Model: 1520-2

Landing Gear Audible Alarm

Properties:

General Description
Operating power requirements, not ac, dc, 28 v; m54 degrees c to p125 degrees c operating temp range; 250 cps porm 50 cps audio range; /on/ and /off/ 50 porm 10 pct interruption rate; hermetically sealed; 5 in. Max over-all lg; terminal data, 1, connector receptacle type; a/a a/a; mounting data, hole mounted bype, six 0.173 in. Diameter mtg holes irregularly spaced
Nondefinitive Specification/std Data
Ma-1 type
NSN
6340-00-179-5077
Part Number
1520-2
Description
Alarm,audible,landing Gear
CAGE

An electronic signal used on aircraft to warn the pilot of an unsafe landing gear condition. It is furnished by the injection of interrupted tones in the pilot's headset when the throttle is retarded with gear not down and locked.

Part 1520-2 NSN 6340-00-179-5077

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
21023
FIIG:
A23900
Concept No.:
App. Key:
A
Cond. Code:
1
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
N
PMIC:
U
ESD:
ESD:
MMAC:
CRITL:
X

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
061700
UFC:
34580
LTL:
RATING VARIABLE
LCL:
RATING VARIABLE
WCC:
658
TCC:
Z
SHC:
9
ACC:
Instruments/Radio

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Schedule B and Export
  • Schedule B: 8531900002
  • SITC: 77885
  • End Use: Electric apparatus
  • NAICS: 335999
  • USDA: 1

Freight Class: Parts of electric sound or visual signaling apparatus other than printed circuit assemblies, nesoi

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