TB 43-0123
U21A-UTE
FUNCTION
U-21A/
TYPE NUMBER
NOMENCLATURE
DIGIH
RU-21A
RU-21B
RU-21C
RU-
21H
C-9325/APR-39)
Control
1
1
1
1
CM-440/APR-39(
1
1
1
1
IP-1150/APR-39(V)
Indicator
1
1
1
1
R-1838/APR-39(V)
Receiver
1
1
1
1
AN/APR-4(V)3 consisting of
Radar Signal Detecting Set
AS-3266/APR-44(
1
1
1
1
C-10387/APR-44(V)
Control
1
1
1
1
F-1503/APR44(V)
Low Pass Filter
1
1
1
1
R-2097/APR-44(V)
Receiver
1
1
1
1
R-2098/APR-44(
Receiver
1
1
1
1
POWER SOURCES
BB-433( )/A
Bate,
1
1
1
E551-11220-6
Batter
1
1
50-34576-1
Main Inverter
1
1
1
50-345764-2
Standby Inverter
1
1
1
50-345764-5
Main Inverter
1
50-345764-6
Standby Inverter
1
PU-544( )/A
INS
MGH 229-100
INS Inverter
1
1
1
PC-17A
Stic Inverter
2
MISCELLANEOUS
AM-3209/ASN
Sewoamplier
1
1
1
1
ID-250( )/ARN
Radio Magnetic Indicator
2
ID-351 BARN
Course Indicator
1
1
1
ID-387IARN
Course Indicator
1
1
1
ID-998/ASN
Radio Magnet Indicator
1
1
50345974
Radio Magnetic Indicator '
1
AN/ARA-50 consisting of
UHF Direction Finder Set
AM-3624/ARA-50
Amplifier
1
1
1
AS-909/ARA-48
Loop Antenna
1
1
1
MT-1955IARA-50
Mount (AM-3624)
1
1
1
KI-525A (KING)
Horiz. Situation Ind.
1
KG-102A (KING)
Gym
1
KMT-112 (KING)
FluxValve
1
KDI-573 (KING)
Slave DME Ind.
1
KNI-582 (KING)
RMI
2
KN-72 (KING)
VOR/LOC Converter
1
GENERAL NOTE:
Since FY 87 the U-21( ) aircraft, including the avionics systems, are supported under an
ATCOM/contractor logistics support program.
APPPLICABLE AIRCRAFT AVIONICS MANUALS:
TM 11-1510-20920
TM 11-1510-209-20P
TM 11-1510-209-34P
TM 11-1510-209-35
III-67
