NSN 1377-01-530-2921 NIIN 015302921 — Ejection Seat Aircraft Sequencer

1377-01-530-2921 Specification Set by the OEM (see RNCC code 3)

Cross Reference Parts Part numbers that meet the specification outlined on this page and set by the OEM

Identification Item Identification Guide (IIG) and Item Name Code (INC)

Definition Definition of approved item name (AIN): "SEQUENCER,EJECTION SEAT,AIRCRAFT"

A device containing explosives and or pyrotechnics which provides automatic activation, at preset intervals, for aircraft crew member ejection seat escape systems and its subsystems. it may contain logic circuitry to select the best mode of operation based upon speed and altitude at the time of ejection. it also may contain thermal batteries, when activated, provides power to operate timing circuits and initiated electrical impulses that actuate subsystem ballistic devices.

Packaging & Dimensions Packaging instructions, special markings, and approx. weight/dims

  Packaging Codes

OPI: Optional Procedure Indicator Code. A one position alpha code that indicates the allowable deviations from the prescribed requirements.

SPI No.: Special packaging instructions number.

LVL A/B/C: Indicates the type of shipping container required for level A, B, or C maximum packing protection.

SPC Mkg: A two position code that identifies the special markings applied to the container, which is part of the total pack to protect the contained item during preservation, packing, storage, transit and removal from the pack.

1377-01-530-2921 Material Hazmat, Precious Metals, Criticality, Enviroment, and ESD

  Identification Codes

HMIC: Hazardous Material Indicator Code. A one position code that identifies a hazardous item.

PMIC: Precious Metal Indicator Code. A one position code which identifies items that have precious metals as part of their content. precious metals are those metals generally considered to be uncommon, highly valuable, and relatively superior in certain properties such as resistance to corrosion and electrical conductivity.

ESD: Electrostatic Discharge. Indicates if an item is susceptible to electrostatic discharge or electromagnetic interference damage. electrostatic discharge damage occurs when an accumulation of static electricity generated by the relative motion or separation of materials is released to another item by direct contact. electromagnetic interference damage occurs when an item comes into proximity with an electrostatic or magnetic field.

ENAC: Enviromental Attribute Code. Identifies items with environmentally preferred characteristics.

CRITL: Criticality Indicator Code. Indicates an item is technically critical by tolerance, fit, application, nuclear hardness properties, or other characteristics.

Material Management Material categorization and source of supply

  Material Codes

SOS: Source of Supply. A three position code or routing identifier code (ric), which identifies the source of supply activity.

SMIC: Special Material Indicator Code. A two position code, which categorizes material on the basis of requirements for source or quality control, technical design or configuration control, procurement, stocking and issue control, special receipt, inspection, testing, storage, or handling.

MMAC: Material Management Aggregation Code. A two position code that identifies an item of supply to be managed by a specific activity manager.

MCC: Material Echelon Code. A two position code employed by the marine corps in classifying items into categories by materiel category and procurement echelon. the alphanumeric management code is in the first position and identifies the materiel category

IMC: Denotes wether items shall be subjected to integrated management under the defense supply agency or retained by the individual military service or other department of defense components for their management. Assigned by th activity responsible for item management coding.