TM 1-1520-240-MTF
4-30
Following the Maximum Continuous Power Check/Maxi-
mum Power Check, a Baseline Power Assurance Test
was performed at a FAT of +14_C. The PATN values
were;
ENG #1, 26
ENG #2, 28
The PATN adjustment for a FAT of +14_ is -1 (minus 1).
The ADJUSTED PATN is
ENG #1, 25
ENG #2, 27
The TEMP MARGIN VALUE determined during PAC is:
Engine #1
Engine #2
806
899
-775
-872
31
27
Dividing the TEMP MARGIN VALUE by 5 and rounding
the results off to the nearest whole number determine
PACN Margins for Engine #1 and #2 as 6.2 and 5.4
rounded is 6 and 5.
NOTE
If the value if the PACN is not a whole number,
round the number right of the decimal point to the
nearest whole number. If .4 or less round DOWN,
if .5 or greater, round UP.
Subtracting PACN Margins from the Adjusted
PATN obtains each engine’s PAT Trigger Values
as #1 engine 19 and #2 engine 22. Enter these val-
ues as the PAT Trigger Value on the PAT LOG.
Also enter all pertinent data in the aircraft historical
DA Forms 2408-19-1 I/A/W DA PAM 738-751
