B4-34 
RELEASE AND RECORDER RECORD 
i rit am T TT H 1 | f | 
oh i \ | il | 
< i 
STEM ME UH 
g | 
3 | | = 
z eee 
rts t+-4-] + — iP ialaaiNlalal iam +4 +~ L) 
~ We) 0. . rH - 
6 a 4 i 
—_ i Hl 
oF Le tt | ; | +++ tt | tt 4 ae 
THAN 3 
Na S¥. 
“6 / [- 
¢ vl Witte | | 
ay 44 4b 1 Bee al | +f | | | 
~~ \ ; } — 
WOU {I} SE Boge a malt | {|| a a ttt 
&» Tt i an rim} Wy = cz | ih LH 
4 Wa | iii tl {| | ity ty Ht 
rtp amor ty | LP 0 PCO lo) | | 0; L 
Figure B4 - 13. Discrepant Contact at Release 
If the contact value at release is 3.0 or more contacts different 
from the release contact value taken from the calibration 
chart, all data aloft will be regarded as missing and a new re- 
lease made. 
The portion of the flight where the pressure is computed by 
use of the hypsometer trace will not be affected by a discrepant 
contact at release; however, when switching from baroswitch 
to hypsometer evaluation, the corrected baroswitch pressure 
in (b) above, must be used to compare pressure values. 
13. Hypsometer Curve. Construct the hypsometer curve using the 
following procedures: 
a. 
1-1-69 
At the base and top ofeach hypsometer contact, read and enter 
the hypsometer ordinate value to the right ofthe trace. Apply 
recorder, drift and paper-drift corrections (zero corrections 
will not be entered). Example: 20.5 - 0.1 + 0.2 = 20.6; where 
20.5 is the hypsometer ordinate, -0.1 is the recorder correc- 
tion, +0.2 is the drift correction. 
If a correction is needed, place a dot at the correct ordinate 
value. 
FMH#3 
