NASA Flight Engineers Kayla Barron and Raja Chari will conduct the Tuesday, March 15, spacewalk, designated U.S. EVA 79, assembling and installing modification kits required for upcoming solar array upgrades.
1 Pre EVA Configuration3 EGRESS4 ---->EV1 Egress Airlock and Stow Strut Bag on BRT5 ---->EV2 Egress Airlock with CL Bag on BRT6 WORKSITE PREP7 ---->EV1 Translate to S31S4 Interface, inboard of SARJ, GRN Hook to S3 HR 30608 ---->EV1 Translate to 3A [EA non-radiator side, Stow Strut Bag on S4 HRs 2207122069 ---->EV2 Translate to STBD CETA Cart, Stow CL Bag on CETA Cart Square Grid10 ---->EV2 Retrieve WIFEX/APFR from STBD CETA Cart WIF 01, stow on BRT11 ---->EV2 Translate to STBD SARJ, GRN Hook to S3 HR 3061, translate to 3A [EA12 ---->EV2 Install WIFEX in S4 WIF 26 [6,G,5], set APFR to [12, TT, F, 12]13 UPPER TRIANGLE BUILD14 ->AS SEMBLE RIGHT UPPER STRUT TO MOUNTING BRACKET15 ---->EV2 Translate to EV1, install Right Upper Strut L7 to Mounting Bracket using PGT [B3, CW2]16 ->Assemble Left Upper Strut to Center Pad17 ---->EV1 Install Left Upper Strut L2 to Center Pad L2, Drive bolt M17 to torque PGT [B1, CW2]18 ---->EV1 Install Center Pad MLI and Pip-pin19 ->Assemble Left Upper Strut to Mounting Bracket20 ---->EV2 Install Left Upper Strut L8 to Mounting Bracket left side PGT [B3 CW2]21 ---->EV1 Install Mounting Bracket MLI, then Drive M13, M14 to torque with PGT [B3, CW2]22 ---->EV1 EV1 Move PGT w 7116 to Right Upper Strut HR23 CENTER PAD TO MAST CANISTER24 ---->EV2 Translate to and ingress APFR S4 WIF 26, receive Upper Triangle w/ PGT from EV125 ---->EV2 Install Center Pad to Mast Canister, arrow pointing up26 ---->EV1 Stow SHORT PGT on S4 HR 224027 ---->EV2 Transfer LONG PGT from Upper Triangle to EV128 ---->EV2 Verify PIP Pin and MLI for Left/Right Upper Strut is closed29 INSTALL 3A LEFT STRUTS30 ->LEFT LOWER STRUT INSTALL31 ---->EV2 Egress APFR, adjust WIFEX to 1 [6,G,1] and APFR to [12,PP,H,12]32 ---->EV2 Receive Left Mid Strut, stow on BRT, then ingress APFR33 ---->EV2 Receive Left Lower Strut from EV134 ---->EV1 Translate to SABB launch bracket, report spherical bearing alignment35 ---->EV1 Install Left Lower Strut M21 to SABB launch bracket, handstart M21 4 turns36 ---->EV2 Start Left Lower Strut L5 to Mounting Bracket L5 Install using PGT [B1, CW2] on Bolt M2237 ---->EV1 Drive M21 to torque with PGT [B7, CW2], then final torque w/ torque wrench [CW, 60 ft/lbs]38 ---->EV2 Once M21 at torque, drive M22 to torque, PGT [B1, CW2], then stow PGT39 ---->EV2 Install grounding PIP pin to grounding block and install MLI40 ->LEFT MID STRUT INSTALL41 ---->EV1 Translate to mast canister Left Pad Install location42 ---->EV2 Extend Mid Strut, Side Pad toward EV143 ---->EV1 Install Left Side Pad to Mast Canister, arrow pointing up, right side first, then pivot left44 ---->EV1 Start bolts M1-M4, 2 turns LONG PGT [A2, CW2]45 ---->EV2 Install Left Mid Strut to Upper Strut L8 bolt M28 using PGT [B1, CW2] then stow PGT46 ---->EV1 Drive bolts M1-M4 to toque LONG PGT [A2, CW2], then stow PGT47 ---->EV2 Install PIP pin top grounding block48 ---->EV1 Verify Pip-pin and Install MLI over Side Pad49 ---->EV1 Retrieve SHORT PGT from S4 HR 2240, retrieve Torque Wrench from Left Lower Strut HR, tether to PGT50 ---->EV1 Translate to strut bag, stow SHORT PGT and Torque Wrench on Right Lower Strut HR51 INSTALL 3A RIGHT STRUTS, MLI & CLAMPS52 ->RIGHT LOWER STRUT INSTALL53 ---->EV2 Egress APFR and set to [12,PP,C,12]54 ---->EV2 Receive right Mid Strut and Ingress APFR, then receive Right Lower Strut from EV155 ---->EV2 Release L6 grounding PIP Pin from strut stow location56 ---->EV1 Translate to mast canister right side SABB launch bracket, report bearing alignment57 ---->EV1 Install Right Lower Strut M19 to SABB launch bracket, M 19 4 turns58 ---->EV2 Start Right Lower Strut L6 to Mounting Bracket L6, M20 2 turns PGT1 [B1,CW2]59 ---->EV1 Drive M19 to torque with SHORT PGT [B7, CW2], then final torque with torque wrench[CW, 60 ft-lbs]60 ---->EV1 Leave SHORT PGT and Torque Wrench on Right Lower Strut HR61 ---->EV2 Drive bolt M20 to torque PGT [B1, CW2], stow PGT62 ---->EV1 verify MLI covering lower strut pad63 ---->EV2 Install grounding PIP pin to grounding block and install MLI-64 ->RIGHT MID STRUT INSTALL65 ---->EV1 Translate to mast canister Right Side Pad install location66 ---->EV2 Release PIP Pins and Extend Mid Strut, Side Pad toward EV1-67 ---->EV1 Install Right Side Pad to Mast Canister, arrow pointing up68 ---->EV1 Start bolts M9-M12 two turns by hand or with LONG PGT [A2, CW2]69 ---->EV2 Drive M24 to torque PGT [B1, CW2], then stow PGT70 ---->EV1 Drive bolts M9-M12 to torque PGT [A2, CW2]71 ---->EV1 Verify MLI covering side pad clevis72 ---->EV2 Install PIP pin to grounding block73 ->Clamps 8 MLI74 ---->EV1 Verify Pip pin can reach receptacle, do not install75 ---->EV1 Drive adjustment collar bolts M25, M26 to torque with PGT [B7, CW2]76 ---->EV1 PGT to [RCW, 30.5], then drive bolts M25, M26 to torque, reset PGT to MTR77 ---->EV1 Verify middle PIP Pin in final location and close MLI78 ---->EV2 and EV1 Close MLI and Install Wire Ties79 ---->EV2 Egress APFR, Retrieve SHORT PGT and Torque Wrench from Right Lower Strut HR80 ->Left Mid Strut Adjustment Collar81 ---->EV1 Translate to Left Mid Strut Adjustment Collar bolts M29 and M3082 ---->EV1 Verify Pip pin can reach receptacle, do not install83 ---->EV1 Drive bolts M29, M30 to torque with LONG PGT [B7, CW2]84 ---->EV1 PGT to [RCW, 30.5], then drive M29, M30 to torque85 ---->EV1 Release Folded MLI and install middle PIP pin86 ---->EV1 MLI around Collar bolts and mount bracket, install 2 wire ties around midstrut MLI87 ---->EV1 Verify MLI covering side pad clevis88 ->3A MOD KIT CLEANUP89 ---->EV2 Translate to Strut Bag, Stow Short PGT and Torque Wrench and fold the Strut bag90 ---->EV2 Translate to S4 WIF 26, retrieve WIFEX+APFR+AIA to Stow on BRT91 ---->EV1 Photograph Mod-kit showing final MLI config92 ->BCDU MLI TIEBACK93 ---->EV2 Translate to STBD CETA Cart WIF01, Green Hook stays on S3 HR306194 ---->EV1 Translate outboard non radiator side to S6 BCDU95 ---->EV1 Attach Wire Ties to inboard and outboard stanchions of HR 200896 ---->EV1 Translate to Radiator side of BCDU97 ---->EV2 Stow WIFEX, APFR, AIA in WIF 01 [11,A,1] [12, FF, A, 6]98 ---->EV2 Retrieve CL Bag from CETA cart, stow on BRT, then translate to S6 BCDU99 ---->EV2 Temp stow CL Bag on HR 2028100 ---->EV1 Fully open MLI on BCDU 1101 ---->EV1 Translate back to HR 2008, bringing lid along102 ---->EV1 Form lid into triangle, then verify EWIS Antenna clear103 ---->EV1 Attach long end of long wire tie from HR 2008 inboard stanchion104 ---->EV2 Retrieve and Install 6 inch socket to PGT, then retrieve ratchet wrench105 ---->EV2 Position for access to H1 Bolt on Outboard spare BCDU (SN 0026)106 ---->EV1 Open Lid 2, and translate to S6 HR 2008, fold lid to triangle107 ---->EV2 Break Torque on H1 and H2 with Ratchet Wrench, stow wrench on MW S108 ---->EV2 Reset torque on H2, H1 with PGT [A6, CW2]109 ---->EV1 Verify EWIS Antenna clear, then attach outboard stanchion wire tie to lid loop110 ---->EV1 Photograph final configuration of BCDU MLI showing EWIS Antenna111 ---->EV2 Position to access H1 bolt on inboard spare BCDU (SN 0029)112 ---->EV2 Break Torque on H1 and H2 with Ratchet Wrench, stow wrench on MWS113 ---->EV2 Reset torque on H2, H1 with PGT [A6, CW2], stow wrench in CL Bag114 ---->EV2 Stow CL Bag from S6 HR 2028 on BRT115 ---->EV2 Translate to AL, Retrieve Green Hook from S3 HR 3061, Fairlead from HR 3409116 ---->EV1 Retrieve Strut Bag on 3A lEA, stow on BRT117 ---->EV1 Translate to AL, retrieve GRN hook from S3 HR 3060118 ---->EV1 Release CETA Cart brakes x2, then Retrieve fairlead from HR 3410119 ---->EV2 Ingress AL120 ---->EV1 Transfer Strut Bag to EV2 and Ingress AL