ONFP-03
Review of the ONav FTI
III. Time corrections 4.7.2.3.2.1
Sg 3, fr 2
Lesson Organization
A.
Check continuously
Sg 3, fr 4
Fig 3: Time
B.
Add or subtract one knot airspeed for each second slow
Correction Formula
or fast for six minutes (360 knots)
C.
Make no correction for less than five seconds of error
D.
When back on time, return to planned speed with
adjustments to power to maintain proper speed and time
PROGRESS CHECK
Sg 13, fr 1
Low-Level Route
Use the following scenario and (Fig 4) to answer questions
Sg 13, fr 3 Close-up
of C to D Leg
4 through 6.
Fig 4: Off-Time
You pass point D at the planned airspeed of 300 knots; at
Correction
the fix over Rachal, your elapsed timeclock shows 9 + 40.
Question 4 -- 4.7.2.3.2.1
Are you fast or slow?
ANSWER: Slow
Question 5 -- 4.7.2.3.2.1
By how much?
ANSWER: 10 seconds
Question 6 -- 4.7.2.3.2.1
How do you correct to get back to predicted time?
ANSWER: Increase airspeed to 310 kt for 5 minutes or to
360 kt for 1 minute.
(11-95) Change 1
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