As 504 Countdown

T-22 THRU T-6 HOURS

SHEET 5 OF 6

CSM ECS SUIT SEPARATION SERVICER LM STOWAGE i CABIN CLOSEOUT^ IM SHe SERVICE PREPSJI IV SYSTEMS CKS^ LV RF i TM CKSA LV POWER TRANSFER TEST' Q-BALL PWR ON CLEAR PERSONNEL FROM SLA S/C AREAl LM SHe TOP OFF SV'EDS' TEST! LM SHe GSE SHUTDOWN I REMOVAL REMOVE IU WATER NOZZLE I [ j LV DRSCS CKS 3 HOUR BUILT-IN HOLDQ CLEAR PERSONNEL FROM ML ZERO LEVEL LM 525 REMOVAL!

major milestones sequential events t-6 thru t-o

H

II

S

EVENT

T

-03

39

00

LV PROPELLANT REPLENISH

T

-02

40

00

START CS« FLIGHT CREI INGRESS

r

-01

55

00

KCC CS« COMMAND CHECKS

T

01

50

00

AAS COMMUNICATION CHECKS

I

-01

46

00

SY EOS TESTS

T

01

45

00

CS» HATCH SECURED

T

-00

42

00

ARM LES

T

00

30

00

LV POWER TRANSFER TEST

T-

00

30

00

1« SWITCH OVER TO INTERNAL POWER

T-

00

20

00

S D L» OPERATIONS INSTRUMENTATION

T

00

05

00

$A 9 FULLY RETRACTED

r-

00

03: or

INITIATE AUTOMATIC SEQUENCER

T-

00

02

00

LM OF 1 XMTR T O

T-

00

00

50

LV ON INTERNAL POWER

T-

00

00

06

IV INITIAL ENGINE IGNITION

T-

00:00

00

LIFTOFF OF APOLLO 9

LV RP-I REPLENISH S-IVB FWO ACCESS PLATFORM REMOVAL (QUAD 3)1

| | | | SLA CLOSEOUT COMPLETE V CLEAR SV EXCEPTW FOR SSA CONNECTIONI

| | CONNECT LV SIA'^ CSM PRE-INGRESS OPERATIONS

PRIMARY' DAMPER' CONNECTED

CSM RF VOICE CKS LV CLOSEOUT COMPLETER 6 HOUR BUILT-IN HOLD O AST' DANGER' AREA CLEARING

LV PROPELLANT LOAD

LM OF I STATUS V FT-47|V

STATUS v I

50 H

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