TEST

OPERATIONAL CHECKOUT PROCEDURES

OCP's

OCP First Page

Here is the Cover page for an OCP (Operational Checkout Procedure) written for LM3 FEAT (Formal Engineering Acceptance Test) Number 61015, Dated March 30, 1968. The OCP was signed by Howard Wright (S/CAT Deputy) and Red Hafter ( LM 3 Test Team Manager). It was written by me (using the full resourses of LM3 Test Team). The OCP was broken up into four volumes and was more than one foot high in size. This was the first time the OCP was run, and took more than 10 days to complete. When testing was completed, there were over one hundred TDR's (Test Discrepancy Reports) written - most of which were procedural errors.

What is an OCP?

The LM Subsystems and Integrated systems were tested as the vehicle was being assembled in work stands in plant 5. The LM sampled measurements, (ie, 5x per sec., 100x per sec. . . . etc.) were transmitted in a Pulse Coded Modulation (PCM) mode, were down linked , were coupled with plugs in "carry on" measurements, were signal conditioned and then sent to the ACE (Acceptance Checkout Equipment) station. The ACE station displayed hundreds of measurements per second to test engineers manning positions in the ACE room. These measurements were "real time" displayed on "paged" CRT's, bush recorders, and event lights.

The LM was basically tested in a pseudo flight configuration mode. The persons in the LM cabin (LMP and CDR) performed actions under the direction of the "Test Conductor". Personnel in the ACE room then verified the correctness of the resulting measurements coming down from the LM. Each second, hundreds of measurements would be sampled from the LM subsystems.

OCP's were written in a script like manner, with the Test Conductor (TC) reading to the appropriate support personnel.

. Here is a typical page from an OCP:

Some of the Test Badges that I found in my "sock drawer".

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