Operational medicine
CASE-55-D — Medical Fitness for Extravehicular Activity (EVA)
Authored demonstration. Not a live employer result.
01 · Situation
The screening was ordered. The result was never documented.
Illustrative pre-EVA cardiovascular screening is required before an EVA; the result is never documented before the EVA proceeds.
02 · Evidence
What the record holds.
- E1Screening order, three days before the EVA
Verified · Day −3
- E2Screening result — not located; the illustrative mission protocol requires this confirmation before the EVA
Not located · Due before Day 0
- E3EVA schedule confirmed
Verified · Day 0
- E4EVA conducted as scheduled
Verified · Day 0
03 · Obligations / Owners
The chain of responsibility.
- 01
Flight surgeon (order screening)
- 02
Crew medical officer (document result and confirm fitness before EVA, per the illustrative requirement that confirmation precede the EVA)
04 · Accountability Break
Where the chain broke.
The fitness-confirmation gate was not enforced before the activity proceeded. Whether that gate should have stopped the EVA is exactly what this record puts at issue.
05 · Next Action
The corrective obligation.
Documented fitness confirmation becomes a hard gate — no schedule lock without it.
06 · Economic Boundary
Where the evidence stops.
Not applicable — this is a safety-gate record; no cost dimension is asserted.
07 · Engine Answer
What the Engine can and cannot establish.
The crew medical officer was required, under this demonstration’s illustrative mission protocol, to document a fitness confirmation before the EVA. The record shows the screening was ordered on Day −3, no result is evidenced, and the EVA proceeded on schedule on Day 0. The Engine can demonstrate that the activity proceeded without a documented fitness confirmation the protocol required. It cannot establish why the confirmation was never produced, whether the crew member was in fact fit, or whether proceeding without it was itself a defensible decision — that is precisely what this record puts at issue.
The activity proceeded on schedule. The reviewed record does not contain the confirmation the protocol required.