Figure 2-26.—RD-108/UMQ-5 recorder chart
Near the time of each synoptic hour (0000Z,
06002, 12002, and 1800Z)
When notified of an aircraft mishap
For each disruption or discontinuity in the trace;
for instance, when returning the equipment to service
after a power outage or maintenance downtime
At the time of the first observation of the day
when the station does not operate for 24 hours a day
TIME ADJUSTMENTS.—Time adjustments
must be made whenever the time error is more than 5
minutes. Draw an arrow to the adjusted time, and then
enter “Time Corrected,” followed by the date and UTC
time to the nearest minute. If an adjustment is necessary
because of a power outage or maintenance, enter the
appropriate reason for the gap in the record.
CHART FEED-RATE ADJUSTMENTS.—
Whenever the chart feed-rate is changed, enter a time
check and an appropriate note, such as "Begin 6 inches
per hour" or "Begin 3 inches per hour." Chart speed
rates of 1 1/2 inches per hour, 3 inches per hour, and 6
inches per hour are available by manually changing the
drive gears. At the standard 3-inch-per-hour rate, a
chart will last 15 days in continuous operation.
TYPE B-3 SHIPBOARD ANEMOMETER
The Type B-3 wind-measuring set falls under the
cognizance of NAVSEA. It is serviced by the shipboard
IC electricians, who maintain the technical manuals on
the system. The only responsibility the Aerographer’s
Mate has in connection with this equipment is to read
the indicators and to verify that the indicator is
operating properly. If the indicated relative speed or
direction appears to be in error, the problem is reported
to the IC shop.
2-20
