As 504 Countdown

T—130:30 THRU T-100 HOURS

T-130 128 126 124 122 120 118 ii6 114 112 110 108 106 104 102 100

START COUNTCLOCK CT-130:30:OQ)

CSM TURK ON I SYS VERIF

LM 4 CS» WATER SERY

CSM SEQUENCER RESETV

IN GHe PREPS

MAJOR MILESTONES SEQUENTIAL EVENTS T-100 THRU T—72

T-99:30:00 CSM REMOTE RESISTANCE CHECKS 1-86:00:00 LUCS» GHe/COI SERVICE PREPS T-86:00: 00 LI PROPELLANT VENT LINE CONNECT T-85:30:00 CSI POWER ON T-BC 30:00 L> I CSM 60* t GHe SERVICE I PROPELLANT LINE DISCONNECT

NOTE:

y/m

HAZARDOUS OPERATIONS

CSM GHe SERVICE PREPS |

CLEAR PERSONNEL FROM ML ZERO LEVEL®

CSM HEAVY ORDNANCE mmOMY/////Z,

LM ED BATT INSTALL 4 S4A CW/M/A

LV INSTALL F-l ENGINE ORDNANCE

3 HOUR BUILT-IN HOLdO

CLEAR NON-ESSENT PERSONNEL FROM PAD APRON,MSS,ML, 4 FLAME TRENCH

IV INITIATOR/DETONATOR HOOKUPii^^Ä

AS 504 COUNTDOWN

MOO 99 98 97 96 95 94 93 92 91 90 89 88 B7 86 85 84 83 82 61 80 79 78 77 76 75 74 73 12

CLEAR NON-ESSENTIAL PERSONNEL-BEYOND PERIMETER FENCER

CS* REMOTE RESISTANCE CKSÄ

JUMP COUNTCLOCK*

>CSM REM0T€ RESISTANCE CHS AT TWILL IMHEOI ATELY BE FOLLOWED BY AREA OPENING AT T-8B:30:00 "MTH ULEO DELAY BETWEEN ACTIVITIES.

3 9:30:OD CONTROL NO SCHED-

MAJOR MILESTONES SEQUENTIAL EVENTS T—72 THRU T—37

T-56'45: 00 I» 0RSCS/6SE CLOSED LOOP TEST

T-56:00:00 IV ORSCS/RANGE CLOSED LOOP TEST

T-50'30'00 F-t ENGINE HYPERGOL CARTRIDGE INSTAL

T-50:30: 00 BOOST PROTECTIVE COVER INSTAL

T-45'30'od CS» LH2 GSE HOOKUP PURGE t LEAK CK

T-42"00:00 I» SHe SERVICE

T-42'00:00 CS« FUEL CELL ACTIVATION

T-3BOOOO L« PORTABLE LIFE SUPPORT SYS CKS

CONTROL AREA OPENING |

Mil!

LMl/CSM GHe/GOX SERVICE PREPS CLEAR PERSONNEL FROMSLA S/C AREA

LM PROP VENT LINE CONNECT CSM POWER ON

CLEAR NON-ESSENT PERSONNEL BEYOND PERIMETER FENCE

I CSM GOX i GHe SERVy PROP LINE DISCONNECT"

AS 504 COUNTDOWN

T-72 THRU T-37 HOURS

SHEET 3 OF 6

T-72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54'53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37

LM/CSM GOX & GHe SERV, & PROPELLANT LINE OISCONN

CONTROL AREA CLEARING!

8 HOUR BUILT-IN HOLOQ I Im' COX DISCONNECT! CSM MECH BUILDUP i BAIT HOOKUP LH MECH BUI LOUP

I Q-JBALL PWR ON PNEU SYS EM TEST,

Q-BALL SIM CMO LV DRSCS/C'SE' CLOSED 'LOOP TEST I LV DRSCS'RANGE CLOSED LOOP TEST

LM SHe LOADING PREPS

MAJOR MILESTONES SEQUENTIAL EVENTS T-37 THRU T—22

EVENT

T 36:30:00 CSM L02 i LH2 TANKING T- * CSM LH2 t 102 PRESS ('STARTS 2%

HRS INTO SCHEDULED 5'i HR WORK HOLD) T-28: 00:00 OFFICIAL COUNTDOWN START (AFTER 5'4 HR WORK MHO)

30:00 INSTALL I CONNECT LV BATTERY

30:00 CSM ECS SUIT SEPARATOR SERVICE

30:00 LV SYSTEMS CHECKS

00:00 MCC COMMAND VALIDATION TEST

1500 ATTITUDE COMMAND CHECKS

00:00 LV RF t TM CHECKS

00:00 Q BALL POWER ON

CLEAR PERSONNEL FROM ML ZERO LEVEL I I I I I I I I I I I I F-1 ENG HYPERGOL CARTRIDGE INSTi^

BOOST PROTECT COVER INSTAL!

LV COMPUTER MAINTENANCE CSM LH2 GSE HOOKUP PURGE & LEAK CK

I CIF ANTENNA CALIBRATION CLEAR PERSONNEL FROM SLA S/C AREA

8 HOUR BUILT-IN HOLOQ j I I LM SHe SERVICE ffi/A/M CSM FUEL CELL ACT/ VATI ONfii 'M/ LM PORTABLE LIFE SUPP SYS CKS

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