Item_Description_Redacted.pdf

61 KB Posted

Attached to
Remanufacture of the B-1 Landing Gear Up-lock Assembly
Solicitation number
FA811825R0048
Issued by

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This document is an Item Description form for a landing gear uplock assembly for the B-1B aircraft. The specific item details include a National Stock Number (NSN) 1620011791649EK, CAGE code 43999, and reference number L3300033-021. The uplock assembly is a hydraulically powered double overcenter toggle type lock consisting of a hook assembly, bellcrank, arm assembly, link assembly, cylinders, and two upstops. Physical specifications include dimensions of 28.0" length, 8.0" width, 11.0" height, and a weight of 32.8 pounds, constructed from aluminum alloy and steel. The item's primary function is to hydraulically move a hook between locked and unlocked positions, with the end item specifically identified for the B-1B aircraft model. The document was generated on 07 Mar 2025 and contains a timestamp of 07 Dec 2015 for the original description.

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ITEM DESCRIPTION

NSN

1620011791649EK

CAGE

43999

REFERENCE NUMBER

L3300033-021

NOUN

UPLOCK ASSEMBLY,LAN

END ITEM

B1

TCTO NUMBER TO NUMBER

4A4-36-2

CRITICALITY CODE

X

DEMILITARIZATION CODE

B

SECURITY CODE

U

MDC

EMF

ES CODE

CF

REMARKS

NAME: 07 DEC 2015DATE:

The landing gear uplock assembly, is a hydraulically powered double overcenter toggle type lock. The uplock assembly consists of a hook assembly, a bellcrank, an arm assembly, link assembly, cylinders, and two upstops.

INITIATOR

NAME ORGANIZATION / OFFICE SYMBOL

423 SCMS / GUMD

DSN PHONE COMMERCIAL PHONE

ITEM DESCRIPTION DATA

LENGTH ( IN )

28.0000

WIDTH ( IN )

8.0000

HEIGHT ( IN )

11.0000

WEIGHT ( LB )

32.8000

OTHER DIMENSIONS

ITEM MATERIAL

Aluminum Alloy, Steel

ITEM FUNCTION

The uplock assembly is a hydraulically operated assembly that includes a hook that moves from the locked to unlocked position.

SAFETY CRITICAL SCREW

THREADED COMPONENT

ESD CEMS SENSITIVE DATA

STATEMENT OF HELIUM CONTENT (%) 0 PRECIOUS METAL INDICATOR CODE

GFM REQUIRED GFE REQUIRED GFP REQUIRED

JEWEL BEARING JEWEL BEARING RELATED

LEGACY ITEM DESCRIPTION

END ITEM IDENTIFICATION:ACFT MODEL B-1B

Page 1 of 1ITEM DESCRIPTION Version 1Generated by PRPS using Jasper Reports on 07 Mar 2025

File details come from the government source that posted it. Updated .