Model: 1521

Landing Gear Audible Alarm

Properties:

End Application
Headset, type ma-1
General Description
Y3.800 in.Max lg x 2.500 in.Max h x 1.400 in.D; 4 0.173 in. Diameter mtg holes; freq range 1300 porm 260 to 1500 porm 300 hz; sweep range 3 porm 0.6 hz; sweep tone 1300-1600 hz; 0/p balanced sq wave into 150 ohm res load; 5.0 oz max weight
Fsc Application Data
F/fb-111
NSN
6340-01-094-0999
Part Number
1521
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 1521 NSN 6340-01-094-0999

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:
A
ESD:
ESD:
MMAC:
BJ
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
0.7000lbs
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
O
SPI No.:
SPI Rev.:
SPC Mkg:
00
LVL_A:
E
LVL_B:
Q

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
061700
UFC:
34580
LTL:
RATING VARIABLE
LCL:
77.5
WCC:
72D
TCC:
Z
SHC:
Z
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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