MIL-HDBK-162A
Volume 1
15 December 1965
Section 2
ITEM NAME: GROUND POSITION INDICATOR
TYPE: AN/APA-44A
plus 30 deg C (plus 86 deg)
RELATION TO SIMILAR EQUIPMENT
Relative Humidity: Continous or inter-
mittent operation 100% at temp up to
The major differences between Ground Position
plus 55 C
Indicators AN/APA-44A and AN/ APA-44B consists of
Weight: Approx 300 lbs
changes in three components as indicated in the
Accuracy
component listing.
High Altitude Bombing : 20 mils
Navigation Error: Less than 3% of
distance traveled.
Max Airspeed: 434 knots air speed Ind.
TECHNICAL DESCRIPTION
ID-168/APA-44A-44B.
Power Requirements
Ind. ID-332?APA-44B.
dc: 26.5v, 10 amps
Wind Accuracy: 3 to 5 knots
ac, Regulated: 115v, 380-420-cps,26 va
Time of Fall: 0 - 105 sec
ac, Unregulated: 115v, 380-1000 cps, 750
Max Trail: 36,000 ft
va
Max Range "Fix": 20 mi east, 20 mi
west, 20 mi north, 20 mi south.
Operating Limits
Max Altitude: 50,000 ft above terrain
INSTALLATION CONSIDERATIONS
Ambient Temp
Min below 15,000 ft above sea level
Detailed installation instructions are contained in each
-55 deg C (-67 deg F)
applicable aircraft handbook.
Max below 15,000 ft above sea level
plus 55 deg C (plus 131 deg F)
Max above 15,000 ft above sea level
PRINCIPAL COMPONENTS AND PHYSICAL DATA
COMPONENT
QTY
HEIGHT
WIDTH
DEPTH
UNIT WT.
(Inches)
(Inches)
(Inches)
(Pounds)
Airspeed Indicator
ID-168B/APA-44
1*
7-5/32
5-1/4
16-1/2
13
ID-332/APA-44B
1**
7-5/32
5-1/4
16-1/2
13
Interconnecting Box
1
5-7/8
18
22-1/4
37
J-434/APA-44A
Power Supply PP-185B/APA-44
1
10-41/64
10-13/32
22-9/16
49
Electronic Control Amplifier
AM-559A/APA-44A
1*
11-1/16
16-3/16
23-11/16
86
AM-677/APA-44B
1**
11-1/16
16-3/16
23-11/16
86
Computer Control
C-949/APA-44A
1
7-1/8
6
7-5/16
6
Range Computer CP-103/APA-44A
1
7-9/16
9-3/8
12-9/16
21
Ballistic Computer
1
8-1/32
6-5/16
16-1/32
18
Monitor Voltmeter
1
2-9/16
3-1/4
3-1/4
1
Steering Meter
2
2-3/4
3-1/4
3-1/4
1
Mtg Airspeed Indicator
1
9-1/4
4-1/4
11-3/4
1-1/2
Mtg Power Supply MT-1103/U
1
2-5/8
11-1/8
22-13/16
2-3/4
AN/APA-44A: 2
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