HEADQUARTERS OH-58C - Page 191

TM 55-1520-228-10
Change 11 7-1
CHAPTER 7
PERFORMANCE DATA
SECTION I. INTRODUCTION
NOTE
All OH-58A and OH-58C model
aircraft are now equipped with the
T63-A-720 Engine. For performance
planning purposes, all OH-58A
model aircraft will use the OH-58C
model aircraft C performance
charts.
7-1. PURPOSE.
The purpose of this chapter is to provide the best avail-
able performance data for the OH-58A/C helicopter.
Regular use of this information will enable you to receive
maximum safe utilization from the aircraft. Although
maximum performance is not always required, regular
use of this chapter is recommended for the following
reasons.
a. Knowledge of your performance margin will al-
low you to make better decisions when unexpected con-
ditions or alternate missions are encountered.
b. Situations requiring maximum performance will
be readily recognized.
c. Familiarity with the data will allow performance
to be computed more easily and quickly.
d. Experience will be gained in accurately estimat-
ing the effects of variables for which data are not pre-
sented.
NOTE
The information provided in this chapter
is primarily intended for mission plan-
ning and is most useful when planning
operations in unfamiliar areas or at ex-
treme conditions. The data may also be
used in flight, to establish unit or areas
standing operating procedures, and to
inform ground commanders of perfor-
mance/risk tradeoffs.
7-2. CHAPTER 7 INDEX.
The following index contains a list of the sections and
their respective titles, along with figure numbers, sub-
jects and page numbers for each performance data
chart contained in this chapter.
INDEX
Section Subject Page
I Introduction 7-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
II Temperature Conversion 7-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 7-1. Temperature Conversion Chart 7-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
III-IX T63-A-700 Engine
A Performance Charts DELETED. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .