======De-Orbit Checklist======
<note Important> **Checklists will look best at a screen resolution of 1280*1024 and above** \\ if you are using lower resolution you might see misaligned text \\ **please** Do not try and "fix it"</note>

^  COMM  ^  MET  ^  Panel Section  ^  Panel  ^  Procedure  ^  Notes  |
^  1000  |  Mission Dep.  |  Left  |  L1  | * Set RAD CONTROLLER - OUT TEMP To HIGH  \\ * Set RAD CONTROLLER (LOOP 1 & LOOP 2) To OFF  \\ * Set RAD CONTROLLER - BYPASS MODE (1 & 2) To MAN  \\ * Confirm RAD FLOW BYPASS VALVE Talkbacks Display (BYP)  \\ * Confirm The HI LOAD EVAP ENABLE Is Set To OFF  \\ * Set FLASH EVAP CONTROLLER (PRI A & PRI B) To ON  \\ * Set FLASH EVAP CONTROLLER - SEC To ON  | Trap Cold Freon In The Bay Radiators If The Rad \\ Bypass Valve Talkbacks Do Not Display (BYP), \\ Set The Manual Rad Flow Bypass Switches 1 & 2 To Bypass.  |
^ ^^^^^^
^  1001  |  Mission Dep.  |  Right Aft  \\  \\  \\  Aft Left  \\  Right Aft  |  R11L  \\  \\  \\  A1U  \\  R13L  \\  \\ R11L  | * Confirm The MAJ FUNC Switch Is Set To GNC  \\ * Enter [[ops2#spec_33|SPEC 33 PRO]] (**AFT Keypad**)  \\ * Enter ITEM 2 EXEC (**AFT Keypad**)  \\ * Set KU BAND POWER To OFF  \\ * Set KU Antenna To STOW  \\ * When Talkback Shows STO, Set KU Antenna To GND  \\ * Enter [[ops2#spec_22|SPEC 22 PRO]] (**Aft Keypad**)  \\ * Enter ITEM 9 EXEC (**Aft Keypad**)  \\ * Enter ITEM 10 EXEC (**Aft Keypad**)  | Deactivate & Stow The KU Antenna  \\  \\  \\ If Rendezvous Navigation Has Been Used It Must Be Disabled.  \\ To Disable Enter: ITEM 1 EXEC On The AFT Keypad.  |
^ ^^^^^^
^  1002  |  Mission Dep.  |  Right Aft  |  R13L  | * Set PL BAY MECH PWR (SYS 1 & SYS 2) To ON  \\ * Set RADIATOR CONTROL (SYS A & SYS B) To STOW  \\ * Set LATCH CONTROL (SYS A & SYS B) To LATCH  \\ * Set LATCH CONTROL (SYS A & SYS B) To OFF \\ * Set RADIATOR CONTROL (SYS A & SYS B) To OFF \\ * Set PL BAY MECH PWR (SYS 1 & SYS 2) To OFF  | Stow The Radiators \\ Wait Until The RADIATOR CONTROL Talkbacks Show STO \\ Before Setting The LATCH CONTROLS SYS 1 & SYS 2 To LATCH. \\ Wait Until Latch Control Talkbacks Show LAT Before \\ Turning Off ALL Radiators. |
^ ^^^^^^
^  1003  |  Mission Dep.  |  Overhead Left  \\  Center  \\  Right  |  O6  \\  C3  \\ \\ R2  | * Set GENERAL PURPOSE COMPUTER - MODE 5 To STBY  \\ * Set The BFC/CRT - Display To ON  \\ * Confirm The BFC/CRT SELECT Is Set To (3+1)  \\ * Confirm BOILER CNTLR/HTR Switches (1/2/3) Are ON  \\ * Set HYD CIRC PUMP Switches (1/2/3) To OFF  | Activate Backup Flight System  |
^ ^^^^^^
^  1004  |  Mission Dep.  |  Overhead Aft \\ \\ \\ \\  Right Aft  |  O14 \\ O15 \\ O16  \\  \\  O15  \\  R11L  | * Set RGA 1 To ON \\ * Set RGA (2 & 4) To ON \\ * Set RGA 3 To ON  \\ * Set ACCEL 3 To ON  \\ * Set ACCEL 4 To ON  \\ * Set SUPPLY H2O - Crossover Valve To OPEN  | Gyro Assemblies & Accelerators  |
^ ^^^^^^
^  1006  |  Mission Dep.  |  Right Aft  |  R11L \\ \\ \\ \\ R13L \\ \\ \\ \\ R11L  | * If Required, Enter [[ops2#ops2021|OPS 202 PRO]] **(AFT Keypad)** \\ * Set MAJ FUNC Switch To SM \\ * Enter ITEM 1 EXEC **(AFT Keypad)** \\ * If Not Already Enabled, Enter ITEM 3 EXEC **(AFT Keypad)** \\ * Set PL BAY DOOR (SYS 1 & SYS 2) To ENABLE \\ * Set PL BAY DOOR To CLOSE \\ * Set PL BAY DOOR To STOP \\ * Set PL BAY DOOR (SYS 1 & SYS 2) To DISABLE \\ * Enter ITEM 2 EXEC **(AFT Keypad)**  | Close Payload Bay Doors \\ \\ \\ \\ \\ \\ \\ \\ Wait Until The PL BAY DOOR Talkback Shows CL. |
^ ^^^^^^
^  1008  |  Mission Dep.  |  Right Aft \\ \\ \\ \\ Overhead Left \\ Right Aft  |  R11L \\ \\ \\ \\ O6 \\ R11L  | * Set MAJ FUNC To GNC \\ * Press GPC/CRT **(AFT Keypad)** \\ * Enter 4 EXEC **(AFT Keypad)** \\ * Enter [[ops2#ops201|OPS 201 PRO]] **(AFT Keypad)** \\ * Set GENERAL PURPOSE COMPUTER - MODE 3 To RUN \\ * Enter [[ops3#ops301|OPS 301 PRO]] **(AFT Keypad)**  | Reconfigure GNC’s For Deorbit  |
^ ^^^^^^
^  1009  |  Mission Dep.  |  Overhead Left  |  O6  | * Set STAR TRACKER DOOR CONTROL (SYS 1 & SYS 2) to CLOSE \\ * Set STAR TRACKER DOOR CONTROL (SYS 1 & SYS 2) to OFF \\ * Set STAR TRACKER POWER (-Y & -Z) to OFF  | Close Star Tracker Doors \\ Wait Until STAR TRACKER DOOR POSITION Talkback Shows CL.  |
^ ^^^^^^
^  1010  |  Mission Dep.  |  Right \\ Overhead Aft \\ \\ \\ Center \\ \\ Left \\ \\ \\ \\ \\  \\ \\ \\ \\ \\ \\ Aft Left  |  R4 \\ O15 \\ O14 \\ O16 \\ C3 \\ \\ L2 \\ \\ \\ L1 \\ \\ L2 \\ \\ \\ \\ \\ \\ A12  | * Check HYDRAULICS BRAKE HEATER (A/B/C) Set To AUTO \\ * Set BRAKES MN B To ON \\ * Set BRAKES MN A To ON \\ * Set BRAKES MN C To ON \\ * ORBITAL DAP / MANUAL MODE / ROTATION - ROLL To PRI \\ * Check ORBITAL DAP / CONTROL To AUTO \\ * Confirm ANTI SKID - Set To ON \\ * Confirm NOSE WHEEL STEERING - Set To 1 \\ * Confirm ENTRY MODE - Set To AUTO \\ * Set FLASH EVAP CONTROLLER (PRI A & PRI B) To GPC \\ * Set FLASH EVAP CONTROLLER SEC To GPC \\ * FREON LOOP ISOLATION - MODE To OFF \\ * Set O2 SYS 2 SUPPLY To OPEN \\ * Set N2 SYS 2 SUPPLY To OPEN \\ * Set N2 SYS 2 REG INLET To OPEN \\ * Set O2/N2 CNTLR VLV SYS 1 To OPEN \\ * Set APU HEATER - GAS GEN/FUEL PUMP (1/2/3) To OFF \\ * Set APU HEATER - LUBE OIL LINE (1/2/3) To OFF \\ * Set All TANK/FUEL LINE/H2O SYS Switches To OFF \\ * HYDRAULIC HEATER - RUDDER SPD BRK (A &B) To OFF \\ * HYDRAULIC HEATER - BODY FLAP (A & B) To OFF \\ * HYDRAULIC HEATER - ELEVON (A & B) To OFF \\ * HYDRAULIC HEATER - AFT FUSELAGE (A & B) To OFF  | Final Switch Configuration Check  |
^ ^^^^^^
^  1012  |  Mission Dep.  |  Right  |  R2  | * Set He ISOLATION A LEFT/CENTER/RIGHT To OPEN \\ * Set He ISOLATION B LEFT/CENTER/RIGHT To OPEN \\ * Set PNEUMATICS L ENG He XOVR To OPEN \\ * Set PNEUMATICS He ISOL To OPEN \\ * Set LEFT He INTERCONNECT To - IN OPEN \\ * Set CENTER & RIGHT INTERCONNECT To - OUT OPEN  | Main Propulsion System / Helium Release  |
^ ^^^^^^
^  1013  |  Mission Dep.  |  Right Aft  |  R11L  | * Confirm MAJ FUNC Set To GNC \\ * Enter [[ops2#spec_21|SPEC 21 PRO]] **(AFT Keypad)** \\ * Enter ITEM 16 EXEC  | Final IMU Alignment  |
^ ^^^^^^
^  1014  |  Mission Dep.  |  Center \\ Right \\ \\ \\ \\ \\  \\ \\ \\ \\ Center  |  C2 \\ R2 \\ \\ \\ \\ \\ \\ \\ \\ \\ C2  | * Enter ITEM 34 EXEC **(Right Keypad)** \\ * Set BOILER N2 SUPPLY (1/2/3) To ON \\ * Set BOILER PWR (1/2/3) To ON \\ * Set APU FUEL TK VLV (1/2/3) To OPEN \\ * Set APU CNTLR PWR (1/2/3) To ON \\ * Confirm APU AUTO SHUT DOWN (1/2/3) Set To INHIBIT \\ * Confirm HYD MAIN PUMP PRESS (1/2/3) Set To LOW \\ * Confirm APU SPEED SELECT Set To NORM \\ * Confirm APU/HYD Ready To Start Talkbacks Are GREY \\ * Confirm GIMBAL CK 34 On CRT 2 Is Complete \\ * Enter [[ops3#ops302|OPS 302 PRO]] **(Right Keypad)**  | Perform OMS Gimbal \\ \\ \\ \\ \\ \\ \\ \\ If there's an asterisk next to GMBL CK 34 \\ It means the gimbal check is incomplete. \\ You must wait for the asterisk to Disappear.  |
^ ^^^^^^
^  1015  |  Mission Dep.  |  Center  |  C2  | * Confirm (CRT 1, CRT 3, CRT 2) Are Set To MAJ FUNC GNC \\ * [[ops3#spec_50|Enter SPEC 50 PRO]] **(Left Keypad)** \\ * Enter [[ops3#spec_51|SPEC 51 PRO]] **(Right Keypad)** \\ * Enter ITEM 44 EXEC **(Right Keypad)** | Horizontal Situation & Override Displays  |
^ ^^^^^^
^  1016  |  Mission Dep.  |  Center \\ Right  |  C2  \\ R2  | * Press RESUME **(Right Keypad)** \\ * Set APU OPERATE - START/RUN For APU 1  |  |
^ ^^^^^^
^  1017  |  Mission Dep.  |  Center \\ \\ \\ Overhead Aft \\ \\ Center  |  F7  \\ C2 \\ \\ \\ O14 \\ O16 \\ C3 \\ C2  | * Check CRT 1 Confirm Display Of OPS MODE 3021 \\ * ITEM 22 EXEC **(Right Keypad)** \\ * ITEM 27 EXEC **(Right Keypad)** \\ * ITEM 23 EXEC (Right Keypad) \\ * Confirm L OMS ENG VLV Is ON \\ * Confirm R OMS ENG VLV Is ON \\ * Set OMS ENG (LEFT & RIGHT) To ARM/PRESS \\ * Press EXEC - **(Right Keypad)** Confirms ready for OMS burn  | Perform Deorbit Burn  |
^ ^^^^^^
^  1018  |  Mission Dep.  |  Center \\ Overhead Aft  |  C3 \\ O14  \\ O16  | * Set OMS ENG (LEFT & RIGHT) To OFF \\ * Set L OMS ENG VLV To OFF \\ * Set R OMS ENG VLV To OFF  | Deorbit Burn Complete  |
^ ^^^^^^
^  1020  |  Mission Dep.  |  Center \\ Front  |  C2 \\ F6  | * Enter [[ops3#ops303|OPS 303 PRO]] **(Right Keypad)** \\ * Position The Shuttle To The Correct Attitude  | __Correct Attitude Hint__ \\ Pitch The Shuttle To 280 Deg  |
^ ^^^^^^
^  1022  |  Mission Dep.  |  Center  \\  \\ Right  \\ \\ Overhead Aft \\ Right \\ Center  |  C2  \\ \\  R2 \\ \\ O17 \\ R1 \\ C2  | * Enter ITEM 36 EXEC **(Right Keypad)** \\ * Enter ITEM 37 EXEC **(Right Keypad)** \\ * Set APU OPERATE - START/RUN For APU (2 & 3) \\ * Set HYD MAIN PUMP PRESS (1/2/3) To NORM \\ * Set ATVC - (1/2/3/4) To ON \\ * Set AC BUS SNSR (1/2/3) To MONITOR \\ * Enter ITEM 39 EXEC **(Right Keypad)**  | Dump RCS Propellant \\ \\ Pressure Shuold Rise To 3000 PSI  |
^ ^^^^^^
^  1023  |  Mission Dep.  |  Center \\ \\ Overhead Right \\ \\ \\ Center  |  C2 \\ \\  O8  \\  \\  \\ C2  | * Enter ITEM 38 EXEC **(Right Keypad)** \\ * Enter ITEM 40 EXEC **(Right Keypad)** \\ * Set FWD RCS - He PRESS (A & B) To CLOSE \\ * Set TANK ISOLATION (1/2 & 3/4/5) To CLOSE \\ * Set MANIFOLD ISOLATION (1/2/3/4/5) To CLOSE \\ * Enter [[ops3#ops304|OPS 304 PRO]] **(Right Keypad)**  | Wait Until The cycle Completes  |
^ ^^^^^^
^  1024  |  Mission Dep.  |  Front Left \\ Front Right  |  F6  \\  F8  | * Set Commander ATTITUDE INRTL To LVLH  \\ * Set Pilot ATTITUDE INRTL To LVLH  |  |
^ ^^^^^^
^  1025  |  Mission Dep.  |  Front Right Panel  |  F4  | * Check PITCH & ROLL/YAW Set To AUTO  |  |
^ ^^^^^^
^  1026  ^  Mission Dep.  ^  ^  ^  Roll Reversals  ^^

=====Links=====
^  [[basics|Back to basic skills]]  ^^
^Next checklist:  |[[landing-checklist|Landing Checklists]]  |
^  [[missions|Go-To Missions Index]]  ^^


<note>  All the checklists were Originally Created by Michael Swannick, and are available for download in PDF format in the [[http://space-shuttle-mission.com/downloads|SSM site]]. \\ Adapted for Wiki format by Marvx and spaceboy7441  </note>