-3 |         |         |
|          |        |        |        |         |         |         |
|          |        |        | Motor  | IPD     |         |         |
|          |        |        | surges | reports |         |         |
|          |        |        | most   | channel |         |         |
|          |        |        | recent | 8       |         |         |
|          |        |        | 11     | degr    |         |         |
|          |        |        | /14/04 | adation |         |         |
|          |        |        |        |         |         |         |
|          |        |        | IPD    |         |         |         |
|          |        |        | R      |         |         |         |
|          |        |        | eports |         |         |         |
|          |        |        | of     |         |         |         |
|          |        |        | de     |         |         |         |
|          |        |        | graded |         |         |         |
|          |        |        | data   |         |         |         |
|          |        |        | on     |         |         |         |
|          |        |        | Chan-3 |         |         |         |
|          |        |        | since  |         |         |         |
|          |        |        | 4/30   |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| ### HIRS | ON /   | N      | IN     | D       | NOMINAL | ####    |
|          | INOP   | OMINAL | PROVED | EGRADED |         | #### HI |
|          |        |        |        |         | 1 Pixel | RS-4 re |
|          | Turned | Opera  | Up     | L       | cross   | placing |
|          | on     | tional | graded | ongwave | track   |  HIRS-3 |
|          | 8      |        | to     | channel | misal   |         |
|          | /30/04 | Occa   | Yellow | imagery | ignment |         |
|          |        | sional | status | i       | .       |         |
|          | For    | loss   |        | mproved |         |         |
|          | power  | of     | 16 May | radi    |         |         |
|          | b      | Fwheel | 05     | ometric |         |         |
|          | alance | synch  |        | noise   |         |         |
|          |        |        | FW     | level   |         |         |
|          | Filter |        | Abrupt | is      |         |         |
|          | Wheel  |        | return | still   |         |         |
|          | turned |        | to     | high    |         |         |
|          | OFF    |        | nomial |         |         |         |
|          | 10/    |        | at     | TOAR    |         |         |
|          | 17/02. |        | 09:00Z | 441     |         |         |
|          |        |        |        | su      |         |         |
|          |        |        | TOAR   | bmitted |         |         |
|          |        |        | 445    | 11      |         |         |
|          |        |        | sub    | Jan05   |         |         |
|          |        |        | mitted |         |         |         |
|          |        |        |        | *       |         |         |
|          |        |        | FW     | **[Cons |         |         |
|          |        |        | m      | idering |         |         |
|          |        |        | ode=Hi | high    |         |         |
|          |        |        | Powr   | power   |         |         |
|          |        |        |        | mode]{  |         |         |
|          |        |        | FW     | .underl |         |         |
|          |        |        | Heater | ine}*** |         |         |
|          |        |        | OFF    |         |         |         |
|          |        |        |        | Occ     |         |         |
|          |        |        | Fr     | asional |         |         |
|          |        |        | equent | major   |         |         |
|          |        |        | Filter | FM      |         |         |
|          |        |        |        | surges, |         |         |
|          |        |        | Exces  | most    |         |         |
|          |        |        | sively | recent  |         |         |
|          |        |        | high   |         |         |         |
|          |        |        | FM     | 12/9/04 |         |         |
|          |        |        | temps  |         |         |         |
|          |        |        | and    |         |         |         |
|          |        |        | cu     |         |         |         |
|          |        |        | rrents |         |         |         |
|          |        |        | co     |         |         |         |
|          |        |        | ntinue |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| ###      |        |        |        |         |         | R       |
|  MHS/MIU |        |        |        |         |         | eplaces |
|          |        |        |        |         |         | AMSUB   |
+----------+--------+--------+--------+---------+---------+---------+
| **MSU**  | ON /   | Opera  |        |         |         |         |
|          | INOP   | tional |        |         |         |         |
|          |        |        |        |         |         |         |
|          | On For | Scan   |        |         |         |         |
|          | power  | motor  |        |         |         |         |
|          | b      | and    |        |         |         |         |
|          | alance | a      |        |         |         |         |
|          | Scan   | ntenna |        |         |         |         |
|          | Motor  | pr     |        |         |         |         |
|          | OFF    | oblems |        |         |         |         |
|          | since  |        |        |         |         |         |
|          | 3      |        |        |         |         |         |
|          | /12/03 |        |        |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **SSU**  |        | N      |        |         |         |         |
|          |        | ominal |        |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **DCS**  | N      | N      | N      | Nominal | Nominal |         |
|          | ominal | ominal | ominal |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **SARR** |        | N      | Opera  | Oper    | Nominal |         |
|          |        | ominal | tional | ational |         |         |
|          |        |        |        |         | A-side  |         |
|          |        |        | A      | S       |         |         |
|          |        |        | -Side, | witched | All AGC |         |
|          |        |        | AGC    | back to | Mode    |         |
|          |        |        | Mode   | mode AA |         |         |
|          |        |        |        |         |         |         |
|          |        |        | Interm | 26Apr05 |         |         |
|          |        |        | ittent | 14:10Z  |         |         |
|          |        |        | fa     |         |         |         |
|          |        |        | ilures | A-side, |         |         |
|          |        |        | for    | AGC     |         |         |
|          |        |        | 243MHz | Mode    |         |         |
|          |        |        | A&B    |         |         |         |
|          |        |        |        | (B-side |         |         |
|          |        |        |        | in FG   |         |         |
|          |        |        |        | mode)   |         |         |
|          |        |        |        |         |         |         |
|          |        |        |        | 243 MHz |         |         |
|          |        |        |        | = INOP. |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **SARP** |        | OFF    | N      | Nominal | Nominal |         |
|          |        |        | ominal |         |         |         |
|          |        | Power  |        | RCVR    |         |         |
|          |        | F      | RCVR   | B/W = 2 |         |         |
|          |        | ailure | B/W =  |         |         |         |
|          |        |        | 2      |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **SEM**  | ON/N   | Opera  | N      | Nominal | Nominal |         |
|          | ominal | tional | ominal |         |         |         |
|          |        |        |        | E-CDEM  | E-CDEM  |         |
|          | Turned | El     | E      | -HVPS=5 | -HVPS=2 |         |
|          | on     | ec-CH- | -CDEM- |         |         |         |
|          | 8      | HVPS=0 | HVPS=2 | P-CDEM  | P-CDEM  |         |
|          | /30/04 |        |        | -HVPS=4 | -HVPS=3 |         |
|          |        | Pr     | P      |         |         |         |
|          | El     | ot-CH- | -CDEM- |         |         |         |
|          | ec-CH- | HVPS=0 | HVPS=0 |         |         |         |
|          | HVPS=4 |        |        |         |         |         |
|          |        | 1 of 4 |        |         |         |         |
|          | Pr     | Tele   |        |         |         |         |
|          | ot-CH- | scopes |        |         |         |         |
|          | HVPS=0 | inope  |        |         |         |         |
|          |        | rative |        |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **SBUV** |        | De     |        | Oper    | Nominal |         |
|          |        | graded |        | ational |         |         |
|          |        |        |        |         | Anode   |         |
|          |        | Grate  |        | D       | Mode    |         |
|          |        | motor  |        | egraded |         |         |
|          |        | sticks |        | Ozone   | Plan    |         |
|          |        |        |        | data    | sweep   |         |
|          |        | Flex   |        |         | mode    |         |
|          |        | memory |        | Backup  | S       |         |
|          |        | 3      |        | D       | tandard |         |
|          |        | (giant |        | iffuser | Ops     |         |
|          |        | step)  |        | inop    | Pr      |         |
|          |        | ops    |        |         | ocedure |         |
|          |        | sus    |        | Primary | change  |         |
|          |        | pended |        | D       |         |         |
|          |        | 1      |        | iffuser | s       |         |
|          |        | 2/2/03 |        | dep     | tarting |         |
|          |        |        |        | loyment | 17 May  |         |
|          |        | R      |        | problem |         |         |
|          |        | educed |        | TOAR    |         |         |
|          |        | oper   |        | 426     |         |         |
|          |        | ations |        |         |         |         |
|          |        |        |        | AMSU    |         |         |
|          |        |        |        | EMI     |         |         |
|          |        |        |        | causing |         |         |
|          |        |        |        | erratic |         |         |
|          |        |        |        | B       |         |         |
|          |        |        |        | ehavior |         |         |
|          |        |        |        | in PMT  |         |         |
|          |        |        |        | cathod, |         |         |
|          |        |        |        | range 3 |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **       |        |        | N/A    | ON      | ON      |         |
| SADPOS** |        |        |        |         |         |         |
|          |        |        |        | Enabled | ENABLED |         |
|          |        |        |        | MFa     |         |         |
|          |        |        |        | ctor50% | Timer   |         |
|          |        |        |        |         | changed |         |
|          |        |        |        | Timer   | to 12   |         |
|          |        |        |        | changed | (from 8 |         |
|          |        |        |        | to 12   | mins 5  |         |
|          |        |        |        | (from 8 | Apr     |         |
|          |        |        |        | mins 5  |         |         |
|          |        |        |        | Apr     |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **T      | N      | N      | TCE26  | Nominal | TCE3H   |         |
| HERMAL** | ominal | ominal | & 15H  |         | Batt 2A |         |
|          |        |        |        | TCE24   | heater  |         |
| Heaters, | TCE's  |        | Telem  | OFF     | failed  |         |
| louvers  | back   |        | i      | 4/14    | ON,     |         |
|          | to     |        | nvalid | (AVHRR  | turned  |         |
| TCE's    | n      |        |        | H&L)    | off     |         |
|          | ominal |        | TOAR   |         | 8/26/03 |         |
|          | c      |        | 432    | HIRS    | TOAR    |         |
|          | onfigu |        |        | Filter  | 428     |         |
|          | ration |        | HIRS   | heater  |         |         |
|          | fol    |        | FW     | turned  | CLOSED  |         |
|          | lowing |        | Heat   | OFF     | 9/14/04 |         |
|          | 7      |        | tuned  | 1/18/05 | no      |         |
|          | /25/04 |        | ON 17  |         | cor     |         |
|          | U      |        | Apr    |         | rective |         |
|          | Vtrip. |        | and    |         | action  |         |
|          |        |        | OFF on |         | po      |         |
|          |        |        | 18 Apr |         | ssible. |         |
|          |        |        |        |         |         |         |
|          |        |        | TCE2   |         | AMSU-A1 |         |
|          |        |        | 4L&25L |         | s       |         |
|          |        |        | (HIRS  |         | urvival |         |
|          |        |        | &      |         | heaters |         |
|          |        |        | AVHRR) |         | on      |         |
|          |        |        | failed |         | 1       |         |
|          |        |        | 5      |         | 0/29/03 |         |
|          |        |        | /13/98 |         |         |         |
|          |        |        |        |         |         |         |
|          |        |        | RCE    |         |         |         |
|          |        |        | ther   |         |         |         |
|          |        |        | mostat |         |         |         |
|          |        |        | failed |         |         |         |
|          |        |        | 5      |         |         |         |
|          |        |        | /13/98 |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
|          | *      | *      | *      | **N16** | **N17** | ### N   |
|          | *N12** | *N14** | *N15** |         |         | OAA-N18 |
+----------+--------+--------+--------+---------+---------+---------+

**COMMENTS/CHANGES:**

NOAA-12 There were no changes on N12 during the past reporting period.

NOAA-14: Spacecraft is operating nominally and power subsystem remains
stable and above safe state threshold values as the

long slow increase in percentage darkness time per orbit continues
through mid-June 05 (illustration 1). Otherwise there were no changes to
N14 during the past reporting period.

NOAA-15: At 07:21z on 16 May, the N15 HIRS experienced a 1.5 degree
[jump]{.underline} in filter motor temperature which was almost
immediately followed by an abrupt drop in filter motor current of over
half an amp and a rapid decline in filter motor temperature as well.
Within an hour and a half of this event, the HIRS filter motor current
had fallen even more significantly and returned all the way back to its
nominal value of approximately 240 mAmps (earlier in the day it had been
almost 400), while filter motor temperature continued a steady decline,
also reaching its nominal value of approximately 22 degrees C (it had
been almost 34 earlier in the day) by days end. In addition, during this
same time frame, the HIRS period monitor returned to nominal, the filter
wheel synch locked back up for the first time in a month and imagery
cleared up completely. EMOSS engineers hypothesize that the initial jump
in filter motor temp followed by the rapid decline immediately
thereafter might have been an indicator that the filter wheel had
possibly broken through the obstruction which had originally caused it
to become anomalous in mid-April 05. In response NOAA upgraded the HIRS
(and its filter wheel component) Status to YELLOW. As of the publication
of this report, it remains operational and nominal (see illustrations
2-8).

EMOSS engineers analyzed other subsystems to gauge their response to the
significant change in N15's HIRS temperatures and currents. The AVHRR
appears to have slowed and even reversed a thermal uptrend at about the
same time the HIRS was making its improvement (illustration 9). However,
this change may also be attributed to the N15 eclipse season which
started at almost the same time that the HIRS situation began. This same
situation may apply to the AMSU-B scan motor temp which also reversed an
upward thermal trend on the day HIRS improved (and eclipse season
began). However, the AMSU-B scan motor current has been showing a
tendency to operate in a slightly more erratic manner than is preferred
although it remains within generally nominal ranges (illustration 10).
The N15 AMSU-A1 and A2 payloads remained operating nominally throughout
the past reporting period and showed little to no response to the HIRS
situation (illustration 11).

As was stated previously, the N15 eclipse season started on 16 May, at
almost the same time that the HIRS was improving (coincidence?) Analysis
of the EPS shows a natural progression into this new environment and no
obvious response to the HIRS improvement event (although bus current did
increase, perhaps due to eclipse onset, perhaps due to changes in HIRS
health profile, perhaps a bit of both.) See illustrations 12 and 13.

The RF conflict between N12 and N15 ended on 16 May. In response, VTX-1
on N15 was commanded back on and appears to be operating nominally
(illustration 14). N15 APT data is once again was transmitting after a 1
month absence.

NOAA-16: The N16 AVHRR scan motor current remained generally stable at
less than optimum levels during the past week while

synch delta value continued to exhibit behavior that probably (but not
confirmed with imagery) has resulted in a number of MIRP rephases in the
past week. In addition, much of the HRPT imagery analyzed by EMOSS
engineers was showing wave patterns in recent days although none had any
indications of bar codes. On the positive side the AVHRR scan motor and
baseplate temps have remained nominal and stable even though the AVHRR
TCE remains powered off. (See illustrations 15-16.)

According to AMSU products personnel (Florence Rabier) monitoring
statistics have recently been showing an "alarming increase" in noise
for channels 9 and 10 of the NOAA16 AMSU-A instrument. This would not be
the first time such problems have occurred on this payload, especially
for these channels. EMOSS analysis of AMSU-A1 health telemetry shows no
problems or concerns whatsoever at any time that coincides with this
degraded imagery (illustration 17). AMSU products personnel have
highlighted some of the problems which can be reviewed in this report in
illustration 18. This payload is already considered YELLOW in status
because of these past data problems and other component failures
(notable the PLLO).

The N16 HIRS was nominal and stable last week (illustration 19) as was
the ADACS subsystem.

NOAA-17: The N17 AVHRR scan motor current and temps were both very
stable during the past week as was synch delta and

and imagery remained nominal (illustrations 20). The N17 HIRS was also
generally stable during the past week although its period monitor
appeared to be slightly less stable than the week before and the filter
motor current is just slightly less stable than would be preferred
(illustration 21). On the other hand HIRS temperatures remain nominal
and stable and there are no reports of any problems with imagery.

At the request of the Polar Program Office EMOSS is overseeing a change
in the N17 SBUV standard operating procedure which is scheduled to begin
today, 17 May 05. The NOAA-17 SBUV currently spends 14 orbits in sweep
mode every Tuesday. This will be reduced to 4 orbits in sweep mode.
These orbits should not cross over the CONUS,

N17 (cont)

or at least not do so in daylight. The SOMS procedure SBSWMODE will be
run every Tuesday and the wait time in this procedure must be changed to
24240 seconds. These schedule changes are intended to be permanent.

NOAA-N: EMOSS is a go. Launch slipped on 11 May due to high winds at
VAFB, it slipped on 12 May because of ground

equipment problems (water pumps) and it slipped on 13 May because of a
possible kerosene vapor leak into the spacecraft faring. As of this
report being generated, the launch is scheduled for 20 May pending
assessment of possible contamination of the spacecraft due to the
kerosene leak.

![](media/image1.png){width="8.125in" height="6.26875in"}

Illustration 1: N14 EPS Analysis:

(Stable and nominal)

![](media/image2.png){width="8.375in" height="6.445138888888889in"}

Illustration 2: N15 HIRS Health Analysis

(An abrupt return to nominal.)

![](media/image3.png){width="8.25in" height="6.204861111111111in"}

Illustration 3: N15 HIRS Recovery Analysis (a closer look)

(Note the surge in the temperature, top graph, followed by a rapid
improvement in the current and temperature. Perhaps, the temp surge was
the result of the filter wheel breaking through some obstruction.)

![](media/image4.png){width="8.25in" height="6.257638888888889in"}

Illustration 4: N15 HIRS Recovery Analysis (cont)

(It took nearly an hour and 20 minutes for the improvement in filter
motor current to be reflected in Filter wheel synch and period monitor
improvement. But once it happened, it was sustained.)

![](media/image5.png){width="7.875in" height="6.133333333333334in"}

Illustration 5: N15 HIRS Recovery Analysis (Imagery Comparison)

(On the right is the first image following the period monitor recovery.
Imagery remains nominal as of this reports distribution.)

![](media/image6.png){width="8.25in" height="6.348611111111111in"}

Illustration 6: N15 HIRS Component Analysis

(A noticeable change in thermal profile is apparent from the time the
scan motor improvement occurred, depicted on the above graphs as an "X".
HIRS Heaters are all off.)

![](media/image7.png){width="8.125in" height="6.111111111111111in"}

Illustration 7: N15 HIRS Analysis in perspective

(Depicting what is obviously the most significant and abrupt HIRS
anomaly and recovery since at least 2001 began.)

![](media/image8.png){width="8.125in" height="6.111111111111111in"}

Illustration 8: N15 HIRS Analysis in perspective (cont)

(Reinforcing the conclusion stated on the previous page.)

![](media/image9.png){width="8.5in" height="6.319444444444445in"}

Illustration 9: N15 AVHRR Health

(Looking for HIRS influences on the AVHRR. Possible some minor thermal
improvement occurred on this AVHRR following the HIRS improvement,
marked as "X" on the graphs. Scan motor current improvement occurred
well before the HIRS filter wheel current improvement occurred.

![](media/image10.png){width="8.25in" height="6.321527777777778in"}

Illustration 10: N15 AMSU-B Analysis (Long and recent term)

(AMSU-B scan motor appears to be performing with a little less stability
than desired although it is within historical "nominal" values. The scan
motor temp appears to have been slightly influenced by the HIRS filter
wheel improvement.)

![](media/image11.png){width="8.25in" height="6.322222222222222in"}

Illustration 11: N15 AMSU-A1 & 2 Health Analysis

(Appear to be nominal and stable and not influenced by HIRS improvement
in any way.)

![](media/image12.png){width="8.375in" height="6.298611111111111in"}

Illustration 12: N15 Eclipse Season Onset

(Coincided with the HIRS improvement event depicted as "X" above)

![](media/image13.png){width="8.25in" height="6.321527777777778in"}

Illustration 13: N15, the Onset of Eclipse Season (cont)

(So far a nominal progression)

![](media/image14.png){width="8.125in" height="6.111111111111111in"}

Illustration 14: N15 VTX-1 Turnon Analysis

(Nominal, APT once again flows to the users.)

![](media/image15.png){width="8.25in" height="6.204861111111111in"}

Illustration 15: N16 AVHRR Analysis

(Stable at higher levels, not necessarily nominal but it has been much
worse also.)

![](media/image16.png){width="7.875in" height="3.2444444444444445in"}

![](media/image17.png){width="7.25in" height="5.468055555555556in"}

Illustration 16: N16 AVHRR Imagery & Synch Delta Analysis

(Synch delta trend is not favorable and, although they are occurring, no
MIRP rephases are apparent in recent GAC imagery because of timing. They
ARE occurring.)

![](media/image18.png){width="8.25in" height="6.365277777777778in"}

Illustration 17: N16 AMSU-A1 Health Analysis

(As nominal and stable as it has ever been. Nothing here to explain the
degradation in products being experienced by products personnel.)

![](media/image19.png){width="8.125in" height="5.843055555555556in"}

Illustration 18: N16 AMSU-A1 Products Analysis

(as outlined by Michael Chalfant)

![](media/image20.png){width="8.25in" height="6.325694444444444in"}

Illustration 19: N17 HIRS Analysis

(Generally stable and nominal)

![](media/image21.png){width="8.25in" height="6.0256944444444445in"}

Illustration 20: N17 AVHRR Analysis

(stable and nominal)

![](media/image22.png){width="8.25in" height="6.0256944444444445in"}

Illustration 21: N17 HIRS Health Analysis

(Slightly less stable on the filter wheel current than is typical but
otherwise nominal.)

# N17 MEMORY SCRUB REPORT

# Last week 

![](media/image23.png){width="7.436111111111111in"
height="1.9652777777777777in"}

# POLAR SPACECRAFT TIP CLOCK ERROR

## WEEK ENDING May 13, 2005

  ------------ ----------- ----------- ----------- ----------- -----------
  DAY/DATE     NOAA-12     NOAA-14     NOAA-15     NOAA-16     NOAA-17

  FRI. 05/06   N/A         +178 msec   -160 msec   +089 msec   +037 msec

  SAT. 05/07   N/A         +178 msec   -161 msec   +088 msec   +037 msec

  SUN. 05/08   -721 msec   +183 msec   -161 msec   +089 msec   +038 msec

  MON. 05/09   -720 msec   +183 msec   -162 msec   +089 msec   +038 msec

  TUE. 05/10   -727 msec   +183 msec   -163 msec   +090 msec   +040 msec

  WED. 05/11   N/A         +178 msec   -164 msec   +089 msec   +040 msec

  THU. 05/12   N/A         +180 msec   -165 msec   +090 msec   +040 msec
  ------------ ----------- ----------- ----------- ----------- -----------

EMOSS POC for this chart is JIM SHEPHERD

NOAA-12 \*Alternating +/- 500 millisecond clock jumps will occur at
76-day intervals as long as fractional second daily ETCUP is utilized to
manage clock drift..

> Daily ETCUP bias of +6.5 mSec started on 12/10/03.

NOAA-14: As of 1223/03 the TIP clock is corrected daily by --7.0 msec to
compensate for drift.

Subtracted 150 mSecs on 30 June

NOAA-15: As of 04/23/03 the TIP clock is corrected daily by --8 msec to
compensate for drift.

Added 100 msec to spacecraft command clock on 31 Aug 04

NOAA-16: As of 12/23/03 the TIP clock is corrected daily by --5.5 msec
to compensate for drift.

Subtracted 100 msec from spacecraft command clock on 31 Aug 04.

NOAA-17: As of 12/23/03 the TIP clock is corrected daily by --3 msec to
compensate for drift.

Added 125 Msecs3 Feb 04.

![](media/image24.png){width="7.624305555555556in"
height="3.8652777777777776in"}

EMOSS ON CONSOLE SCHEDULE FOR 20 MAY LAUNCH OF N18

POES Engineering Contact List

[Government]{.underline}

Renee Smith-Dearing NOAA POES Constellation Lead 301-817-4117

Dong Han: NOAA, POES Payloads 301-817-4127

Micky Fitzmaurice: NOAA, POES Bus, IJPS 301-817-4016

Nicolaie Todirita (Todi): NOAA Ground Systems 301-817-4229

[EMOSS-2 Contractor]{.underline}

Jeff Devine: EMOSS POES Lead 301-817-4020

Jim Walters: EMOSS, POES Payload Engineer 301-817-4033

Angelique Riley, EMOSS, POES Comm and DHS 301-817-4028

Carl Gliniak, EMOSS POES Power and Thermal 301-817-4207

Jim Sheperd, EMOSS POES Attitude Control 301-817-4030

Jon Woodward EMOSS, POES Flight Software C&CS 301-817-4019

Sally House EMOSS POES Payloads 301-817-4026

William Chadwick EMOSS, POES Comm and DHS 301-817-4015